./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix034_power.oepc_power.opt_pso.oepc_rmo.oepc_rmo.opt_tso.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix034_power.oepc_power.opt_pso.oepc_rmo.oepc_rmo.opt_tso.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix034_power.oepc_power.opt_pso.oepc_rmo.oepc_rmo.opt_tso.oepc.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix034_power.oepc_power.opt_pso.oepc_rmo.oepc_rmo.opt_tso.oepc.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 23:38:16,940 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 23:38:17,015 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 23:38:17,021 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 23:38:17,022 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 23:38:17,056 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 23:38:17,056 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 23:38:17,056 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 23:38:17,057 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 23:38:17,061 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 23:38:17,062 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 23:38:17,062 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 23:38:17,063 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 23:38:17,064 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 23:38:17,064 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 23:38:17,064 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 23:38:17,065 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 23:38:17,065 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 23:38:17,065 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 23:38:17,065 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 23:38:17,066 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 23:38:17,066 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 23:38:17,066 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 23:38:17,066 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 23:38:17,067 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 23:38:17,067 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 23:38:17,067 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 23:38:17,067 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 23:38:17,068 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 23:38:17,068 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 23:38:17,069 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 23:38:17,069 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 23:38:17,069 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 23:38:17,069 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 23:38:17,070 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 23:38:17,070 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 23:38:17,070 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 23:38:17,070 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 23:38:17,070 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 23:38:17,071 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 23:38:17,071 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 23:38:17,071 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 23:38:17,071 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 23:38:17,071 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-27 23:38:17,247 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 23:38:17,269 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 23:38:17,271 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 23:38:17,272 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 23:38:17,272 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 23:38:17,273 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix034_power.oepc_power.opt_pso.oepc_rmo.oepc_rmo.opt_tso.oepc.yml/witness.yml [2024-06-27 23:38:17,361 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 23:38:17,361 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 23:38:17,363 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix034_power.oepc_power.opt_pso.oepc_rmo.oepc_rmo.opt_tso.oepc.i [2024-06-27 23:38:18,390 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 23:38:18,629 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 23:38:18,629 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix034_power.oepc_power.opt_pso.oepc_rmo.oepc_rmo.opt_tso.oepc.i [2024-06-27 23:38:18,643 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/604c55417/64306689765949508ec5a39587848c6f/FLAG8dd55dcdd [2024-06-27 23:38:18,667 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/604c55417/64306689765949508ec5a39587848c6f [2024-06-27 23:38:18,667 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 23:38:18,670 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 23:38:18,671 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 23:38:18,671 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 23:38:18,676 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 23:38:18,677 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 11:38:17" (1/2) ... [2024-06-27 23:38:18,678 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50e69796 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:38:18, skipping insertion in model container [2024-06-27 23:38:18,678 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 11:38:17" (1/2) ... [2024-06-27 23:38:18,680 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@34e02946 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:38:18, skipping insertion in model container [2024-06-27 23:38:18,680 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 11:38:18" (2/2) ... [2024-06-27 23:38:18,681 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50e69796 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:38:18, skipping insertion in model container [2024-06-27 23:38:18,682 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 11:38:18" (2/2) ... [2024-06-27 23:38:18,682 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 23:38:18,706 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 23:38:18,707 INFO L97 edCorrectnessWitness]: Location invariant before [L821-L821] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL) && (0LL - (long long )__unbuffered_p1_EBX) + (long long )z >= 0LL) && (0LL - (long long )__unbuffered_p1_EBX) + (long long )z$mem_tmp >= 0LL) && (0LL - (long long )z$flush_delayed) + (long long )z$r_buff0_thd1 >= 0LL) && (0LL - (long long )z$flush_delayed) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$flush_delayed) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff0_thd0) + (long long )z$r_buff0_thd1 >= 0LL) && (0LL - (long long )z$r_buff0_thd0) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff0_thd0) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff0_thd1) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff0_thd2) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff0_thd2) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff1_thd0) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd0) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff1_thd1) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd1) + (long long )z$w_buff1 >= 0LL) && (0LL - (long long )z$r_buff1_thd2) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd2) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$read_delayed) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$read_delayed) + (long long )z$w_buff0_used >= 0LL) && (1LL - (long long )z$r_buff0_thd1) + (long long )z$w_buff0_used >= 0LL) && (1LL - (long long )z$r_buff1_thd1) + (long long )z$w_buff0_used >= 0LL) && (1LL - (long long )z$w_buff0) + (long long )z$w_buff0_used >= 0LL) && (long long )__unbuffered_cnt + (long long )z$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_cnt + (long long )z$w_buff0 >= 0LL) && (long long )__unbuffered_cnt + (long long )z$w_buff0_used >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )z$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )z$w_buff0 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )z$w_buff0_used >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )z$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )z$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )z$w_buff0_used >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )z$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )z$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )z$w_buff0_used >= 0LL) && (long long )main$tmp_guard1 + (long long )z$r_buff0_thd1 >= 0LL) && (long long )main$tmp_guard1 + (long long )z$w_buff0 >= 0LL) && (long long )main$tmp_guard1 + (long long )z$w_buff0_used >= 0LL) && (long long )x + (long long )z$r_buff0_thd1 >= 0LL) && (long long )x + (long long )z$w_buff0 >= 0LL) && (long long )x + (long long )z$w_buff0_used >= 0LL) && (long long )y + (long long )z$r_buff0_thd1 >= 0LL) && (long long )y + (long long )z$w_buff0 >= 0LL) && (long long )y + (long long )z$w_buff0_used >= 0LL) && (long long )z + (long long )z$r_buff0_thd1 >= 0LL) && (long long )z + (long long )z$w_buff0 >= 0LL) && (long long )z + (long long )z$w_buff0_used >= 0LL) && (long long )z$flush_delayed + (long long )z$r_buff0_thd1 >= 0LL) && (long long )z$flush_delayed + (long long )z$w_buff0 >= 0LL) && (long long )z$flush_delayed + (long long )z$w_buff0_used >= 0LL) && (long long )z$mem_tmp + (long long )z$r_buff0_thd1 >= 0LL) && (long long )z$mem_tmp + (long long )z$w_buff0 >= 0LL) && (long long )z$mem_tmp + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd0 + (long long )z$r_buff0_thd1 >= 0LL) && (long long )z$r_buff0_thd0 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff0_thd0 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff0_thd2 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff1_thd0 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff1_thd1 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff1_thd2 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$read_delayed >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$w_buff1 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$w_buff1_used >= 0LL) && (long long )z$r_buff0_thd2 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff0_thd2 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff1_thd0 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff1_thd0 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff1_thd1 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff1_thd1 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff1_thd2 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff1_thd2 + (long long )z$w_buff0_used >= 0LL) && (long long )z$read_delayed + (long long )z$w_buff0 >= 0LL) && (long long )z$read_delayed + (long long )z$w_buff0_used >= 0LL) && (long long )z$w_buff0 + (long long )z$w_buff0_used >= 0LL) && (long long )z$w_buff0 + (long long )z$w_buff1 >= 0LL) && (long long )z$w_buff0 + (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff0_used + (long long )z$w_buff1 >= 0LL) && (long long )z$w_buff0_used + (long long )z$w_buff1_used >= 0LL) && (long long )weak$$choice0 + (long long )z$r_buff0_thd1 >= 0LL) && (long long )weak$$choice0 + (long long )z$w_buff0 >= 0LL) && (long long )weak$$choice0 + (long long )z$w_buff0_used >= 0LL) && (long long )weak$$choice2 + (long long )z$r_buff0_thd1 >= 0LL) && (long long )weak$$choice2 + (long long )z$w_buff0 >= 0LL) && (long long )weak$$choice2 + (long long )z$w_buff0_used >= 0LL) && (1LL + (long long )z$w_buff0_used) - (long long )z$w_buff1 >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )z$mem_tmp >= 0LL) && (long long )z - (long long )z$mem_tmp >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff0_thd2 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff1_thd0 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff1_thd1 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff1_thd2 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$read_delayed >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$w_buff1 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$w_buff1_used >= 0LL) && (long long )z$r_buff1_thd1 - (long long )z$w_buff1 >= 0LL) && (long long )z$r_buff1_thd1 - (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff0_used >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff1 >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff0_used - (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff1 - (long long )z$w_buff1_used >= 0LL) [2024-06-27 23:38:18,708 INFO L97 edCorrectnessWitness]: Location invariant before [L820-L820] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL) && (0LL - (long long )__unbuffered_p1_EBX) + (long long )z >= 0LL) && (0LL - (long long )__unbuffered_p1_EBX) + (long long )z$mem_tmp >= 0LL) && (0LL - (long long )z$flush_delayed) + (long long )z$r_buff0_thd1 >= 0LL) && (0LL - (long long )z$flush_delayed) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$flush_delayed) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff0_thd0) + (long long )z$r_buff0_thd1 >= 0LL) && (0LL - (long long )z$r_buff0_thd0) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff0_thd0) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff0_thd1) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff0_thd2) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff0_thd2) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff1_thd0) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd0) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff1_thd1) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd1) + (long long )z$w_buff1 >= 0LL) && (0LL - (long long )z$r_buff1_thd2) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd2) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$read_delayed) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$read_delayed) + (long long )z$w_buff0_used >= 0LL) && (1LL - (long long )z$r_buff0_thd1) + (long long )z$w_buff0_used >= 0LL) && (1LL - (long long )z$r_buff1_thd1) + (long long )z$w_buff0_used >= 0LL) && (1LL - (long long )z$w_buff0) + (long long )z$w_buff0_used >= 0LL) && (long long )__unbuffered_cnt + (long long )z$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_cnt + (long long )z$w_buff0 >= 0LL) && (long long )__unbuffered_cnt + (long long )z$w_buff0_used >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )z$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )z$w_buff0 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )z$w_buff0_used >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )z$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )z$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )z$w_buff0_used >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )z$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )z$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )z$w_buff0_used >= 0LL) && (long long )main$tmp_guard1 + (long long )z$r_buff0_thd1 >= 0LL) && (long long )main$tmp_guard1 + (long long )z$w_buff0 >= 0LL) && (long long )main$tmp_guard1 + (long long )z$w_buff0_used >= 0LL) && (long long )x + (long long )z$r_buff0_thd1 >= 0LL) && (long long )x + (long long )z$w_buff0 >= 0LL) && (long long )x + (long long )z$w_buff0_used >= 0LL) && (long long )y + (long long )z$r_buff0_thd1 >= 0LL) && (long long )y + (long long )z$w_buff0 >= 0LL) && (long long )y + (long long )z$w_buff0_used >= 0LL) && (long long )z + (long long )z$r_buff0_thd1 >= 0LL) && (long long )z + (long long )z$w_buff0 >= 0LL) && (long long )z + (long long )z$w_buff0_used >= 0LL) && (long long )z$flush_delayed + (long long )z$r_buff0_thd1 >= 0LL) && (long long )z$flush_delayed + (long long )z$w_buff0 >= 0LL) && (long long )z$flush_delayed + (long long )z$w_buff0_used >= 0LL) && (long long )z$mem_tmp + (long long )z$r_buff0_thd1 >= 0LL) && (long long )z$mem_tmp + (long long )z$w_buff0 >= 0LL) && (long long )z$mem_tmp + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd0 + (long long )z$r_buff0_thd1 >= 0LL) && (long long )z$r_buff0_thd0 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff0_thd0 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff0_thd2 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff1_thd0 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff1_thd1 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff1_thd2 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$read_delayed >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$w_buff1 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$w_buff1_used >= 0LL) && (long long )z$r_buff0_thd2 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff0_thd2 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff1_thd0 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff1_thd0 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff1_thd1 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff1_thd1 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff1_thd2 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff1_thd2 + (long long )z$w_buff0_used >= 0LL) && (long long )z$read_delayed + (long long )z$w_buff0 >= 0LL) && (long long )z$read_delayed + (long long )z$w_buff0_used >= 0LL) && (long long )z$w_buff0 + (long long )z$w_buff0_used >= 0LL) && (long long )z$w_buff0 + (long long )z$w_buff1 >= 0LL) && (long long )z$w_buff0 + (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff0_used + (long long )z$w_buff1 >= 0LL) && (long long )z$w_buff0_used + (long long )z$w_buff1_used >= 0LL) && (long long )weak$$choice0 + (long long )z$r_buff0_thd1 >= 0LL) && (long long )weak$$choice0 + (long long )z$w_buff0 >= 0LL) && (long long )weak$$choice0 + (long long )z$w_buff0_used >= 0LL) && (long long )weak$$choice2 + (long long )z$r_buff0_thd1 >= 0LL) && (long long )weak$$choice2 + (long long )z$w_buff0 >= 0LL) && (long long )weak$$choice2 + (long long )z$w_buff0_used >= 0LL) && (1LL + (long long )z$w_buff0_used) - (long long )z$w_buff1 >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )z$mem_tmp >= 0LL) && (long long )z - (long long )z$mem_tmp >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff0_thd2 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff1_thd0 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff1_thd1 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff1_thd2 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$read_delayed >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$w_buff1 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$w_buff1_used >= 0LL) && (long long )z$r_buff1_thd1 - (long long )z$w_buff1 >= 0LL) && (long long )z$r_buff1_thd1 - (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff0_used >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff1 >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff0_used - (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff1 - (long long )z$w_buff1_used >= 0LL) [2024-06-27 23:38:18,708 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 23:38:18,708 INFO L106 edCorrectnessWitness]: ghost_update [L818-L818] multithreaded = 1; [2024-06-27 23:38:18,748 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 23:38:19,064 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 23:38:19,073 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 23:38:19,242 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 23:38:19,277 INFO L206 MainTranslator]: Completed translation [2024-06-27 23:38:19,277 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:38:19 WrapperNode [2024-06-27 23:38:19,278 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 23:38:19,278 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 23:38:19,278 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 23:38:19,279 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 23:38:19,284 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:38:19" (1/1) ... [2024-06-27 23:38:19,319 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:38:19" (1/1) ... [2024-06-27 23:38:19,358 INFO L138 Inliner]: procedures = 174, calls = 38, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 115 [2024-06-27 23:38:19,359 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 23:38:19,359 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 23:38:19,359 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 23:38:19,360 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 23:38:19,367 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:38:19" (1/1) ... [2024-06-27 23:38:19,368 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:38:19" (1/1) ... [2024-06-27 23:38:19,372 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:38:19" (1/1) ... [2024-06-27 23:38:19,401 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-27 23:38:19,401 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:38:19" (1/1) ... [2024-06-27 23:38:19,401 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:38:19" (1/1) ... [2024-06-27 23:38:19,410 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:38:19" (1/1) ... [2024-06-27 23:38:19,425 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:38:19" (1/1) ... [2024-06-27 23:38:19,428 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:38:19" (1/1) ... [2024-06-27 23:38:19,430 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:38:19" (1/1) ... [2024-06-27 23:38:19,434 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 23:38:19,434 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 23:38:19,435 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 23:38:19,435 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 23:38:19,449 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:38:19" (1/1) ... [2024-06-27 23:38:19,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 23:38:19,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 23:38:19,473 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-27 23:38:19,477 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-27 23:38:19,504 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 23:38:19,505 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 23:38:19,505 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 23:38:19,505 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 23:38:19,505 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 23:38:19,505 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 23:38:19,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 23:38:19,505 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 23:38:19,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 23:38:19,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 23:38:19,506 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 23:38:19,630 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 23:38:19,631 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 23:38:20,105 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 23:38:20,105 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 23:38:20,234 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 23:38:20,234 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 23:38:20,236 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 11:38:20 BoogieIcfgContainer [2024-06-27 23:38:20,236 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 23:38:20,265 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 23:38:20,265 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 23:38:20,268 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 23:38:20,268 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 11:38:17" (1/4) ... [2024-06-27 23:38:20,269 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63afeb97 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 11:38:20, skipping insertion in model container [2024-06-27 23:38:20,269 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 11:38:18" (2/4) ... [2024-06-27 23:38:20,269 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63afeb97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 11:38:20, skipping insertion in model container [2024-06-27 23:38:20,269 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:38:19" (3/4) ... [2024-06-27 23:38:20,271 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63afeb97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 11:38:20, skipping insertion in model container [2024-06-27 23:38:20,271 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 11:38:20" (4/4) ... [2024-06-27 23:38:20,272 INFO L112 eAbstractionObserver]: Analyzing ICFG mix034_power.oepc_power.opt_pso.oepc_rmo.oepc_rmo.opt_tso.oepc.i [2024-06-27 23:38:20,286 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 23:38:20,286 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-27 23:38:20,286 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 23:38:20,340 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 23:38:20,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 31 transitions, 70 flow [2024-06-27 23:38:20,395 INFO L124 PetriNetUnfolderBase]: 0/29 cut-off events. [2024-06-27 23:38:20,396 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 23:38:20,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 29 events. 0/29 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 40 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-27 23:38:20,397 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 31 transitions, 70 flow [2024-06-27 23:38:20,400 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 23 transitions, 52 flow [2024-06-27 23:38:20,408 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 23:38:20,413 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2ddaad63, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 23:38:20,413 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-27 23:38:20,416 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 23:38:20,416 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 23:38:20,417 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 23:38:20,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:38:20,417 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 23:38:20,418 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:38:20,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:38:20,422 INFO L85 PathProgramCache]: Analyzing trace with hash 332681745, now seen corresponding path program 1 times [2024-06-27 23:38:20,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:38:20,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926417382] [2024-06-27 23:38:20,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:38:20,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:38:20,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:38:21,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:38:21,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:38:21,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926417382] [2024-06-27 23:38:21,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926417382] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:38:21,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:38:21,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 23:38:21,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210406962] [2024-06-27 23:38:21,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:38:21,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 23:38:21,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:38:21,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 23:38:21,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 23:38:21,694 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 31 [2024-06-27 23:38:21,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 23 transitions, 52 flow. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:21,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:38:21,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 31 [2024-06-27 23:38:21,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:38:21,829 INFO L124 PetriNetUnfolderBase]: 153/293 cut-off events. [2024-06-27 23:38:21,829 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-06-27 23:38:21,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 586 conditions, 293 events. 153/293 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1091 event pairs, 89 based on Foata normal form. 1/282 useless extension candidates. Maximal degree in co-relation 575. Up to 272 conditions per place. [2024-06-27 23:38:21,835 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 21 selfloop transitions, 3 changer transitions 0/29 dead transitions. [2024-06-27 23:38:21,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 29 transitions, 115 flow [2024-06-27 23:38:21,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 23:38:21,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 23:38:21,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 56 transitions. [2024-06-27 23:38:21,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6021505376344086 [2024-06-27 23:38:21,846 INFO L175 Difference]: Start difference. First operand has 30 places, 23 transitions, 52 flow. Second operand 3 states and 56 transitions. [2024-06-27 23:38:21,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 29 transitions, 115 flow [2024-06-27 23:38:21,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 29 transitions, 112 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 23:38:21,850 INFO L231 Difference]: Finished difference. Result has 31 places, 25 transitions, 71 flow [2024-06-27 23:38:21,851 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=71, PETRI_PLACES=31, PETRI_TRANSITIONS=25} [2024-06-27 23:38:21,855 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 1 predicate places. [2024-06-27 23:38:21,855 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 25 transitions, 71 flow [2024-06-27 23:38:21,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:21,856 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:38:21,856 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:38:21,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 23:38:21,857 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:38:21,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:38:21,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1879593136, now seen corresponding path program 1 times [2024-06-27 23:38:21,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:38:21,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922463233] [2024-06-27 23:38:21,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:38:21,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:38:21,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:38:22,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:38:22,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:38:22,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922463233] [2024-06-27 23:38:22,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922463233] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:38:22,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:38:22,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 23:38:22,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073365703] [2024-06-27 23:38:22,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:38:22,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 23:38:22,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:38:22,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 23:38:22,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 23:38:22,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 31 [2024-06-27 23:38:22,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 25 transitions, 71 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:22,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:38:22,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 31 [2024-06-27 23:38:22,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:38:22,908 INFO L124 PetriNetUnfolderBase]: 150/293 cut-off events. [2024-06-27 23:38:22,908 INFO L125 PetriNetUnfolderBase]: For 57/57 co-relation queries the response was YES. [2024-06-27 23:38:22,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 661 conditions, 293 events. 150/293 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1077 event pairs, 68 based on Foata normal form. 2/291 useless extension candidates. Maximal degree in co-relation 649. Up to 258 conditions per place. [2024-06-27 23:38:22,911 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 25 selfloop transitions, 5 changer transitions 0/35 dead transitions. [2024-06-27 23:38:22,911 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 35 transitions, 157 flow [2024-06-27 23:38:22,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 23:38:22,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 23:38:22,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 72 transitions. [2024-06-27 23:38:22,912 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5806451612903226 [2024-06-27 23:38:22,912 INFO L175 Difference]: Start difference. First operand has 31 places, 25 transitions, 71 flow. Second operand 4 states and 72 transitions. [2024-06-27 23:38:22,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 35 transitions, 157 flow [2024-06-27 23:38:22,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 35 transitions, 154 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 23:38:22,915 INFO L231 Difference]: Finished difference. Result has 34 places, 27 transitions, 95 flow [2024-06-27 23:38:22,916 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=95, PETRI_PLACES=34, PETRI_TRANSITIONS=27} [2024-06-27 23:38:22,916 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 4 predicate places. [2024-06-27 23:38:22,916 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 27 transitions, 95 flow [2024-06-27 23:38:22,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:22,917 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:38:22,917 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:38:22,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 23:38:22,918 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:38:22,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:38:22,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1892209841, now seen corresponding path program 1 times [2024-06-27 23:38:22,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:38:22,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89421243] [2024-06-27 23:38:22,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:38:22,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:38:22,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:38:23,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:38:23,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:38:23,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89421243] [2024-06-27 23:38:23,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89421243] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:38:23,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:38:23,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:38:23,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556820806] [2024-06-27 23:38:23,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:38:23,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:38:23,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:38:23,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:38:23,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:38:23,972 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-27 23:38:23,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 27 transitions, 95 flow. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:23,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:38:23,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-27 23:38:23,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:38:24,137 INFO L124 PetriNetUnfolderBase]: 180/340 cut-off events. [2024-06-27 23:38:24,138 INFO L125 PetriNetUnfolderBase]: For 187/187 co-relation queries the response was YES. [2024-06-27 23:38:24,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 852 conditions, 340 events. 180/340 cut-off events. For 187/187 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1248 event pairs, 52 based on Foata normal form. 2/336 useless extension candidates. Maximal degree in co-relation 838. Up to 291 conditions per place. [2024-06-27 23:38:24,142 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 34 selfloop transitions, 9 changer transitions 0/47 dead transitions. [2024-06-27 23:38:24,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 47 transitions, 238 flow [2024-06-27 23:38:24,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:38:24,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:38:24,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 99 transitions. [2024-06-27 23:38:24,145 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.532258064516129 [2024-06-27 23:38:24,146 INFO L175 Difference]: Start difference. First operand has 34 places, 27 transitions, 95 flow. Second operand 6 states and 99 transitions. [2024-06-27 23:38:24,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 47 transitions, 238 flow [2024-06-27 23:38:24,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 47 transitions, 226 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-27 23:38:24,148 INFO L231 Difference]: Finished difference. Result has 39 places, 31 transitions, 134 flow [2024-06-27 23:38:24,148 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=134, PETRI_PLACES=39, PETRI_TRANSITIONS=31} [2024-06-27 23:38:24,148 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 9 predicate places. [2024-06-27 23:38:24,148 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 31 transitions, 134 flow [2024-06-27 23:38:24,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:24,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:38:24,149 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:38:24,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 23:38:24,149 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:38:24,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:38:24,150 INFO L85 PathProgramCache]: Analyzing trace with hash -1968028297, now seen corresponding path program 1 times [2024-06-27 23:38:24,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:38:24,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396262504] [2024-06-27 23:38:24,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:38:24,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:38:24,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:38:25,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:38:25,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:38:25,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396262504] [2024-06-27 23:38:25,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396262504] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:38:25,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:38:25,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:38:25,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087028831] [2024-06-27 23:38:25,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:38:25,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:38:25,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:38:25,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:38:25,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:38:25,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-27 23:38:25,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 31 transitions, 134 flow. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:25,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:38:25,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-27 23:38:25,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:38:25,421 INFO L124 PetriNetUnfolderBase]: 176/330 cut-off events. [2024-06-27 23:38:25,421 INFO L125 PetriNetUnfolderBase]: For 345/345 co-relation queries the response was YES. [2024-06-27 23:38:25,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 927 conditions, 330 events. 176/330 cut-off events. For 345/345 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1165 event pairs, 30 based on Foata normal form. 4/326 useless extension candidates. Maximal degree in co-relation 911. Up to 265 conditions per place. [2024-06-27 23:38:25,423 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 34 selfloop transitions, 10 changer transitions 0/48 dead transitions. [2024-06-27 23:38:25,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 48 transitions, 258 flow [2024-06-27 23:38:25,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:38:25,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:38:25,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 109 transitions. [2024-06-27 23:38:25,426 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5023041474654378 [2024-06-27 23:38:25,426 INFO L175 Difference]: Start difference. First operand has 39 places, 31 transitions, 134 flow. Second operand 7 states and 109 transitions. [2024-06-27 23:38:25,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 48 transitions, 258 flow [2024-06-27 23:38:25,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 48 transitions, 241 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-27 23:38:25,428 INFO L231 Difference]: Finished difference. Result has 42 places, 30 transitions, 133 flow [2024-06-27 23:38:25,428 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=133, PETRI_PLACES=42, PETRI_TRANSITIONS=30} [2024-06-27 23:38:25,429 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 12 predicate places. [2024-06-27 23:38:25,429 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 30 transitions, 133 flow [2024-06-27 23:38:25,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:25,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:38:25,429 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:38:25,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 23:38:25,430 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:38:25,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:38:25,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1341926479, now seen corresponding path program 1 times [2024-06-27 23:38:25,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:38:25,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685789351] [2024-06-27 23:38:25,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:38:25,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:38:25,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:38:26,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:38:26,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:38:26,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685789351] [2024-06-27 23:38:26,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685789351] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:38:26,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:38:26,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 23:38:26,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549289074] [2024-06-27 23:38:26,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:38:26,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 23:38:26,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:38:26,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 23:38:26,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 23:38:26,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:38:26,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 30 transitions, 133 flow. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:26,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:38:26,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:38:26,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:38:26,706 INFO L124 PetriNetUnfolderBase]: 174/327 cut-off events. [2024-06-27 23:38:26,706 INFO L125 PetriNetUnfolderBase]: For 461/461 co-relation queries the response was YES. [2024-06-27 23:38:26,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 968 conditions, 327 events. 174/327 cut-off events. For 461/461 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1153 event pairs, 47 based on Foata normal form. 1/326 useless extension candidates. Maximal degree in co-relation 950. Up to 304 conditions per place. [2024-06-27 23:38:26,708 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 27 selfloop transitions, 8 changer transitions 0/38 dead transitions. [2024-06-27 23:38:26,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 38 transitions, 230 flow [2024-06-27 23:38:26,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 23:38:26,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 23:38:26,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 65 transitions. [2024-06-27 23:38:26,711 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-27 23:38:26,711 INFO L175 Difference]: Start difference. First operand has 42 places, 30 transitions, 133 flow. Second operand 5 states and 65 transitions. [2024-06-27 23:38:26,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 38 transitions, 230 flow [2024-06-27 23:38:26,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 38 transitions, 204 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-27 23:38:26,715 INFO L231 Difference]: Finished difference. Result has 43 places, 34 transitions, 154 flow [2024-06-27 23:38:26,715 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=154, PETRI_PLACES=43, PETRI_TRANSITIONS=34} [2024-06-27 23:38:26,717 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 13 predicate places. [2024-06-27 23:38:26,719 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 34 transitions, 154 flow [2024-06-27 23:38:26,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:26,719 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:38:26,719 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:38:26,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 23:38:26,725 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:38:26,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:38:26,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1349951301, now seen corresponding path program 1 times [2024-06-27 23:38:26,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:38:26,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116957889] [2024-06-27 23:38:26,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:38:26,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:38:26,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:38:28,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:38:28,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:38:28,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116957889] [2024-06-27 23:38:28,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116957889] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:38:28,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:38:28,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:38:28,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523291693] [2024-06-27 23:38:28,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:38:28,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:38:28,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:38:28,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:38:28,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:38:28,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:38:28,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 34 transitions, 154 flow. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:28,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:38:28,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:38:28,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:38:28,461 INFO L124 PetriNetUnfolderBase]: 199/357 cut-off events. [2024-06-27 23:38:28,462 INFO L125 PetriNetUnfolderBase]: For 718/718 co-relation queries the response was YES. [2024-06-27 23:38:28,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1131 conditions, 357 events. 199/357 cut-off events. For 718/718 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1231 event pairs, 55 based on Foata normal form. 1/356 useless extension candidates. Maximal degree in co-relation 1110. Up to 343 conditions per place. [2024-06-27 23:38:28,464 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 29 selfloop transitions, 10 changer transitions 0/41 dead transitions. [2024-06-27 23:38:28,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 41 transitions, 252 flow [2024-06-27 23:38:28,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:38:28,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:38:28,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 70 transitions. [2024-06-27 23:38:28,466 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3763440860215054 [2024-06-27 23:38:28,466 INFO L175 Difference]: Start difference. First operand has 43 places, 34 transitions, 154 flow. Second operand 6 states and 70 transitions. [2024-06-27 23:38:28,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 41 transitions, 252 flow [2024-06-27 23:38:28,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 41 transitions, 241 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-27 23:38:28,469 INFO L231 Difference]: Finished difference. Result has 47 places, 36 transitions, 182 flow [2024-06-27 23:38:28,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=182, PETRI_PLACES=47, PETRI_TRANSITIONS=36} [2024-06-27 23:38:28,471 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 17 predicate places. [2024-06-27 23:38:28,471 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 36 transitions, 182 flow [2024-06-27 23:38:28,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:28,472 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:38:28,472 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:38:28,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 23:38:28,472 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:38:28,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:38:28,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1924987204, now seen corresponding path program 1 times [2024-06-27 23:38:28,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:38:28,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850580538] [2024-06-27 23:38:28,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:38:28,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:38:28,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:38:29,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:38:29,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:38:29,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850580538] [2024-06-27 23:38:29,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850580538] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:38:29,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:38:29,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:38:29,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008298539] [2024-06-27 23:38:29,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:38:29,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:38:29,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:38:29,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:38:29,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:38:29,533 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:38:29,534 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 36 transitions, 182 flow. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:29,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:38:29,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:38:29,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:38:29,698 INFO L124 PetriNetUnfolderBase]: 197/364 cut-off events. [2024-06-27 23:38:29,698 INFO L125 PetriNetUnfolderBase]: For 1012/1012 co-relation queries the response was YES. [2024-06-27 23:38:29,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1231 conditions, 364 events. 197/364 cut-off events. For 1012/1012 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1271 event pairs, 54 based on Foata normal form. 1/363 useless extension candidates. Maximal degree in co-relation 1207. Up to 323 conditions per place. [2024-06-27 23:38:29,701 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 32 selfloop transitions, 13 changer transitions 0/49 dead transitions. [2024-06-27 23:38:29,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 49 transitions, 328 flow [2024-06-27 23:38:29,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:38:29,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:38:29,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 79 transitions. [2024-06-27 23:38:29,703 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42473118279569894 [2024-06-27 23:38:29,703 INFO L175 Difference]: Start difference. First operand has 47 places, 36 transitions, 182 flow. Second operand 6 states and 79 transitions. [2024-06-27 23:38:29,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 49 transitions, 328 flow [2024-06-27 23:38:29,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 49 transitions, 309 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-06-27 23:38:29,705 INFO L231 Difference]: Finished difference. Result has 50 places, 42 transitions, 234 flow [2024-06-27 23:38:29,706 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=234, PETRI_PLACES=50, PETRI_TRANSITIONS=42} [2024-06-27 23:38:29,706 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 20 predicate places. [2024-06-27 23:38:29,706 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 42 transitions, 234 flow [2024-06-27 23:38:29,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:29,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:38:29,707 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:38:29,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 23:38:29,707 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:38:29,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:38:29,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1932113794, now seen corresponding path program 2 times [2024-06-27 23:38:29,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:38:29,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465507673] [2024-06-27 23:38:29,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:38:29,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:38:29,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:38:30,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:38:30,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:38:30,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465507673] [2024-06-27 23:38:30,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465507673] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:38:30,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:38:30,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:38:30,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621692350] [2024-06-27 23:38:30,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:38:30,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:38:30,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:38:30,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:38:30,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:38:30,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:38:30,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 42 transitions, 234 flow. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:30,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:38:30,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:38:30,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:38:30,801 INFO L124 PetriNetUnfolderBase]: 195/361 cut-off events. [2024-06-27 23:38:30,801 INFO L125 PetriNetUnfolderBase]: For 1333/1333 co-relation queries the response was YES. [2024-06-27 23:38:30,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1320 conditions, 361 events. 195/361 cut-off events. For 1333/1333 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1261 event pairs, 53 based on Foata normal form. 1/360 useless extension candidates. Maximal degree in co-relation 1294. Up to 329 conditions per place. [2024-06-27 23:38:30,803 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 33 selfloop transitions, 10 changer transitions 0/47 dead transitions. [2024-06-27 23:38:30,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 47 transitions, 332 flow [2024-06-27 23:38:30,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:38:30,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:38:30,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 75 transitions. [2024-06-27 23:38:30,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-06-27 23:38:30,806 INFO L175 Difference]: Start difference. First operand has 50 places, 42 transitions, 234 flow. Second operand 6 states and 75 transitions. [2024-06-27 23:38:30,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 47 transitions, 332 flow [2024-06-27 23:38:30,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 47 transitions, 317 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-27 23:38:30,809 INFO L231 Difference]: Finished difference. Result has 54 places, 42 transitions, 244 flow [2024-06-27 23:38:30,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=219, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=244, PETRI_PLACES=54, PETRI_TRANSITIONS=42} [2024-06-27 23:38:30,811 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 24 predicate places. [2024-06-27 23:38:30,811 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 42 transitions, 244 flow [2024-06-27 23:38:30,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:30,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:38:30,811 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:38:30,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 23:38:30,812 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:38:30,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:38:30,812 INFO L85 PathProgramCache]: Analyzing trace with hash 435595250, now seen corresponding path program 3 times [2024-06-27 23:38:30,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:38:30,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866124158] [2024-06-27 23:38:30,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:38:30,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:38:30,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:38:31,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:38:31,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:38:31,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866124158] [2024-06-27 23:38:31,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866124158] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:38:31,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:38:31,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:38:31,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842464605] [2024-06-27 23:38:31,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:38:31,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:38:31,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:38:31,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:38:31,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:38:32,032 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:38:32,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 42 transitions, 244 flow. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:32,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:38:32,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:38:32,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:38:32,252 INFO L124 PetriNetUnfolderBase]: 193/358 cut-off events. [2024-06-27 23:38:32,252 INFO L125 PetriNetUnfolderBase]: For 1637/1637 co-relation queries the response was YES. [2024-06-27 23:38:32,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1357 conditions, 358 events. 193/358 cut-off events. For 1637/1637 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1250 event pairs, 53 based on Foata normal form. 1/357 useless extension candidates. Maximal degree in co-relation 1329. Up to 309 conditions per place. [2024-06-27 23:38:32,254 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 35 selfloop transitions, 16 changer transitions 0/55 dead transitions. [2024-06-27 23:38:32,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 55 transitions, 393 flow [2024-06-27 23:38:32,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:38:32,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:38:32,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 83 transitions. [2024-06-27 23:38:32,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44623655913978494 [2024-06-27 23:38:32,256 INFO L175 Difference]: Start difference. First operand has 54 places, 42 transitions, 244 flow. Second operand 6 states and 83 transitions. [2024-06-27 23:38:32,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 55 transitions, 393 flow [2024-06-27 23:38:32,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 55 transitions, 374 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-06-27 23:38:32,258 INFO L231 Difference]: Finished difference. Result has 57 places, 46 transitions, 301 flow [2024-06-27 23:38:32,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=225, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=301, PETRI_PLACES=57, PETRI_TRANSITIONS=46} [2024-06-27 23:38:32,259 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 27 predicate places. [2024-06-27 23:38:32,259 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 46 transitions, 301 flow [2024-06-27 23:38:32,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:32,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:38:32,259 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:38:32,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 23:38:32,260 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:38:32,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:38:32,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1931458640, now seen corresponding path program 1 times [2024-06-27 23:38:32,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:38:32,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367912045] [2024-06-27 23:38:32,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:38:32,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:38:32,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:38:33,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:38:33,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:38:33,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367912045] [2024-06-27 23:38:33,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367912045] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:38:33,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:38:33,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:38:33,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043358666] [2024-06-27 23:38:33,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:38:33,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:38:33,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:38:33,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:38:33,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:38:33,858 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:38:33,858 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 46 transitions, 301 flow. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:33,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:38:33,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:38:33,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:38:34,284 INFO L124 PetriNetUnfolderBase]: 201/363 cut-off events. [2024-06-27 23:38:34,284 INFO L125 PetriNetUnfolderBase]: For 1986/1986 co-relation queries the response was YES. [2024-06-27 23:38:34,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1464 conditions, 363 events. 201/363 cut-off events. For 1986/1986 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1220 event pairs, 52 based on Foata normal form. 3/364 useless extension candidates. Maximal degree in co-relation 1435. Up to 339 conditions per place. [2024-06-27 23:38:34,286 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 42 selfloop transitions, 12 changer transitions 0/56 dead transitions. [2024-06-27 23:38:34,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 56 transitions, 437 flow [2024-06-27 23:38:34,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:38:34,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:38:34,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 81 transitions. [2024-06-27 23:38:34,288 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37327188940092165 [2024-06-27 23:38:34,288 INFO L175 Difference]: Start difference. First operand has 57 places, 46 transitions, 301 flow. Second operand 7 states and 81 transitions. [2024-06-27 23:38:34,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 56 transitions, 437 flow [2024-06-27 23:38:34,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 56 transitions, 407 flow, removed 7 selfloop flow, removed 2 redundant places. [2024-06-27 23:38:34,292 INFO L231 Difference]: Finished difference. Result has 62 places, 48 transitions, 316 flow [2024-06-27 23:38:34,292 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=271, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=316, PETRI_PLACES=62, PETRI_TRANSITIONS=48} [2024-06-27 23:38:34,293 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 32 predicate places. [2024-06-27 23:38:34,293 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 48 transitions, 316 flow [2024-06-27 23:38:34,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:34,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:38:34,294 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:38:34,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 23:38:34,294 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:38:34,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:38:34,294 INFO L85 PathProgramCache]: Analyzing trace with hash -1092172336, now seen corresponding path program 1 times [2024-06-27 23:38:34,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:38:34,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747542656] [2024-06-27 23:38:34,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:38:34,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:38:34,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:38:35,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:38:35,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:38:35,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747542656] [2024-06-27 23:38:35,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747542656] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:38:35,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:38:35,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:38:35,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802584045] [2024-06-27 23:38:35,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:38:35,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:38:35,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:38:35,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:38:35,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:38:35,545 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:38:35,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 48 transitions, 316 flow. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:35,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:38:35,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:38:35,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:38:35,824 INFO L124 PetriNetUnfolderBase]: 194/362 cut-off events. [2024-06-27 23:38:35,824 INFO L125 PetriNetUnfolderBase]: For 2226/2226 co-relation queries the response was YES. [2024-06-27 23:38:35,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1508 conditions, 362 events. 194/362 cut-off events. For 2226/2226 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1260 event pairs, 49 based on Foata normal form. 1/361 useless extension candidates. Maximal degree in co-relation 1476. Up to 322 conditions per place. [2024-06-27 23:38:35,827 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 44 selfloop transitions, 12 changer transitions 0/60 dead transitions. [2024-06-27 23:38:35,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 60 transitions, 472 flow [2024-06-27 23:38:35,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:38:35,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:38:35,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 87 transitions. [2024-06-27 23:38:35,828 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4009216589861751 [2024-06-27 23:38:35,828 INFO L175 Difference]: Start difference. First operand has 62 places, 48 transitions, 316 flow. Second operand 7 states and 87 transitions. [2024-06-27 23:38:35,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 60 transitions, 472 flow [2024-06-27 23:38:35,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 60 transitions, 447 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-27 23:38:35,831 INFO L231 Difference]: Finished difference. Result has 65 places, 52 transitions, 353 flow [2024-06-27 23:38:35,831 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=353, PETRI_PLACES=65, PETRI_TRANSITIONS=52} [2024-06-27 23:38:35,832 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 35 predicate places. [2024-06-27 23:38:35,832 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 52 transitions, 353 flow [2024-06-27 23:38:35,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:35,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:38:35,832 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:38:35,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 23:38:35,833 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:38:35,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:38:35,833 INFO L85 PathProgramCache]: Analyzing trace with hash -1118156792, now seen corresponding path program 2 times [2024-06-27 23:38:35,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:38:35,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311325666] [2024-06-27 23:38:35,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:38:35,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:38:35,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:38:36,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:38:36,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:38:36,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311325666] [2024-06-27 23:38:36,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311325666] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:38:36,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:38:36,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:38:36,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453671538] [2024-06-27 23:38:36,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:38:36,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:38:36,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:38:36,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:38:36,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:38:37,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:38:37,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 52 transitions, 353 flow. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:37,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:38:37,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:38:37,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:38:37,158 INFO L124 PetriNetUnfolderBase]: 202/375 cut-off events. [2024-06-27 23:38:37,158 INFO L125 PetriNetUnfolderBase]: For 2713/2713 co-relation queries the response was YES. [2024-06-27 23:38:37,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1652 conditions, 375 events. 202/375 cut-off events. For 2713/2713 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1329 event pairs, 51 based on Foata normal form. 1/374 useless extension candidates. Maximal degree in co-relation 1618. Up to 319 conditions per place. [2024-06-27 23:38:37,161 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 41 selfloop transitions, 19 changer transitions 0/64 dead transitions. [2024-06-27 23:38:37,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 64 transitions, 547 flow [2024-06-27 23:38:37,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:38:37,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:38:37,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 91 transitions. [2024-06-27 23:38:37,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-27 23:38:37,162 INFO L175 Difference]: Start difference. First operand has 65 places, 52 transitions, 353 flow. Second operand 7 states and 91 transitions. [2024-06-27 23:38:37,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 64 transitions, 547 flow [2024-06-27 23:38:37,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 64 transitions, 518 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-27 23:38:37,166 INFO L231 Difference]: Finished difference. Result has 68 places, 56 transitions, 403 flow [2024-06-27 23:38:37,166 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=403, PETRI_PLACES=68, PETRI_TRANSITIONS=56} [2024-06-27 23:38:37,166 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 38 predicate places. [2024-06-27 23:38:37,166 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 56 transitions, 403 flow [2024-06-27 23:38:37,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:37,167 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:38:37,167 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:38:37,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 23:38:37,167 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:38:37,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:38:37,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1118156606, now seen corresponding path program 1 times [2024-06-27 23:38:37,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:38:37,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383960373] [2024-06-27 23:38:37,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:38:37,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:38:37,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:38:38,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:38:38,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:38:38,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383960373] [2024-06-27 23:38:38,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383960373] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:38:38,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:38:38,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:38:38,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611982902] [2024-06-27 23:38:38,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:38:38,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:38:38,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:38:38,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:38:38,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:38:38,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:38:38,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 56 transitions, 403 flow. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:38,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:38:38,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:38:38,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:38:38,365 INFO L124 PetriNetUnfolderBase]: 224/402 cut-off events. [2024-06-27 23:38:38,365 INFO L125 PetriNetUnfolderBase]: For 3316/3316 co-relation queries the response was YES. [2024-06-27 23:38:38,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1852 conditions, 402 events. 224/402 cut-off events. For 3316/3316 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1401 event pairs, 54 based on Foata normal form. 1/401 useless extension candidates. Maximal degree in co-relation 1817. Up to 366 conditions per place. [2024-06-27 23:38:38,368 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 49 selfloop transitions, 17 changer transitions 0/68 dead transitions. [2024-06-27 23:38:38,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 68 transitions, 603 flow [2024-06-27 23:38:38,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:38:38,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:38:38,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 85 transitions. [2024-06-27 23:38:38,370 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.391705069124424 [2024-06-27 23:38:38,370 INFO L175 Difference]: Start difference. First operand has 68 places, 56 transitions, 403 flow. Second operand 7 states and 85 transitions. [2024-06-27 23:38:38,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 68 transitions, 603 flow [2024-06-27 23:38:38,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 68 transitions, 576 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-27 23:38:38,379 INFO L231 Difference]: Finished difference. Result has 72 places, 60 transitions, 443 flow [2024-06-27 23:38:38,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=376, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=443, PETRI_PLACES=72, PETRI_TRANSITIONS=60} [2024-06-27 23:38:38,380 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 42 predicate places. [2024-06-27 23:38:38,380 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 60 transitions, 443 flow [2024-06-27 23:38:38,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:38,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:38:38,380 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:38:38,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 23:38:38,380 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:38:38,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:38:38,381 INFO L85 PathProgramCache]: Analyzing trace with hash -234013906, now seen corresponding path program 3 times [2024-06-27 23:38:38,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:38:38,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507694662] [2024-06-27 23:38:38,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:38:38,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:38:38,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:38:39,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:38:39,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:38:39,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507694662] [2024-06-27 23:38:39,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507694662] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:38:39,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:38:39,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:38:39,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863323150] [2024-06-27 23:38:39,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:38:39,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:38:39,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:38:39,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:38:39,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:38:39,420 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:38:39,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 60 transitions, 443 flow. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:39,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:38:39,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:38:39,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:38:39,583 INFO L124 PetriNetUnfolderBase]: 210/387 cut-off events. [2024-06-27 23:38:39,583 INFO L125 PetriNetUnfolderBase]: For 3827/3827 co-relation queries the response was YES. [2024-06-27 23:38:39,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1864 conditions, 387 events. 210/387 cut-off events. For 3827/3827 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1378 event pairs, 50 based on Foata normal form. 1/386 useless extension candidates. Maximal degree in co-relation 1827. Up to 346 conditions per place. [2024-06-27 23:38:39,585 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 48 selfloop transitions, 12 changer transitions 0/66 dead transitions. [2024-06-27 23:38:39,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 66 transitions, 577 flow [2024-06-27 23:38:39,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:38:39,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:38:39,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 85 transitions. [2024-06-27 23:38:39,586 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.391705069124424 [2024-06-27 23:38:39,586 INFO L175 Difference]: Start difference. First operand has 72 places, 60 transitions, 443 flow. Second operand 7 states and 85 transitions. [2024-06-27 23:38:39,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 66 transitions, 577 flow [2024-06-27 23:38:39,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 66 transitions, 548 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-27 23:38:39,592 INFO L231 Difference]: Finished difference. Result has 76 places, 60 transitions, 443 flow [2024-06-27 23:38:39,592 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=443, PETRI_PLACES=76, PETRI_TRANSITIONS=60} [2024-06-27 23:38:39,593 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 46 predicate places. [2024-06-27 23:38:39,593 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 60 transitions, 443 flow [2024-06-27 23:38:39,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:39,593 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:38:39,593 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:38:39,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 23:38:39,593 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:38:39,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:38:39,594 INFO L85 PathProgramCache]: Analyzing trace with hash -1113514976, now seen corresponding path program 2 times [2024-06-27 23:38:39,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:38:39,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731757813] [2024-06-27 23:38:39,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:38:39,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:38:39,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:38:40,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:38:40,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:38:40,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731757813] [2024-06-27 23:38:40,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731757813] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:38:40,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:38:40,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:38:40,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417664211] [2024-06-27 23:38:40,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:38:40,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:38:40,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:38:40,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:38:40,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:38:40,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:38:40,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 60 transitions, 443 flow. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:40,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:38:40,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:38:40,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:38:40,818 INFO L124 PetriNetUnfolderBase]: 225/404 cut-off events. [2024-06-27 23:38:40,819 INFO L125 PetriNetUnfolderBase]: For 4253/4253 co-relation queries the response was YES. [2024-06-27 23:38:40,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1984 conditions, 404 events. 225/404 cut-off events. For 4253/4253 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1408 event pairs, 52 based on Foata normal form. 1/403 useless extension candidates. Maximal degree in co-relation 1945. Up to 378 conditions per place. [2024-06-27 23:38:40,821 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 52 selfloop transitions, 15 changer transitions 0/69 dead transitions. [2024-06-27 23:38:40,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 69 transitions, 637 flow [2024-06-27 23:38:40,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:38:40,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:38:40,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 82 transitions. [2024-06-27 23:38:40,822 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3778801843317972 [2024-06-27 23:38:40,822 INFO L175 Difference]: Start difference. First operand has 76 places, 60 transitions, 443 flow. Second operand 7 states and 82 transitions. [2024-06-27 23:38:40,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 69 transitions, 637 flow [2024-06-27 23:38:40,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 69 transitions, 604 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-27 23:38:40,828 INFO L231 Difference]: Finished difference. Result has 77 places, 62 transitions, 461 flow [2024-06-27 23:38:40,828 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=410, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=461, PETRI_PLACES=77, PETRI_TRANSITIONS=62} [2024-06-27 23:38:40,828 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 47 predicate places. [2024-06-27 23:38:40,828 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 62 transitions, 461 flow [2024-06-27 23:38:40,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:40,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:38:40,829 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:38:40,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 23:38:40,829 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:38:40,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:38:40,829 INFO L85 PathProgramCache]: Analyzing trace with hash -223058854, now seen corresponding path program 3 times [2024-06-27 23:38:40,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:38:40,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421698984] [2024-06-27 23:38:40,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:38:40,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:38:40,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:38:41,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:38:41,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:38:41,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421698984] [2024-06-27 23:38:41,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421698984] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:38:41,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:38:41,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:38:41,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108939383] [2024-06-27 23:38:41,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:38:41,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:38:41,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:38:41,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:38:41,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:38:41,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:38:41,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 62 transitions, 461 flow. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:41,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:38:41,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:38:41,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:38:42,104 INFO L124 PetriNetUnfolderBase]: 223/401 cut-off events. [2024-06-27 23:38:42,105 INFO L125 PetriNetUnfolderBase]: For 4678/4678 co-relation queries the response was YES. [2024-06-27 23:38:42,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1998 conditions, 401 events. 223/401 cut-off events. For 4678/4678 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1398 event pairs, 52 based on Foata normal form. 1/400 useless extension candidates. Maximal degree in co-relation 1958. Up to 382 conditions per place. [2024-06-27 23:38:42,108 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 54 selfloop transitions, 12 changer transitions 0/68 dead transitions. [2024-06-27 23:38:42,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 68 transitions, 607 flow [2024-06-27 23:38:42,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:38:42,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:38:42,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 79 transitions. [2024-06-27 23:38:42,109 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3640552995391705 [2024-06-27 23:38:42,109 INFO L175 Difference]: Start difference. First operand has 77 places, 62 transitions, 461 flow. Second operand 7 states and 79 transitions. [2024-06-27 23:38:42,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 68 transitions, 607 flow [2024-06-27 23:38:42,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 68 transitions, 562 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-27 23:38:42,117 INFO L231 Difference]: Finished difference. Result has 79 places, 62 transitions, 445 flow [2024-06-27 23:38:42,117 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=416, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=445, PETRI_PLACES=79, PETRI_TRANSITIONS=62} [2024-06-27 23:38:42,118 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 49 predicate places. [2024-06-27 23:38:42,118 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 62 transitions, 445 flow [2024-06-27 23:38:42,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:42,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:38:42,118 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:38:42,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 23:38:42,119 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:38:42,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:38:42,119 INFO L85 PathProgramCache]: Analyzing trace with hash 1916425630, now seen corresponding path program 4 times [2024-06-27 23:38:42,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:38:42,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044035112] [2024-06-27 23:38:42,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:38:42,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:38:42,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:38:43,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:38:43,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:38:43,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044035112] [2024-06-27 23:38:43,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044035112] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:38:43,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:38:43,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:38:43,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376323873] [2024-06-27 23:38:43,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:38:43,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:38:43,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:38:43,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:38:43,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:38:43,361 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:38:43,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 62 transitions, 445 flow. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:43,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:38:43,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:38:43,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:38:43,704 INFO L124 PetriNetUnfolderBase]: 223/409 cut-off events. [2024-06-27 23:38:43,704 INFO L125 PetriNetUnfolderBase]: For 5470/5470 co-relation queries the response was YES. [2024-06-27 23:38:43,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2074 conditions, 409 events. 223/409 cut-off events. For 5470/5470 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1479 event pairs, 47 based on Foata normal form. 1/408 useless extension candidates. Maximal degree in co-relation 2033. Up to 339 conditions per place. [2024-06-27 23:38:43,707 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 54 selfloop transitions, 22 changer transitions 0/83 dead transitions. [2024-06-27 23:38:43,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 83 transitions, 725 flow [2024-06-27 23:38:43,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:38:43,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:38:43,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 105 transitions. [2024-06-27 23:38:43,708 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42338709677419356 [2024-06-27 23:38:43,709 INFO L175 Difference]: Start difference. First operand has 79 places, 62 transitions, 445 flow. Second operand 8 states and 105 transitions. [2024-06-27 23:38:43,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 83 transitions, 725 flow [2024-06-27 23:38:43,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 83 transitions, 696 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-27 23:38:43,715 INFO L231 Difference]: Finished difference. Result has 82 places, 69 transitions, 539 flow [2024-06-27 23:38:43,715 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=416, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=539, PETRI_PLACES=82, PETRI_TRANSITIONS=69} [2024-06-27 23:38:43,716 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 52 predicate places. [2024-06-27 23:38:43,716 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 69 transitions, 539 flow [2024-06-27 23:38:43,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:43,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:38:43,716 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:38:43,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 23:38:43,716 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:38:43,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:38:43,717 INFO L85 PathProgramCache]: Analyzing trace with hash 591648446, now seen corresponding path program 5 times [2024-06-27 23:38:43,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:38:43,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106696207] [2024-06-27 23:38:43,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:38:43,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:38:43,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:38:45,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:38:45,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:38:45,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106696207] [2024-06-27 23:38:45,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106696207] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:38:45,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:38:45,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:38:45,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813048795] [2024-06-27 23:38:45,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:38:45,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:38:45,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:38:45,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:38:45,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:38:45,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:38:45,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 69 transitions, 539 flow. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:45,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:38:45,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:38:45,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:38:45,510 INFO L124 PetriNetUnfolderBase]: 221/406 cut-off events. [2024-06-27 23:38:45,510 INFO L125 PetriNetUnfolderBase]: For 6125/6125 co-relation queries the response was YES. [2024-06-27 23:38:45,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2157 conditions, 406 events. 221/406 cut-off events. For 6125/6125 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1449 event pairs, 47 based on Foata normal form. 1/405 useless extension candidates. Maximal degree in co-relation 2115. Up to 343 conditions per place. [2024-06-27 23:38:45,513 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 56 selfloop transitions, 18 changer transitions 0/81 dead transitions. [2024-06-27 23:38:45,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 81 transitions, 728 flow [2024-06-27 23:38:45,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:38:45,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:38:45,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 94 transitions. [2024-06-27 23:38:45,514 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43317972350230416 [2024-06-27 23:38:45,514 INFO L175 Difference]: Start difference. First operand has 82 places, 69 transitions, 539 flow. Second operand 7 states and 94 transitions. [2024-06-27 23:38:45,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 81 transitions, 728 flow [2024-06-27 23:38:45,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 81 transitions, 675 flow, removed 16 selfloop flow, removed 3 redundant places. [2024-06-27 23:38:45,522 INFO L231 Difference]: Finished difference. Result has 86 places, 70 transitions, 538 flow [2024-06-27 23:38:45,522 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=487, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=538, PETRI_PLACES=86, PETRI_TRANSITIONS=70} [2024-06-27 23:38:45,523 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 56 predicate places. [2024-06-27 23:38:45,523 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 70 transitions, 538 flow [2024-06-27 23:38:45,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:45,523 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:38:45,523 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:38:45,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 23:38:45,523 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:38:45,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:38:45,524 INFO L85 PathProgramCache]: Analyzing trace with hash 591768416, now seen corresponding path program 6 times [2024-06-27 23:38:45,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:38:45,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298850551] [2024-06-27 23:38:45,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:38:45,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:38:45,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:38:46,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:38:46,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:38:46,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298850551] [2024-06-27 23:38:46,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298850551] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:38:46,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:38:46,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:38:46,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115832410] [2024-06-27 23:38:46,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:38:46,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:38:46,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:38:46,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:38:46,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:38:46,923 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:38:46,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 70 transitions, 538 flow. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:46,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:38:46,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:38:46,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:38:47,205 INFO L124 PetriNetUnfolderBase]: 219/404 cut-off events. [2024-06-27 23:38:47,205 INFO L125 PetriNetUnfolderBase]: For 6593/6593 co-relation queries the response was YES. [2024-06-27 23:38:47,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2159 conditions, 404 events. 219/404 cut-off events. For 6593/6593 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1462 event pairs, 50 based on Foata normal form. 1/403 useless extension candidates. Maximal degree in co-relation 2115. Up to 313 conditions per place. [2024-06-27 23:38:47,208 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 45 selfloop transitions, 30 changer transitions 0/82 dead transitions. [2024-06-27 23:38:47,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 82 transitions, 738 flow [2024-06-27 23:38:47,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:38:47,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:38:47,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 96 transitions. [2024-06-27 23:38:47,211 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4423963133640553 [2024-06-27 23:38:47,211 INFO L175 Difference]: Start difference. First operand has 86 places, 70 transitions, 538 flow. Second operand 7 states and 96 transitions. [2024-06-27 23:38:47,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 82 transitions, 738 flow [2024-06-27 23:38:47,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 82 transitions, 698 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-27 23:38:47,220 INFO L231 Difference]: Finished difference. Result has 89 places, 72 transitions, 591 flow [2024-06-27 23:38:47,220 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=498, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=591, PETRI_PLACES=89, PETRI_TRANSITIONS=72} [2024-06-27 23:38:47,220 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 59 predicate places. [2024-06-27 23:38:47,220 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 72 transitions, 591 flow [2024-06-27 23:38:47,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:47,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:38:47,222 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:38:47,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 23:38:47,222 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:38:47,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:38:47,222 INFO L85 PathProgramCache]: Analyzing trace with hash 591768602, now seen corresponding path program 4 times [2024-06-27 23:38:47,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:38:47,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616307214] [2024-06-27 23:38:47,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:38:47,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:38:47,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:38:48,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:38:48,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:38:48,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616307214] [2024-06-27 23:38:48,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616307214] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:38:48,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:38:48,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:38:48,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488559521] [2024-06-27 23:38:48,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:38:48,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:38:48,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:38:48,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:38:48,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:38:48,583 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:38:48,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 72 transitions, 591 flow. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:48,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:38:48,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:38:48,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:38:48,882 INFO L124 PetriNetUnfolderBase]: 229/412 cut-off events. [2024-06-27 23:38:48,883 INFO L125 PetriNetUnfolderBase]: For 7036/7036 co-relation queries the response was YES. [2024-06-27 23:38:48,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2267 conditions, 412 events. 229/412 cut-off events. For 7036/7036 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1446 event pairs, 52 based on Foata normal form. 1/411 useless extension candidates. Maximal degree in co-relation 2222. Up to 364 conditions per place. [2024-06-27 23:38:48,886 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 59 selfloop transitions, 23 changer transitions 0/84 dead transitions. [2024-06-27 23:38:48,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 84 transitions, 797 flow [2024-06-27 23:38:48,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:38:48,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:38:48,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 89 transitions. [2024-06-27 23:38:48,887 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41013824884792627 [2024-06-27 23:38:48,887 INFO L175 Difference]: Start difference. First operand has 89 places, 72 transitions, 591 flow. Second operand 7 states and 89 transitions. [2024-06-27 23:38:48,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 84 transitions, 797 flow [2024-06-27 23:38:48,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 84 transitions, 720 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-27 23:38:48,896 INFO L231 Difference]: Finished difference. Result has 91 places, 74 transitions, 585 flow [2024-06-27 23:38:48,896 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=514, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=585, PETRI_PLACES=91, PETRI_TRANSITIONS=74} [2024-06-27 23:38:48,897 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 61 predicate places. [2024-06-27 23:38:48,897 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 74 transitions, 585 flow [2024-06-27 23:38:48,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:48,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:38:48,897 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:38:48,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 23:38:48,897 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:38:48,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:38:48,898 INFO L85 PathProgramCache]: Analyzing trace with hash 467834253, now seen corresponding path program 1 times [2024-06-27 23:38:48,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:38:48,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022145530] [2024-06-27 23:38:48,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:38:48,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:38:48,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:38:50,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:38:50,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:38:50,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022145530] [2024-06-27 23:38:50,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022145530] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:38:50,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:38:50,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:38:50,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437094715] [2024-06-27 23:38:50,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:38:50,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:38:50,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:38:50,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:38:50,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:38:50,490 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:38:50,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 74 transitions, 585 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:50,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:38:50,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:38:50,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:38:50,848 INFO L124 PetriNetUnfolderBase]: 229/422 cut-off events. [2024-06-27 23:38:50,849 INFO L125 PetriNetUnfolderBase]: For 8011/8011 co-relation queries the response was YES. [2024-06-27 23:38:50,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2355 conditions, 422 events. 229/422 cut-off events. For 8011/8011 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1562 event pairs, 53 based on Foata normal form. 1/421 useless extension candidates. Maximal degree in co-relation 2309. Up to 363 conditions per place. [2024-06-27 23:38:50,855 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 66 selfloop transitions, 18 changer transitions 0/92 dead transitions. [2024-06-27 23:38:50,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 92 transitions, 875 flow [2024-06-27 23:38:50,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:38:50,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:38:50,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-27 23:38:50,859 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3774193548387097 [2024-06-27 23:38:50,859 INFO L175 Difference]: Start difference. First operand has 91 places, 74 transitions, 585 flow. Second operand 10 states and 117 transitions. [2024-06-27 23:38:50,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 92 transitions, 875 flow [2024-06-27 23:38:50,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 92 transitions, 820 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-27 23:38:50,870 INFO L231 Difference]: Finished difference. Result has 97 places, 80 transitions, 635 flow [2024-06-27 23:38:50,870 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=530, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=635, PETRI_PLACES=97, PETRI_TRANSITIONS=80} [2024-06-27 23:38:50,871 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 67 predicate places. [2024-06-27 23:38:50,871 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 80 transitions, 635 flow [2024-06-27 23:38:50,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:50,871 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:38:50,871 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:38:50,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 23:38:50,871 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:38:50,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:38:50,872 INFO L85 PathProgramCache]: Analyzing trace with hash -306840599, now seen corresponding path program 2 times [2024-06-27 23:38:50,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:38:50,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109780412] [2024-06-27 23:38:50,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:38:50,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:38:50,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:38:52,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:38:52,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:38:52,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109780412] [2024-06-27 23:38:52,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109780412] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:38:52,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:38:52,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:38:52,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212327594] [2024-06-27 23:38:52,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:38:52,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:38:52,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:38:52,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:38:52,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:38:52,238 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:38:52,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 80 transitions, 635 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:52,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:38:52,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:38:52,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:38:52,535 INFO L124 PetriNetUnfolderBase]: 227/418 cut-off events. [2024-06-27 23:38:52,536 INFO L125 PetriNetUnfolderBase]: For 8541/8541 co-relation queries the response was YES. [2024-06-27 23:38:52,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2384 conditions, 418 events. 227/418 cut-off events. For 8541/8541 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1541 event pairs, 53 based on Foata normal form. 1/417 useless extension candidates. Maximal degree in co-relation 2335. Up to 369 conditions per place. [2024-06-27 23:38:52,539 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 67 selfloop transitions, 14 changer transitions 0/89 dead transitions. [2024-06-27 23:38:52,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 89 transitions, 821 flow [2024-06-27 23:38:52,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:38:52,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:38:52,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 97 transitions. [2024-06-27 23:38:52,541 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3911290322580645 [2024-06-27 23:38:52,541 INFO L175 Difference]: Start difference. First operand has 97 places, 80 transitions, 635 flow. Second operand 8 states and 97 transitions. [2024-06-27 23:38:52,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 89 transitions, 821 flow [2024-06-27 23:38:52,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 89 transitions, 774 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-27 23:38:52,552 INFO L231 Difference]: Finished difference. Result has 99 places, 80 transitions, 621 flow [2024-06-27 23:38:52,552 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=588, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=621, PETRI_PLACES=99, PETRI_TRANSITIONS=80} [2024-06-27 23:38:52,553 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 69 predicate places. [2024-06-27 23:38:52,553 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 80 transitions, 621 flow [2024-06-27 23:38:52,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:52,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:38:52,554 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:38:52,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 23:38:52,554 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:38:52,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:38:52,554 INFO L85 PathProgramCache]: Analyzing trace with hash -306840444, now seen corresponding path program 1 times [2024-06-27 23:38:52,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:38:52,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137601574] [2024-06-27 23:38:52,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:38:52,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:38:52,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:38:53,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:38:53,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:38:53,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137601574] [2024-06-27 23:38:53,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137601574] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:38:53,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:38:53,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:38:53,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479598880] [2024-06-27 23:38:53,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:38:53,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:38:53,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:38:53,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:38:53,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:38:53,740 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:38:53,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 80 transitions, 621 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:53,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:38:53,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:38:53,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:38:54,018 INFO L124 PetriNetUnfolderBase]: 242/435 cut-off events. [2024-06-27 23:38:54,018 INFO L125 PetriNetUnfolderBase]: For 9245/9245 co-relation queries the response was YES. [2024-06-27 23:38:54,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2497 conditions, 435 events. 242/435 cut-off events. For 9245/9245 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1573 event pairs, 54 based on Foata normal form. 1/434 useless extension candidates. Maximal degree in co-relation 2446. Up to 408 conditions per place. [2024-06-27 23:38:54,022 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 75 selfloop transitions, 14 changer transitions 0/91 dead transitions. [2024-06-27 23:38:54,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 91 transitions, 843 flow [2024-06-27 23:38:54,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:38:54,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:38:54,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 90 transitions. [2024-06-27 23:38:54,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3629032258064516 [2024-06-27 23:38:54,023 INFO L175 Difference]: Start difference. First operand has 99 places, 80 transitions, 621 flow. Second operand 8 states and 90 transitions. [2024-06-27 23:38:54,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 91 transitions, 843 flow [2024-06-27 23:38:54,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 91 transitions, 816 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-27 23:38:54,036 INFO L231 Difference]: Finished difference. Result has 101 places, 82 transitions, 651 flow [2024-06-27 23:38:54,036 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=594, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=651, PETRI_PLACES=101, PETRI_TRANSITIONS=82} [2024-06-27 23:38:54,036 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 71 predicate places. [2024-06-27 23:38:54,036 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 82 transitions, 651 flow [2024-06-27 23:38:54,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:54,037 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:38:54,037 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:38:54,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 23:38:54,037 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:38:54,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:38:54,038 INFO L85 PathProgramCache]: Analyzing trace with hash 471643688, now seen corresponding path program 2 times [2024-06-27 23:38:54,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:38:54,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365613363] [2024-06-27 23:38:54,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:38:54,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:38:54,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:38:55,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:38:55,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:38:55,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365613363] [2024-06-27 23:38:55,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365613363] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:38:55,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:38:55,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:38:55,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592132695] [2024-06-27 23:38:55,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:38:55,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:38:55,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:38:55,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:38:55,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:38:55,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:38:55,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 82 transitions, 651 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:55,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:38:55,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:38:55,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:38:55,435 INFO L124 PetriNetUnfolderBase]: 255/456 cut-off events. [2024-06-27 23:38:55,435 INFO L125 PetriNetUnfolderBase]: For 10678/10678 co-relation queries the response was YES. [2024-06-27 23:38:55,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2734 conditions, 456 events. 255/456 cut-off events. For 10678/10678 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1676 event pairs, 57 based on Foata normal form. 1/455 useless extension candidates. Maximal degree in co-relation 2682. Up to 387 conditions per place. [2024-06-27 23:38:55,440 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 68 selfloop transitions, 28 changer transitions 0/98 dead transitions. [2024-06-27 23:38:55,441 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 98 transitions, 1031 flow [2024-06-27 23:38:55,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:38:55,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:38:55,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 99 transitions. [2024-06-27 23:38:55,444 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39919354838709675 [2024-06-27 23:38:55,444 INFO L175 Difference]: Start difference. First operand has 101 places, 82 transitions, 651 flow. Second operand 8 states and 99 transitions. [2024-06-27 23:38:55,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 98 transitions, 1031 flow [2024-06-27 23:38:55,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 98 transitions, 990 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-27 23:38:55,457 INFO L231 Difference]: Finished difference. Result has 103 places, 88 transitions, 747 flow [2024-06-27 23:38:55,458 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=610, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=747, PETRI_PLACES=103, PETRI_TRANSITIONS=88} [2024-06-27 23:38:55,458 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 73 predicate places. [2024-06-27 23:38:55,458 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 88 transitions, 747 flow [2024-06-27 23:38:55,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:55,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:38:55,459 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:38:55,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 23:38:55,459 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:38:55,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:38:55,459 INFO L85 PathProgramCache]: Analyzing trace with hash 471643533, now seen corresponding path program 3 times [2024-06-27 23:38:55,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:38:55,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76908059] [2024-06-27 23:38:55,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:38:55,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:38:55,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:38:56,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:38:56,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:38:56,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76908059] [2024-06-27 23:38:56,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76908059] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:38:56,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:38:56,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:38:56,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843869030] [2024-06-27 23:38:56,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:38:56,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:38:56,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:38:56,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:38:56,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:38:56,840 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:38:56,840 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 88 transitions, 747 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:56,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:38:56,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:38:56,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:38:57,038 INFO L124 PetriNetUnfolderBase]: 248/451 cut-off events. [2024-06-27 23:38:57,039 INFO L125 PetriNetUnfolderBase]: For 11950/11950 co-relation queries the response was YES. [2024-06-27 23:38:57,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2796 conditions, 451 events. 248/451 cut-off events. For 11950/11950 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1688 event pairs, 54 based on Foata normal form. 1/450 useless extension candidates. Maximal degree in co-relation 2743. Up to 377 conditions per place. [2024-06-27 23:38:57,043 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 65 selfloop transitions, 21 changer transitions 0/98 dead transitions. [2024-06-27 23:38:57,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 98 transitions, 963 flow [2024-06-27 23:38:57,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:38:57,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:38:57,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 100 transitions. [2024-06-27 23:38:57,045 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-06-27 23:38:57,045 INFO L175 Difference]: Start difference. First operand has 103 places, 88 transitions, 747 flow. Second operand 8 states and 100 transitions. [2024-06-27 23:38:57,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 98 transitions, 963 flow [2024-06-27 23:38:57,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 98 transitions, 921 flow, removed 12 selfloop flow, removed 3 redundant places. [2024-06-27 23:38:57,061 INFO L231 Difference]: Finished difference. Result has 108 places, 90 transitions, 780 flow [2024-06-27 23:38:57,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=705, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=780, PETRI_PLACES=108, PETRI_TRANSITIONS=90} [2024-06-27 23:38:57,062 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 78 predicate places. [2024-06-27 23:38:57,062 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 90 transitions, 780 flow [2024-06-27 23:38:57,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:57,063 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:38:57,063 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:38:57,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 23:38:57,063 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:38:57,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:38:57,064 INFO L85 PathProgramCache]: Analyzing trace with hash 471649485, now seen corresponding path program 1 times [2024-06-27 23:38:57,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:38:57,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177892836] [2024-06-27 23:38:57,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:38:57,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:38:57,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:38:58,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:38:58,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:38:58,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177892836] [2024-06-27 23:38:58,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177892836] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:38:58,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:38:58,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:38:58,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361973499] [2024-06-27 23:38:58,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:38:58,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:38:58,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:38:58,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:38:58,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:38:58,180 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:38:58,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 90 transitions, 780 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:58,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:38:58,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:38:58,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:38:58,476 INFO L124 PetriNetUnfolderBase]: 282/500 cut-off events. [2024-06-27 23:38:58,477 INFO L125 PetriNetUnfolderBase]: For 14333/14333 co-relation queries the response was YES. [2024-06-27 23:38:58,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3165 conditions, 500 events. 282/500 cut-off events. For 14333/14333 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1884 event pairs, 61 based on Foata normal form. 3/501 useless extension candidates. Maximal degree in co-relation 3110. Up to 433 conditions per place. [2024-06-27 23:38:58,482 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 85 selfloop transitions, 22 changer transitions 0/109 dead transitions. [2024-06-27 23:38:58,482 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 109 transitions, 1116 flow [2024-06-27 23:38:58,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:38:58,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:38:58,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 100 transitions. [2024-06-27 23:38:58,484 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-06-27 23:38:58,484 INFO L175 Difference]: Start difference. First operand has 108 places, 90 transitions, 780 flow. Second operand 8 states and 100 transitions. [2024-06-27 23:38:58,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 109 transitions, 1116 flow [2024-06-27 23:38:58,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 109 transitions, 1057 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-27 23:38:58,504 INFO L231 Difference]: Finished difference. Result has 111 places, 96 transitions, 828 flow [2024-06-27 23:38:58,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=721, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=828, PETRI_PLACES=111, PETRI_TRANSITIONS=96} [2024-06-27 23:38:58,505 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 81 predicate places. [2024-06-27 23:38:58,505 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 96 transitions, 828 flow [2024-06-27 23:38:58,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:58,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:38:58,506 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:38:58,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 23:38:58,506 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:38:58,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:38:58,507 INFO L85 PathProgramCache]: Analyzing trace with hash 471649268, now seen corresponding path program 3 times [2024-06-27 23:38:58,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:38:58,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033713734] [2024-06-27 23:38:58,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:38:58,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:38:58,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:38:59,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:38:59,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:38:59,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033713734] [2024-06-27 23:38:59,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033713734] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:38:59,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:38:59,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:38:59,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740913731] [2024-06-27 23:38:59,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:38:59,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:38:59,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:38:59,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:38:59,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:38:59,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:38:59,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 96 transitions, 828 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:59,624 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:38:59,624 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:38:59,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:38:59,848 INFO L124 PetriNetUnfolderBase]: 280/497 cut-off events. [2024-06-27 23:38:59,848 INFO L125 PetriNetUnfolderBase]: For 14353/14353 co-relation queries the response was YES. [2024-06-27 23:38:59,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3234 conditions, 497 events. 280/497 cut-off events. For 14353/14353 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1870 event pairs, 60 based on Foata normal form. 1/496 useless extension candidates. Maximal degree in co-relation 3176. Up to 429 conditions per place. [2024-06-27 23:38:59,858 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 74 selfloop transitions, 29 changer transitions 0/105 dead transitions. [2024-06-27 23:38:59,859 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 105 transitions, 1108 flow [2024-06-27 23:38:59,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:38:59,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:38:59,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 97 transitions. [2024-06-27 23:38:59,860 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3911290322580645 [2024-06-27 23:38:59,860 INFO L175 Difference]: Start difference. First operand has 111 places, 96 transitions, 828 flow. Second operand 8 states and 97 transitions. [2024-06-27 23:38:59,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 105 transitions, 1108 flow [2024-06-27 23:38:59,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 105 transitions, 1073 flow, removed 13 selfloop flow, removed 3 redundant places. [2024-06-27 23:38:59,880 INFO L231 Difference]: Finished difference. Result has 116 places, 96 transitions, 856 flow [2024-06-27 23:38:59,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=793, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=856, PETRI_PLACES=116, PETRI_TRANSITIONS=96} [2024-06-27 23:38:59,881 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 86 predicate places. [2024-06-27 23:38:59,881 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 96 transitions, 856 flow [2024-06-27 23:38:59,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:59,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:38:59,881 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:38:59,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 23:38:59,882 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:38:59,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:38:59,882 INFO L85 PathProgramCache]: Analyzing trace with hash 705899183, now seen corresponding path program 2 times [2024-06-27 23:38:59,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:38:59,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239162057] [2024-06-27 23:38:59,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:38:59,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:38:59,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:39:00,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:39:00,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:39:00,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239162057] [2024-06-27 23:39:00,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239162057] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:39:00,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:39:00,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:39:00,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438907487] [2024-06-27 23:39:00,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:39:00,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:39:00,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:39:00,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:39:00,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:39:00,912 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:39:00,912 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 96 transitions, 856 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:00,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:39:00,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:39:00,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:39:01,198 INFO L124 PetriNetUnfolderBase]: 289/512 cut-off events. [2024-06-27 23:39:01,199 INFO L125 PetriNetUnfolderBase]: For 16213/16213 co-relation queries the response was YES. [2024-06-27 23:39:01,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3358 conditions, 512 events. 289/512 cut-off events. For 16213/16213 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1929 event pairs, 58 based on Foata normal form. 3/513 useless extension candidates. Maximal degree in co-relation 3297. Up to 483 conditions per place. [2024-06-27 23:39:01,202 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 91 selfloop transitions, 14 changer transitions 0/107 dead transitions. [2024-06-27 23:39:01,202 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 107 transitions, 1108 flow [2024-06-27 23:39:01,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:39:01,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:39:01,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 90 transitions. [2024-06-27 23:39:01,203 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3629032258064516 [2024-06-27 23:39:01,203 INFO L175 Difference]: Start difference. First operand has 116 places, 96 transitions, 856 flow. Second operand 8 states and 90 transitions. [2024-06-27 23:39:01,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 107 transitions, 1108 flow [2024-06-27 23:39:01,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 107 transitions, 1045 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-27 23:39:01,221 INFO L231 Difference]: Finished difference. Result has 117 places, 98 transitions, 850 flow [2024-06-27 23:39:01,221 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=793, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=850, PETRI_PLACES=117, PETRI_TRANSITIONS=98} [2024-06-27 23:39:01,226 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 87 predicate places. [2024-06-27 23:39:01,226 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 98 transitions, 850 flow [2024-06-27 23:39:01,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:01,226 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:39:01,227 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:39:01,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 23:39:01,228 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:39:01,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:39:01,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1675110959, now seen corresponding path program 3 times [2024-06-27 23:39:01,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:39:01,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526265984] [2024-06-27 23:39:01,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:39:01,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:39:01,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:39:02,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:39:02,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:39:02,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526265984] [2024-06-27 23:39:02,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526265984] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:39:02,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:39:02,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:39:02,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058436326] [2024-06-27 23:39:02,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:39:02,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:39:02,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:39:02,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:39:02,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:39:02,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:39:02,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 98 transitions, 850 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:02,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:39:02,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:39:02,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:39:02,695 INFO L124 PetriNetUnfolderBase]: 298/527 cut-off events. [2024-06-27 23:39:02,696 INFO L125 PetriNetUnfolderBase]: For 17540/17540 co-relation queries the response was YES. [2024-06-27 23:39:02,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3464 conditions, 527 events. 298/527 cut-off events. For 17540/17540 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2004 event pairs, 58 based on Foata normal form. 3/528 useless extension candidates. Maximal degree in co-relation 3402. Up to 486 conditions per place. [2024-06-27 23:39:02,700 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 92 selfloop transitions, 17 changer transitions 0/111 dead transitions. [2024-06-27 23:39:02,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 111 transitions, 1120 flow [2024-06-27 23:39:02,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:39:02,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:39:02,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 94 transitions. [2024-06-27 23:39:02,701 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3790322580645161 [2024-06-27 23:39:02,702 INFO L175 Difference]: Start difference. First operand has 117 places, 98 transitions, 850 flow. Second operand 8 states and 94 transitions. [2024-06-27 23:39:02,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 111 transitions, 1120 flow [2024-06-27 23:39:02,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 111 transitions, 1074 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-27 23:39:02,727 INFO L231 Difference]: Finished difference. Result has 119 places, 100 transitions, 871 flow [2024-06-27 23:39:02,727 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=804, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=871, PETRI_PLACES=119, PETRI_TRANSITIONS=100} [2024-06-27 23:39:02,729 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 89 predicate places. [2024-06-27 23:39:02,729 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 100 transitions, 871 flow [2024-06-27 23:39:02,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:02,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:39:02,730 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:39:02,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 23:39:02,730 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:39:02,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:39:02,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1667753512, now seen corresponding path program 4 times [2024-06-27 23:39:02,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:39:02,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574519130] [2024-06-27 23:39:02,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:39:02,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:39:02,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:39:03,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:39:03,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:39:03,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574519130] [2024-06-27 23:39:03,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574519130] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:39:03,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:39:03,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:39:03,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323989410] [2024-06-27 23:39:03,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:39:03,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:39:03,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:39:03,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:39:03,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:39:03,844 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:39:03,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 100 transitions, 871 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:03,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:39:03,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:39:03,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:39:04,077 INFO L124 PetriNetUnfolderBase]: 301/532 cut-off events. [2024-06-27 23:39:04,079 INFO L125 PetriNetUnfolderBase]: For 17832/17832 co-relation queries the response was YES. [2024-06-27 23:39:04,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3533 conditions, 532 events. 301/532 cut-off events. For 17832/17832 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2027 event pairs, 58 based on Foata normal form. 1/531 useless extension candidates. Maximal degree in co-relation 3471. Up to 494 conditions per place. [2024-06-27 23:39:04,083 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 88 selfloop transitions, 20 changer transitions 0/110 dead transitions. [2024-06-27 23:39:04,084 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 110 transitions, 1191 flow [2024-06-27 23:39:04,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:39:04,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:39:04,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 92 transitions. [2024-06-27 23:39:04,085 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-27 23:39:04,085 INFO L175 Difference]: Start difference. First operand has 119 places, 100 transitions, 871 flow. Second operand 8 states and 92 transitions. [2024-06-27 23:39:04,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 110 transitions, 1191 flow [2024-06-27 23:39:04,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 110 transitions, 1144 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-27 23:39:04,106 INFO L231 Difference]: Finished difference. Result has 121 places, 102 transitions, 897 flow [2024-06-27 23:39:04,106 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=824, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=897, PETRI_PLACES=121, PETRI_TRANSITIONS=102} [2024-06-27 23:39:04,107 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 91 predicate places. [2024-06-27 23:39:04,107 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 102 transitions, 897 flow [2024-06-27 23:39:04,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:04,108 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:39:04,108 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:39:04,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 23:39:04,108 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:39:04,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:39:04,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1667960902, now seen corresponding path program 5 times [2024-06-27 23:39:04,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:39:04,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589356045] [2024-06-27 23:39:04,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:39:04,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:39:04,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:39:05,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:39:05,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:39:05,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589356045] [2024-06-27 23:39:05,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589356045] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:39:05,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:39:05,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:39:05,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891071697] [2024-06-27 23:39:05,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:39:05,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:39:05,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:39:05,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:39:05,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:39:05,241 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:39:05,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 102 transitions, 897 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:05,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:39:05,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:39:05,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:39:05,452 INFO L124 PetriNetUnfolderBase]: 304/537 cut-off events. [2024-06-27 23:39:05,452 INFO L125 PetriNetUnfolderBase]: For 18842/18842 co-relation queries the response was YES. [2024-06-27 23:39:05,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3576 conditions, 537 events. 304/537 cut-off events. For 18842/18842 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2051 event pairs, 58 based on Foata normal form. 1/536 useless extension candidates. Maximal degree in co-relation 3513. Up to 514 conditions per place. [2024-06-27 23:39:05,456 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 95 selfloop transitions, 14 changer transitions 0/111 dead transitions. [2024-06-27 23:39:05,456 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 111 transitions, 1163 flow [2024-06-27 23:39:05,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:39:05,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:39:05,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 88 transitions. [2024-06-27 23:39:05,457 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-27 23:39:05,457 INFO L175 Difference]: Start difference. First operand has 121 places, 102 transitions, 897 flow. Second operand 8 states and 88 transitions. [2024-06-27 23:39:05,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 111 transitions, 1163 flow [2024-06-27 23:39:05,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 111 transitions, 1088 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-27 23:39:05,478 INFO L231 Difference]: Finished difference. Result has 123 places, 104 transitions, 891 flow [2024-06-27 23:39:05,478 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=830, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=891, PETRI_PLACES=123, PETRI_TRANSITIONS=104} [2024-06-27 23:39:05,478 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 93 predicate places. [2024-06-27 23:39:05,479 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 104 transitions, 891 flow [2024-06-27 23:39:05,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:05,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:39:05,479 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:39:05,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 23:39:05,479 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:39:05,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:39:05,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1667759309, now seen corresponding path program 4 times [2024-06-27 23:39:05,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:39:05,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811792034] [2024-06-27 23:39:05,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:39:05,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:39:05,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:39:06,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:39:06,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:39:06,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811792034] [2024-06-27 23:39:06,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811792034] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:39:06,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:39:06,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:39:06,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077740763] [2024-06-27 23:39:06,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:39:06,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:39:06,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:39:06,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:39:06,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:39:06,535 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:39:06,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 104 transitions, 891 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:06,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:39:06,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:39:06,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:39:06,770 INFO L124 PetriNetUnfolderBase]: 298/528 cut-off events. [2024-06-27 23:39:06,771 INFO L125 PetriNetUnfolderBase]: For 19370/19370 co-relation queries the response was YES. [2024-06-27 23:39:06,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3438 conditions, 528 events. 298/528 cut-off events. For 19370/19370 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2021 event pairs, 56 based on Foata normal form. 3/529 useless extension candidates. Maximal degree in co-relation 3374. Up to 472 conditions per place. [2024-06-27 23:39:06,774 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 92 selfloop transitions, 21 changer transitions 0/115 dead transitions. [2024-06-27 23:39:06,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 115 transitions, 1145 flow [2024-06-27 23:39:06,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:39:06,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:39:06,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 96 transitions. [2024-06-27 23:39:06,777 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-27 23:39:06,777 INFO L175 Difference]: Start difference. First operand has 123 places, 104 transitions, 891 flow. Second operand 8 states and 96 transitions. [2024-06-27 23:39:06,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 115 transitions, 1145 flow [2024-06-27 23:39:06,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 115 transitions, 1098 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-27 23:39:06,800 INFO L231 Difference]: Finished difference. Result has 125 places, 104 transitions, 891 flow [2024-06-27 23:39:06,800 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=844, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=891, PETRI_PLACES=125, PETRI_TRANSITIONS=104} [2024-06-27 23:39:06,801 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 95 predicate places. [2024-06-27 23:39:06,802 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 104 transitions, 891 flow [2024-06-27 23:39:06,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:06,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:39:06,802 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:39:06,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 23:39:06,802 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:39:06,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:39:06,803 INFO L85 PathProgramCache]: Analyzing trace with hash 1667753357, now seen corresponding path program 4 times [2024-06-27 23:39:06,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:39:06,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743184675] [2024-06-27 23:39:06,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:39:06,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:39:06,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:39:08,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:39:08,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:39:08,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743184675] [2024-06-27 23:39:08,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743184675] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:39:08,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:39:08,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:39:08,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574951403] [2024-06-27 23:39:08,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:39:08,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:39:08,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:39:08,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:39:08,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:39:08,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:39:08,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 104 transitions, 891 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:08,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:39:08,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:39:08,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:39:08,393 INFO L124 PetriNetUnfolderBase]: 288/520 cut-off events. [2024-06-27 23:39:08,394 INFO L125 PetriNetUnfolderBase]: For 19744/19744 co-relation queries the response was YES. [2024-06-27 23:39:08,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3447 conditions, 520 events. 288/520 cut-off events. For 19744/19744 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2037 event pairs, 54 based on Foata normal form. 1/519 useless extension candidates. Maximal degree in co-relation 3382. Up to 462 conditions per place. [2024-06-27 23:39:08,397 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 85 selfloop transitions, 14 changer transitions 0/113 dead transitions. [2024-06-27 23:39:08,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 113 transitions, 1133 flow [2024-06-27 23:39:08,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:39:08,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:39:08,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-27 23:39:08,398 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3655913978494624 [2024-06-27 23:39:08,399 INFO L175 Difference]: Start difference. First operand has 125 places, 104 transitions, 891 flow. Second operand 9 states and 102 transitions. [2024-06-27 23:39:08,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 113 transitions, 1133 flow [2024-06-27 23:39:08,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 113 transitions, 1065 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-27 23:39:08,425 INFO L231 Difference]: Finished difference. Result has 127 places, 106 transitions, 888 flow [2024-06-27 23:39:08,425 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=823, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=888, PETRI_PLACES=127, PETRI_TRANSITIONS=106} [2024-06-27 23:39:08,425 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 97 predicate places. [2024-06-27 23:39:08,425 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 106 transitions, 888 flow [2024-06-27 23:39:08,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:08,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:39:08,426 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:39:08,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 23:39:08,426 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:39:08,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:39:08,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1667759092, now seen corresponding path program 6 times [2024-06-27 23:39:08,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:39:08,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074563563] [2024-06-27 23:39:08,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:39:08,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:39:08,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:39:09,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:39:09,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:39:09,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074563563] [2024-06-27 23:39:09,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074563563] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:39:09,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:39:09,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:39:09,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434239871] [2024-06-27 23:39:09,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:39:09,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:39:09,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:39:09,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:39:09,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:39:09,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:39:09,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 106 transitions, 888 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:09,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:39:09,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:39:09,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:39:09,648 INFO L124 PetriNetUnfolderBase]: 299/530 cut-off events. [2024-06-27 23:39:09,648 INFO L125 PetriNetUnfolderBase]: For 19992/19992 co-relation queries the response was YES. [2024-06-27 23:39:09,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3466 conditions, 530 events. 299/530 cut-off events. For 19992/19992 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2046 event pairs, 57 based on Foata normal form. 1/529 useless extension candidates. Maximal degree in co-relation 3400. Up to 492 conditions per place. [2024-06-27 23:39:09,651 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 90 selfloop transitions, 21 changer transitions 0/113 dead transitions. [2024-06-27 23:39:09,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 113 transitions, 1126 flow [2024-06-27 23:39:09,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:39:09,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:39:09,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 92 transitions. [2024-06-27 23:39:09,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-27 23:39:09,652 INFO L175 Difference]: Start difference. First operand has 127 places, 106 transitions, 888 flow. Second operand 8 states and 92 transitions. [2024-06-27 23:39:09,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 113 transitions, 1126 flow [2024-06-27 23:39:09,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 113 transitions, 1063 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-27 23:39:09,677 INFO L231 Difference]: Finished difference. Result has 128 places, 106 transitions, 872 flow [2024-06-27 23:39:09,677 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=825, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=872, PETRI_PLACES=128, PETRI_TRANSITIONS=106} [2024-06-27 23:39:09,678 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 98 predicate places. [2024-06-27 23:39:09,678 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 106 transitions, 872 flow [2024-06-27 23:39:09,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:09,678 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:39:09,678 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:39:09,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 23:39:09,678 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:39:09,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:39:09,679 INFO L85 PathProgramCache]: Analyzing trace with hash 1465030835, now seen corresponding path program 5 times [2024-06-27 23:39:09,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:39:09,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289945477] [2024-06-27 23:39:09,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:39:09,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:39:09,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:39:10,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:39:10,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:39:10,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289945477] [2024-06-27 23:39:10,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289945477] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:39:10,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:39:10,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:39:10,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509337663] [2024-06-27 23:39:10,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:39:10,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:39:10,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:39:10,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:39:10,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:39:10,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:39:10,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 106 transitions, 872 flow. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:10,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:39:10,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:39:10,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:39:11,029 INFO L124 PetriNetUnfolderBase]: 297/537 cut-off events. [2024-06-27 23:39:11,030 INFO L125 PetriNetUnfolderBase]: For 21987/21987 co-relation queries the response was YES. [2024-06-27 23:39:11,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3569 conditions, 537 events. 297/537 cut-off events. For 21987/21987 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2130 event pairs, 45 based on Foata normal form. 1/536 useless extension candidates. Maximal degree in co-relation 3502. Up to 420 conditions per place. [2024-06-27 23:39:11,034 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 79 selfloop transitions, 34 changer transitions 0/127 dead transitions. [2024-06-27 23:39:11,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 127 transitions, 1288 flow [2024-06-27 23:39:11,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:39:11,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:39:11,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-27 23:39:11,035 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4157706093189964 [2024-06-27 23:39:11,035 INFO L175 Difference]: Start difference. First operand has 128 places, 106 transitions, 872 flow. Second operand 9 states and 116 transitions. [2024-06-27 23:39:11,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 127 transitions, 1288 flow [2024-06-27 23:39:11,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 127 transitions, 1234 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-27 23:39:11,064 INFO L231 Difference]: Finished difference. Result has 131 places, 113 transitions, 998 flow [2024-06-27 23:39:11,064 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=818, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=998, PETRI_PLACES=131, PETRI_TRANSITIONS=113} [2024-06-27 23:39:11,064 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 101 predicate places. [2024-06-27 23:39:11,064 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 113 transitions, 998 flow [2024-06-27 23:39:11,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:11,065 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:39:11,065 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:39:11,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 23:39:11,065 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:39:11,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:39:11,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1111862079, now seen corresponding path program 6 times [2024-06-27 23:39:11,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:39:11,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18569454] [2024-06-27 23:39:11,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:39:11,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:39:11,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:39:12,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:39:12,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:39:12,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18569454] [2024-06-27 23:39:12,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18569454] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:39:12,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:39:12,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:39:12,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355126313] [2024-06-27 23:39:12,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:39:12,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:39:12,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:39:12,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:39:12,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:39:12,295 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:39:12,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 113 transitions, 998 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:12,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:39:12,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:39:12,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:39:12,511 INFO L124 PetriNetUnfolderBase]: 300/541 cut-off events. [2024-06-27 23:39:12,511 INFO L125 PetriNetUnfolderBase]: For 23512/23512 co-relation queries the response was YES. [2024-06-27 23:39:12,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3728 conditions, 541 events. 300/541 cut-off events. For 23512/23512 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2145 event pairs, 45 based on Foata normal form. 1/540 useless extension candidates. Maximal degree in co-relation 3659. Up to 424 conditions per place. [2024-06-27 23:39:12,514 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 77 selfloop transitions, 39 changer transitions 0/130 dead transitions. [2024-06-27 23:39:12,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 130 transitions, 1374 flow [2024-06-27 23:39:12,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:39:12,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:39:12,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 124 transitions. [2024-06-27 23:39:12,529 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-27 23:39:12,529 INFO L175 Difference]: Start difference. First operand has 131 places, 113 transitions, 998 flow. Second operand 9 states and 124 transitions. [2024-06-27 23:39:12,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 130 transitions, 1374 flow [2024-06-27 23:39:12,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 130 transitions, 1310 flow, removed 24 selfloop flow, removed 4 redundant places. [2024-06-27 23:39:12,561 INFO L231 Difference]: Finished difference. Result has 136 places, 115 transitions, 1061 flow [2024-06-27 23:39:12,562 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=938, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1061, PETRI_PLACES=136, PETRI_TRANSITIONS=115} [2024-06-27 23:39:12,562 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 106 predicate places. [2024-06-27 23:39:12,562 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 115 transitions, 1061 flow [2024-06-27 23:39:12,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:12,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:39:12,563 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:39:12,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 23:39:12,563 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:39:12,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:39:12,563 INFO L85 PathProgramCache]: Analyzing trace with hash -720317974, now seen corresponding path program 7 times [2024-06-27 23:39:12,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:39:12,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169156262] [2024-06-27 23:39:12,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:39:12,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:39:12,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:39:13,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:39:13,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:39:13,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169156262] [2024-06-27 23:39:13,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169156262] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:39:13,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:39:13,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:39:13,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584073206] [2024-06-27 23:39:13,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:39:13,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:39:13,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:39:13,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:39:13,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:39:13,864 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:39:13,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 115 transitions, 1061 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:13,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:39:13,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:39:13,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:39:14,227 INFO L124 PetriNetUnfolderBase]: 322/568 cut-off events. [2024-06-27 23:39:14,227 INFO L125 PetriNetUnfolderBase]: For 23866/23866 co-relation queries the response was YES. [2024-06-27 23:39:14,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3946 conditions, 568 events. 322/568 cut-off events. For 23866/23866 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2222 event pairs, 49 based on Foata normal form. 1/567 useless extension candidates. Maximal degree in co-relation 3876. Up to 511 conditions per place. [2024-06-27 23:39:14,231 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 105 selfloop transitions, 27 changer transitions 0/134 dead transitions. [2024-06-27 23:39:14,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 134 transitions, 1489 flow [2024-06-27 23:39:14,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:39:14,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:39:14,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-27 23:39:14,242 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-27 23:39:14,242 INFO L175 Difference]: Start difference. First operand has 136 places, 115 transitions, 1061 flow. Second operand 9 states and 108 transitions. [2024-06-27 23:39:14,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 134 transitions, 1489 flow [2024-06-27 23:39:14,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 134 transitions, 1402 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-27 23:39:14,280 INFO L231 Difference]: Finished difference. Result has 138 places, 119 transitions, 1095 flow [2024-06-27 23:39:14,280 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=976, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1095, PETRI_PLACES=138, PETRI_TRANSITIONS=119} [2024-06-27 23:39:14,281 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 108 predicate places. [2024-06-27 23:39:14,281 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 119 transitions, 1095 flow [2024-06-27 23:39:14,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:14,282 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:39:14,282 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:39:14,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 23:39:14,282 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:39:14,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:39:14,282 INFO L85 PathProgramCache]: Analyzing trace with hash -720322779, now seen corresponding path program 7 times [2024-06-27 23:39:14,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:39:14,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933349087] [2024-06-27 23:39:14,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:39:14,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:39:14,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:39:15,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:39:15,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:39:15,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933349087] [2024-06-27 23:39:15,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933349087] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:39:15,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:39:15,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:39:15,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681162240] [2024-06-27 23:39:15,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:39:15,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:39:15,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:39:15,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:39:15,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:39:15,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:39:15,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 119 transitions, 1095 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:15,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:39:15,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:39:15,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:39:15,926 INFO L124 PetriNetUnfolderBase]: 306/551 cut-off events. [2024-06-27 23:39:15,926 INFO L125 PetriNetUnfolderBase]: For 23529/23529 co-relation queries the response was YES. [2024-06-27 23:39:15,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3805 conditions, 551 events. 306/551 cut-off events. For 23529/23529 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2209 event pairs, 47 based on Foata normal form. 1/550 useless extension candidates. Maximal degree in co-relation 3736. Up to 458 conditions per place. [2024-06-27 23:39:15,931 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 87 selfloop transitions, 27 changer transitions 0/130 dead transitions. [2024-06-27 23:39:15,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 130 transitions, 1351 flow [2024-06-27 23:39:15,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:39:15,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:39:15,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 108 transitions. [2024-06-27 23:39:15,957 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43548387096774194 [2024-06-27 23:39:15,957 INFO L175 Difference]: Start difference. First operand has 138 places, 119 transitions, 1095 flow. Second operand 8 states and 108 transitions. [2024-06-27 23:39:15,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 130 transitions, 1351 flow [2024-06-27 23:39:15,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 130 transitions, 1281 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-06-27 23:39:15,996 INFO L231 Difference]: Finished difference. Result has 141 places, 119 transitions, 1088 flow [2024-06-27 23:39:15,996 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1025, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1088, PETRI_PLACES=141, PETRI_TRANSITIONS=119} [2024-06-27 23:39:15,997 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 111 predicate places. [2024-06-27 23:39:15,997 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 119 transitions, 1088 flow [2024-06-27 23:39:15,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:15,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:39:15,997 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:39:15,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 23:39:15,997 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:39:15,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:39:15,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1161233452, now seen corresponding path program 8 times [2024-06-27 23:39:15,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:39:15,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053624615] [2024-06-27 23:39:15,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:39:15,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:39:16,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:39:17,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:39:17,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:39:17,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053624615] [2024-06-27 23:39:17,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053624615] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:39:17,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:39:17,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:39:17,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791936126] [2024-06-27 23:39:17,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:39:17,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:39:17,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:39:17,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:39:17,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:39:17,582 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:39:17,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 119 transitions, 1088 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:17,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:39:17,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:39:17,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:39:17,883 INFO L124 PetriNetUnfolderBase]: 318/562 cut-off events. [2024-06-27 23:39:17,884 INFO L125 PetriNetUnfolderBase]: For 23781/23781 co-relation queries the response was YES. [2024-06-27 23:39:17,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3872 conditions, 562 events. 318/562 cut-off events. For 23781/23781 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2205 event pairs, 48 based on Foata normal form. 1/561 useless extension candidates. Maximal degree in co-relation 3800. Up to 518 conditions per place. [2024-06-27 23:39:17,888 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 109 selfloop transitions, 20 changer transitions 0/131 dead transitions. [2024-06-27 23:39:17,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 131 transitions, 1378 flow [2024-06-27 23:39:17,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:39:17,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:39:17,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 97 transitions. [2024-06-27 23:39:17,892 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3911290322580645 [2024-06-27 23:39:17,892 INFO L175 Difference]: Start difference. First operand has 141 places, 119 transitions, 1088 flow. Second operand 8 states and 97 transitions. [2024-06-27 23:39:17,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 131 transitions, 1378 flow [2024-06-27 23:39:17,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 131 transitions, 1301 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-27 23:39:17,933 INFO L231 Difference]: Finished difference. Result has 141 places, 119 transitions, 1056 flow [2024-06-27 23:39:17,933 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1011, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1056, PETRI_PLACES=141, PETRI_TRANSITIONS=119} [2024-06-27 23:39:17,935 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 111 predicate places. [2024-06-27 23:39:17,935 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 119 transitions, 1056 flow [2024-06-27 23:39:17,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:17,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:39:17,935 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:39:17,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 23:39:17,935 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:39:17,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:39:17,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1164958319, now seen corresponding path program 5 times [2024-06-27 23:39:17,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:39:17,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21840831] [2024-06-27 23:39:17,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:39:17,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:39:17,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:39:19,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:39:19,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:39:19,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21840831] [2024-06-27 23:39:19,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21840831] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:39:19,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:39:19,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:39:19,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593739336] [2024-06-27 23:39:19,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:39:19,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:39:19,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:39:19,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:39:19,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:39:19,583 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:39:19,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 119 transitions, 1056 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:19,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:39:19,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:39:19,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:39:19,987 INFO L124 PetriNetUnfolderBase]: 316/559 cut-off events. [2024-06-27 23:39:19,987 INFO L125 PetriNetUnfolderBase]: For 23124/23124 co-relation queries the response was YES. [2024-06-27 23:39:19,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3788 conditions, 559 events. 316/559 cut-off events. For 23124/23124 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2199 event pairs, 57 based on Foata normal form. 1/558 useless extension candidates. Maximal degree in co-relation 3717. Up to 492 conditions per place. [2024-06-27 23:39:20,021 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 106 selfloop transitions, 29 changer transitions 0/137 dead transitions. [2024-06-27 23:39:20,021 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 137 transitions, 1396 flow [2024-06-27 23:39:20,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:39:20,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:39:20,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-27 23:39:20,022 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37992831541218636 [2024-06-27 23:39:20,022 INFO L175 Difference]: Start difference. First operand has 141 places, 119 transitions, 1056 flow. Second operand 9 states and 106 transitions. [2024-06-27 23:39:20,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 137 transitions, 1396 flow [2024-06-27 23:39:20,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 137 transitions, 1337 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-27 23:39:20,075 INFO L231 Difference]: Finished difference. Result has 144 places, 126 transitions, 1132 flow [2024-06-27 23:39:20,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=997, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1132, PETRI_PLACES=144, PETRI_TRANSITIONS=126} [2024-06-27 23:39:20,075 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 114 predicate places. [2024-06-27 23:39:20,075 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 126 transitions, 1132 flow [2024-06-27 23:39:20,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:20,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:39:20,076 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:39:20,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 23:39:20,076 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:39:20,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:39:20,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1164958102, now seen corresponding path program 9 times [2024-06-27 23:39:20,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:39:20,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412574221] [2024-06-27 23:39:20,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:39:20,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:39:20,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:39:21,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:39:21,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:39:21,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412574221] [2024-06-27 23:39:21,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412574221] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:39:21,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:39:21,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:39:21,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203840485] [2024-06-27 23:39:21,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:39:21,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:39:21,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:39:21,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:39:21,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:39:21,706 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:39:21,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 126 transitions, 1132 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:21,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:39:21,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:39:21,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:39:22,139 INFO L124 PetriNetUnfolderBase]: 319/565 cut-off events. [2024-06-27 23:39:22,139 INFO L125 PetriNetUnfolderBase]: For 24533/24533 co-relation queries the response was YES. [2024-06-27 23:39:22,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3944 conditions, 565 events. 319/565 cut-off events. For 24533/24533 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2228 event pairs, 52 based on Foata normal form. 1/564 useless extension candidates. Maximal degree in co-relation 3870. Up to 450 conditions per place. [2024-06-27 23:39:22,144 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 90 selfloop transitions, 50 changer transitions 0/142 dead transitions. [2024-06-27 23:39:22,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 142 transitions, 1580 flow [2024-06-27 23:39:22,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:39:22,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:39:22,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 103 transitions. [2024-06-27 23:39:22,145 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4153225806451613 [2024-06-27 23:39:22,145 INFO L175 Difference]: Start difference. First operand has 144 places, 126 transitions, 1132 flow. Second operand 8 states and 103 transitions. [2024-06-27 23:39:22,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 142 transitions, 1580 flow [2024-06-27 23:39:22,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 142 transitions, 1546 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-27 23:39:22,184 INFO L231 Difference]: Finished difference. Result has 147 places, 130 transitions, 1271 flow [2024-06-27 23:39:22,185 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1098, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1271, PETRI_PLACES=147, PETRI_TRANSITIONS=130} [2024-06-27 23:39:22,185 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 117 predicate places. [2024-06-27 23:39:22,185 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 130 transitions, 1271 flow [2024-06-27 23:39:22,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:22,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:39:22,186 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:39:22,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 23:39:22,186 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:39:22,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:39:22,186 INFO L85 PathProgramCache]: Analyzing trace with hash 1164952522, now seen corresponding path program 10 times [2024-06-27 23:39:22,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:39:22,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517215023] [2024-06-27 23:39:22,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:39:22,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:39:22,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:39:23,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:39:23,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:39:23,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517215023] [2024-06-27 23:39:23,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517215023] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:39:23,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:39:23,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:39:23,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227958336] [2024-06-27 23:39:23,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:39:23,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:39:23,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:39:23,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:39:23,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:39:23,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:39:23,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 130 transitions, 1271 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:23,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:39:23,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:39:23,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:39:24,139 INFO L124 PetriNetUnfolderBase]: 317/562 cut-off events. [2024-06-27 23:39:24,140 INFO L125 PetriNetUnfolderBase]: For 25253/25253 co-relation queries the response was YES. [2024-06-27 23:39:24,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4021 conditions, 562 events. 317/562 cut-off events. For 25253/25253 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2211 event pairs, 52 based on Foata normal form. 1/561 useless extension candidates. Maximal degree in co-relation 3946. Up to 448 conditions per place. [2024-06-27 23:39:24,145 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 91 selfloop transitions, 48 changer transitions 0/141 dead transitions. [2024-06-27 23:39:24,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 141 transitions, 1577 flow [2024-06-27 23:39:24,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:39:24,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:39:24,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 103 transitions. [2024-06-27 23:39:24,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4153225806451613 [2024-06-27 23:39:24,147 INFO L175 Difference]: Start difference. First operand has 147 places, 130 transitions, 1271 flow. Second operand 8 states and 103 transitions. [2024-06-27 23:39:24,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 141 transitions, 1577 flow [2024-06-27 23:39:24,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 141 transitions, 1448 flow, removed 29 selfloop flow, removed 5 redundant places. [2024-06-27 23:39:24,196 INFO L231 Difference]: Finished difference. Result has 150 places, 130 transitions, 1243 flow [2024-06-27 23:39:24,196 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1142, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1243, PETRI_PLACES=150, PETRI_TRANSITIONS=130} [2024-06-27 23:39:24,199 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 120 predicate places. [2024-06-27 23:39:24,199 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 130 transitions, 1243 flow [2024-06-27 23:39:24,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:24,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:39:24,200 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:39:24,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 23:39:24,204 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:39:24,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:39:24,205 INFO L85 PathProgramCache]: Analyzing trace with hash 1164952367, now seen corresponding path program 8 times [2024-06-27 23:39:24,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:39:24,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497121671] [2024-06-27 23:39:24,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:39:24,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:39:24,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:39:25,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:39:25,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:39:25,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497121671] [2024-06-27 23:39:25,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497121671] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:39:25,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:39:25,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:39:25,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974949426] [2024-06-27 23:39:25,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:39:25,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:39:25,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:39:25,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:39:25,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:39:25,660 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:39:25,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 130 transitions, 1243 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:25,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:39:25,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:39:25,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:39:26,051 INFO L124 PetriNetUnfolderBase]: 302/545 cut-off events. [2024-06-27 23:39:26,051 INFO L125 PetriNetUnfolderBase]: For 25442/25442 co-relation queries the response was YES. [2024-06-27 23:39:26,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3863 conditions, 545 events. 302/545 cut-off events. For 25442/25442 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2185 event pairs, 49 based on Foata normal form. 1/544 useless extension candidates. Maximal degree in co-relation 3787. Up to 432 conditions per place. [2024-06-27 23:39:26,055 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 88 selfloop transitions, 35 changer transitions 0/141 dead transitions. [2024-06-27 23:39:26,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 141 transitions, 1543 flow [2024-06-27 23:39:26,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:39:26,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:39:26,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 94 transitions. [2024-06-27 23:39:26,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43317972350230416 [2024-06-27 23:39:26,057 INFO L175 Difference]: Start difference. First operand has 150 places, 130 transitions, 1243 flow. Second operand 7 states and 94 transitions. [2024-06-27 23:39:26,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 141 transitions, 1543 flow [2024-06-27 23:39:26,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 141 transitions, 1415 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-27 23:39:26,104 INFO L231 Difference]: Finished difference. Result has 149 places, 132 transitions, 1229 flow [2024-06-27 23:39:26,104 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1115, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1229, PETRI_PLACES=149, PETRI_TRANSITIONS=132} [2024-06-27 23:39:26,105 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 119 predicate places. [2024-06-27 23:39:26,105 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 132 transitions, 1229 flow [2024-06-27 23:39:26,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:26,106 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:39:26,106 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:39:26,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 23:39:26,106 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:39:26,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:39:26,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1617900191, now seen corresponding path program 1 times [2024-06-27 23:39:26,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:39:26,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347123450] [2024-06-27 23:39:26,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:39:26,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:39:26,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:39:27,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:39:27,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:39:27,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347123450] [2024-06-27 23:39:27,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347123450] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:39:27,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:39:27,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:39:27,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560000631] [2024-06-27 23:39:27,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:39:27,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:39:27,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:39:27,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:39:27,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:39:27,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:39:27,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 132 transitions, 1229 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:27,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:39:27,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:39:27,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:39:27,871 INFO L124 PetriNetUnfolderBase]: 318/578 cut-off events. [2024-06-27 23:39:27,871 INFO L125 PetriNetUnfolderBase]: For 29867/29867 co-relation queries the response was YES. [2024-06-27 23:39:27,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4106 conditions, 578 events. 318/578 cut-off events. For 29867/29867 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2448 event pairs, 60 based on Foata normal form. 2/575 useless extension candidates. Maximal degree in co-relation 4030. Up to 474 conditions per place. [2024-06-27 23:39:27,875 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 113 selfloop transitions, 20 changer transitions 0/151 dead transitions. [2024-06-27 23:39:27,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 151 transitions, 1669 flow [2024-06-27 23:39:27,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:39:27,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:39:27,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-27 23:39:27,877 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3935483870967742 [2024-06-27 23:39:27,877 INFO L175 Difference]: Start difference. First operand has 149 places, 132 transitions, 1229 flow. Second operand 10 states and 122 transitions. [2024-06-27 23:39:27,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 151 transitions, 1669 flow [2024-06-27 23:39:27,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 151 transitions, 1569 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-27 23:39:27,922 INFO L231 Difference]: Finished difference. Result has 155 places, 135 transitions, 1236 flow [2024-06-27 23:39:27,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1135, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1236, PETRI_PLACES=155, PETRI_TRANSITIONS=135} [2024-06-27 23:39:27,923 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 125 predicate places. [2024-06-27 23:39:27,923 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 135 transitions, 1236 flow [2024-06-27 23:39:27,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:27,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:39:27,923 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:39:27,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 23:39:27,923 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:39:27,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:39:27,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1617960765, now seen corresponding path program 1 times [2024-06-27 23:39:27,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:39:27,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448310562] [2024-06-27 23:39:27,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:39:27,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:39:27,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:39:29,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:39:29,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:39:29,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448310562] [2024-06-27 23:39:29,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448310562] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:39:29,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:39:29,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:39:29,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296943776] [2024-06-27 23:39:29,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:39:29,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:39:29,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:39:29,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:39:29,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:39:29,467 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:39:29,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 135 transitions, 1236 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:29,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:39:29,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:39:29,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:39:29,799 INFO L124 PetriNetUnfolderBase]: 339/606 cut-off events. [2024-06-27 23:39:29,799 INFO L125 PetriNetUnfolderBase]: For 29298/29298 co-relation queries the response was YES. [2024-06-27 23:39:29,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4252 conditions, 606 events. 339/606 cut-off events. For 29298/29298 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2523 event pairs, 66 based on Foata normal form. 1/605 useless extension candidates. Maximal degree in co-relation 4173. Up to 556 conditions per place. [2024-06-27 23:39:29,804 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 128 selfloop transitions, 22 changer transitions 0/152 dead transitions. [2024-06-27 23:39:29,804 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 152 transitions, 1694 flow [2024-06-27 23:39:29,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:39:29,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:39:29,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-27 23:39:29,805 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3489736070381232 [2024-06-27 23:39:29,805 INFO L175 Difference]: Start difference. First operand has 155 places, 135 transitions, 1236 flow. Second operand 11 states and 119 transitions. [2024-06-27 23:39:29,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 152 transitions, 1694 flow [2024-06-27 23:39:29,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 152 transitions, 1642 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-27 23:39:29,858 INFO L231 Difference]: Finished difference. Result has 160 places, 139 transitions, 1281 flow [2024-06-27 23:39:29,859 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1184, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1281, PETRI_PLACES=160, PETRI_TRANSITIONS=139} [2024-06-27 23:39:29,859 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 130 predicate places. [2024-06-27 23:39:29,859 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 139 transitions, 1281 flow [2024-06-27 23:39:29,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:29,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:39:29,859 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:39:29,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 23:39:29,860 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:39:29,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:39:29,860 INFO L85 PathProgramCache]: Analyzing trace with hash -924919801, now seen corresponding path program 2 times [2024-06-27 23:39:29,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:39:29,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096673578] [2024-06-27 23:39:29,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:39:29,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:39:29,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:39:31,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:39:31,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:39:31,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096673578] [2024-06-27 23:39:31,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096673578] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:39:31,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:39:31,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:39:31,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235734505] [2024-06-27 23:39:31,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:39:31,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:39:31,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:39:31,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:39:31,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:39:31,416 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:39:31,416 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 139 transitions, 1281 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:31,416 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:39:31,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:39:31,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:39:31,692 INFO L124 PetriNetUnfolderBase]: 332/603 cut-off events. [2024-06-27 23:39:31,692 INFO L125 PetriNetUnfolderBase]: For 32078/32078 co-relation queries the response was YES. [2024-06-27 23:39:31,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4268 conditions, 603 events. 332/603 cut-off events. For 32078/32078 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2562 event pairs, 63 based on Foata normal form. 2/603 useless extension candidates. Maximal degree in co-relation 4187. Up to 515 conditions per place. [2024-06-27 23:39:31,696 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 114 selfloop transitions, 19 changer transitions 0/153 dead transitions. [2024-06-27 23:39:31,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 153 transitions, 1598 flow [2024-06-27 23:39:31,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:39:31,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:39:31,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-27 23:39:31,697 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38387096774193546 [2024-06-27 23:39:31,698 INFO L175 Difference]: Start difference. First operand has 160 places, 139 transitions, 1281 flow. Second operand 10 states and 119 transitions. [2024-06-27 23:39:31,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 153 transitions, 1598 flow [2024-06-27 23:39:31,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 153 transitions, 1555 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-27 23:39:31,751 INFO L231 Difference]: Finished difference. Result has 163 places, 140 transitions, 1299 flow [2024-06-27 23:39:31,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1238, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1299, PETRI_PLACES=163, PETRI_TRANSITIONS=140} [2024-06-27 23:39:31,752 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 133 predicate places. [2024-06-27 23:39:31,752 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 140 transitions, 1299 flow [2024-06-27 23:39:31,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:31,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:39:31,752 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:39:31,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 23:39:31,752 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:39:31,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:39:31,753 INFO L85 PathProgramCache]: Analyzing trace with hash 886610177, now seen corresponding path program 3 times [2024-06-27 23:39:31,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:39:31,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096069323] [2024-06-27 23:39:31,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:39:31,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:39:31,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:39:33,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:39:33,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:39:33,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096069323] [2024-06-27 23:39:33,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096069323] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:39:33,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:39:33,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:39:33,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888108980] [2024-06-27 23:39:33,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:39:33,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:39:33,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:39:33,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:39:33,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:39:33,465 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:39:33,465 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 140 transitions, 1299 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:33,465 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:39:33,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:39:33,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:39:33,793 INFO L124 PetriNetUnfolderBase]: 329/598 cut-off events. [2024-06-27 23:39:33,793 INFO L125 PetriNetUnfolderBase]: For 31914/31914 co-relation queries the response was YES. [2024-06-27 23:39:33,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4206 conditions, 598 events. 329/598 cut-off events. For 31914/31914 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2527 event pairs, 62 based on Foata normal form. 2/598 useless extension candidates. Maximal degree in co-relation 4123. Up to 518 conditions per place. [2024-06-27 23:39:33,798 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 116 selfloop transitions, 15 changer transitions 0/151 dead transitions. [2024-06-27 23:39:33,798 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 151 transitions, 1589 flow [2024-06-27 23:39:33,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:39:33,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:39:33,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-27 23:39:33,799 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36774193548387096 [2024-06-27 23:39:33,799 INFO L175 Difference]: Start difference. First operand has 163 places, 140 transitions, 1299 flow. Second operand 10 states and 114 transitions. [2024-06-27 23:39:33,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 151 transitions, 1589 flow [2024-06-27 23:39:33,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 151 transitions, 1529 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-27 23:39:33,885 INFO L231 Difference]: Finished difference. Result has 165 places, 140 transitions, 1273 flow [2024-06-27 23:39:33,886 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1239, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1273, PETRI_PLACES=165, PETRI_TRANSITIONS=140} [2024-06-27 23:39:33,886 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 135 predicate places. [2024-06-27 23:39:33,886 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 140 transitions, 1273 flow [2024-06-27 23:39:33,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:33,886 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:39:33,887 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:39:33,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 23:39:33,887 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:39:33,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:39:33,888 INFO L85 PathProgramCache]: Analyzing trace with hash -922123167, now seen corresponding path program 2 times [2024-06-27 23:39:33,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:39:33,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373620711] [2024-06-27 23:39:33,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:39:33,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:39:33,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:39:35,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:39:35,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:39:35,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373620711] [2024-06-27 23:39:35,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373620711] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:39:35,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:39:35,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:39:35,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016070144] [2024-06-27 23:39:35,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:39:35,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:39:35,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:39:35,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:39:35,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:39:35,508 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:39:35,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 140 transitions, 1273 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:35,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:39:35,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:39:35,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:39:35,804 INFO L124 PetriNetUnfolderBase]: 343/614 cut-off events. [2024-06-27 23:39:35,804 INFO L125 PetriNetUnfolderBase]: For 31976/31976 co-relation queries the response was YES. [2024-06-27 23:39:35,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4282 conditions, 614 events. 343/614 cut-off events. For 31976/31976 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2572 event pairs, 65 based on Foata normal form. 1/613 useless extension candidates. Maximal degree in co-relation 4198. Up to 574 conditions per place. [2024-06-27 23:39:35,810 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 132 selfloop transitions, 19 changer transitions 0/153 dead transitions. [2024-06-27 23:39:35,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 153 transitions, 1711 flow [2024-06-27 23:39:35,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:39:35,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:39:35,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-27 23:39:35,812 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3655913978494624 [2024-06-27 23:39:35,812 INFO L175 Difference]: Start difference. First operand has 165 places, 140 transitions, 1273 flow. Second operand 9 states and 102 transitions. [2024-06-27 23:39:35,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 153 transitions, 1711 flow [2024-06-27 23:39:35,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 153 transitions, 1681 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-27 23:39:35,881 INFO L231 Difference]: Finished difference. Result has 166 places, 142 transitions, 1308 flow [2024-06-27 23:39:35,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1243, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1308, PETRI_PLACES=166, PETRI_TRANSITIONS=142} [2024-06-27 23:39:35,881 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 136 predicate places. [2024-06-27 23:39:35,882 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 142 transitions, 1308 flow [2024-06-27 23:39:35,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:35,882 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:39:35,882 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:39:35,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 23:39:35,882 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:39:35,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:39:35,883 INFO L85 PathProgramCache]: Analyzing trace with hash 1620761925, now seen corresponding path program 3 times [2024-06-27 23:39:35,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:39:35,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272495681] [2024-06-27 23:39:35,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:39:35,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:39:35,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:39:37,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:39:37,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:39:37,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272495681] [2024-06-27 23:39:37,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272495681] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:39:37,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:39:37,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:39:37,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558846058] [2024-06-27 23:39:37,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:39:37,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:39:37,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:39:37,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:39:37,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:39:37,488 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:39:37,489 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 142 transitions, 1308 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:37,489 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:39:37,489 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:39:37,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:39:37,866 INFO L124 PetriNetUnfolderBase]: 341/611 cut-off events. [2024-06-27 23:39:37,866 INFO L125 PetriNetUnfolderBase]: For 32450/32450 co-relation queries the response was YES. [2024-06-27 23:39:37,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4264 conditions, 611 events. 341/611 cut-off events. For 32450/32450 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2551 event pairs, 65 based on Foata normal form. 1/610 useless extension candidates. Maximal degree in co-relation 4179. Up to 578 conditions per place. [2024-06-27 23:39:37,871 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 134 selfloop transitions, 16 changer transitions 0/152 dead transitions. [2024-06-27 23:39:37,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 152 transitions, 1634 flow [2024-06-27 23:39:37,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:39:37,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:39:37,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-27 23:39:37,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-27 23:39:37,872 INFO L175 Difference]: Start difference. First operand has 166 places, 142 transitions, 1308 flow. Second operand 10 states and 105 transitions. [2024-06-27 23:39:37,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 152 transitions, 1634 flow [2024-06-27 23:39:37,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 152 transitions, 1569 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-27 23:39:37,944 INFO L231 Difference]: Finished difference. Result has 169 places, 142 transitions, 1280 flow [2024-06-27 23:39:37,944 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1243, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1280, PETRI_PLACES=169, PETRI_TRANSITIONS=142} [2024-06-27 23:39:37,945 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 139 predicate places. [2024-06-27 23:39:37,945 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 142 transitions, 1280 flow [2024-06-27 23:39:37,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:37,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:39:37,945 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:39:37,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-27 23:39:37,946 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:39:37,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:39:37,946 INFO L85 PathProgramCache]: Analyzing trace with hash 886615137, now seen corresponding path program 1 times [2024-06-27 23:39:37,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:39:37,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601532030] [2024-06-27 23:39:37,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:39:37,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:39:37,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:39:39,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:39:39,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:39:39,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601532030] [2024-06-27 23:39:39,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601532030] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:39:39,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:39:39,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:39:39,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706557581] [2024-06-27 23:39:39,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:39:39,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:39:39,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:39:39,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:39:39,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:39:39,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:39:39,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 142 transitions, 1280 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:39,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:39:39,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:39:39,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:39:39,581 INFO L124 PetriNetUnfolderBase]: 350/626 cut-off events. [2024-06-27 23:39:39,582 INFO L125 PetriNetUnfolderBase]: For 35999/35999 co-relation queries the response was YES. [2024-06-27 23:39:39,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4347 conditions, 626 events. 350/626 cut-off events. For 35999/35999 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2639 event pairs, 64 based on Foata normal form. 3/627 useless extension candidates. Maximal degree in co-relation 4261. Up to 587 conditions per place. [2024-06-27 23:39:39,588 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 138 selfloop transitions, 16 changer transitions 0/156 dead transitions. [2024-06-27 23:39:39,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 156 transitions, 1644 flow [2024-06-27 23:39:39,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:39:39,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:39:39,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-27 23:39:39,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36200716845878134 [2024-06-27 23:39:39,590 INFO L175 Difference]: Start difference. First operand has 169 places, 142 transitions, 1280 flow. Second operand 9 states and 101 transitions. [2024-06-27 23:39:39,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 156 transitions, 1644 flow [2024-06-27 23:39:39,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 156 transitions, 1607 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-27 23:39:39,664 INFO L231 Difference]: Finished difference. Result has 169 places, 144 transitions, 1306 flow [2024-06-27 23:39:39,664 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1243, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1306, PETRI_PLACES=169, PETRI_TRANSITIONS=144} [2024-06-27 23:39:39,664 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 139 predicate places. [2024-06-27 23:39:39,664 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 144 transitions, 1306 flow [2024-06-27 23:39:39,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:39,665 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:39:39,665 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:39:39,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-27 23:39:39,665 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:39:39,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:39:39,665 INFO L85 PathProgramCache]: Analyzing trace with hash 1736053281, now seen corresponding path program 2 times [2024-06-27 23:39:39,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:39:39,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976092775] [2024-06-27 23:39:39,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:39:39,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:39:39,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:39:40,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:39:40,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:39:40,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976092775] [2024-06-27 23:39:40,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976092775] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:39:40,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:39:40,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:39:40,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095414866] [2024-06-27 23:39:40,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:39:40,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:39:40,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:39:40,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:39:40,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:39:40,910 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:39:40,911 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 144 transitions, 1306 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:40,911 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:39:40,911 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:39:40,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:39:41,157 INFO L124 PetriNetUnfolderBase]: 363/647 cut-off events. [2024-06-27 23:39:41,157 INFO L125 PetriNetUnfolderBase]: For 37584/37584 co-relation queries the response was YES. [2024-06-27 23:39:41,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4631 conditions, 647 events. 363/647 cut-off events. For 37584/37584 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 2756 event pairs, 67 based on Foata normal form. 1/646 useless extension candidates. Maximal degree in co-relation 4544. Up to 534 conditions per place. [2024-06-27 23:39:41,162 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 126 selfloop transitions, 36 changer transitions 0/164 dead transitions. [2024-06-27 23:39:41,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 164 transitions, 1942 flow [2024-06-27 23:39:41,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:39:41,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:39:41,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-27 23:39:41,164 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4014336917562724 [2024-06-27 23:39:41,164 INFO L175 Difference]: Start difference. First operand has 169 places, 144 transitions, 1306 flow. Second operand 9 states and 112 transitions. [2024-06-27 23:39:41,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 164 transitions, 1942 flow [2024-06-27 23:39:41,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 164 transitions, 1880 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-27 23:39:41,245 INFO L231 Difference]: Finished difference. Result has 172 places, 153 transitions, 1439 flow [2024-06-27 23:39:41,245 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1259, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1439, PETRI_PLACES=172, PETRI_TRANSITIONS=153} [2024-06-27 23:39:41,245 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 142 predicate places. [2024-06-27 23:39:41,245 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 153 transitions, 1439 flow [2024-06-27 23:39:41,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:41,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:39:41,246 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:39:41,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-27 23:39:41,246 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:39:41,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:39:41,247 INFO L85 PathProgramCache]: Analyzing trace with hash 1736053095, now seen corresponding path program 4 times [2024-06-27 23:39:41,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:39:41,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228012428] [2024-06-27 23:39:41,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:39:41,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:39:41,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:39:42,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:39:42,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:39:42,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228012428] [2024-06-27 23:39:42,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228012428] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:39:42,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:39:42,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:39:42,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399850367] [2024-06-27 23:39:42,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:39:42,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:39:42,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:39:42,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:39:42,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:39:42,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:39:42,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 153 transitions, 1439 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:42,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:39:42,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:39:42,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:39:42,970 INFO L124 PetriNetUnfolderBase]: 366/652 cut-off events. [2024-06-27 23:39:42,970 INFO L125 PetriNetUnfolderBase]: For 39272/39272 co-relation queries the response was YES. [2024-06-27 23:39:42,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4748 conditions, 652 events. 366/652 cut-off events. For 39272/39272 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 2783 event pairs, 66 based on Foata normal form. 1/651 useless extension candidates. Maximal degree in co-relation 4659. Up to 577 conditions per place. [2024-06-27 23:39:42,977 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 128 selfloop transitions, 34 changer transitions 0/164 dead transitions. [2024-06-27 23:39:42,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 164 transitions, 1811 flow [2024-06-27 23:39:42,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:39:42,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:39:42,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-27 23:39:42,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36129032258064514 [2024-06-27 23:39:42,979 INFO L175 Difference]: Start difference. First operand has 172 places, 153 transitions, 1439 flow. Second operand 10 states and 112 transitions. [2024-06-27 23:39:42,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 164 transitions, 1811 flow [2024-06-27 23:39:43,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 164 transitions, 1767 flow, removed 15 selfloop flow, removed 3 redundant places. [2024-06-27 23:39:43,061 INFO L231 Difference]: Finished difference. Result has 179 places, 155 transitions, 1498 flow [2024-06-27 23:39:43,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1395, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1498, PETRI_PLACES=179, PETRI_TRANSITIONS=155} [2024-06-27 23:39:43,062 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 149 predicate places. [2024-06-27 23:39:43,062 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 155 transitions, 1498 flow [2024-06-27 23:39:43,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:43,062 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:39:43,062 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:39:43,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-27 23:39:43,063 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:39:43,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:39:43,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1736048445, now seen corresponding path program 5 times [2024-06-27 23:39:43,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:39:43,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151702594] [2024-06-27 23:39:43,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:39:43,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:39:43,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:39:44,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:39:44,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:39:44,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151702594] [2024-06-27 23:39:44,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151702594] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:39:44,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:39:44,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:39:44,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672368913] [2024-06-27 23:39:44,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:39:44,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:39:44,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:39:44,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:39:44,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:39:44,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:39:44,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 155 transitions, 1498 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:44,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:39:44,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:39:44,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:39:44,829 INFO L124 PetriNetUnfolderBase]: 374/665 cut-off events. [2024-06-27 23:39:44,830 INFO L125 PetriNetUnfolderBase]: For 42122/42122 co-relation queries the response was YES. [2024-06-27 23:39:44,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4981 conditions, 665 events. 374/665 cut-off events. For 42122/42122 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2851 event pairs, 66 based on Foata normal form. 1/664 useless extension candidates. Maximal degree in co-relation 4890. Up to 580 conditions per place. [2024-06-27 23:39:44,843 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 128 selfloop transitions, 39 changer transitions 0/169 dead transitions. [2024-06-27 23:39:44,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 169 transitions, 2012 flow [2024-06-27 23:39:44,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:39:44,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:39:44,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-27 23:39:44,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-27 23:39:44,854 INFO L175 Difference]: Start difference. First operand has 179 places, 155 transitions, 1498 flow. Second operand 9 states and 108 transitions. [2024-06-27 23:39:44,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 169 transitions, 2012 flow [2024-06-27 23:39:44,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 169 transitions, 1925 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-27 23:39:44,934 INFO L231 Difference]: Finished difference. Result has 180 places, 159 transitions, 1558 flow [2024-06-27 23:39:44,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1411, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1558, PETRI_PLACES=180, PETRI_TRANSITIONS=159} [2024-06-27 23:39:44,935 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 150 predicate places. [2024-06-27 23:39:44,935 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 159 transitions, 1558 flow [2024-06-27 23:39:44,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:44,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:39:44,936 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:39:44,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-27 23:39:44,936 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:39:44,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:39:44,936 INFO L85 PathProgramCache]: Analyzing trace with hash 68144081, now seen corresponding path program 4 times [2024-06-27 23:39:44,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:39:44,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998636374] [2024-06-27 23:39:44,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:39:44,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:39:44,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:39:46,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:39:46,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:39:46,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998636374] [2024-06-27 23:39:46,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998636374] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:39:46,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:39:46,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:39:46,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972683231] [2024-06-27 23:39:46,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:39:46,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:39:46,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:39:46,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:39:46,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:39:46,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:39:46,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 159 transitions, 1558 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:46,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:39:46,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:39:46,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:39:46,758 INFO L124 PetriNetUnfolderBase]: 364/659 cut-off events. [2024-06-27 23:39:46,759 INFO L125 PetriNetUnfolderBase]: For 45730/45730 co-relation queries the response was YES. [2024-06-27 23:39:46,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5019 conditions, 659 events. 364/659 cut-off events. For 45730/45730 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2902 event pairs, 61 based on Foata normal form. 2/659 useless extension candidates. Maximal degree in co-relation 4927. Up to 556 conditions per place. [2024-06-27 23:39:46,763 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 124 selfloop transitions, 22 changer transitions 0/170 dead transitions. [2024-06-27 23:39:46,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 170 transitions, 1898 flow [2024-06-27 23:39:46,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:39:46,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:39:46,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-27 23:39:46,765 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3774193548387097 [2024-06-27 23:39:46,765 INFO L175 Difference]: Start difference. First operand has 180 places, 159 transitions, 1558 flow. Second operand 10 states and 117 transitions. [2024-06-27 23:39:46,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 170 transitions, 1898 flow [2024-06-27 23:39:46,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 170 transitions, 1822 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-27 23:39:46,845 INFO L231 Difference]: Finished difference. Result has 185 places, 160 transitions, 1556 flow [2024-06-27 23:39:46,845 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1482, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1556, PETRI_PLACES=185, PETRI_TRANSITIONS=160} [2024-06-27 23:39:46,846 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 155 predicate places. [2024-06-27 23:39:46,846 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 160 transitions, 1556 flow [2024-06-27 23:39:46,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:46,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:39:46,846 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:39:46,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-27 23:39:46,846 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:39:46,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:39:46,847 INFO L85 PathProgramCache]: Analyzing trace with hash 68328531, now seen corresponding path program 3 times [2024-06-27 23:39:46,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:39:46,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876921980] [2024-06-27 23:39:46,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:39:46,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:39:46,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:39:47,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:39:47,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:39:47,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876921980] [2024-06-27 23:39:47,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876921980] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:39:47,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:39:47,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:39:47,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746197616] [2024-06-27 23:39:47,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:39:47,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:39:47,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:39:47,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:39:47,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:39:48,002 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:39:48,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 160 transitions, 1556 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:48,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:39:48,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:39:48,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:39:48,234 INFO L124 PetriNetUnfolderBase]: 381/678 cut-off events. [2024-06-27 23:39:48,234 INFO L125 PetriNetUnfolderBase]: For 45822/45822 co-relation queries the response was YES. [2024-06-27 23:39:48,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5159 conditions, 678 events. 381/678 cut-off events. For 45822/45822 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 2932 event pairs, 67 based on Foata normal form. 1/677 useless extension candidates. Maximal degree in co-relation 5065. Up to 564 conditions per place. [2024-06-27 23:39:48,239 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 130 selfloop transitions, 41 changer transitions 0/173 dead transitions. [2024-06-27 23:39:48,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 173 transitions, 2146 flow [2024-06-27 23:39:48,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:39:48,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:39:48,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-06-27 23:39:48,240 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3942652329749104 [2024-06-27 23:39:48,240 INFO L175 Difference]: Start difference. First operand has 185 places, 160 transitions, 1556 flow. Second operand 9 states and 110 transitions. [2024-06-27 23:39:48,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 173 transitions, 2146 flow [2024-06-27 23:39:48,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 173 transitions, 2082 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-27 23:39:48,326 INFO L231 Difference]: Finished difference. Result has 186 places, 162 transitions, 1601 flow [2024-06-27 23:39:48,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1492, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1601, PETRI_PLACES=186, PETRI_TRANSITIONS=162} [2024-06-27 23:39:48,326 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 156 predicate places. [2024-06-27 23:39:48,327 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 162 transitions, 1601 flow [2024-06-27 23:39:48,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:48,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:39:48,327 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:39:48,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-27 23:39:48,327 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:39:48,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:39:48,328 INFO L85 PathProgramCache]: Analyzing trace with hash -806654181, now seen corresponding path program 4 times [2024-06-27 23:39:48,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:39:48,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209478042] [2024-06-27 23:39:48,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:39:48,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:39:48,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:39:49,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:39:49,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:39:49,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209478042] [2024-06-27 23:39:49,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209478042] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:39:49,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:39:49,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:39:49,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117448614] [2024-06-27 23:39:49,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:39:49,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:39:49,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:39:49,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:39:49,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:39:49,619 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:39:49,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 162 transitions, 1601 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:49,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:39:49,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:39:49,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:39:49,842 INFO L124 PetriNetUnfolderBase]: 379/675 cut-off events. [2024-06-27 23:39:49,842 INFO L125 PetriNetUnfolderBase]: For 46024/46024 co-relation queries the response was YES. [2024-06-27 23:39:49,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5132 conditions, 675 events. 379/675 cut-off events. For 46024/46024 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 2909 event pairs, 69 based on Foata normal form. 1/674 useless extension candidates. Maximal degree in co-relation 5037. Up to 562 conditions per place. [2024-06-27 23:39:49,850 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 131 selfloop transitions, 39 changer transitions 0/172 dead transitions. [2024-06-27 23:39:49,850 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 172 transitions, 2067 flow [2024-06-27 23:39:49,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:39:49,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:39:49,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-06-27 23:39:49,851 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3942652329749104 [2024-06-27 23:39:49,851 INFO L175 Difference]: Start difference. First operand has 186 places, 162 transitions, 1601 flow. Second operand 9 states and 110 transitions. [2024-06-27 23:39:49,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 172 transitions, 2067 flow [2024-06-27 23:39:49,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 172 transitions, 1972 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-27 23:39:49,951 INFO L231 Difference]: Finished difference. Result has 189 places, 162 transitions, 1589 flow [2024-06-27 23:39:49,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1506, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1589, PETRI_PLACES=189, PETRI_TRANSITIONS=162} [2024-06-27 23:39:49,952 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 159 predicate places. [2024-06-27 23:39:49,952 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 162 transitions, 1589 flow [2024-06-27 23:39:49,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:49,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:39:49,952 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:39:49,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-27 23:39:49,953 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:39:49,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:39:49,953 INFO L85 PathProgramCache]: Analyzing trace with hash 891256581, now seen corresponding path program 6 times [2024-06-27 23:39:49,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:39:49,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233322191] [2024-06-27 23:39:49,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:39:49,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:39:49,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:39:51,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:39:51,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:39:51,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233322191] [2024-06-27 23:39:51,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233322191] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:39:51,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:39:51,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:39:51,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76893082] [2024-06-27 23:39:51,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:39:51,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:39:51,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:39:51,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:39:51,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:39:51,453 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:39:51,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 162 transitions, 1589 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:51,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:39:51,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:39:51,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:39:51,737 INFO L124 PetriNetUnfolderBase]: 377/672 cut-off events. [2024-06-27 23:39:51,737 INFO L125 PetriNetUnfolderBase]: For 46426/46426 co-relation queries the response was YES. [2024-06-27 23:39:51,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5080 conditions, 672 events. 377/672 cut-off events. For 46426/46426 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 2904 event pairs, 66 based on Foata normal form. 1/671 useless extension candidates. Maximal degree in co-relation 4984. Up to 597 conditions per place. [2024-06-27 23:39:51,743 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 134 selfloop transitions, 35 changer transitions 0/171 dead transitions. [2024-06-27 23:39:51,743 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 171 transitions, 1949 flow [2024-06-27 23:39:51,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:39:51,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:39:51,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-27 23:39:51,744 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3580645161290323 [2024-06-27 23:39:51,745 INFO L175 Difference]: Start difference. First operand has 189 places, 162 transitions, 1589 flow. Second operand 10 states and 111 transitions. [2024-06-27 23:39:51,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 171 transitions, 1949 flow [2024-06-27 23:39:51,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 171 transitions, 1866 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-27 23:39:51,845 INFO L231 Difference]: Finished difference. Result has 192 places, 162 transitions, 1581 flow [2024-06-27 23:39:51,845 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1506, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1581, PETRI_PLACES=192, PETRI_TRANSITIONS=162} [2024-06-27 23:39:51,846 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 162 predicate places. [2024-06-27 23:39:51,846 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 162 transitions, 1581 flow [2024-06-27 23:39:51,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:51,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:39:51,846 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:39:51,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-27 23:39:51,846 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:39:51,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:39:51,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1548858833, now seen corresponding path program 5 times [2024-06-27 23:39:51,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:39:51,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826087963] [2024-06-27 23:39:51,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:39:51,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:39:51,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:39:52,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:39:52,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:39:52,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826087963] [2024-06-27 23:39:52,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826087963] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:39:52,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:39:52,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:39:52,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126879345] [2024-06-27 23:39:52,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:39:52,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:39:52,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:39:52,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:39:52,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:39:52,991 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:39:52,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 162 transitions, 1581 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:52,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:39:52,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:39:52,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:39:53,203 INFO L124 PetriNetUnfolderBase]: 385/684 cut-off events. [2024-06-27 23:39:53,203 INFO L125 PetriNetUnfolderBase]: For 49568/49568 co-relation queries the response was YES. [2024-06-27 23:39:53,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5228 conditions, 684 events. 385/684 cut-off events. For 49568/49568 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 2971 event pairs, 64 based on Foata normal form. 1/683 useless extension candidates. Maximal degree in co-relation 5131. Up to 615 conditions per place. [2024-06-27 23:39:53,208 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 147 selfloop transitions, 28 changer transitions 0/177 dead transitions. [2024-06-27 23:39:53,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 177 transitions, 2224 flow [2024-06-27 23:39:53,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:39:53,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:39:53,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-27 23:39:53,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37992831541218636 [2024-06-27 23:39:53,210 INFO L175 Difference]: Start difference. First operand has 192 places, 162 transitions, 1581 flow. Second operand 9 states and 106 transitions. [2024-06-27 23:39:53,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 177 transitions, 2224 flow [2024-06-27 23:39:53,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 177 transitions, 2142 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-27 23:39:53,304 INFO L231 Difference]: Finished difference. Result has 192 places, 167 transitions, 1619 flow [2024-06-27 23:39:53,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1499, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1619, PETRI_PLACES=192, PETRI_TRANSITIONS=167} [2024-06-27 23:39:53,304 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 162 predicate places. [2024-06-27 23:39:53,304 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 167 transitions, 1619 flow [2024-06-27 23:39:53,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:53,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:39:53,305 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:39:53,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-27 23:39:53,305 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:39:53,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:39:53,305 INFO L85 PathProgramCache]: Analyzing trace with hash -641015233, now seen corresponding path program 7 times [2024-06-27 23:39:53,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:39:53,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597962028] [2024-06-27 23:39:53,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:39:53,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:39:53,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:39:54,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:39:54,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:39:54,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597962028] [2024-06-27 23:39:54,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597962028] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:39:54,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:39:54,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:39:54,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977120114] [2024-06-27 23:39:54,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:39:54,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:39:54,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:39:54,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:39:54,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:39:54,836 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:39:54,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 167 transitions, 1619 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:54,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:39:54,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:39:54,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:39:55,132 INFO L124 PetriNetUnfolderBase]: 388/689 cut-off events. [2024-06-27 23:39:55,132 INFO L125 PetriNetUnfolderBase]: For 51451/51451 co-relation queries the response was YES. [2024-06-27 23:39:55,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5287 conditions, 689 events. 388/689 cut-off events. For 51451/51451 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 2990 event pairs, 64 based on Foata normal form. 1/688 useless extension candidates. Maximal degree in co-relation 5189. Up to 646 conditions per place. [2024-06-27 23:39:55,142 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 152 selfloop transitions, 23 changer transitions 0/177 dead transitions. [2024-06-27 23:39:55,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 177 transitions, 2021 flow [2024-06-27 23:39:55,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:39:55,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:39:55,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-27 23:39:55,143 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34516129032258064 [2024-06-27 23:39:55,143 INFO L175 Difference]: Start difference. First operand has 192 places, 167 transitions, 1619 flow. Second operand 10 states and 107 transitions. [2024-06-27 23:39:55,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 177 transitions, 2021 flow [2024-06-27 23:39:55,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 177 transitions, 1940 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-27 23:39:55,263 INFO L231 Difference]: Finished difference. Result has 196 places, 169 transitions, 1627 flow [2024-06-27 23:39:55,272 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1538, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1627, PETRI_PLACES=196, PETRI_TRANSITIONS=169} [2024-06-27 23:39:55,273 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 166 predicate places. [2024-06-27 23:39:55,273 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 169 transitions, 1627 flow [2024-06-27 23:39:55,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:55,273 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:39:55,274 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:39:55,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-27 23:39:55,274 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:39:55,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:39:55,274 INFO L85 PathProgramCache]: Analyzing trace with hash 518651591, now seen corresponding path program 1 times [2024-06-27 23:39:55,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:39:55,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295374123] [2024-06-27 23:39:55,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:39:55,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:39:55,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:39:56,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:39:56,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:39:56,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295374123] [2024-06-27 23:39:56,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295374123] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:39:56,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:39:56,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:39:56,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908819819] [2024-06-27 23:39:56,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:39:56,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:39:56,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:39:56,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:39:56,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:39:56,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:39:56,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 169 transitions, 1627 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:56,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:39:56,546 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:39:56,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:39:56,941 INFO L124 PetriNetUnfolderBase]: 394/699 cut-off events. [2024-06-27 23:39:56,941 INFO L125 PetriNetUnfolderBase]: For 54802/54802 co-relation queries the response was YES. [2024-06-27 23:39:56,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5365 conditions, 699 events. 394/699 cut-off events. For 54802/54802 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3043 event pairs, 62 based on Foata normal form. 2/699 useless extension candidates. Maximal degree in co-relation 5266. Up to 665 conditions per place. [2024-06-27 23:39:56,946 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 162 selfloop transitions, 17 changer transitions 0/181 dead transitions. [2024-06-27 23:39:56,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 181 transitions, 2031 flow [2024-06-27 23:39:56,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:39:56,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:39:56,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-27 23:39:56,947 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-27 23:39:56,947 INFO L175 Difference]: Start difference. First operand has 196 places, 169 transitions, 1627 flow. Second operand 10 states and 105 transitions. [2024-06-27 23:39:56,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 181 transitions, 2031 flow [2024-06-27 23:39:57,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 181 transitions, 1958 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-27 23:39:57,051 INFO L231 Difference]: Finished difference. Result has 198 places, 172 transitions, 1626 flow [2024-06-27 23:39:57,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1554, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1626, PETRI_PLACES=198, PETRI_TRANSITIONS=172} [2024-06-27 23:39:57,051 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 168 predicate places. [2024-06-27 23:39:57,052 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 172 transitions, 1626 flow [2024-06-27 23:39:57,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:57,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:39:57,052 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:39:57,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-27 23:39:57,052 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:39:57,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:39:57,053 INFO L85 PathProgramCache]: Analyzing trace with hash 160747201, now seen corresponding path program 5 times [2024-06-27 23:39:57,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:39:57,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646525627] [2024-06-27 23:39:57,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:39:57,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:39:57,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:39:58,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:39:58,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:39:58,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646525627] [2024-06-27 23:39:58,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646525627] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:39:58,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:39:58,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:39:58,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964248463] [2024-06-27 23:39:58,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:39:58,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:39:58,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:39:58,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:39:58,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:39:58,404 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:39:58,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 172 transitions, 1626 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:58,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:39:58,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:39:58,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:39:58,650 INFO L124 PetriNetUnfolderBase]: 382/691 cut-off events. [2024-06-27 23:39:58,650 INFO L125 PetriNetUnfolderBase]: For 57211/57211 co-relation queries the response was YES. [2024-06-27 23:39:58,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5404 conditions, 691 events. 382/691 cut-off events. For 57211/57211 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3077 event pairs, 62 based on Foata normal form. 2/691 useless extension candidates. Maximal degree in co-relation 5304. Up to 607 conditions per place. [2024-06-27 23:39:58,656 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 142 selfloop transitions, 15 changer transitions 0/182 dead transitions. [2024-06-27 23:39:58,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 182 transitions, 1986 flow [2024-06-27 23:39:58,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:39:58,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:39:58,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-27 23:39:58,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3763440860215054 [2024-06-27 23:39:58,657 INFO L175 Difference]: Start difference. First operand has 198 places, 172 transitions, 1626 flow. Second operand 9 states and 105 transitions. [2024-06-27 23:39:58,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 182 transitions, 1986 flow [2024-06-27 23:39:58,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 182 transitions, 1927 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-27 23:39:58,770 INFO L231 Difference]: Finished difference. Result has 199 places, 173 transitions, 1629 flow [2024-06-27 23:39:58,770 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1567, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1629, PETRI_PLACES=199, PETRI_TRANSITIONS=173} [2024-06-27 23:39:58,771 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 169 predicate places. [2024-06-27 23:39:58,771 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 173 transitions, 1629 flow [2024-06-27 23:39:58,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:58,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:39:58,771 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:39:58,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-27 23:39:58,771 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:39:58,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:39:58,772 INFO L85 PathProgramCache]: Analyzing trace with hash 388826291, now seen corresponding path program 6 times [2024-06-27 23:39:58,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:39:58,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362255061] [2024-06-27 23:39:58,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:39:58,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:39:58,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:39:59,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:39:59,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:39:59,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362255061] [2024-06-27 23:39:59,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362255061] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:39:59,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:39:59,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:39:59,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478941736] [2024-06-27 23:39:59,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:39:59,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:39:59,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:39:59,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:39:59,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:39:59,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:39:59,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 173 transitions, 1629 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:59,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:39:59,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:39:59,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:40:00,055 INFO L124 PetriNetUnfolderBase]: 401/712 cut-off events. [2024-06-27 23:40:00,055 INFO L125 PetriNetUnfolderBase]: For 57030/57030 co-relation queries the response was YES. [2024-06-27 23:40:00,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5514 conditions, 712 events. 401/712 cut-off events. For 57030/57030 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3118 event pairs, 66 based on Foata normal form. 1/711 useless extension candidates. Maximal degree in co-relation 5414. Up to 669 conditions per place. [2024-06-27 23:40:00,061 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 161 selfloop transitions, 21 changer transitions 0/184 dead transitions. [2024-06-27 23:40:00,061 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 184 transitions, 2151 flow [2024-06-27 23:40:00,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:40:00,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:40:00,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-27 23:40:00,063 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36200716845878134 [2024-06-27 23:40:00,063 INFO L175 Difference]: Start difference. First operand has 199 places, 173 transitions, 1629 flow. Second operand 9 states and 101 transitions. [2024-06-27 23:40:00,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 184 transitions, 2151 flow [2024-06-27 23:40:00,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 184 transitions, 2089 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-27 23:40:00,184 INFO L231 Difference]: Finished difference. Result has 200 places, 175 transitions, 1638 flow [2024-06-27 23:40:00,184 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1567, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1638, PETRI_PLACES=200, PETRI_TRANSITIONS=175} [2024-06-27 23:40:00,184 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 170 predicate places. [2024-06-27 23:40:00,184 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 175 transitions, 1638 flow [2024-06-27 23:40:00,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:00,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:40:00,185 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:40:00,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-27 23:40:00,185 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:40:00,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:40:00,185 INFO L85 PathProgramCache]: Analyzing trace with hash 518642973, now seen corresponding path program 7 times [2024-06-27 23:40:00,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:40:00,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591453192] [2024-06-27 23:40:00,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:40:00,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:40:00,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:40:01,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:40:01,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:40:01,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591453192] [2024-06-27 23:40:01,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591453192] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:40:01,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:40:01,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:40:01,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98264613] [2024-06-27 23:40:01,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:40:01,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:40:01,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:40:01,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:40:01,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:40:01,177 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:40:01,177 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 175 transitions, 1638 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:01,177 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:40:01,177 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:40:01,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:40:01,451 INFO L124 PetriNetUnfolderBase]: 404/717 cut-off events. [2024-06-27 23:40:01,452 INFO L125 PetriNetUnfolderBase]: For 58732/58732 co-relation queries the response was YES. [2024-06-27 23:40:01,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5529 conditions, 717 events. 404/717 cut-off events. For 58732/58732 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3158 event pairs, 66 based on Foata normal form. 1/716 useless extension candidates. Maximal degree in co-relation 5430. Up to 689 conditions per place. [2024-06-27 23:40:01,457 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 168 selfloop transitions, 16 changer transitions 0/186 dead transitions. [2024-06-27 23:40:01,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 186 transitions, 2061 flow [2024-06-27 23:40:01,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:40:01,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:40:01,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-27 23:40:01,466 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34767025089605735 [2024-06-27 23:40:01,466 INFO L175 Difference]: Start difference. First operand has 200 places, 175 transitions, 1638 flow. Second operand 9 states and 97 transitions. [2024-06-27 23:40:01,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 186 transitions, 2061 flow [2024-06-27 23:40:01,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 186 transitions, 1993 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-27 23:40:01,597 INFO L231 Difference]: Finished difference. Result has 204 places, 178 transitions, 1653 flow [2024-06-27 23:40:01,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1580, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1653, PETRI_PLACES=204, PETRI_TRANSITIONS=178} [2024-06-27 23:40:01,598 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 174 predicate places. [2024-06-27 23:40:01,598 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 178 transitions, 1653 flow [2024-06-27 23:40:01,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:01,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:40:01,598 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:40:01,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-27 23:40:01,599 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:40:01,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:40:01,599 INFO L85 PathProgramCache]: Analyzing trace with hash 160747325, now seen corresponding path program 8 times [2024-06-27 23:40:01,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:40:01,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107285794] [2024-06-27 23:40:01,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:40:01,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:40:01,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:40:02,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:40:02,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:40:02,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107285794] [2024-06-27 23:40:02,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107285794] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:40:02,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:40:02,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:40:02,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789336124] [2024-06-27 23:40:02,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:40:02,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:40:02,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:40:02,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:40:02,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:40:03,030 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:40:03,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 178 transitions, 1653 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:03,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:40:03,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:40:03,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:40:03,335 INFO L124 PetriNetUnfolderBase]: 412/730 cut-off events. [2024-06-27 23:40:03,335 INFO L125 PetriNetUnfolderBase]: For 62476/62476 co-relation queries the response was YES. [2024-06-27 23:40:03,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5712 conditions, 730 events. 412/730 cut-off events. For 62476/62476 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3219 event pairs, 67 based on Foata normal form. 1/729 useless extension candidates. Maximal degree in co-relation 5611. Up to 675 conditions per place. [2024-06-27 23:40:03,342 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 160 selfloop transitions, 29 changer transitions 0/191 dead transitions. [2024-06-27 23:40:03,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 191 transitions, 2245 flow [2024-06-27 23:40:03,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:40:03,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:40:03,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-27 23:40:03,344 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34838709677419355 [2024-06-27 23:40:03,344 INFO L175 Difference]: Start difference. First operand has 204 places, 178 transitions, 1653 flow. Second operand 10 states and 108 transitions. [2024-06-27 23:40:03,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 191 transitions, 2245 flow [2024-06-27 23:40:03,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 191 transitions, 2207 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-27 23:40:03,469 INFO L231 Difference]: Finished difference. Result has 208 places, 182 transitions, 1758 flow [2024-06-27 23:40:03,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1615, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1758, PETRI_PLACES=208, PETRI_TRANSITIONS=182} [2024-06-27 23:40:03,469 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 178 predicate places. [2024-06-27 23:40:03,469 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 182 transitions, 1758 flow [2024-06-27 23:40:03,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:03,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:40:03,470 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:40:03,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-27 23:40:03,470 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:40:03,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:40:03,470 INFO L85 PathProgramCache]: Analyzing trace with hash 510368763, now seen corresponding path program 8 times [2024-06-27 23:40:03,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:40:03,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203236406] [2024-06-27 23:40:03,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:40:03,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:40:03,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:40:04,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:40:04,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:40:04,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203236406] [2024-06-27 23:40:04,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203236406] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:40:04,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:40:04,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:40:04,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394915876] [2024-06-27 23:40:04,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:40:04,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:40:04,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:40:04,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:40:04,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:40:04,609 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:40:04,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 182 transitions, 1758 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:04,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:40:04,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:40:04,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:40:04,865 INFO L124 PetriNetUnfolderBase]: 410/727 cut-off events. [2024-06-27 23:40:04,866 INFO L125 PetriNetUnfolderBase]: For 62967/62967 co-relation queries the response was YES. [2024-06-27 23:40:04,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5722 conditions, 727 events. 410/727 cut-off events. For 62967/62967 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3208 event pairs, 67 based on Foata normal form. 1/726 useless extension candidates. Maximal degree in co-relation 5620. Up to 684 conditions per place. [2024-06-27 23:40:04,872 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 165 selfloop transitions, 23 changer transitions 0/190 dead transitions. [2024-06-27 23:40:04,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 190 transitions, 2152 flow [2024-06-27 23:40:04,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:40:04,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:40:04,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-27 23:40:04,873 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36200716845878134 [2024-06-27 23:40:04,873 INFO L175 Difference]: Start difference. First operand has 208 places, 182 transitions, 1758 flow. Second operand 9 states and 101 transitions. [2024-06-27 23:40:04,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 190 transitions, 2152 flow [2024-06-27 23:40:05,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 190 transitions, 2065 flow, removed 29 selfloop flow, removed 6 redundant places. [2024-06-27 23:40:05,011 INFO L231 Difference]: Finished difference. Result has 211 places, 182 transitions, 1722 flow [2024-06-27 23:40:05,011 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1671, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1722, PETRI_PLACES=211, PETRI_TRANSITIONS=182} [2024-06-27 23:40:05,012 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 181 predicate places. [2024-06-27 23:40:05,012 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 182 transitions, 1722 flow [2024-06-27 23:40:05,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:05,012 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:40:05,012 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:40:05,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-27 23:40:05,012 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:40:05,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:40:05,013 INFO L85 PathProgramCache]: Analyzing trace with hash 160751975, now seen corresponding path program 9 times [2024-06-27 23:40:05,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:40:05,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289317639] [2024-06-27 23:40:05,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:40:05,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:40:05,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:40:06,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:40:06,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:40:06,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289317639] [2024-06-27 23:40:06,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289317639] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:40:06,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:40:06,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:40:06,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533474777] [2024-06-27 23:40:06,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:40:06,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:40:06,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:40:06,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:40:06,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:40:06,466 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:40:06,466 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 182 transitions, 1722 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:06,466 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:40:06,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:40:06,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:40:06,762 INFO L124 PetriNetUnfolderBase]: 413/732 cut-off events. [2024-06-27 23:40:06,763 INFO L125 PetriNetUnfolderBase]: For 64814/64814 co-relation queries the response was YES. [2024-06-27 23:40:06,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5759 conditions, 732 events. 413/732 cut-off events. For 64814/64814 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3235 event pairs, 67 based on Foata normal form. 1/731 useless extension candidates. Maximal degree in co-relation 5655. Up to 689 conditions per place. [2024-06-27 23:40:06,769 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 166 selfloop transitions, 24 changer transitions 0/192 dead transitions. [2024-06-27 23:40:06,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 192 transitions, 2148 flow [2024-06-27 23:40:06,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:40:06,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:40:06,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-27 23:40:06,770 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3419354838709677 [2024-06-27 23:40:06,770 INFO L175 Difference]: Start difference. First operand has 211 places, 182 transitions, 1722 flow. Second operand 10 states and 106 transitions. [2024-06-27 23:40:06,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 192 transitions, 2148 flow [2024-06-27 23:40:06,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 192 transitions, 2091 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-27 23:40:06,914 INFO L231 Difference]: Finished difference. Result has 213 places, 184 transitions, 1750 flow [2024-06-27 23:40:06,914 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1665, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1750, PETRI_PLACES=213, PETRI_TRANSITIONS=184} [2024-06-27 23:40:06,915 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 183 predicate places. [2024-06-27 23:40:06,915 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 184 transitions, 1750 flow [2024-06-27 23:40:06,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:06,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:40:06,915 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:40:06,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-27 23:40:06,915 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:40:06,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:40:06,916 INFO L85 PathProgramCache]: Analyzing trace with hash 388826105, now seen corresponding path program 10 times [2024-06-27 23:40:06,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:40:06,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064901588] [2024-06-27 23:40:06,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:40:06,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:40:06,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:40:08,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:40:08,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:40:08,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064901588] [2024-06-27 23:40:08,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064901588] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:40:08,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:40:08,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:40:08,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808807160] [2024-06-27 23:40:08,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:40:08,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:40:08,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:40:08,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:40:08,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:40:08,194 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:40:08,194 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 184 transitions, 1750 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:08,194 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:40:08,194 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:40:08,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:40:08,505 INFO L124 PetriNetUnfolderBase]: 411/729 cut-off events. [2024-06-27 23:40:08,506 INFO L125 PetriNetUnfolderBase]: For 65001/65001 co-relation queries the response was YES. [2024-06-27 23:40:08,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5710 conditions, 729 events. 411/729 cut-off events. For 65001/65001 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3217 event pairs, 67 based on Foata normal form. 1/728 useless extension candidates. Maximal degree in co-relation 5606. Up to 701 conditions per place. [2024-06-27 23:40:08,512 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 174 selfloop transitions, 16 changer transitions 0/192 dead transitions. [2024-06-27 23:40:08,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 192 transitions, 2148 flow [2024-06-27 23:40:08,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:40:08,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:40:08,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 103 transitions. [2024-06-27 23:40:08,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33225806451612905 [2024-06-27 23:40:08,514 INFO L175 Difference]: Start difference. First operand has 213 places, 184 transitions, 1750 flow. Second operand 10 states and 103 transitions. [2024-06-27 23:40:08,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 192 transitions, 2148 flow [2024-06-27 23:40:08,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 192 transitions, 2069 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-27 23:40:08,655 INFO L231 Difference]: Finished difference. Result has 215 places, 184 transitions, 1708 flow [2024-06-27 23:40:08,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1671, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1708, PETRI_PLACES=215, PETRI_TRANSITIONS=184} [2024-06-27 23:40:08,656 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 185 predicate places. [2024-06-27 23:40:08,656 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 184 transitions, 1708 flow [2024-06-27 23:40:08,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:08,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:40:08,656 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:40:08,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-27 23:40:08,656 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:40:08,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:40:08,657 INFO L85 PathProgramCache]: Analyzing trace with hash 160752161, now seen corresponding path program 9 times [2024-06-27 23:40:08,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:40:08,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958696074] [2024-06-27 23:40:08,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:40:08,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:40:08,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:40:09,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:40:09,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:40:09,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958696074] [2024-06-27 23:40:09,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958696074] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:40:09,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:40:09,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:40:09,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576307360] [2024-06-27 23:40:09,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:40:09,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:40:09,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:40:09,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:40:09,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:40:09,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:40:09,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 184 transitions, 1708 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:09,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:40:09,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:40:09,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:40:09,971 INFO L124 PetriNetUnfolderBase]: 414/734 cut-off events. [2024-06-27 23:40:09,971 INFO L125 PetriNetUnfolderBase]: For 66875/66875 co-relation queries the response was YES. [2024-06-27 23:40:09,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5725 conditions, 734 events. 414/734 cut-off events. For 66875/66875 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3247 event pairs, 67 based on Foata normal form. 1/733 useless extension candidates. Maximal degree in co-relation 5620. Up to 663 conditions per place. [2024-06-27 23:40:09,978 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 156 selfloop transitions, 37 changer transitions 0/195 dead transitions. [2024-06-27 23:40:09,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 195 transitions, 2260 flow [2024-06-27 23:40:09,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:40:09,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:40:09,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-27 23:40:09,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3727598566308244 [2024-06-27 23:40:09,979 INFO L175 Difference]: Start difference. First operand has 215 places, 184 transitions, 1708 flow. Second operand 9 states and 104 transitions. [2024-06-27 23:40:09,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 195 transitions, 2260 flow [2024-06-27 23:40:10,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 195 transitions, 2209 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-27 23:40:10,161 INFO L231 Difference]: Finished difference. Result has 215 places, 186 transitions, 1756 flow [2024-06-27 23:40:10,162 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1657, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1756, PETRI_PLACES=215, PETRI_TRANSITIONS=186} [2024-06-27 23:40:10,162 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 185 predicate places. [2024-06-27 23:40:10,162 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 186 transitions, 1756 flow [2024-06-27 23:40:10,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:10,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:40:10,162 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:40:10,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-27 23:40:10,163 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:40:10,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:40:10,163 INFO L85 PathProgramCache]: Analyzing trace with hash 160925141, now seen corresponding path program 10 times [2024-06-27 23:40:10,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:40:10,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885755865] [2024-06-27 23:40:10,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:40:10,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:40:10,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:40:11,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:40:11,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:40:11,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885755865] [2024-06-27 23:40:11,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885755865] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:40:11,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:40:11,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:40:11,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315999429] [2024-06-27 23:40:11,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:40:11,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:40:11,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:40:11,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:40:11,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:40:11,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:40:11,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 186 transitions, 1756 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:11,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:40:11,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:40:11,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:40:11,659 INFO L124 PetriNetUnfolderBase]: 412/731 cut-off events. [2024-06-27 23:40:11,659 INFO L125 PetriNetUnfolderBase]: For 66970/66970 co-relation queries the response was YES. [2024-06-27 23:40:11,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5710 conditions, 731 events. 412/731 cut-off events. For 66970/66970 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3232 event pairs, 67 based on Foata normal form. 1/730 useless extension candidates. Maximal degree in co-relation 5604. Up to 661 conditions per place. [2024-06-27 23:40:11,665 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 158 selfloop transitions, 34 changer transitions 0/194 dead transitions. [2024-06-27 23:40:11,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 194 transitions, 2158 flow [2024-06-27 23:40:11,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:40:11,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:40:11,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-27 23:40:11,666 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3763440860215054 [2024-06-27 23:40:11,666 INFO L175 Difference]: Start difference. First operand has 215 places, 186 transitions, 1756 flow. Second operand 9 states and 105 transitions. [2024-06-27 23:40:11,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 194 transitions, 2158 flow [2024-06-27 23:40:11,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 194 transitions, 2095 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-27 23:40:11,823 INFO L231 Difference]: Finished difference. Result has 219 places, 186 transitions, 1766 flow [2024-06-27 23:40:11,824 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1693, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1766, PETRI_PLACES=219, PETRI_TRANSITIONS=186} [2024-06-27 23:40:11,824 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 189 predicate places. [2024-06-27 23:40:11,824 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 186 transitions, 1766 flow [2024-06-27 23:40:11,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:11,824 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:40:11,825 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:40:11,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-27 23:40:11,825 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:40:11,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:40:11,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1244197759, now seen corresponding path program 6 times [2024-06-27 23:40:11,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:40:11,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178672672] [2024-06-27 23:40:11,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:40:11,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:40:11,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:40:12,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:40:12,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:40:12,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178672672] [2024-06-27 23:40:12,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178672672] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:40:12,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:40:12,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:40:12,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435463977] [2024-06-27 23:40:12,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:40:12,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:40:12,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:40:12,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:40:12,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:40:12,967 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-27 23:40:12,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 186 transitions, 1766 flow. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:12,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:40:12,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-27 23:40:12,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:40:13,312 INFO L124 PetriNetUnfolderBase]: 378/713 cut-off events. [2024-06-27 23:40:13,312 INFO L125 PetriNetUnfolderBase]: For 80091/80095 co-relation queries the response was YES. [2024-06-27 23:40:13,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5763 conditions, 713 events. 378/713 cut-off events. For 80091/80095 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 3427 event pairs, 21 based on Foata normal form. 3/712 useless extension candidates. Maximal degree in co-relation 5656. Up to 437 conditions per place. [2024-06-27 23:40:13,319 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 110 selfloop transitions, 37 changer transitions 0/205 dead transitions. [2024-06-27 23:40:13,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 205 transitions, 2290 flow [2024-06-27 23:40:13,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:40:13,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:40:13,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 128 transitions. [2024-06-27 23:40:13,320 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45878136200716846 [2024-06-27 23:40:13,320 INFO L175 Difference]: Start difference. First operand has 219 places, 186 transitions, 1766 flow. Second operand 9 states and 128 transitions. [2024-06-27 23:40:13,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 205 transitions, 2290 flow [2024-06-27 23:40:13,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 205 transitions, 2213 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-27 23:40:13,455 INFO L231 Difference]: Finished difference. Result has 221 places, 189 transitions, 1836 flow [2024-06-27 23:40:13,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1689, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1836, PETRI_PLACES=221, PETRI_TRANSITIONS=189} [2024-06-27 23:40:13,455 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 191 predicate places. [2024-06-27 23:40:13,456 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 189 transitions, 1836 flow [2024-06-27 23:40:13,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:13,456 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:40:13,456 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:40:13,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-27 23:40:13,456 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:40:13,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:40:13,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1638499485, now seen corresponding path program 11 times [2024-06-27 23:40:13,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:40:13,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902401284] [2024-06-27 23:40:13,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:40:13,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:40:13,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:40:15,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:40:15,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:40:15,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902401284] [2024-06-27 23:40:15,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902401284] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:40:15,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:40:15,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:40:15,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585927839] [2024-06-27 23:40:15,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:40:15,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:40:15,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:40:15,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:40:15,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:40:15,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:40:15,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 189 transitions, 1836 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:15,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:40:15,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:40:15,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:40:15,705 INFO L124 PetriNetUnfolderBase]: 431/768 cut-off events. [2024-06-27 23:40:15,705 INFO L125 PetriNetUnfolderBase]: For 76310/76310 co-relation queries the response was YES. [2024-06-27 23:40:15,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6174 conditions, 768 events. 431/768 cut-off events. For 76310/76310 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 3497 event pairs, 51 based on Foata normal form. 1/767 useless extension candidates. Maximal degree in co-relation 6066. Up to 719 conditions per place. [2024-06-27 23:40:15,711 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 179 selfloop transitions, 23 changer transitions 0/204 dead transitions. [2024-06-27 23:40:15,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 204 transitions, 2300 flow [2024-06-27 23:40:15,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:40:15,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:40:15,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-27 23:40:15,712 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36129032258064514 [2024-06-27 23:40:15,712 INFO L175 Difference]: Start difference. First operand has 221 places, 189 transitions, 1836 flow. Second operand 10 states and 112 transitions. [2024-06-27 23:40:15,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 204 transitions, 2300 flow [2024-06-27 23:40:15,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 204 transitions, 2234 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-27 23:40:15,939 INFO L231 Difference]: Finished difference. Result has 225 places, 191 transitions, 1851 flow [2024-06-27 23:40:15,939 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1770, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1851, PETRI_PLACES=225, PETRI_TRANSITIONS=191} [2024-06-27 23:40:15,939 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 195 predicate places. [2024-06-27 23:40:15,939 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 191 transitions, 1851 flow [2024-06-27 23:40:15,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:15,940 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:40:15,940 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:40:15,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-27 23:40:15,940 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:40:15,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:40:15,942 INFO L85 PathProgramCache]: Analyzing trace with hash -1828683561, now seen corresponding path program 11 times [2024-06-27 23:40:15,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:40:15,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009170541] [2024-06-27 23:40:15,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:40:15,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:40:15,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:40:17,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:40:17,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:40:17,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009170541] [2024-06-27 23:40:17,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009170541] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:40:17,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:40:17,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:40:17,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022297141] [2024-06-27 23:40:17,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:40:17,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:40:17,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:40:17,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:40:17,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:40:17,286 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:40:17,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 191 transitions, 1851 flow. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:17,286 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:40:17,286 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:40:17,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:40:17,719 INFO L124 PetriNetUnfolderBase]: 439/782 cut-off events. [2024-06-27 23:40:17,719 INFO L125 PetriNetUnfolderBase]: For 78304/78304 co-relation queries the response was YES. [2024-06-27 23:40:17,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6343 conditions, 782 events. 439/782 cut-off events. For 78304/78304 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 3576 event pairs, 52 based on Foata normal form. 1/781 useless extension candidates. Maximal degree in co-relation 6236. Up to 665 conditions per place. [2024-06-27 23:40:17,725 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 164 selfloop transitions, 44 changer transitions 0/210 dead transitions. [2024-06-27 23:40:17,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 210 transitions, 2521 flow [2024-06-27 23:40:17,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:40:17,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:40:17,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-27 23:40:17,726 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38387096774193546 [2024-06-27 23:40:17,727 INFO L175 Difference]: Start difference. First operand has 225 places, 191 transitions, 1851 flow. Second operand 10 states and 119 transitions. [2024-06-27 23:40:17,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 210 transitions, 2521 flow [2024-06-27 23:40:17,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 210 transitions, 2456 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-27 23:40:17,904 INFO L231 Difference]: Finished difference. Result has 227 places, 195 transitions, 1970 flow [2024-06-27 23:40:17,905 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1786, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1970, PETRI_PLACES=227, PETRI_TRANSITIONS=195} [2024-06-27 23:40:17,905 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 197 predicate places. [2024-06-27 23:40:17,905 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 195 transitions, 1970 flow [2024-06-27 23:40:17,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:17,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:40:17,905 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:40:17,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-27 23:40:17,906 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:40:17,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:40:17,906 INFO L85 PathProgramCache]: Analyzing trace with hash -83915135, now seen corresponding path program 7 times [2024-06-27 23:40:17,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:40:17,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621442131] [2024-06-27 23:40:17,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:40:17,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:40:17,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:40:19,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:40:19,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:40:19,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621442131] [2024-06-27 23:40:19,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621442131] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:40:19,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:40:19,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:40:19,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260883198] [2024-06-27 23:40:19,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:40:19,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:40:19,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:40:19,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:40:19,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:40:19,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:40:19,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 195 transitions, 1970 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:19,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:40:19,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:40:19,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:40:19,777 INFO L124 PetriNetUnfolderBase]: 428/778 cut-off events. [2024-06-27 23:40:19,778 INFO L125 PetriNetUnfolderBase]: For 87053/87054 co-relation queries the response was YES. [2024-06-27 23:40:19,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6494 conditions, 778 events. 428/778 cut-off events. For 87053/87054 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 3665 event pairs, 24 based on Foata normal form. 2/776 useless extension candidates. Maximal degree in co-relation 6386. Up to 541 conditions per place. [2024-06-27 23:40:19,784 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 139 selfloop transitions, 46 changer transitions 0/215 dead transitions. [2024-06-27 23:40:19,784 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 215 transitions, 2555 flow [2024-06-27 23:40:19,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:40:19,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:40:19,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 135 transitions. [2024-06-27 23:40:19,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43548387096774194 [2024-06-27 23:40:19,786 INFO L175 Difference]: Start difference. First operand has 227 places, 195 transitions, 1970 flow. Second operand 10 states and 135 transitions. [2024-06-27 23:40:19,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 215 transitions, 2555 flow [2024-06-27 23:40:19,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 215 transitions, 2465 flow, removed 25 selfloop flow, removed 7 redundant places. [2024-06-27 23:40:19,927 INFO L231 Difference]: Finished difference. Result has 230 places, 197 transitions, 2019 flow [2024-06-27 23:40:19,928 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1882, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2019, PETRI_PLACES=230, PETRI_TRANSITIONS=197} [2024-06-27 23:40:19,928 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 200 predicate places. [2024-06-27 23:40:19,928 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 197 transitions, 2019 flow [2024-06-27 23:40:19,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:19,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:40:19,928 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:40:19,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-27 23:40:19,929 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:40:19,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:40:19,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1753963635, now seen corresponding path program 12 times [2024-06-27 23:40:19,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:40:19,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050590331] [2024-06-27 23:40:19,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:40:19,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:40:19,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:40:21,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:40:21,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:40:21,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050590331] [2024-06-27 23:40:21,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050590331] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:40:21,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:40:21,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:40:21,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273712850] [2024-06-27 23:40:21,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:40:21,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:40:21,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:40:21,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:40:21,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:40:21,689 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:40:21,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 197 transitions, 2019 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:21,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:40:21,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:40:21,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:40:22,172 INFO L124 PetriNetUnfolderBase]: 455/811 cut-off events. [2024-06-27 23:40:22,173 INFO L125 PetriNetUnfolderBase]: For 83334/83334 co-relation queries the response was YES. [2024-06-27 23:40:22,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6735 conditions, 811 events. 455/811 cut-off events. For 83334/83334 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 3738 event pairs, 58 based on Foata normal form. 1/810 useless extension candidates. Maximal degree in co-relation 6626. Up to 631 conditions per place. [2024-06-27 23:40:22,179 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 142 selfloop transitions, 73 changer transitions 0/217 dead transitions. [2024-06-27 23:40:22,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 217 transitions, 2841 flow [2024-06-27 23:40:22,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:40:22,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:40:22,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-27 23:40:22,181 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3967741935483871 [2024-06-27 23:40:22,181 INFO L175 Difference]: Start difference. First operand has 230 places, 197 transitions, 2019 flow. Second operand 10 states and 123 transitions. [2024-06-27 23:40:22,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 217 transitions, 2841 flow [2024-06-27 23:40:22,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 217 transitions, 2726 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-27 23:40:22,424 INFO L231 Difference]: Finished difference. Result has 232 places, 203 transitions, 2153 flow [2024-06-27 23:40:22,425 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1908, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2153, PETRI_PLACES=232, PETRI_TRANSITIONS=203} [2024-06-27 23:40:22,425 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 202 predicate places. [2024-06-27 23:40:22,425 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 203 transitions, 2153 flow [2024-06-27 23:40:22,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:22,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:40:22,426 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:40:22,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-27 23:40:22,426 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:40:22,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:40:22,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1688990119, now seen corresponding path program 12 times [2024-06-27 23:40:22,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:40:22,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015419350] [2024-06-27 23:40:22,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:40:22,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:40:22,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:40:23,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:40:23,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:40:23,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015419350] [2024-06-27 23:40:23,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015419350] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:40:23,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:40:23,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:40:23,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72203492] [2024-06-27 23:40:23,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:40:23,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:40:23,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:40:23,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:40:23,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:40:23,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:40:23,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 203 transitions, 2153 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:23,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:40:23,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:40:23,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:40:23,981 INFO L124 PetriNetUnfolderBase]: 458/815 cut-off events. [2024-06-27 23:40:23,981 INFO L125 PetriNetUnfolderBase]: For 83337/83337 co-relation queries the response was YES. [2024-06-27 23:40:23,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6783 conditions, 815 events. 458/815 cut-off events. For 83337/83337 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 3766 event pairs, 54 based on Foata normal form. 1/814 useless extension candidates. Maximal degree in co-relation 6674. Up to 698 conditions per place. [2024-06-27 23:40:23,989 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 168 selfloop transitions, 51 changer transitions 0/221 dead transitions. [2024-06-27 23:40:23,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 221 transitions, 2805 flow [2024-06-27 23:40:23,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:40:23,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:40:23,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 121 transitions. [2024-06-27 23:40:23,990 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4336917562724014 [2024-06-27 23:40:23,990 INFO L175 Difference]: Start difference. First operand has 232 places, 203 transitions, 2153 flow. Second operand 9 states and 121 transitions. [2024-06-27 23:40:23,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 221 transitions, 2805 flow [2024-06-27 23:40:24,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 221 transitions, 2650 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-06-27 23:40:24,213 INFO L231 Difference]: Finished difference. Result has 235 places, 205 transitions, 2151 flow [2024-06-27 23:40:24,214 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1998, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2151, PETRI_PLACES=235, PETRI_TRANSITIONS=205} [2024-06-27 23:40:24,214 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 205 predicate places. [2024-06-27 23:40:24,214 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 205 transitions, 2151 flow [2024-06-27 23:40:24,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:24,214 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:40:24,214 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:40:24,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-27 23:40:24,215 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:40:24,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:40:24,215 INFO L85 PathProgramCache]: Analyzing trace with hash -941835683, now seen corresponding path program 8 times [2024-06-27 23:40:24,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:40:24,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564013450] [2024-06-27 23:40:24,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:40:24,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:40:24,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:40:25,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:40:25,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:40:25,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564013450] [2024-06-27 23:40:25,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564013450] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:40:25,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:40:25,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:40:25,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747383355] [2024-06-27 23:40:25,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:40:25,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:40:25,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:40:25,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:40:25,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:40:25,631 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:40:25,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 205 transitions, 2151 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:25,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:40:25,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:40:25,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:40:25,914 INFO L124 PetriNetUnfolderBase]: 462/823 cut-off events. [2024-06-27 23:40:25,915 INFO L125 PetriNetUnfolderBase]: For 87855/87855 co-relation queries the response was YES. [2024-06-27 23:40:25,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6824 conditions, 823 events. 462/823 cut-off events. For 87855/87855 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 3836 event pairs, 55 based on Foata normal form. 2/823 useless extension candidates. Maximal degree in co-relation 6715. Up to 720 conditions per place. [2024-06-27 23:40:25,922 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 179 selfloop transitions, 41 changer transitions 0/222 dead transitions. [2024-06-27 23:40:25,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 222 transitions, 2654 flow [2024-06-27 23:40:25,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:40:25,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:40:25,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-27 23:40:25,924 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4229390681003584 [2024-06-27 23:40:25,924 INFO L175 Difference]: Start difference. First operand has 235 places, 205 transitions, 2151 flow. Second operand 9 states and 118 transitions. [2024-06-27 23:40:25,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 222 transitions, 2654 flow [2024-06-27 23:40:26,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 222 transitions, 2544 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-27 23:40:26,118 INFO L231 Difference]: Finished difference. Result has 237 places, 206 transitions, 2156 flow [2024-06-27 23:40:26,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2041, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2156, PETRI_PLACES=237, PETRI_TRANSITIONS=206} [2024-06-27 23:40:26,119 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 207 predicate places. [2024-06-27 23:40:26,119 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 206 transitions, 2156 flow [2024-06-27 23:40:26,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:26,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:40:26,120 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:40:26,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-27 23:40:26,120 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:40:26,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:40:26,120 INFO L85 PathProgramCache]: Analyzing trace with hash -855020059, now seen corresponding path program 13 times [2024-06-27 23:40:26,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:40:26,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466226788] [2024-06-27 23:40:26,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:40:26,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:40:26,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:40:27,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:40:27,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:40:27,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466226788] [2024-06-27 23:40:27,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466226788] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:40:27,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:40:27,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:40:27,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789874152] [2024-06-27 23:40:27,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:40:27,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:40:27,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:40:27,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:40:27,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:40:27,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:40:27,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 206 transitions, 2156 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:27,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:40:27,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:40:27,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:40:27,598 INFO L124 PetriNetUnfolderBase]: 465/828 cut-off events. [2024-06-27 23:40:27,599 INFO L125 PetriNetUnfolderBase]: For 85679/85679 co-relation queries the response was YES. [2024-06-27 23:40:27,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6852 conditions, 828 events. 465/828 cut-off events. For 85679/85679 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 3861 event pairs, 64 based on Foata normal form. 1/827 useless extension candidates. Maximal degree in co-relation 6743. Up to 762 conditions per place. [2024-06-27 23:40:27,606 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 185 selfloop transitions, 33 changer transitions 0/220 dead transitions. [2024-06-27 23:40:27,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 220 transitions, 2658 flow [2024-06-27 23:40:27,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:40:27,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:40:27,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2024-06-27 23:40:27,607 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3978494623655914 [2024-06-27 23:40:27,607 INFO L175 Difference]: Start difference. First operand has 237 places, 206 transitions, 2156 flow. Second operand 9 states and 111 transitions. [2024-06-27 23:40:27,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 220 transitions, 2658 flow [2024-06-27 23:40:27,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 220 transitions, 2562 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-27 23:40:27,801 INFO L231 Difference]: Finished difference. Result has 238 places, 208 transitions, 2175 flow [2024-06-27 23:40:27,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2060, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2175, PETRI_PLACES=238, PETRI_TRANSITIONS=208} [2024-06-27 23:40:27,802 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 208 predicate places. [2024-06-27 23:40:27,802 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 208 transitions, 2175 flow [2024-06-27 23:40:27,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:27,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:40:27,802 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:40:27,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-27 23:40:27,802 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:40:27,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:40:27,803 INFO L85 PathProgramCache]: Analyzing trace with hash -855168983, now seen corresponding path program 9 times [2024-06-27 23:40:27,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:40:27,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968644456] [2024-06-27 23:40:27,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:40:27,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:40:27,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:40:29,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:40:29,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:40:29,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968644456] [2024-06-27 23:40:29,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968644456] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:40:29,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:40:29,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:40:29,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174799813] [2024-06-27 23:40:29,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:40:29,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:40:29,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:40:29,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:40:29,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:40:29,297 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:40:29,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 208 transitions, 2175 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:29,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:40:29,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:40:29,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:40:29,621 INFO L124 PetriNetUnfolderBase]: 443/804 cut-off events. [2024-06-27 23:40:29,621 INFO L125 PetriNetUnfolderBase]: For 86891/86892 co-relation queries the response was YES. [2024-06-27 23:40:29,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6603 conditions, 804 events. 443/804 cut-off events. For 86891/86892 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 3833 event pairs, 58 based on Foata normal form. 2/802 useless extension candidates. Maximal degree in co-relation 6493. Up to 669 conditions per place. [2024-06-27 23:40:29,628 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 161 selfloop transitions, 28 changer transitions 0/221 dead transitions. [2024-06-27 23:40:29,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 221 transitions, 2585 flow [2024-06-27 23:40:29,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:40:29,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:40:29,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 111 transitions. [2024-06-27 23:40:29,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4475806451612903 [2024-06-27 23:40:29,629 INFO L175 Difference]: Start difference. First operand has 238 places, 208 transitions, 2175 flow. Second operand 8 states and 111 transitions. [2024-06-27 23:40:29,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 221 transitions, 2585 flow [2024-06-27 23:40:29,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 221 transitions, 2483 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-27 23:40:29,778 INFO L231 Difference]: Finished difference. Result has 238 places, 208 transitions, 2135 flow [2024-06-27 23:40:29,778 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2073, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2135, PETRI_PLACES=238, PETRI_TRANSITIONS=208} [2024-06-27 23:40:29,779 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 208 predicate places. [2024-06-27 23:40:29,779 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 208 transitions, 2135 flow [2024-06-27 23:40:29,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:29,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:40:29,779 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:40:29,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-27 23:40:29,779 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:40:29,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:40:29,780 INFO L85 PathProgramCache]: Analyzing trace with hash -571373275, now seen corresponding path program 13 times [2024-06-27 23:40:29,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:40:29,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123153678] [2024-06-27 23:40:29,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:40:29,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:40:29,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:40:31,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:40:31,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:40:31,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123153678] [2024-06-27 23:40:31,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123153678] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:40:31,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:40:31,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:40:31,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527410076] [2024-06-27 23:40:31,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:40:31,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:40:31,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:40:31,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:40:31,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:40:31,648 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:40:31,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 208 transitions, 2135 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:31,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:40:31,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:40:31,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:40:32,152 INFO L124 PetriNetUnfolderBase]: 465/829 cut-off events. [2024-06-27 23:40:32,153 INFO L125 PetriNetUnfolderBase]: For 80518/80518 co-relation queries the response was YES. [2024-06-27 23:40:32,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6624 conditions, 829 events. 465/829 cut-off events. For 80518/80518 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 3875 event pairs, 57 based on Foata normal form. 1/828 useless extension candidates. Maximal degree in co-relation 6515. Up to 648 conditions per place. [2024-06-27 23:40:32,160 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 149 selfloop transitions, 73 changer transitions 0/224 dead transitions. [2024-06-27 23:40:32,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 224 transitions, 2911 flow [2024-06-27 23:40:32,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:40:32,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:40:32,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-27 23:40:32,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-27 23:40:32,161 INFO L175 Difference]: Start difference. First operand has 238 places, 208 transitions, 2135 flow. Second operand 10 states and 124 transitions. [2024-06-27 23:40:32,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 224 transitions, 2911 flow [2024-06-27 23:40:32,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 224 transitions, 2833 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-27 23:40:32,338 INFO L231 Difference]: Finished difference. Result has 240 places, 210 transitions, 2238 flow [2024-06-27 23:40:32,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2061, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2238, PETRI_PLACES=240, PETRI_TRANSITIONS=210} [2024-06-27 23:40:32,339 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 210 predicate places. [2024-06-27 23:40:32,339 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 210 transitions, 2238 flow [2024-06-27 23:40:32,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:32,339 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:40:32,339 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:40:32,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-27 23:40:32,340 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:40:32,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:40:32,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1686188773, now seen corresponding path program 14 times [2024-06-27 23:40:32,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:40:32,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200010410] [2024-06-27 23:40:32,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:40:32,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:40:32,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:40:33,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:40:33,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:40:33,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200010410] [2024-06-27 23:40:33,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200010410] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:40:33,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:40:33,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:40:33,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186210047] [2024-06-27 23:40:33,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:40:33,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:40:33,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:40:33,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:40:33,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:40:33,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:40:33,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 210 transitions, 2238 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:33,989 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:40:33,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:40:33,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:40:34,507 INFO L124 PetriNetUnfolderBase]: 463/825 cut-off events. [2024-06-27 23:40:34,507 INFO L125 PetriNetUnfolderBase]: For 78308/78308 co-relation queries the response was YES. [2024-06-27 23:40:34,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6600 conditions, 825 events. 463/825 cut-off events. For 78308/78308 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 3857 event pairs, 63 based on Foata normal form. 1/824 useless extension candidates. Maximal degree in co-relation 6490. Up to 758 conditions per place. [2024-06-27 23:40:34,513 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 191 selfloop transitions, 32 changer transitions 0/225 dead transitions. [2024-06-27 23:40:34,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 225 transitions, 2722 flow [2024-06-27 23:40:34,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:40:34,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:40:34,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-27 23:40:34,514 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36070381231671556 [2024-06-27 23:40:34,514 INFO L175 Difference]: Start difference. First operand has 240 places, 210 transitions, 2238 flow. Second operand 11 states and 123 transitions. [2024-06-27 23:40:34,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 225 transitions, 2722 flow [2024-06-27 23:40:34,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 225 transitions, 2566 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-27 23:40:34,689 INFO L231 Difference]: Finished difference. Result has 244 places, 210 transitions, 2151 flow [2024-06-27 23:40:34,698 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2082, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2151, PETRI_PLACES=244, PETRI_TRANSITIONS=210} [2024-06-27 23:40:34,712 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 214 predicate places. [2024-06-27 23:40:34,712 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 210 transitions, 2151 flow [2024-06-27 23:40:34,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:34,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:40:34,713 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:40:34,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-27 23:40:34,713 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:40:34,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:40:34,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1977076913, now seen corresponding path program 14 times [2024-06-27 23:40:34,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:40:34,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779249487] [2024-06-27 23:40:34,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:40:34,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:40:34,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:40:35,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:40:35,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:40:35,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779249487] [2024-06-27 23:40:35,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779249487] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:40:35,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:40:35,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:40:35,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242999435] [2024-06-27 23:40:35,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:40:35,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:40:35,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:40:35,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:40:35,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:40:35,968 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:40:35,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 210 transitions, 2151 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:35,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:40:35,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:40:35,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:40:36,290 INFO L124 PetriNetUnfolderBase]: 461/822 cut-off events. [2024-06-27 23:40:36,291 INFO L125 PetriNetUnfolderBase]: For 77951/77951 co-relation queries the response was YES. [2024-06-27 23:40:36,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6444 conditions, 822 events. 461/822 cut-off events. For 77951/77951 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 3856 event pairs, 61 based on Foata normal form. 1/821 useless extension candidates. Maximal degree in co-relation 6333. Up to 742 conditions per place. [2024-06-27 23:40:36,299 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 182 selfloop transitions, 38 changer transitions 0/222 dead transitions. [2024-06-27 23:40:36,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 222 transitions, 2621 flow [2024-06-27 23:40:36,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:40:36,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:40:36,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-27 23:40:36,312 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4050179211469534 [2024-06-27 23:40:36,312 INFO L175 Difference]: Start difference. First operand has 244 places, 210 transitions, 2151 flow. Second operand 9 states and 113 transitions. [2024-06-27 23:40:36,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 222 transitions, 2621 flow [2024-06-27 23:40:36,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 222 transitions, 2487 flow, removed 15 selfloop flow, removed 11 redundant places. [2024-06-27 23:40:36,503 INFO L231 Difference]: Finished difference. Result has 242 places, 210 transitions, 2101 flow [2024-06-27 23:40:36,503 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2017, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2101, PETRI_PLACES=242, PETRI_TRANSITIONS=210} [2024-06-27 23:40:36,504 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 212 predicate places. [2024-06-27 23:40:36,504 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 210 transitions, 2101 flow [2024-06-27 23:40:36,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:36,504 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:40:36,504 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:40:36,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-27 23:40:36,504 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:40:36,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:40:36,505 INFO L85 PathProgramCache]: Analyzing trace with hash 891527987, now seen corresponding path program 2 times [2024-06-27 23:40:36,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:40:36,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946473413] [2024-06-27 23:40:36,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:40:36,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:40:36,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:40:38,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:40:38,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:40:38,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946473413] [2024-06-27 23:40:38,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946473413] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:40:38,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:40:38,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:40:38,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551853960] [2024-06-27 23:40:38,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:40:38,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:40:38,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:40:38,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:40:38,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:40:38,133 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:40:38,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 210 transitions, 2101 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:38,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:40:38,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:40:38,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:40:38,538 INFO L124 PetriNetUnfolderBase]: 462/824 cut-off events. [2024-06-27 23:40:38,538 INFO L125 PetriNetUnfolderBase]: For 80126/80126 co-relation queries the response was YES. [2024-06-27 23:40:38,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6363 conditions, 824 events. 462/824 cut-off events. For 80126/80126 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 3859 event pairs, 76 based on Foata normal form. 2/824 useless extension candidates. Maximal degree in co-relation 6252. Up to 715 conditions per place. [2024-06-27 23:40:38,545 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 188 selfloop transitions, 42 changer transitions 0/232 dead transitions. [2024-06-27 23:40:38,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 232 transitions, 2811 flow [2024-06-27 23:40:38,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:40:38,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:40:38,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-27 23:40:38,546 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-27 23:40:38,546 INFO L175 Difference]: Start difference. First operand has 242 places, 210 transitions, 2101 flow. Second operand 10 states and 120 transitions. [2024-06-27 23:40:38,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 232 transitions, 2811 flow [2024-06-27 23:40:38,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 232 transitions, 2702 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-27 23:40:38,708 INFO L231 Difference]: Finished difference. Result has 245 places, 217 transitions, 2200 flow [2024-06-27 23:40:38,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1994, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2200, PETRI_PLACES=245, PETRI_TRANSITIONS=217} [2024-06-27 23:40:38,709 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 215 predicate places. [2024-06-27 23:40:38,709 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 217 transitions, 2200 flow [2024-06-27 23:40:38,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:38,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:40:38,709 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:40:38,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-27 23:40:38,709 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:40:38,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:40:38,710 INFO L85 PathProgramCache]: Analyzing trace with hash 1753963449, now seen corresponding path program 15 times [2024-06-27 23:40:38,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:40:38,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146081526] [2024-06-27 23:40:38,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:40:38,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:40:38,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:40:40,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:40:40,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:40:40,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146081526] [2024-06-27 23:40:40,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146081526] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:40:40,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:40:40,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:40:40,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086592169] [2024-06-27 23:40:40,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:40:40,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:40:40,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:40:40,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:40:40,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:40:40,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:40:40,332 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 217 transitions, 2200 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:40,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:40:40,332 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:40:40,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:40:40,695 INFO L124 PetriNetUnfolderBase]: 465/829 cut-off events. [2024-06-27 23:40:40,695 INFO L125 PetriNetUnfolderBase]: For 78039/78039 co-relation queries the response was YES. [2024-06-27 23:40:40,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6523 conditions, 829 events. 465/829 cut-off events. For 78039/78039 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 3873 event pairs, 56 based on Foata normal form. 1/828 useless extension candidates. Maximal degree in co-relation 6410. Up to 708 conditions per place. [2024-06-27 23:40:40,702 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 168 selfloop transitions, 59 changer transitions 0/229 dead transitions. [2024-06-27 23:40:40,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 229 transitions, 2720 flow [2024-06-27 23:40:40,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:40:40,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:40:40,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 115 transitions. [2024-06-27 23:40:40,704 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4121863799283154 [2024-06-27 23:40:40,704 INFO L175 Difference]: Start difference. First operand has 245 places, 217 transitions, 2200 flow. Second operand 9 states and 115 transitions. [2024-06-27 23:40:40,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 229 transitions, 2720 flow [2024-06-27 23:40:40,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 229 transitions, 2678 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-27 23:40:40,972 INFO L231 Difference]: Finished difference. Result has 249 places, 219 transitions, 2330 flow [2024-06-27 23:40:40,973 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2158, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2330, PETRI_PLACES=249, PETRI_TRANSITIONS=219} [2024-06-27 23:40:40,973 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 219 predicate places. [2024-06-27 23:40:40,973 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 219 transitions, 2330 flow [2024-06-27 23:40:40,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:40,973 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:40:40,973 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:40:40,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-27 23:40:40,974 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:40:40,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:40:40,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1753785695, now seen corresponding path program 10 times [2024-06-27 23:40:40,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:40:40,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230391837] [2024-06-27 23:40:40,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:40:40,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:40:40,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:40:42,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:40:42,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:40:42,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230391837] [2024-06-27 23:40:42,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230391837] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:40:42,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:40:42,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:40:42,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505598317] [2024-06-27 23:40:42,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:40:42,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:40:42,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:40:42,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:40:42,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:40:42,475 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:40:42,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 219 transitions, 2330 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:42,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:40:42,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:40:42,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:40:42,756 INFO L124 PetriNetUnfolderBase]: 442/804 cut-off events. [2024-06-27 23:40:42,757 INFO L125 PetriNetUnfolderBase]: For 78017/78017 co-relation queries the response was YES. [2024-06-27 23:40:42,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6355 conditions, 804 events. 442/804 cut-off events. For 78017/78017 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 3829 event pairs, 52 based on Foata normal form. 2/804 useless extension candidates. Maximal degree in co-relation 6239. Up to 647 conditions per place. [2024-06-27 23:40:42,764 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 159 selfloop transitions, 38 changer transitions 0/230 dead transitions. [2024-06-27 23:40:42,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 230 transitions, 2750 flow [2024-06-27 23:40:42,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:40:42,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:40:42,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 120 transitions. [2024-06-27 23:40:42,766 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43010752688172044 [2024-06-27 23:40:42,766 INFO L175 Difference]: Start difference. First operand has 249 places, 219 transitions, 2330 flow. Second operand 9 states and 120 transitions. [2024-06-27 23:40:42,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 230 transitions, 2750 flow [2024-06-27 23:40:42,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 230 transitions, 2599 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-27 23:40:42,940 INFO L231 Difference]: Finished difference. Result has 250 places, 219 transitions, 2261 flow [2024-06-27 23:40:42,940 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2179, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2261, PETRI_PLACES=250, PETRI_TRANSITIONS=219} [2024-06-27 23:40:42,940 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 220 predicate places. [2024-06-27 23:40:42,940 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 219 transitions, 2261 flow [2024-06-27 23:40:42,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:42,941 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:40:42,941 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:40:42,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-27 23:40:42,942 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:40:42,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:40:42,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1753790469, now seen corresponding path program 16 times [2024-06-27 23:40:42,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:40:42,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500053398] [2024-06-27 23:40:42,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:40:42,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:40:42,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:40:44,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:40:44,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:40:44,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500053398] [2024-06-27 23:40:44,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500053398] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:40:44,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:40:44,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:40:44,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317583609] [2024-06-27 23:40:44,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:40:44,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:40:44,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:40:44,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:40:44,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:40:44,367 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:40:44,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 219 transitions, 2261 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:44,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:40:44,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:40:44,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:40:44,684 INFO L124 PetriNetUnfolderBase]: 465/829 cut-off events. [2024-06-27 23:40:44,685 INFO L125 PetriNetUnfolderBase]: For 75150/75150 co-relation queries the response was YES. [2024-06-27 23:40:44,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6452 conditions, 829 events. 465/829 cut-off events. For 75150/75150 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 3878 event pairs, 55 based on Foata normal form. 1/828 useless extension candidates. Maximal degree in co-relation 6336. Up to 708 conditions per place. [2024-06-27 23:40:44,692 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 173 selfloop transitions, 56 changer transitions 0/231 dead transitions. [2024-06-27 23:40:44,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 231 transitions, 2789 flow [2024-06-27 23:40:44,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:40:44,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:40:44,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-27 23:40:44,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4157706093189964 [2024-06-27 23:40:44,693 INFO L175 Difference]: Start difference. First operand has 250 places, 219 transitions, 2261 flow. Second operand 9 states and 116 transitions. [2024-06-27 23:40:44,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 231 transitions, 2789 flow [2024-06-27 23:40:44,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 231 transitions, 2630 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-27 23:40:44,879 INFO L231 Difference]: Finished difference. Result has 250 places, 221 transitions, 2272 flow [2024-06-27 23:40:44,879 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2102, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2272, PETRI_PLACES=250, PETRI_TRANSITIONS=221} [2024-06-27 23:40:44,879 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 220 predicate places. [2024-06-27 23:40:44,880 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 221 transitions, 2272 flow [2024-06-27 23:40:44,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:44,880 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:40:44,880 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:40:44,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-27 23:40:44,880 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:40:44,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:40:44,881 INFO L85 PathProgramCache]: Analyzing trace with hash 1753785819, now seen corresponding path program 17 times [2024-06-27 23:40:44,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:40:44,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41242171] [2024-06-27 23:40:44,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:40:44,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:40:44,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:40:46,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:40:46,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:40:46,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41242171] [2024-06-27 23:40:46,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41242171] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:40:46,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:40:46,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:40:46,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222681468] [2024-06-27 23:40:46,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:40:46,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:40:46,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:40:46,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:40:46,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:40:46,293 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:40:46,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 221 transitions, 2272 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:46,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:40:46,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:40:46,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:40:46,584 INFO L124 PetriNetUnfolderBase]: 463/826 cut-off events. [2024-06-27 23:40:46,584 INFO L125 PetriNetUnfolderBase]: For 72351/72351 co-relation queries the response was YES. [2024-06-27 23:40:46,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6291 conditions, 826 events. 463/826 cut-off events. For 72351/72351 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 3868 event pairs, 55 based on Foata normal form. 1/825 useless extension candidates. Maximal degree in co-relation 6175. Up to 687 conditions per place. [2024-06-27 23:40:46,591 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 165 selfloop transitions, 66 changer transitions 0/233 dead transitions. [2024-06-27 23:40:46,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 233 transitions, 2808 flow [2024-06-27 23:40:46,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:40:46,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:40:46,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-06-27 23:40:46,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-27 23:40:46,593 INFO L175 Difference]: Start difference. First operand has 250 places, 221 transitions, 2272 flow. Second operand 9 states and 117 transitions. [2024-06-27 23:40:46,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 233 transitions, 2808 flow [2024-06-27 23:40:46,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 233 transitions, 2592 flow, removed 28 selfloop flow, removed 11 redundant places. [2024-06-27 23:40:46,771 INFO L231 Difference]: Finished difference. Result has 248 places, 223 transitions, 2250 flow [2024-06-27 23:40:46,771 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2062, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2250, PETRI_PLACES=248, PETRI_TRANSITIONS=223} [2024-06-27 23:40:46,772 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 218 predicate places. [2024-06-27 23:40:46,772 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 223 transitions, 2250 flow [2024-06-27 23:40:46,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:46,772 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:40:46,772 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:40:46,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-27 23:40:46,772 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:40:46,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:40:46,773 INFO L85 PathProgramCache]: Analyzing trace with hash 891527739, now seen corresponding path program 15 times [2024-06-27 23:40:46,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:40:46,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892693220] [2024-06-27 23:40:46,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:40:46,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:40:46,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:40:48,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:40:48,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:40:48,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892693220] [2024-06-27 23:40:48,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892693220] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:40:48,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:40:48,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:40:48,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91832750] [2024-06-27 23:40:48,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:40:48,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:40:48,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:40:48,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:40:48,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:40:48,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:40:48,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 223 transitions, 2250 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:48,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:40:48,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:40:48,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:40:49,145 INFO L124 PetriNetUnfolderBase]: 461/824 cut-off events. [2024-06-27 23:40:49,145 INFO L125 PetriNetUnfolderBase]: For 69288/69288 co-relation queries the response was YES. [2024-06-27 23:40:49,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6036 conditions, 824 events. 461/824 cut-off events. For 69288/69288 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 3872 event pairs, 56 based on Foata normal form. 1/823 useless extension candidates. Maximal degree in co-relation 5923. Up to 645 conditions per place. [2024-06-27 23:40:49,152 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 155 selfloop transitions, 78 changer transitions 0/235 dead transitions. [2024-06-27 23:40:49,152 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 235 transitions, 2746 flow [2024-06-27 23:40:49,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:40:49,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:40:49,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-27 23:40:49,153 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-27 23:40:49,153 INFO L175 Difference]: Start difference. First operand has 248 places, 223 transitions, 2250 flow. Second operand 10 states and 120 transitions. [2024-06-27 23:40:49,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 235 transitions, 2746 flow [2024-06-27 23:40:49,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 235 transitions, 2558 flow, removed 28 selfloop flow, removed 9 redundant places. [2024-06-27 23:40:49,301 INFO L231 Difference]: Finished difference. Result has 249 places, 223 transitions, 2223 flow [2024-06-27 23:40:49,301 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2062, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2223, PETRI_PLACES=249, PETRI_TRANSITIONS=223} [2024-06-27 23:40:49,301 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 219 predicate places. [2024-06-27 23:40:49,301 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 223 transitions, 2223 flow [2024-06-27 23:40:49,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:49,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:40:49,302 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:40:49,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-27 23:40:49,302 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:40:49,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:40:49,302 INFO L85 PathProgramCache]: Analyzing trace with hash 408346647, now seen corresponding path program 1 times [2024-06-27 23:40:49,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:40:49,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848403243] [2024-06-27 23:40:49,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:40:49,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:40:49,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:40:51,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:40:51,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:40:51,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848403243] [2024-06-27 23:40:51,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848403243] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:40:51,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:40:51,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:40:51,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159153716] [2024-06-27 23:40:51,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:40:51,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:40:51,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:40:51,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:40:51,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:40:51,860 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:40:51,860 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 223 transitions, 2223 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:51,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:40:51,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:40:51,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:40:52,328 INFO L124 PetriNetUnfolderBase]: 458/818 cut-off events. [2024-06-27 23:40:52,329 INFO L125 PetriNetUnfolderBase]: For 66634/66634 co-relation queries the response was YES. [2024-06-27 23:40:52,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5842 conditions, 818 events. 458/818 cut-off events. For 66634/66634 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 3826 event pairs, 92 based on Foata normal form. 2/818 useless extension candidates. Maximal degree in co-relation 5730. Up to 784 conditions per place. [2024-06-27 23:40:52,336 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 214 selfloop transitions, 16 changer transitions 0/232 dead transitions. [2024-06-27 23:40:52,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 232 transitions, 2703 flow [2024-06-27 23:40:52,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:40:52,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:40:52,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 103 transitions. [2024-06-27 23:40:52,337 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33225806451612905 [2024-06-27 23:40:52,337 INFO L175 Difference]: Start difference. First operand has 249 places, 223 transitions, 2223 flow. Second operand 10 states and 103 transitions. [2024-06-27 23:40:52,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 232 transitions, 2703 flow [2024-06-27 23:40:52,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 232 transitions, 2542 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-27 23:40:52,478 INFO L231 Difference]: Finished difference. Result has 250 places, 223 transitions, 2098 flow [2024-06-27 23:40:52,479 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2062, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2098, PETRI_PLACES=250, PETRI_TRANSITIONS=223} [2024-06-27 23:40:52,479 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 220 predicate places. [2024-06-27 23:40:52,479 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 223 transitions, 2098 flow [2024-06-27 23:40:52,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:52,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:40:52,479 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:40:52,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-27 23:40:52,480 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:40:52,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:40:52,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1390384101, now seen corresponding path program 1 times [2024-06-27 23:40:52,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:40:52,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033626626] [2024-06-27 23:40:52,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:40:52,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:40:52,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:40:54,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:40:54,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:40:54,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033626626] [2024-06-27 23:40:54,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033626626] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:40:54,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:40:54,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:40:54,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701288326] [2024-06-27 23:40:54,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:40:54,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:40:54,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:40:54,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:40:54,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:40:54,247 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:40:54,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 223 transitions, 2098 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:54,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:40:54,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:40:54,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:40:54,678 INFO L124 PetriNetUnfolderBase]: 469/840 cut-off events. [2024-06-27 23:40:54,678 INFO L125 PetriNetUnfolderBase]: For 74448/74448 co-relation queries the response was YES. [2024-06-27 23:40:54,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6050 conditions, 840 events. 469/840 cut-off events. For 74448/74448 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4003 event pairs, 87 based on Foata normal form. 2/840 useless extension candidates. Maximal degree in co-relation 5937. Up to 731 conditions per place. [2024-06-27 23:40:54,685 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 215 selfloop transitions, 26 changer transitions 0/243 dead transitions. [2024-06-27 23:40:54,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 243 transitions, 2822 flow [2024-06-27 23:40:54,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:40:54,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:40:54,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 131 transitions. [2024-06-27 23:40:54,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3521505376344086 [2024-06-27 23:40:54,686 INFO L175 Difference]: Start difference. First operand has 250 places, 223 transitions, 2098 flow. Second operand 12 states and 131 transitions. [2024-06-27 23:40:54,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 243 transitions, 2822 flow [2024-06-27 23:40:54,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 243 transitions, 2784 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-27 23:40:54,836 INFO L231 Difference]: Finished difference. Result has 254 places, 225 transitions, 2170 flow [2024-06-27 23:40:54,836 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2060, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2170, PETRI_PLACES=254, PETRI_TRANSITIONS=225} [2024-06-27 23:40:54,836 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 224 predicate places. [2024-06-27 23:40:54,836 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 225 transitions, 2170 flow [2024-06-27 23:40:54,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:54,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:40:54,837 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:40:54,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-27 23:40:54,837 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:40:54,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:40:54,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1392258051, now seen corresponding path program 2 times [2024-06-27 23:40:54,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:40:54,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400764731] [2024-06-27 23:40:54,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:40:54,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:40:54,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:40:56,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:40:56,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:40:56,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400764731] [2024-06-27 23:40:56,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400764731] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:40:56,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:40:56,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:40:56,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557787109] [2024-06-27 23:40:56,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:40:56,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:40:56,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:40:56,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:40:56,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:40:56,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:40:56,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 225 transitions, 2170 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:56,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:40:56,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:40:56,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:40:56,950 INFO L124 PetriNetUnfolderBase]: 480/861 cut-off events. [2024-06-27 23:40:56,950 INFO L125 PetriNetUnfolderBase]: For 82015/82015 co-relation queries the response was YES. [2024-06-27 23:40:56,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6422 conditions, 861 events. 480/861 cut-off events. For 82015/82015 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 4149 event pairs, 92 based on Foata normal form. 2/861 useless extension candidates. Maximal degree in co-relation 6308. Up to 788 conditions per place. [2024-06-27 23:40:56,958 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 215 selfloop transitions, 26 changer transitions 0/243 dead transitions. [2024-06-27 23:40:56,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 243 transitions, 2894 flow [2024-06-27 23:40:56,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:40:56,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:40:56,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 130 transitions. [2024-06-27 23:40:56,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34946236559139787 [2024-06-27 23:40:56,959 INFO L175 Difference]: Start difference. First operand has 254 places, 225 transitions, 2170 flow. Second operand 12 states and 130 transitions. [2024-06-27 23:40:56,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 243 transitions, 2894 flow [2024-06-27 23:40:57,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 243 transitions, 2808 flow, removed 27 selfloop flow, removed 8 redundant places. [2024-06-27 23:40:57,135 INFO L231 Difference]: Finished difference. Result has 258 places, 227 transitions, 2198 flow [2024-06-27 23:40:57,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2104, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2198, PETRI_PLACES=258, PETRI_TRANSITIONS=227} [2024-06-27 23:40:57,136 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 228 predicate places. [2024-06-27 23:40:57,136 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 227 transitions, 2198 flow [2024-06-27 23:40:57,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:57,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:40:57,136 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:40:57,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-27 23:40:57,137 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:40:57,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:40:57,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1392261926, now seen corresponding path program 1 times [2024-06-27 23:40:57,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:40:57,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352640681] [2024-06-27 23:40:57,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:40:57,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:40:57,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:40:58,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:40:58,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:40:58,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352640681] [2024-06-27 23:40:58,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352640681] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:40:58,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:40:58,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:40:58,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709834941] [2024-06-27 23:40:58,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:40:58,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:40:58,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:40:58,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:40:58,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:40:58,700 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:40:58,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 227 transitions, 2198 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:58,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:40:58,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:40:58,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:40:59,063 INFO L124 PetriNetUnfolderBase]: 488/874 cut-off events. [2024-06-27 23:40:59,064 INFO L125 PetriNetUnfolderBase]: For 84488/84488 co-relation queries the response was YES. [2024-06-27 23:40:59,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6533 conditions, 874 events. 488/874 cut-off events. For 84488/84488 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 4215 event pairs, 93 based on Foata normal form. 1/873 useless extension candidates. Maximal degree in co-relation 6417. Up to 810 conditions per place. [2024-06-27 23:40:59,071 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 216 selfloop transitions, 27 changer transitions 0/245 dead transitions. [2024-06-27 23:40:59,071 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 245 transitions, 2924 flow [2024-06-27 23:40:59,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:40:59,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:40:59,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-27 23:40:59,072 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-27 23:40:59,073 INFO L175 Difference]: Start difference. First operand has 258 places, 227 transitions, 2198 flow. Second operand 11 states and 124 transitions. [2024-06-27 23:40:59,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 245 transitions, 2924 flow [2024-06-27 23:40:59,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 245 transitions, 2878 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-27 23:40:59,272 INFO L231 Difference]: Finished difference. Result has 261 places, 231 transitions, 2271 flow [2024-06-27 23:40:59,272 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2152, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2271, PETRI_PLACES=261, PETRI_TRANSITIONS=231} [2024-06-27 23:40:59,273 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 231 predicate places. [2024-06-27 23:40:59,273 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 231 transitions, 2271 flow [2024-06-27 23:40:59,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:59,273 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:40:59,273 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:40:59,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-27 23:40:59,273 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:40:59,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:40:59,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1392261771, now seen corresponding path program 3 times [2024-06-27 23:40:59,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:40:59,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880660263] [2024-06-27 23:40:59,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:40:59,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:40:59,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:41:01,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:41:01,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:41:01,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880660263] [2024-06-27 23:41:01,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880660263] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:41:01,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:41:01,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:41:01,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207657582] [2024-06-27 23:41:01,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:41:01,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:41:01,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:41:01,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:41:01,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:41:01,152 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:41:01,152 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 231 transitions, 2271 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:41:01,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:41:01,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:41:01,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:41:01,597 INFO L124 PetriNetUnfolderBase]: 485/869 cut-off events. [2024-06-27 23:41:01,597 INFO L125 PetriNetUnfolderBase]: For 83913/83913 co-relation queries the response was YES. [2024-06-27 23:41:01,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6423 conditions, 869 events. 485/869 cut-off events. For 83913/83913 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 4160 event pairs, 92 based on Foata normal form. 2/869 useless extension candidates. Maximal degree in co-relation 6305. Up to 813 conditions per place. [2024-06-27 23:41:01,605 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 218 selfloop transitions, 25 changer transitions 0/245 dead transitions. [2024-06-27 23:41:01,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 245 transitions, 2793 flow [2024-06-27 23:41:01,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:41:01,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:41:01,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 127 transitions. [2024-06-27 23:41:01,606 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34139784946236557 [2024-06-27 23:41:01,606 INFO L175 Difference]: Start difference. First operand has 261 places, 231 transitions, 2271 flow. Second operand 12 states and 127 transitions. [2024-06-27 23:41:01,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 245 transitions, 2793 flow [2024-06-27 23:41:01,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 245 transitions, 2719 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-27 23:41:01,819 INFO L231 Difference]: Finished difference. Result has 266 places, 231 transitions, 2251 flow [2024-06-27 23:41:01,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2197, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2251, PETRI_PLACES=266, PETRI_TRANSITIONS=231} [2024-06-27 23:41:01,820 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 236 predicate places. [2024-06-27 23:41:01,820 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 231 transitions, 2251 flow [2024-06-27 23:41:01,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:41:01,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:41:01,820 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:41:01,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-27 23:41:01,821 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:41:01,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:41:01,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1479097731, now seen corresponding path program 4 times [2024-06-27 23:41:01,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:41:01,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135623135] [2024-06-27 23:41:01,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:41:01,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:41:01,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:41:03,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:41:03,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:41:03,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135623135] [2024-06-27 23:41:03,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135623135] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:41:03,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:41:03,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:41:03,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705534886] [2024-06-27 23:41:03,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:41:03,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:41:03,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:41:03,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:41:03,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:41:03,379 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:41:03,379 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 231 transitions, 2251 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:41:03,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:41:03,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:41:03,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:41:03,782 INFO L124 PetriNetUnfolderBase]: 489/877 cut-off events. [2024-06-27 23:41:03,783 INFO L125 PetriNetUnfolderBase]: For 85932/85932 co-relation queries the response was YES. [2024-06-27 23:41:03,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6483 conditions, 877 events. 489/877 cut-off events. For 85932/85932 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 4229 event pairs, 94 based on Foata normal form. 2/877 useless extension candidates. Maximal degree in co-relation 6363. Up to 838 conditions per place. [2024-06-27 23:41:03,790 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 225 selfloop transitions, 17 changer transitions 0/244 dead transitions. [2024-06-27 23:41:03,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 244 transitions, 2785 flow [2024-06-27 23:41:03,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:41:03,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:41:03,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 114 transitions. [2024-06-27 23:41:03,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3343108504398827 [2024-06-27 23:41:03,791 INFO L175 Difference]: Start difference. First operand has 266 places, 231 transitions, 2251 flow. Second operand 11 states and 114 transitions. [2024-06-27 23:41:03,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 244 transitions, 2785 flow [2024-06-27 23:41:03,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 244 transitions, 2733 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-06-27 23:41:03,991 INFO L231 Difference]: Finished difference. Result has 266 places, 232 transitions, 2259 flow [2024-06-27 23:41:03,992 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2199, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2259, PETRI_PLACES=266, PETRI_TRANSITIONS=232} [2024-06-27 23:41:03,992 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 236 predicate places. [2024-06-27 23:41:03,992 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 232 transitions, 2259 flow [2024-06-27 23:41:03,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:41:03,992 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:41:03,992 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:41:03,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-27 23:41:03,993 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:41:03,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:41:03,993 INFO L85 PathProgramCache]: Analyzing trace with hash -1295981456, now seen corresponding path program 2 times [2024-06-27 23:41:03,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:41:03,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861505903] [2024-06-27 23:41:03,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:41:03,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:41:04,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:41:05,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:41:05,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:41:05,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861505903] [2024-06-27 23:41:05,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861505903] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:41:05,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:41:05,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:41:05,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218478125] [2024-06-27 23:41:05,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:41:05,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:41:05,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:41:05,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:41:05,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:41:05,439 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:41:05,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 232 transitions, 2259 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:41:05,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:41:05,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:41:05,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:41:05,855 INFO L124 PetriNetUnfolderBase]: 492/882 cut-off events. [2024-06-27 23:41:05,856 INFO L125 PetriNetUnfolderBase]: For 85230/85230 co-relation queries the response was YES. [2024-06-27 23:41:05,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6534 conditions, 882 events. 492/882 cut-off events. For 85230/85230 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 4289 event pairs, 94 based on Foata normal form. 1/881 useless extension candidates. Maximal degree in co-relation 6413. Up to 846 conditions per place. [2024-06-27 23:41:05,866 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 225 selfloop transitions, 18 changer transitions 0/245 dead transitions. [2024-06-27 23:41:05,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 245 transitions, 2799 flow [2024-06-27 23:41:05,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:41:05,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:41:05,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-27 23:41:05,868 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34838709677419355 [2024-06-27 23:41:05,868 INFO L175 Difference]: Start difference. First operand has 266 places, 232 transitions, 2259 flow. Second operand 10 states and 108 transitions. [2024-06-27 23:41:05,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 245 transitions, 2799 flow [2024-06-27 23:41:06,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 245 transitions, 2751 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-27 23:41:06,128 INFO L231 Difference]: Finished difference. Result has 267 places, 234 transitions, 2282 flow [2024-06-27 23:41:06,128 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2211, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2282, PETRI_PLACES=267, PETRI_TRANSITIONS=234} [2024-06-27 23:41:06,128 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 237 predicate places. [2024-06-27 23:41:06,128 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 234 transitions, 2282 flow [2024-06-27 23:41:06,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:41:06,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:41:06,129 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:41:06,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-27 23:41:06,129 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:41:06,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:41:06,129 INFO L85 PathProgramCache]: Analyzing trace with hash 2139511084, now seen corresponding path program 3 times [2024-06-27 23:41:06,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:41:06,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637212946] [2024-06-27 23:41:06,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:41:06,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:41:06,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:41:07,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:41:07,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:41:07,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637212946] [2024-06-27 23:41:07,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637212946] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:41:07,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:41:07,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:41:07,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057060839] [2024-06-27 23:41:07,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:41:07,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:41:07,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:41:07,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:41:07,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:41:07,873 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:41:07,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 234 transitions, 2282 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:41:07,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:41:07,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:41:07,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:41:08,274 INFO L124 PetriNetUnfolderBase]: 495/887 cut-off events. [2024-06-27 23:41:08,275 INFO L125 PetriNetUnfolderBase]: For 87352/87352 co-relation queries the response was YES. [2024-06-27 23:41:08,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6578 conditions, 887 events. 495/887 cut-off events. For 87352/87352 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 4298 event pairs, 94 based on Foata normal form. 1/886 useless extension candidates. Maximal degree in co-relation 6456. Up to 845 conditions per place. [2024-06-27 23:41:08,283 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 224 selfloop transitions, 21 changer transitions 0/247 dead transitions. [2024-06-27 23:41:08,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 247 transitions, 2830 flow [2024-06-27 23:41:08,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:41:08,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:41:08,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-27 23:41:08,284 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34017595307917886 [2024-06-27 23:41:08,284 INFO L175 Difference]: Start difference. First operand has 267 places, 234 transitions, 2282 flow. Second operand 11 states and 116 transitions. [2024-06-27 23:41:08,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 247 transitions, 2830 flow [2024-06-27 23:41:08,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 247 transitions, 2777 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-27 23:41:08,493 INFO L231 Difference]: Finished difference. Result has 270 places, 236 transitions, 2310 flow [2024-06-27 23:41:08,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2229, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2310, PETRI_PLACES=270, PETRI_TRANSITIONS=236} [2024-06-27 23:41:08,493 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 240 predicate places. [2024-06-27 23:41:08,494 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 236 transitions, 2310 flow [2024-06-27 23:41:08,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:41:08,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:41:08,494 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:41:08,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-27 23:41:08,494 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:41:08,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:41:08,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1296135061, now seen corresponding path program 5 times [2024-06-27 23:41:08,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:41:08,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213039488] [2024-06-27 23:41:08,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:41:08,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:41:08,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:41:09,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:41:09,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:41:09,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213039488] [2024-06-27 23:41:09,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213039488] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:41:09,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:41:09,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:41:09,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934340610] [2024-06-27 23:41:09,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:41:09,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:41:09,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:41:09,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:41:09,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:41:10,066 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:41:10,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 236 transitions, 2310 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:41:10,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:41:10,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:41:10,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:41:10,478 INFO L124 PetriNetUnfolderBase]: 499/895 cut-off events. [2024-06-27 23:41:10,479 INFO L125 PetriNetUnfolderBase]: For 92844/92844 co-relation queries the response was YES. [2024-06-27 23:41:10,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6662 conditions, 895 events. 499/895 cut-off events. For 92844/92844 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 4358 event pairs, 92 based on Foata normal form. 2/895 useless extension candidates. Maximal degree in co-relation 6539. Up to 827 conditions per place. [2024-06-27 23:41:10,489 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 227 selfloop transitions, 22 changer transitions 0/251 dead transitions. [2024-06-27 23:41:10,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 251 transitions, 3022 flow [2024-06-27 23:41:10,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:41:10,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:41:10,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-27 23:41:10,490 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36129032258064514 [2024-06-27 23:41:10,490 INFO L175 Difference]: Start difference. First operand has 270 places, 236 transitions, 2310 flow. Second operand 10 states and 112 transitions. [2024-06-27 23:41:10,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 251 transitions, 3022 flow [2024-06-27 23:41:10,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 251 transitions, 2961 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-27 23:41:10,721 INFO L231 Difference]: Finished difference. Result has 271 places, 237 transitions, 2319 flow [2024-06-27 23:41:10,721 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2249, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2319, PETRI_PLACES=271, PETRI_TRANSITIONS=237} [2024-06-27 23:41:10,722 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 241 predicate places. [2024-06-27 23:41:10,722 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 237 transitions, 2319 flow [2024-06-27 23:41:10,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:41:10,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:41:10,722 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:41:10,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-27 23:41:10,723 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:41:10,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:41:10,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1296131186, now seen corresponding path program 4 times [2024-06-27 23:41:10,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:41:10,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558265389] [2024-06-27 23:41:10,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:41:10,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:41:10,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:41:12,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:41:12,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:41:12,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558265389] [2024-06-27 23:41:12,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558265389] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:41:12,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:41:12,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:41:12,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854478177] [2024-06-27 23:41:12,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:41:12,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:41:12,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:41:12,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:41:12,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:41:12,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:41:12,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 237 transitions, 2319 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:41:12,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:41:12,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:41:12,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:41:12,939 INFO L124 PetriNetUnfolderBase]: 497/892 cut-off events. [2024-06-27 23:41:12,940 INFO L125 PetriNetUnfolderBase]: For 88778/88778 co-relation queries the response was YES. [2024-06-27 23:41:12,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6585 conditions, 892 events. 497/892 cut-off events. For 88778/88778 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 4346 event pairs, 94 based on Foata normal form. 1/891 useless extension candidates. Maximal degree in co-relation 6461. Up to 841 conditions per place. [2024-06-27 23:41:12,946 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 221 selfloop transitions, 25 changer transitions 0/248 dead transitions. [2024-06-27 23:41:12,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 248 transitions, 2839 flow [2024-06-27 23:41:12,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:41:12,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:41:12,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-27 23:41:12,947 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3460410557184751 [2024-06-27 23:41:12,947 INFO L175 Difference]: Start difference. First operand has 271 places, 237 transitions, 2319 flow. Second operand 11 states and 118 transitions. [2024-06-27 23:41:12,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 248 transitions, 2839 flow [2024-06-27 23:41:13,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 248 transitions, 2743 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-27 23:41:13,202 INFO L231 Difference]: Finished difference. Result has 273 places, 237 transitions, 2278 flow [2024-06-27 23:41:13,216 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2223, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2278, PETRI_PLACES=273, PETRI_TRANSITIONS=237} [2024-06-27 23:41:13,216 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 243 predicate places. [2024-06-27 23:41:13,216 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 237 transitions, 2278 flow [2024-06-27 23:41:13,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:41:13,217 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:41:13,217 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:41:13,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-27 23:41:13,217 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:41:13,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:41:13,217 INFO L85 PathProgramCache]: Analyzing trace with hash -1296131341, now seen corresponding path program 6 times [2024-06-27 23:41:13,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:41:13,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574088782] [2024-06-27 23:41:13,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:41:13,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:41:13,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:41:14,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:41:14,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:41:14,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574088782] [2024-06-27 23:41:14,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574088782] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:41:14,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:41:14,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:41:14,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814293208] [2024-06-27 23:41:14,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:41:14,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:41:14,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:41:14,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:41:14,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:41:14,975 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:41:14,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 237 transitions, 2278 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:41:14,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:41:14,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:41:14,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:41:15,419 INFO L124 PetriNetUnfolderBase]: 494/887 cut-off events. [2024-06-27 23:41:15,420 INFO L125 PetriNetUnfolderBase]: For 87357/87357 co-relation queries the response was YES. [2024-06-27 23:41:15,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6331 conditions, 887 events. 494/887 cut-off events. For 87357/87357 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 4320 event pairs, 93 based on Foata normal form. 2/887 useless extension candidates. Maximal degree in co-relation 6207. Up to 842 conditions per place. [2024-06-27 23:41:15,428 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 227 selfloop transitions, 20 changer transitions 0/249 dead transitions. [2024-06-27 23:41:15,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 249 transitions, 2802 flow [2024-06-27 23:41:15,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:41:15,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:41:15,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-27 23:41:15,429 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34017595307917886 [2024-06-27 23:41:15,429 INFO L175 Difference]: Start difference. First operand has 273 places, 237 transitions, 2278 flow. Second operand 11 states and 116 transitions. [2024-06-27 23:41:15,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 249 transitions, 2802 flow [2024-06-27 23:41:15,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 249 transitions, 2714 flow, removed 13 selfloop flow, removed 10 redundant places. [2024-06-27 23:41:15,652 INFO L231 Difference]: Finished difference. Result has 274 places, 237 transitions, 2234 flow [2024-06-27 23:41:15,652 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2190, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2234, PETRI_PLACES=274, PETRI_TRANSITIONS=237} [2024-06-27 23:41:15,654 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 244 predicate places. [2024-06-27 23:41:15,654 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 237 transitions, 2234 flow [2024-06-27 23:41:15,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:41:15,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:41:15,655 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:41:15,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-27 23:41:15,655 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:41:15,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:41:15,655 INFO L85 PathProgramCache]: Analyzing trace with hash -2016928217, now seen corresponding path program 7 times [2024-06-27 23:41:15,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:41:15,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165717954] [2024-06-27 23:41:15,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:41:15,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:41:15,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:41:17,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:41:17,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:41:17,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165717954] [2024-06-27 23:41:17,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165717954] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:41:17,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:41:17,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:41:17,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032211137] [2024-06-27 23:41:17,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:41:17,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:41:17,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:41:17,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:41:17,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:41:17,548 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:41:17,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 237 transitions, 2234 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:41:17,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:41:17,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:41:17,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:41:17,872 INFO L124 PetriNetUnfolderBase]: 498/895 cut-off events. [2024-06-27 23:41:17,872 INFO L125 PetriNetUnfolderBase]: For 89511/89511 co-relation queries the response was YES. [2024-06-27 23:41:17,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6373 conditions, 895 events. 498/895 cut-off events. For 89511/89511 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 4364 event pairs, 97 based on Foata normal form. 2/895 useless extension candidates. Maximal degree in co-relation 6248. Up to 814 conditions per place. [2024-06-27 23:41:17,880 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 212 selfloop transitions, 35 changer transitions 0/249 dead transitions. [2024-06-27 23:41:17,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 249 transitions, 2782 flow [2024-06-27 23:41:17,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:41:17,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:41:17,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-27 23:41:17,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-27 23:41:17,881 INFO L175 Difference]: Start difference. First operand has 274 places, 237 transitions, 2234 flow. Second operand 11 states and 121 transitions. [2024-06-27 23:41:17,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 249 transitions, 2782 flow [2024-06-27 23:41:18,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 249 transitions, 2736 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-27 23:41:18,097 INFO L231 Difference]: Finished difference. Result has 275 places, 238 transitions, 2292 flow [2024-06-27 23:41:18,098 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2188, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2292, PETRI_PLACES=275, PETRI_TRANSITIONS=238} [2024-06-27 23:41:18,098 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 245 predicate places. [2024-06-27 23:41:18,098 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 238 transitions, 2292 flow [2024-06-27 23:41:18,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:41:18,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:41:18,099 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:41:18,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-27 23:41:18,099 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:41:18,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:41:18,106 INFO L85 PathProgramCache]: Analyzing trace with hash -2016928062, now seen corresponding path program 5 times [2024-06-27 23:41:18,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:41:18,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682148109] [2024-06-27 23:41:18,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:41:18,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:41:18,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:41:19,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:41:19,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:41:19,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682148109] [2024-06-27 23:41:19,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682148109] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:41:19,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:41:19,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:41:19,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007150318] [2024-06-27 23:41:19,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:41:19,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:41:19,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:41:19,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:41:19,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:41:19,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:41:19,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 238 transitions, 2292 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:41:19,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:41:19,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:41:19,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:41:20,076 INFO L124 PetriNetUnfolderBase]: 506/908 cut-off events. [2024-06-27 23:41:20,076 INFO L125 PetriNetUnfolderBase]: For 91994/91994 co-relation queries the response was YES. [2024-06-27 23:41:20,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6608 conditions, 908 events. 506/908 cut-off events. For 91994/91994 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 4436 event pairs, 96 based on Foata normal form. 1/907 useless extension candidates. Maximal degree in co-relation 6482. Up to 781 conditions per place. [2024-06-27 23:41:20,085 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 196 selfloop transitions, 55 changer transitions 0/253 dead transitions. [2024-06-27 23:41:20,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 253 transitions, 3050 flow [2024-06-27 23:41:20,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:41:20,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:41:20,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-27 23:41:20,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375366568914956 [2024-06-27 23:41:20,086 INFO L175 Difference]: Start difference. First operand has 275 places, 238 transitions, 2292 flow. Second operand 11 states and 128 transitions. [2024-06-27 23:41:20,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 253 transitions, 3050 flow [2024-06-27 23:41:20,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 253 transitions, 2956 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-27 23:41:20,336 INFO L231 Difference]: Finished difference. Result has 277 places, 242 transitions, 2381 flow [2024-06-27 23:41:20,337 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2198, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2381, PETRI_PLACES=277, PETRI_TRANSITIONS=242} [2024-06-27 23:41:20,337 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 247 predicate places. [2024-06-27 23:41:20,337 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 242 transitions, 2381 flow [2024-06-27 23:41:20,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:41:20,337 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:41:20,337 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:41:20,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-27 23:41:20,338 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:41:20,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:41:20,338 INFO L85 PathProgramCache]: Analyzing trace with hash 763519085, now seen corresponding path program 8 times [2024-06-27 23:41:20,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:41:20,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257887355] [2024-06-27 23:41:20,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:41:20,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:41:20,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:41:21,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:41:21,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:41:21,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257887355] [2024-06-27 23:41:21,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257887355] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:41:21,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:41:21,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:41:21,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288903498] [2024-06-27 23:41:21,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:41:21,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:41:21,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:41:21,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:41:21,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:41:21,926 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:41:21,926 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 242 transitions, 2381 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:41:21,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:41:21,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:41:21,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:41:22,229 INFO L124 PetriNetUnfolderBase]: 510/916 cut-off events. [2024-06-27 23:41:22,229 INFO L125 PetriNetUnfolderBase]: For 97908/97908 co-relation queries the response was YES. [2024-06-27 23:41:22,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6724 conditions, 916 events. 510/916 cut-off events. For 97908/97908 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 4498 event pairs, 97 based on Foata normal form. 2/916 useless extension candidates. Maximal degree in co-relation 6597. Up to 835 conditions per place. [2024-06-27 23:41:22,238 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 216 selfloop transitions, 36 changer transitions 0/254 dead transitions. [2024-06-27 23:41:22,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 254 transitions, 2941 flow [2024-06-27 23:41:22,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:41:22,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:41:22,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-27 23:41:22,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3519061583577713 [2024-06-27 23:41:22,239 INFO L175 Difference]: Start difference. First operand has 277 places, 242 transitions, 2381 flow. Second operand 11 states and 120 transitions. [2024-06-27 23:41:22,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 254 transitions, 2941 flow [2024-06-27 23:41:22,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 254 transitions, 2842 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-27 23:41:22,473 INFO L231 Difference]: Finished difference. Result has 281 places, 243 transitions, 2390 flow [2024-06-27 23:41:22,473 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2282, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2390, PETRI_PLACES=281, PETRI_TRANSITIONS=243} [2024-06-27 23:41:22,473 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 251 predicate places. [2024-06-27 23:41:22,473 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 243 transitions, 2390 flow [2024-06-27 23:41:22,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:41:22,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:41:22,474 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:41:22,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-27 23:41:22,474 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:41:22,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:41:22,474 INFO L85 PathProgramCache]: Analyzing trace with hash 763519240, now seen corresponding path program 6 times [2024-06-27 23:41:22,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:41:22,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511217645] [2024-06-27 23:41:22,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:41:22,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:41:22,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:41:24,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:41:24,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:41:24,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511217645] [2024-06-27 23:41:24,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511217645] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:41:24,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:41:24,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:41:24,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698109378] [2024-06-27 23:41:24,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:41:24,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:41:24,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:41:24,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:41:24,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:41:24,149 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:41:24,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 243 transitions, 2390 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:41:24,150 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:41:24,150 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:41:24,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:41:24,493 INFO L124 PetriNetUnfolderBase]: 523/937 cut-off events. [2024-06-27 23:41:24,493 INFO L125 PetriNetUnfolderBase]: For 103825/103825 co-relation queries the response was YES. [2024-06-27 23:41:24,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7089 conditions, 937 events. 523/937 cut-off events. For 103825/103825 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 4630 event pairs, 99 based on Foata normal form. 1/936 useless extension candidates. Maximal degree in co-relation 6960. Up to 798 conditions per place. [2024-06-27 23:41:24,502 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 199 selfloop transitions, 60 changer transitions 0/261 dead transitions. [2024-06-27 23:41:24,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 261 transitions, 3372 flow [2024-06-27 23:41:24,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:41:24,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:41:24,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-27 23:41:24,503 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3782991202346041 [2024-06-27 23:41:24,503 INFO L175 Difference]: Start difference. First operand has 281 places, 243 transitions, 2390 flow. Second operand 11 states and 129 transitions. [2024-06-27 23:41:24,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 261 transitions, 3372 flow [2024-06-27 23:41:24,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 261 transitions, 3274 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-27 23:41:24,851 INFO L231 Difference]: Finished difference. Result has 284 places, 249 transitions, 2551 flow [2024-06-27 23:41:24,851 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2292, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2551, PETRI_PLACES=284, PETRI_TRANSITIONS=249} [2024-06-27 23:41:24,851 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 254 predicate places. [2024-06-27 23:41:24,851 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 249 transitions, 2551 flow [2024-06-27 23:41:24,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:41:24,852 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:41:24,852 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:41:24,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-27 23:41:24,852 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:41:24,852 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:41:24,852 INFO L85 PathProgramCache]: Analyzing trace with hash 763524820, now seen corresponding path program 7 times [2024-06-27 23:41:24,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:41:24,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753711457] [2024-06-27 23:41:24,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:41:24,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:41:24,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:41:26,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:41:26,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:41:26,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753711457] [2024-06-27 23:41:26,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753711457] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:41:26,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:41:26,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:41:26,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421218588] [2024-06-27 23:41:26,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:41:26,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:41:26,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:41:26,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:41:26,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:41:26,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:41:26,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 249 transitions, 2551 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:41:26,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:41:26,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:41:26,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:41:26,678 INFO L124 PetriNetUnfolderBase]: 526/942 cut-off events. [2024-06-27 23:41:26,678 INFO L125 PetriNetUnfolderBase]: For 106411/106411 co-relation queries the response was YES. [2024-06-27 23:41:26,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7277 conditions, 942 events. 526/942 cut-off events. For 106411/106411 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 4684 event pairs, 98 based on Foata normal form. 1/941 useless extension candidates. Maximal degree in co-relation 7146. Up to 822 conditions per place. [2024-06-27 23:41:26,689 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 206 selfloop transitions, 53 changer transitions 0/261 dead transitions. [2024-06-27 23:41:26,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 261 transitions, 3133 flow [2024-06-27 23:41:26,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:41:26,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:41:26,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-27 23:41:26,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38064516129032255 [2024-06-27 23:41:26,693 INFO L175 Difference]: Start difference. First operand has 284 places, 249 transitions, 2551 flow. Second operand 10 states and 118 transitions. [2024-06-27 23:41:26,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 261 transitions, 3133 flow [2024-06-27 23:41:27,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 261 transitions, 3032 flow, removed 31 selfloop flow, removed 6 redundant places. [2024-06-27 23:41:27,015 INFO L231 Difference]: Finished difference. Result has 288 places, 251 transitions, 2605 flow [2024-06-27 23:41:27,016 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2464, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2605, PETRI_PLACES=288, PETRI_TRANSITIONS=251} [2024-06-27 23:41:27,016 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 258 predicate places. [2024-06-27 23:41:27,016 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 251 transitions, 2605 flow [2024-06-27 23:41:27,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:41:27,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:41:27,016 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:41:27,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-27 23:41:27,017 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:41:27,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:41:27,017 INFO L85 PathProgramCache]: Analyzing trace with hash 758008835, now seen corresponding path program 9 times [2024-06-27 23:41:27,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:41:27,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665475815] [2024-06-27 23:41:27,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:41:27,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:41:27,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:41:28,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:41:28,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:41:28,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665475815] [2024-06-27 23:41:28,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665475815] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:41:28,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:41:28,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:41:28,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522622297] [2024-06-27 23:41:28,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:41:28,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:41:28,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:41:28,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:41:28,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:41:28,725 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:41:28,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 251 transitions, 2605 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:41:28,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:41:28,725 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:41:28,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:41:29,015 INFO L124 PetriNetUnfolderBase]: 537/963 cut-off events. [2024-06-27 23:41:29,015 INFO L125 PetriNetUnfolderBase]: For 120913/120913 co-relation queries the response was YES. [2024-06-27 23:41:29,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7700 conditions, 963 events. 537/963 cut-off events. For 120913/120913 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 4797 event pairs, 96 based on Foata normal form. 2/963 useless extension candidates. Maximal degree in co-relation 7568. Up to 844 conditions per place. [2024-06-27 23:41:29,025 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 221 selfloop transitions, 43 changer transitions 0/266 dead transitions. [2024-06-27 23:41:29,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 266 transitions, 3401 flow [2024-06-27 23:41:29,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:41:29,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:41:29,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-27 23:41:29,040 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38064516129032255 [2024-06-27 23:41:29,040 INFO L175 Difference]: Start difference. First operand has 288 places, 251 transitions, 2605 flow. Second operand 10 states and 118 transitions. [2024-06-27 23:41:29,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 266 transitions, 3401 flow [2024-06-27 23:41:29,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 266 transitions, 3280 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-27 23:41:29,412 INFO L231 Difference]: Finished difference. Result has 290 places, 253 transitions, 2640 flow [2024-06-27 23:41:29,412 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2484, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2640, PETRI_PLACES=290, PETRI_TRANSITIONS=253} [2024-06-27 23:41:29,412 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 260 predicate places. [2024-06-27 23:41:29,412 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 253 transitions, 2640 flow [2024-06-27 23:41:29,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:41:29,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:41:29,413 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:41:29,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-27 23:41:29,413 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:41:29,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:41:29,413 INFO L85 PathProgramCache]: Analyzing trace with hash -2017072367, now seen corresponding path program 10 times [2024-06-27 23:41:29,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:41:29,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852730796] [2024-06-27 23:41:29,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:41:29,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:41:29,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:41:31,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:41:31,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:41:31,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852730796] [2024-06-27 23:41:31,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852730796] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:41:31,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:41:31,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:41:31,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707353919] [2024-06-27 23:41:31,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:41:31,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:41:31,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:41:31,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:41:31,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:41:31,334 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:41:31,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 253 transitions, 2640 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:41:31,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:41:31,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:41:31,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:41:31,662 INFO L124 PetriNetUnfolderBase]: 534/958 cut-off events. [2024-06-27 23:41:31,663 INFO L125 PetriNetUnfolderBase]: For 115913/115913 co-relation queries the response was YES. [2024-06-27 23:41:31,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7498 conditions, 958 events. 534/958 cut-off events. For 115913/115913 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 4772 event pairs, 97 based on Foata normal form. 2/958 useless extension candidates. Maximal degree in co-relation 7365. Up to 868 conditions per place. [2024-06-27 23:41:31,674 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 222 selfloop transitions, 40 changer transitions 0/264 dead transitions. [2024-06-27 23:41:31,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 264 transitions, 3190 flow [2024-06-27 23:41:31,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:41:31,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:41:31,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-27 23:41:31,675 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35777126099706746 [2024-06-27 23:41:31,675 INFO L175 Difference]: Start difference. First operand has 290 places, 253 transitions, 2640 flow. Second operand 11 states and 122 transitions. [2024-06-27 23:41:31,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 264 transitions, 3190 flow [2024-06-27 23:41:32,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 264 transitions, 3084 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-06-27 23:41:32,006 INFO L231 Difference]: Finished difference. Result has 295 places, 253 transitions, 2618 flow [2024-06-27 23:41:32,007 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2534, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2618, PETRI_PLACES=295, PETRI_TRANSITIONS=253} [2024-06-27 23:41:32,007 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 265 predicate places. [2024-06-27 23:41:32,007 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 253 transitions, 2618 flow [2024-06-27 23:41:32,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:41:32,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:41:32,007 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:41:32,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-27 23:41:32,008 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:41:32,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:41:32,008 INFO L85 PathProgramCache]: Analyzing trace with hash -2017072212, now seen corresponding path program 8 times [2024-06-27 23:41:32,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:41:32,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575640688] [2024-06-27 23:41:32,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:41:32,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:41:32,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:41:33,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:41:33,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:41:33,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575640688] [2024-06-27 23:41:33,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575640688] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:41:33,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:41:33,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:41:33,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397584987] [2024-06-27 23:41:33,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:41:33,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:41:33,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:41:33,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:41:33,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:41:33,622 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:41:33,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 253 transitions, 2618 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:41:33,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:41:33,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:41:33,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:41:33,942 INFO L124 PetriNetUnfolderBase]: 537/963 cut-off events. [2024-06-27 23:41:33,942 INFO L125 PetriNetUnfolderBase]: For 113729/113729 co-relation queries the response was YES. [2024-06-27 23:41:33,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7522 conditions, 963 events. 537/963 cut-off events. For 113729/113729 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 4812 event pairs, 98 based on Foata normal form. 1/962 useless extension candidates. Maximal degree in co-relation 7387. Up to 814 conditions per place. [2024-06-27 23:41:33,951 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 198 selfloop transitions, 66 changer transitions 0/266 dead transitions. [2024-06-27 23:41:33,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 266 transitions, 3390 flow [2024-06-27 23:41:33,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:41:33,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:41:33,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-27 23:41:33,953 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375366568914956 [2024-06-27 23:41:33,953 INFO L175 Difference]: Start difference. First operand has 295 places, 253 transitions, 2618 flow. Second operand 11 states and 128 transitions. [2024-06-27 23:41:33,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 266 transitions, 3390 flow [2024-06-27 23:41:34,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 266 transitions, 3300 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-27 23:41:34,304 INFO L231 Difference]: Finished difference. Result has 296 places, 255 transitions, 2709 flow [2024-06-27 23:41:34,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2528, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2709, PETRI_PLACES=296, PETRI_TRANSITIONS=255} [2024-06-27 23:41:34,305 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 266 predicate places. [2024-06-27 23:41:34,305 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 255 transitions, 2709 flow [2024-06-27 23:41:34,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:41:34,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:41:34,305 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:41:34,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-27 23:41:34,305 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:41:34,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:41:34,306 INFO L85 PathProgramCache]: Analyzing trace with hash -2011358292, now seen corresponding path program 9 times [2024-06-27 23:41:34,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:41:34,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506762064] [2024-06-27 23:41:34,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:41:34,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:41:34,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:41:35,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:41:35,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:41:35,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506762064] [2024-06-27 23:41:35,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506762064] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:41:35,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:41:35,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:41:35,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791246355] [2024-06-27 23:41:35,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:41:35,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:41:35,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:41:35,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:41:35,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:41:35,695 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:41:35,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 255 transitions, 2709 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:41:35,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:41:35,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:41:35,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:41:35,975 INFO L124 PetriNetUnfolderBase]: 535/960 cut-off events. [2024-06-27 23:41:35,975 INFO L125 PetriNetUnfolderBase]: For 112307/112307 co-relation queries the response was YES. [2024-06-27 23:41:35,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7507 conditions, 960 events. 535/960 cut-off events. For 112307/112307 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 4792 event pairs, 98 based on Foata normal form. 1/959 useless extension candidates. Maximal degree in co-relation 7371. Up to 840 conditions per place. [2024-06-27 23:41:35,984 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 208 selfloop transitions, 55 changer transitions 0/265 dead transitions. [2024-06-27 23:41:35,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 265 transitions, 3259 flow [2024-06-27 23:41:35,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:41:35,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:41:35,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-27 23:41:35,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3774193548387097 [2024-06-27 23:41:35,985 INFO L175 Difference]: Start difference. First operand has 296 places, 255 transitions, 2709 flow. Second operand 10 states and 117 transitions. [2024-06-27 23:41:35,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 265 transitions, 3259 flow [2024-06-27 23:41:36,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 265 transitions, 3080 flow, removed 25 selfloop flow, removed 9 redundant places. [2024-06-27 23:41:36,324 INFO L231 Difference]: Finished difference. Result has 297 places, 255 transitions, 2645 flow [2024-06-27 23:41:36,324 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2530, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2645, PETRI_PLACES=297, PETRI_TRANSITIONS=255} [2024-06-27 23:41:36,324 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 267 predicate places. [2024-06-27 23:41:36,324 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 255 transitions, 2645 flow [2024-06-27 23:41:36,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:41:36,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:41:36,324 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:41:36,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-27 23:41:36,325 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:41:36,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:41:36,325 INFO L85 PathProgramCache]: Analyzing trace with hash -2016922265, now seen corresponding path program 1 times [2024-06-27 23:41:36,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:41:36,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649792125] [2024-06-27 23:41:36,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:41:36,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:41:36,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:41:37,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:41:37,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:41:37,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649792125] [2024-06-27 23:41:37,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649792125] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:41:37,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:41:37,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:41:37,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686051293] [2024-06-27 23:41:37,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:41:37,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:41:37,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:41:37,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:41:37,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:41:37,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:41:37,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 255 transitions, 2645 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:41:37,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:41:37,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:41:37,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:41:38,242 INFO L124 PetriNetUnfolderBase]: 561/1002 cut-off events. [2024-06-27 23:41:38,242 INFO L125 PetriNetUnfolderBase]: For 135413/135413 co-relation queries the response was YES. [2024-06-27 23:41:38,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8114 conditions, 1002 events. 561/1002 cut-off events. For 135413/135413 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 5022 event pairs, 103 based on Foata normal form. 2/1002 useless extension candidates. Maximal degree in co-relation 7977. Up to 783 conditions per place. [2024-06-27 23:41:38,252 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 222 selfloop transitions, 53 changer transitions 0/277 dead transitions. [2024-06-27 23:41:38,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 277 transitions, 3709 flow [2024-06-27 23:41:38,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:41:38,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:41:38,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-27 23:41:38,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39589442815249265 [2024-06-27 23:41:38,254 INFO L175 Difference]: Start difference. First operand has 297 places, 255 transitions, 2645 flow. Second operand 11 states and 135 transitions. [2024-06-27 23:41:38,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 277 transitions, 3709 flow [2024-06-27 23:41:38,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 277 transitions, 3585 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-27 23:41:38,662 INFO L231 Difference]: Finished difference. Result has 299 places, 261 transitions, 2726 flow [2024-06-27 23:41:38,662 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2521, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2726, PETRI_PLACES=299, PETRI_TRANSITIONS=261} [2024-06-27 23:41:38,662 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 269 predicate places. [2024-06-27 23:41:38,663 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 261 transitions, 2726 flow [2024-06-27 23:41:38,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:41:38,663 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:41:38,663 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:41:38,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-27 23:41:38,663 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:41:38,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:41:38,664 INFO L85 PathProgramCache]: Analyzing trace with hash -2011559885, now seen corresponding path program 2 times [2024-06-27 23:41:38,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:41:38,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359566797] [2024-06-27 23:41:38,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:41:38,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:41:38,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:41:40,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:41:40,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:41:40,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359566797] [2024-06-27 23:41:40,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359566797] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:41:40,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:41:40,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:41:40,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225001541] [2024-06-27 23:41:40,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:41:40,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:41:40,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:41:40,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:41:40,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:41:40,089 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:41:40,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 261 transitions, 2726 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:41:40,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:41:40,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:41:40,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:41:40,543 INFO L124 PetriNetUnfolderBase]: 567/1012 cut-off events. [2024-06-27 23:41:40,543 INFO L125 PetriNetUnfolderBase]: For 138800/138800 co-relation queries the response was YES. [2024-06-27 23:41:40,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8253 conditions, 1012 events. 567/1012 cut-off events. For 138800/138800 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 5092 event pairs, 100 based on Foata normal form. 2/1012 useless extension candidates. Maximal degree in co-relation 8115. Up to 789 conditions per place. [2024-06-27 23:41:40,551 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 221 selfloop transitions, 56 changer transitions 0/279 dead transitions. [2024-06-27 23:41:40,551 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 279 transitions, 3742 flow [2024-06-27 23:41:40,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:41:40,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:41:40,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-27 23:41:40,553 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39296187683284456 [2024-06-27 23:41:40,553 INFO L175 Difference]: Start difference. First operand has 299 places, 261 transitions, 2726 flow. Second operand 11 states and 134 transitions. [2024-06-27 23:41:40,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 279 transitions, 3742 flow [2024-06-27 23:41:40,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 279 transitions, 3686 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-27 23:41:40,936 INFO L231 Difference]: Finished difference. Result has 304 places, 263 transitions, 2821 flow [2024-06-27 23:41:40,937 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2672, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2821, PETRI_PLACES=304, PETRI_TRANSITIONS=263} [2024-06-27 23:41:40,937 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 274 predicate places. [2024-06-27 23:41:40,937 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 263 transitions, 2821 flow [2024-06-27 23:41:40,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:41:40,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:41:40,937 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:41:40,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-27 23:41:40,938 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:41:40,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:41:40,938 INFO L85 PathProgramCache]: Analyzing trace with hash -2016922482, now seen corresponding path program 10 times [2024-06-27 23:41:40,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:41:40,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364422242] [2024-06-27 23:41:40,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:41:40,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:41:40,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:41:42,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:41:42,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:41:42,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364422242] [2024-06-27 23:41:42,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364422242] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:41:42,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:41:42,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:41:42,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252370367] [2024-06-27 23:41:42,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:41:42,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:41:42,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:41:42,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:41:42,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:41:42,349 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:41:42,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 263 transitions, 2821 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:41:42,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:41:42,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:41:42,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:41:42,805 INFO L124 PetriNetUnfolderBase]: 565/1009 cut-off events. [2024-06-27 23:41:42,806 INFO L125 PetriNetUnfolderBase]: For 133247/133247 co-relation queries the response was YES. [2024-06-27 23:41:42,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8258 conditions, 1009 events. 565/1009 cut-off events. For 133247/133247 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 5074 event pairs, 102 based on Foata normal form. 1/1008 useless extension candidates. Maximal degree in co-relation 8118. Up to 889 conditions per place. [2024-06-27 23:41:42,820 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 219 selfloop transitions, 52 changer transitions 0/273 dead transitions. [2024-06-27 23:41:42,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 273 transitions, 3387 flow [2024-06-27 23:41:42,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:41:42,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:41:42,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-27 23:41:42,821 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38387096774193546 [2024-06-27 23:41:42,821 INFO L175 Difference]: Start difference. First operand has 304 places, 263 transitions, 2821 flow. Second operand 10 states and 119 transitions. [2024-06-27 23:41:42,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 273 transitions, 3387 flow [2024-06-27 23:41:43,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 273 transitions, 3239 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-27 23:41:43,272 INFO L231 Difference]: Finished difference. Result has 305 places, 263 transitions, 2782 flow [2024-06-27 23:41:43,272 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2673, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2782, PETRI_PLACES=305, PETRI_TRANSITIONS=263} [2024-06-27 23:41:43,273 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 275 predicate places. [2024-06-27 23:41:43,273 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 263 transitions, 2782 flow [2024-06-27 23:41:43,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:41:43,273 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:41:43,273 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:41:43,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-27 23:41:43,273 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:41:43,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:41:43,274 INFO L85 PathProgramCache]: Analyzing trace with hash -2011350635, now seen corresponding path program 3 times [2024-06-27 23:41:43,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:41:43,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85908690] [2024-06-27 23:41:43,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:41:43,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:41:43,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:41:44,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:41:44,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:41:44,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85908690] [2024-06-27 23:41:44,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85908690] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:41:44,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:41:44,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:41:44,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345426873] [2024-06-27 23:41:44,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:41:44,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:41:44,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:41:44,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:41:44,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:41:44,977 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:41:44,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 263 transitions, 2782 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:41:44,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:41:44,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:41:44,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:41:45,331 INFO L124 PetriNetUnfolderBase]: 568/1014 cut-off events. [2024-06-27 23:41:45,331 INFO L125 PetriNetUnfolderBase]: For 135832/135832 co-relation queries the response was YES. [2024-06-27 23:41:45,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8250 conditions, 1014 events. 568/1014 cut-off events. For 135832/135832 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 5100 event pairs, 99 based on Foata normal form. 1/1013 useless extension candidates. Maximal degree in co-relation 8109. Up to 868 conditions per place. [2024-06-27 23:41:45,341 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 217 selfloop transitions, 64 changer transitions 0/283 dead transitions. [2024-06-27 23:41:45,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 283 transitions, 3840 flow [2024-06-27 23:41:45,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:41:45,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:41:45,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-27 23:41:45,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3935483870967742 [2024-06-27 23:41:45,343 INFO L175 Difference]: Start difference. First operand has 305 places, 263 transitions, 2782 flow. Second operand 10 states and 122 transitions. [2024-06-27 23:41:45,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 283 transitions, 3840 flow [2024-06-27 23:41:45,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 283 transitions, 3729 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-27 23:41:45,837 INFO L231 Difference]: Finished difference. Result has 307 places, 271 transitions, 2919 flow [2024-06-27 23:41:45,837 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2671, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2919, PETRI_PLACES=307, PETRI_TRANSITIONS=271} [2024-06-27 23:41:45,838 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 277 predicate places. [2024-06-27 23:41:45,838 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 271 transitions, 2919 flow [2024-06-27 23:41:45,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:41:45,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:41:45,838 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:41:45,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-27 23:41:45,839 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:41:45,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:41:45,839 INFO L85 PathProgramCache]: Analyzing trace with hash -2011358075, now seen corresponding path program 4 times [2024-06-27 23:41:45,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:41:45,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210740566] [2024-06-27 23:41:45,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:41:45,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:41:45,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:41:47,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:41:47,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:41:47,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210740566] [2024-06-27 23:41:47,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210740566] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:41:47,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:41:47,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:41:47,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289166787] [2024-06-27 23:41:47,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:41:47,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:41:47,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:41:47,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:41:47,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:41:47,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:41:47,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 271 transitions, 2919 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:41:47,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:41:47,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:41:47,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:41:47,797 INFO L124 PetriNetUnfolderBase]: 569/1016 cut-off events. [2024-06-27 23:41:47,797 INFO L125 PetriNetUnfolderBase]: For 138745/138745 co-relation queries the response was YES. [2024-06-27 23:41:47,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8293 conditions, 1016 events. 569/1016 cut-off events. For 138745/138745 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 5102 event pairs, 100 based on Foata normal form. 2/1016 useless extension candidates. Maximal degree in co-relation 8150. Up to 791 conditions per place. [2024-06-27 23:41:47,807 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 219 selfloop transitions, 66 changer transitions 0/287 dead transitions. [2024-06-27 23:41:47,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 287 transitions, 3952 flow [2024-06-27 23:41:47,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:41:47,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:41:47,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-27 23:41:47,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39002932551319647 [2024-06-27 23:41:47,809 INFO L175 Difference]: Start difference. First operand has 307 places, 271 transitions, 2919 flow. Second operand 11 states and 133 transitions. [2024-06-27 23:41:47,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 287 transitions, 3952 flow [2024-06-27 23:41:48,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 287 transitions, 3820 flow, removed 30 selfloop flow, removed 6 redundant places. [2024-06-27 23:41:48,279 INFO L231 Difference]: Finished difference. Result has 312 places, 273 transitions, 2965 flow [2024-06-27 23:41:48,279 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2793, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2965, PETRI_PLACES=312, PETRI_TRANSITIONS=273} [2024-06-27 23:41:48,280 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 282 predicate places. [2024-06-27 23:41:48,280 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 273 transitions, 2965 flow [2024-06-27 23:41:48,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:41:48,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:41:48,280 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:41:48,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-27 23:41:48,280 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:41:48,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:41:48,281 INFO L85 PathProgramCache]: Analyzing trace with hash -226493479, now seen corresponding path program 5 times [2024-06-27 23:41:48,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:41:48,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254739355] [2024-06-27 23:41:48,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:41:48,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:41:48,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:41:49,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:41:49,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:41:49,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254739355] [2024-06-27 23:41:49,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254739355] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:41:49,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:41:49,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:41:49,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763384242] [2024-06-27 23:41:49,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:41:49,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:41:49,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:41:49,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:41:49,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:41:49,629 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:41:49,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 273 transitions, 2965 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:41:49,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:41:49,630 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:41:49,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:41:50,058 INFO L124 PetriNetUnfolderBase]: 574/1024 cut-off events. [2024-06-27 23:41:50,058 INFO L125 PetriNetUnfolderBase]: For 141847/141847 co-relation queries the response was YES. [2024-06-27 23:41:50,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8344 conditions, 1024 events. 574/1024 cut-off events. For 141847/141847 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 5159 event pairs, 100 based on Foata normal form. 3/1025 useless extension candidates. Maximal degree in co-relation 8199. Up to 974 conditions per place. [2024-06-27 23:41:50,069 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 260 selfloop transitions, 25 changer transitions 0/287 dead transitions. [2024-06-27 23:41:50,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 287 transitions, 3821 flow [2024-06-27 23:41:50,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:41:50,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:41:50,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-27 23:41:50,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34017595307917886 [2024-06-27 23:41:50,070 INFO L175 Difference]: Start difference. First operand has 312 places, 273 transitions, 2965 flow. Second operand 11 states and 116 transitions. [2024-06-27 23:41:50,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 287 transitions, 3821 flow [2024-06-27 23:41:50,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 287 transitions, 3636 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-27 23:41:50,519 INFO L231 Difference]: Finished difference. Result has 314 places, 277 transitions, 2920 flow [2024-06-27 23:41:50,519 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2784, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2920, PETRI_PLACES=314, PETRI_TRANSITIONS=277} [2024-06-27 23:41:50,519 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 284 predicate places. [2024-06-27 23:41:50,519 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 277 transitions, 2920 flow [2024-06-27 23:41:50,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:41:50,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:41:50,520 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:41:50,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-27 23:41:50,520 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:41:50,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:41:50,520 INFO L85 PathProgramCache]: Analyzing trace with hash 693922197, now seen corresponding path program 6 times [2024-06-27 23:41:50,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:41:50,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564441287] [2024-06-27 23:41:50,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:41:50,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:41:50,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:41:51,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:41:51,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:41:51,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564441287] [2024-06-27 23:41:51,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564441287] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:41:51,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:41:51,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:41:51,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128203788] [2024-06-27 23:41:51,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:41:51,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:41:51,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:41:51,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:41:51,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:41:52,081 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:41:52,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 277 transitions, 2920 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:41:52,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:41:52,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:41:52,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:41:52,460 INFO L124 PetriNetUnfolderBase]: 590/1050 cut-off events. [2024-06-27 23:41:52,461 INFO L125 PetriNetUnfolderBase]: For 149132/149132 co-relation queries the response was YES. [2024-06-27 23:41:52,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8680 conditions, 1050 events. 590/1050 cut-off events. For 149132/149132 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 5311 event pairs, 99 based on Foata normal form. 2/1050 useless extension candidates. Maximal degree in co-relation 8534. Up to 944 conditions per place. [2024-06-27 23:41:52,473 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 247 selfloop transitions, 44 changer transitions 0/293 dead transitions. [2024-06-27 23:41:52,474 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 293 transitions, 3814 flow [2024-06-27 23:41:52,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:41:52,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:41:52,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-27 23:41:52,475 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38387096774193546 [2024-06-27 23:41:52,475 INFO L175 Difference]: Start difference. First operand has 314 places, 277 transitions, 2920 flow. Second operand 10 states and 119 transitions. [2024-06-27 23:41:52,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 293 transitions, 3814 flow [2024-06-27 23:41:52,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 293 transitions, 3692 flow, removed 29 selfloop flow, removed 10 redundant places. [2024-06-27 23:41:52,978 INFO L231 Difference]: Finished difference. Result has 314 places, 281 transitions, 2971 flow [2024-06-27 23:41:52,978 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2798, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2971, PETRI_PLACES=314, PETRI_TRANSITIONS=281} [2024-06-27 23:41:52,978 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 284 predicate places. [2024-06-27 23:41:52,978 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 281 transitions, 2971 flow [2024-06-27 23:41:52,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:41:52,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:41:52,979 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:41:52,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-27 23:41:52,979 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:41:52,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:41:52,980 INFO L85 PathProgramCache]: Analyzing trace with hash 693914540, now seen corresponding path program 11 times [2024-06-27 23:41:52,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:41:52,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121832539] [2024-06-27 23:41:52,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:41:52,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:41:52,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:41:54,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:41:54,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:41:54,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121832539] [2024-06-27 23:41:54,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121832539] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:41:54,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:41:54,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:41:54,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943208385] [2024-06-27 23:41:54,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:41:54,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:41:54,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:41:54,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:41:54,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:41:54,786 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:41:54,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 281 transitions, 2971 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:41:54,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:41:54,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:41:54,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:41:55,191 INFO L124 PetriNetUnfolderBase]: 593/1055 cut-off events. [2024-06-27 23:41:55,191 INFO L125 PetriNetUnfolderBase]: For 147384/147384 co-relation queries the response was YES. [2024-06-27 23:41:55,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8693 conditions, 1055 events. 593/1055 cut-off events. For 147384/147384 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 5328 event pairs, 101 based on Foata normal form. 1/1054 useless extension candidates. Maximal degree in co-relation 8548. Up to 982 conditions per place. [2024-06-27 23:41:55,207 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 253 selfloop transitions, 37 changer transitions 0/292 dead transitions. [2024-06-27 23:41:55,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 292 transitions, 3615 flow [2024-06-27 23:41:55,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:41:55,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:41:55,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-27 23:41:55,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3489736070381232 [2024-06-27 23:41:55,209 INFO L175 Difference]: Start difference. First operand has 314 places, 281 transitions, 2971 flow. Second operand 11 states and 119 transitions. [2024-06-27 23:41:55,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 292 transitions, 3615 flow [2024-06-27 23:41:55,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 292 transitions, 3530 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-27 23:41:55,932 INFO L231 Difference]: Finished difference. Result has 320 places, 283 transitions, 3013 flow [2024-06-27 23:41:55,933 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2886, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3013, PETRI_PLACES=320, PETRI_TRANSITIONS=283} [2024-06-27 23:41:55,933 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 290 predicate places. [2024-06-27 23:41:55,933 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 283 transitions, 3013 flow [2024-06-27 23:41:55,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:41:55,933 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:41:55,934 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:41:55,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-27 23:41:55,934 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:41:55,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:41:55,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1724906857, now seen corresponding path program 7 times [2024-06-27 23:41:55,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:41:55,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150865798] [2024-06-27 23:41:55,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:41:55,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:41:55,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:41:57,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:41:57,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:41:57,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150865798] [2024-06-27 23:41:57,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150865798] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:41:57,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:41:57,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:41:57,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486842201] [2024-06-27 23:41:57,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:41:57,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:41:57,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:41:57,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:41:57,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:41:57,655 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:41:57,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 283 transitions, 3013 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:41:57,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:41:57,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:41:57,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:41:58,057 INFO L124 PetriNetUnfolderBase]: 609/1081 cut-off events. [2024-06-27 23:41:58,058 INFO L125 PetriNetUnfolderBase]: For 164940/164940 co-relation queries the response was YES. [2024-06-27 23:41:58,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9146 conditions, 1081 events. 609/1081 cut-off events. For 164940/164940 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 5474 event pairs, 100 based on Foata normal form. 2/1081 useless extension candidates. Maximal degree in co-relation 8998. Up to 921 conditions per place. [2024-06-27 23:41:58,069 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 256 selfloop transitions, 45 changer transitions 0/303 dead transitions. [2024-06-27 23:41:58,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 303 transitions, 4351 flow [2024-06-27 23:41:58,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:41:58,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:41:58,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-27 23:41:58,071 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3841642228739003 [2024-06-27 23:41:58,071 INFO L175 Difference]: Start difference. First operand has 320 places, 283 transitions, 3013 flow. Second operand 11 states and 131 transitions. [2024-06-27 23:41:58,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 303 transitions, 4351 flow [2024-06-27 23:41:58,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 303 transitions, 4240 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-27 23:41:58,609 INFO L231 Difference]: Finished difference. Result has 322 places, 287 transitions, 3073 flow [2024-06-27 23:41:58,609 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2902, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3073, PETRI_PLACES=322, PETRI_TRANSITIONS=287} [2024-06-27 23:41:58,610 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 292 predicate places. [2024-06-27 23:41:58,610 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 287 transitions, 3073 flow [2024-06-27 23:41:58,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:41:58,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:41:58,611 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:41:58,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-27 23:41:58,611 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:41:58,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:41:58,628 INFO L85 PathProgramCache]: Analyzing trace with hash -574583675, now seen corresponding path program 8 times [2024-06-27 23:41:58,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:41:58,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659222698] [2024-06-27 23:41:58,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:41:58,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:41:58,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:41:59,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:41:59,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:41:59,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659222698] [2024-06-27 23:41:59,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659222698] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:41:59,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:41:59,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:41:59,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595552289] [2024-06-27 23:41:59,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:41:59,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:41:59,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:41:59,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:41:59,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:42:00,070 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:42:00,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 287 transitions, 3073 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:42:00,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:42:00,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:42:00,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:42:00,589 INFO L124 PetriNetUnfolderBase]: 625/1107 cut-off events. [2024-06-27 23:42:00,589 INFO L125 PetriNetUnfolderBase]: For 179018/179018 co-relation queries the response was YES. [2024-06-27 23:42:00,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9628 conditions, 1107 events. 625/1107 cut-off events. For 179018/179018 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 5620 event pairs, 102 based on Foata normal form. 2/1107 useless extension candidates. Maximal degree in co-relation 9479. Up to 1037 conditions per place. [2024-06-27 23:42:00,602 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 275 selfloop transitions, 28 changer transitions 0/305 dead transitions. [2024-06-27 23:42:00,602 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 305 transitions, 4225 flow [2024-06-27 23:42:00,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:42:00,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:42:00,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-27 23:42:00,603 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3519061583577713 [2024-06-27 23:42:00,603 INFO L175 Difference]: Start difference. First operand has 322 places, 287 transitions, 3073 flow. Second operand 11 states and 120 transitions. [2024-06-27 23:42:00,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 305 transitions, 4225 flow [2024-06-27 23:42:01,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 305 transitions, 4101 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-27 23:42:01,184 INFO L231 Difference]: Finished difference. Result has 325 places, 291 transitions, 3106 flow [2024-06-27 23:42:01,184 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2957, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3106, PETRI_PLACES=325, PETRI_TRANSITIONS=291} [2024-06-27 23:42:01,184 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 295 predicate places. [2024-06-27 23:42:01,184 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 291 transitions, 3106 flow [2024-06-27 23:42:01,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:42:01,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:42:01,185 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:42:01,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-27 23:42:01,185 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:42:01,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:42:01,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1101936366, now seen corresponding path program 12 times [2024-06-27 23:42:01,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:42:01,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064666381] [2024-06-27 23:42:01,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:42:01,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:42:01,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:42:02,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:42:02,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:42:02,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064666381] [2024-06-27 23:42:02,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064666381] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:42:02,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:42:02,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:42:02,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292935413] [2024-06-27 23:42:02,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:42:02,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:42:02,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:42:02,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:42:02,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:42:02,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:42:02,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 291 transitions, 3106 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:42:02,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:42:02,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:42:02,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:42:03,086 INFO L124 PetriNetUnfolderBase]: 628/1112 cut-off events. [2024-06-27 23:42:03,087 INFO L125 PetriNetUnfolderBase]: For 177028/177028 co-relation queries the response was YES. [2024-06-27 23:42:03,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9641 conditions, 1112 events. 628/1112 cut-off events. For 177028/177028 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 5658 event pairs, 105 based on Foata normal form. 1/1111 useless extension candidates. Maximal degree in co-relation 9492. Up to 1081 conditions per place. [2024-06-27 23:42:03,096 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 282 selfloop transitions, 18 changer transitions 0/302 dead transitions. [2024-06-27 23:42:03,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 302 transitions, 3774 flow [2024-06-27 23:42:03,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:42:03,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:42:03,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-27 23:42:03,097 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3419354838709677 [2024-06-27 23:42:03,098 INFO L175 Difference]: Start difference. First operand has 325 places, 291 transitions, 3106 flow. Second operand 10 states and 106 transitions. [2024-06-27 23:42:03,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 302 transitions, 3774 flow [2024-06-27 23:42:03,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 302 transitions, 3690 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-27 23:42:03,740 INFO L231 Difference]: Finished difference. Result has 328 places, 293 transitions, 3115 flow [2024-06-27 23:42:03,741 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3022, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3115, PETRI_PLACES=328, PETRI_TRANSITIONS=293} [2024-06-27 23:42:03,741 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 298 predicate places. [2024-06-27 23:42:03,741 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 293 transitions, 3115 flow [2024-06-27 23:42:03,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:42:03,741 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:42:03,741 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:42:03,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-27 23:42:03,742 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:42:03,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:42:03,742 INFO L85 PathProgramCache]: Analyzing trace with hash 166562283, now seen corresponding path program 9 times [2024-06-27 23:42:03,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:42:03,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184152286] [2024-06-27 23:42:03,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:42:03,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:42:03,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:42:05,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:42:05,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:42:05,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184152286] [2024-06-27 23:42:05,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184152286] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:42:05,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:42:05,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:42:05,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204786313] [2024-06-27 23:42:05,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:42:05,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:42:05,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:42:05,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:42:05,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:42:05,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:42:05,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 293 transitions, 3115 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:42:05,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:42:05,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:42:05,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:42:05,747 INFO L124 PetriNetUnfolderBase]: 624/1106 cut-off events. [2024-06-27 23:42:05,747 INFO L125 PetriNetUnfolderBase]: For 174776/174776 co-relation queries the response was YES. [2024-06-27 23:42:05,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9411 conditions, 1106 events. 624/1106 cut-off events. For 174776/174776 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 5624 event pairs, 102 based on Foata normal form. 2/1106 useless extension candidates. Maximal degree in co-relation 9260. Up to 938 conditions per place. [2024-06-27 23:42:05,759 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 256 selfloop transitions, 50 changer transitions 0/308 dead transitions. [2024-06-27 23:42:05,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 308 transitions, 4199 flow [2024-06-27 23:42:05,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:42:05,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:42:05,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-27 23:42:05,760 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3782991202346041 [2024-06-27 23:42:05,761 INFO L175 Difference]: Start difference. First operand has 328 places, 293 transitions, 3115 flow. Second operand 11 states and 129 transitions. [2024-06-27 23:42:05,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 308 transitions, 4199 flow [2024-06-27 23:42:06,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 308 transitions, 4102 flow, removed 32 selfloop flow, removed 8 redundant places. [2024-06-27 23:42:06,318 INFO L231 Difference]: Finished difference. Result has 331 places, 293 transitions, 3123 flow [2024-06-27 23:42:06,318 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3018, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3123, PETRI_PLACES=331, PETRI_TRANSITIONS=293} [2024-06-27 23:42:06,319 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 301 predicate places. [2024-06-27 23:42:06,319 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 293 transitions, 3123 flow [2024-06-27 23:42:06,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:42:06,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:42:06,319 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:42:06,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-27 23:42:06,319 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:42:06,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:42:06,320 INFO L85 PathProgramCache]: Analyzing trace with hash 166360256, now seen corresponding path program 13 times [2024-06-27 23:42:06,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:42:06,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698035884] [2024-06-27 23:42:06,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:42:06,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:42:06,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:42:07,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:42:07,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:42:07,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698035884] [2024-06-27 23:42:07,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698035884] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:42:07,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:42:07,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:42:07,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921522139] [2024-06-27 23:42:07,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:42:07,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:42:07,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:42:07,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:42:07,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:42:07,836 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:42:07,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 293 transitions, 3123 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:42:07,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:42:07,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:42:07,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:42:08,305 INFO L124 PetriNetUnfolderBase]: 627/1111 cut-off events. [2024-06-27 23:42:08,305 INFO L125 PetriNetUnfolderBase]: For 173271/173271 co-relation queries the response was YES. [2024-06-27 23:42:08,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9523 conditions, 1111 events. 627/1111 cut-off events. For 173271/173271 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 5663 event pairs, 104 based on Foata normal form. 1/1110 useless extension candidates. Maximal degree in co-relation 9371. Up to 1038 conditions per place. [2024-06-27 23:42:08,317 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 266 selfloop transitions, 36 changer transitions 0/304 dead transitions. [2024-06-27 23:42:08,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 304 transitions, 3799 flow [2024-06-27 23:42:08,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:42:08,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:42:08,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-27 23:42:08,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3519061583577713 [2024-06-27 23:42:08,318 INFO L175 Difference]: Start difference. First operand has 331 places, 293 transitions, 3123 flow. Second operand 11 states and 120 transitions. [2024-06-27 23:42:08,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 304 transitions, 3799 flow [2024-06-27 23:42:08,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 304 transitions, 3704 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-27 23:42:08,932 INFO L231 Difference]: Finished difference. Result has 333 places, 295 transitions, 3161 flow [2024-06-27 23:42:08,932 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3028, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3161, PETRI_PLACES=333, PETRI_TRANSITIONS=295} [2024-06-27 23:42:08,932 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 303 predicate places. [2024-06-27 23:42:08,932 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 295 transitions, 3161 flow [2024-06-27 23:42:08,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:42:08,933 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:42:08,933 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:42:08,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-27 23:42:08,933 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:42:08,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:42:08,933 INFO L85 PathProgramCache]: Analyzing trace with hash 688344770, now seen corresponding path program 14 times [2024-06-27 23:42:08,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:42:08,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287357413] [2024-06-27 23:42:08,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:42:08,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:42:08,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:42:10,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:42:10,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:42:10,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287357413] [2024-06-27 23:42:10,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287357413] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:42:10,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:42:10,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:42:10,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760995190] [2024-06-27 23:42:10,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:42:10,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:42:10,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:42:10,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:42:10,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:42:10,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:42:10,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 295 transitions, 3161 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:42:10,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:42:10,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:42:10,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:42:10,890 INFO L124 PetriNetUnfolderBase]: 635/1124 cut-off events. [2024-06-27 23:42:10,890 INFO L125 PetriNetUnfolderBase]: For 182294/182294 co-relation queries the response was YES. [2024-06-27 23:42:10,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9787 conditions, 1124 events. 635/1124 cut-off events. For 182294/182294 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 5738 event pairs, 104 based on Foata normal form. 1/1123 useless extension candidates. Maximal degree in co-relation 9634. Up to 1044 conditions per place. [2024-06-27 23:42:10,904 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 265 selfloop transitions, 42 changer transitions 0/309 dead transitions. [2024-06-27 23:42:10,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 309 transitions, 4117 flow [2024-06-27 23:42:10,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:42:10,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:42:10,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-27 23:42:10,906 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-27 23:42:10,906 INFO L175 Difference]: Start difference. First operand has 333 places, 295 transitions, 3161 flow. Second operand 11 states and 121 transitions. [2024-06-27 23:42:10,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 309 transitions, 4117 flow [2024-06-27 23:42:11,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 309 transitions, 4000 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-27 23:42:11,528 INFO L231 Difference]: Finished difference. Result has 335 places, 299 transitions, 3249 flow [2024-06-27 23:42:11,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3044, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3249, PETRI_PLACES=335, PETRI_TRANSITIONS=299} [2024-06-27 23:42:11,528 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 305 predicate places. [2024-06-27 23:42:11,528 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 299 transitions, 3249 flow [2024-06-27 23:42:11,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:42:11,528 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:42:11,528 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:42:11,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-27 23:42:11,529 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:42:11,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:42:11,529 INFO L85 PathProgramCache]: Analyzing trace with hash -574576235, now seen corresponding path program 10 times [2024-06-27 23:42:11,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:42:11,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374427148] [2024-06-27 23:42:11,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:42:11,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:42:11,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:42:13,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:42:13,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:42:13,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374427148] [2024-06-27 23:42:13,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374427148] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:42:13,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:42:13,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:42:13,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923305762] [2024-06-27 23:42:13,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:42:13,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:42:13,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:42:13,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:42:13,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:42:13,138 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:42:13,138 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 299 transitions, 3249 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:42:13,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:42:13,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:42:13,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:42:13,677 INFO L124 PetriNetUnfolderBase]: 631/1118 cut-off events. [2024-06-27 23:42:13,677 INFO L125 PetriNetUnfolderBase]: For 180241/180241 co-relation queries the response was YES. [2024-06-27 23:42:13,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9559 conditions, 1118 events. 631/1118 cut-off events. For 180241/180241 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 5713 event pairs, 101 based on Foata normal form. 2/1118 useless extension candidates. Maximal degree in co-relation 9405. Up to 1051 conditions per place. [2024-06-27 23:42:13,691 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 283 selfloop transitions, 26 changer transitions 0/311 dead transitions. [2024-06-27 23:42:13,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 311 transitions, 4119 flow [2024-06-27 23:42:13,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:42:13,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:42:13,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-27 23:42:13,692 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3519061583577713 [2024-06-27 23:42:13,692 INFO L175 Difference]: Start difference. First operand has 335 places, 299 transitions, 3249 flow. Second operand 11 states and 120 transitions. [2024-06-27 23:42:13,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 311 transitions, 4119 flow [2024-06-27 23:42:14,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 311 transitions, 3984 flow, removed 43 selfloop flow, removed 7 redundant places. [2024-06-27 23:42:14,269 INFO L231 Difference]: Finished difference. Result has 339 places, 299 transitions, 3171 flow [2024-06-27 23:42:14,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3114, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3171, PETRI_PLACES=339, PETRI_TRANSITIONS=299} [2024-06-27 23:42:14,270 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 309 predicate places. [2024-06-27 23:42:14,270 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 299 transitions, 3171 flow [2024-06-27 23:42:14,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:42:14,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:42:14,270 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:42:14,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-27 23:42:14,270 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:42:14,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:42:14,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1092731660, now seen corresponding path program 1 times [2024-06-27 23:42:14,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:42:14,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002156336] [2024-06-27 23:42:14,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:42:14,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:42:14,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:42:15,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:42:15,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:42:15,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002156336] [2024-06-27 23:42:15,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002156336] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:42:15,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:42:15,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:42:15,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211347316] [2024-06-27 23:42:15,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:42:15,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:42:15,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:42:15,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:42:15,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:42:15,881 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:42:15,881 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 299 transitions, 3171 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:42:15,881 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:42:15,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:42:15,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:42:16,351 INFO L124 PetriNetUnfolderBase]: 628/1113 cut-off events. [2024-06-27 23:42:16,352 INFO L125 PetriNetUnfolderBase]: For 171924/171924 co-relation queries the response was YES. [2024-06-27 23:42:16,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9382 conditions, 1113 events. 628/1113 cut-off events. For 171924/171924 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 5689 event pairs, 103 based on Foata normal form. 1/1112 useless extension candidates. Maximal degree in co-relation 9226. Up to 1076 conditions per place. [2024-06-27 23:42:16,362 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 285 selfloop transitions, 20 changer transitions 0/307 dead transitions. [2024-06-27 23:42:16,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 307 transitions, 3799 flow [2024-06-27 23:42:16,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:42:16,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:42:16,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-27 23:42:16,363 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-27 23:42:16,363 INFO L175 Difference]: Start difference. First operand has 339 places, 299 transitions, 3171 flow. Second operand 10 states and 105 transitions. [2024-06-27 23:42:16,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 307 transitions, 3799 flow [2024-06-27 23:42:16,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 307 transitions, 3743 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-27 23:42:16,893 INFO L231 Difference]: Finished difference. Result has 342 places, 299 transitions, 3164 flow [2024-06-27 23:42:16,893 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3115, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3164, PETRI_PLACES=342, PETRI_TRANSITIONS=299} [2024-06-27 23:42:16,894 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 312 predicate places. [2024-06-27 23:42:16,894 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 299 transitions, 3164 flow [2024-06-27 23:42:16,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:42:16,894 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:42:16,894 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:42:16,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-27 23:42:16,894 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:42:16,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:42:16,895 INFO L85 PathProgramCache]: Analyzing trace with hash 688344615, now seen corresponding path program 11 times [2024-06-27 23:42:16,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:42:16,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082737938] [2024-06-27 23:42:16,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:42:16,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:42:16,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:42:18,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:42:18,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:42:18,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082737938] [2024-06-27 23:42:18,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082737938] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:42:18,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:42:18,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:42:18,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760524219] [2024-06-27 23:42:18,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:42:18,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:42:18,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:42:18,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:42:18,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:42:18,500 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:42:18,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 299 transitions, 3164 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:42:18,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:42:18,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:42:18,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:42:18,921 INFO L124 PetriNetUnfolderBase]: 632/1121 cut-off events. [2024-06-27 23:42:18,921 INFO L125 PetriNetUnfolderBase]: For 181168/181168 co-relation queries the response was YES. [2024-06-27 23:42:18,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9466 conditions, 1121 events. 632/1121 cut-off events. For 181168/181168 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 5746 event pairs, 105 based on Foata normal form. 2/1121 useless extension candidates. Maximal degree in co-relation 9309. Up to 1072 conditions per place. [2024-06-27 23:42:18,934 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 283 selfloop transitions, 25 changer transitions 0/310 dead transitions. [2024-06-27 23:42:18,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 310 transitions, 3836 flow [2024-06-27 23:42:18,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:42:18,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:42:18,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-27 23:42:18,935 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33724340175953077 [2024-06-27 23:42:18,935 INFO L175 Difference]: Start difference. First operand has 342 places, 299 transitions, 3164 flow. Second operand 11 states and 115 transitions. [2024-06-27 23:42:18,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 310 transitions, 3836 flow [2024-06-27 23:42:19,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 310 transitions, 3796 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-27 23:42:19,406 INFO L231 Difference]: Finished difference. Result has 344 places, 300 transitions, 3214 flow [2024-06-27 23:42:19,406 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3124, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3214, PETRI_PLACES=344, PETRI_TRANSITIONS=300} [2024-06-27 23:42:19,406 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 314 predicate places. [2024-06-27 23:42:19,406 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 300 transitions, 3214 flow [2024-06-27 23:42:19,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:42:19,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:42:19,407 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:42:19,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-27 23:42:19,407 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:42:19,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:42:19,407 INFO L85 PathProgramCache]: Analyzing trace with hash 688350567, now seen corresponding path program 11 times [2024-06-27 23:42:19,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:42:19,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365326492] [2024-06-27 23:42:19,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:42:19,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:42:19,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:42:20,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:42:20,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:42:20,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365326492] [2024-06-27 23:42:20,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365326492] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:42:20,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:42:20,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:42:20,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850372482] [2024-06-27 23:42:20,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:42:20,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:42:20,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:42:20,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:42:20,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:42:20,995 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:42:20,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 300 transitions, 3214 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:42:20,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:42:20,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:42:20,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:42:21,464 INFO L124 PetriNetUnfolderBase]: 628/1115 cut-off events. [2024-06-27 23:42:21,464 INFO L125 PetriNetUnfolderBase]: For 172864/172864 co-relation queries the response was YES. [2024-06-27 23:42:21,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9259 conditions, 1115 events. 628/1115 cut-off events. For 172864/172864 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 5725 event pairs, 98 based on Foata normal form. 2/1115 useless extension candidates. Maximal degree in co-relation 9101. Up to 955 conditions per place. [2024-06-27 23:42:21,478 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 255 selfloop transitions, 56 changer transitions 0/313 dead transitions. [2024-06-27 23:42:21,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 313 transitions, 4104 flow [2024-06-27 23:42:21,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:42:21,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:42:21,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-27 23:42:21,479 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36656891495601174 [2024-06-27 23:42:21,479 INFO L175 Difference]: Start difference. First operand has 344 places, 300 transitions, 3214 flow. Second operand 11 states and 125 transitions. [2024-06-27 23:42:21,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 313 transitions, 4104 flow [2024-06-27 23:42:22,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 313 transitions, 4004 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-06-27 23:42:22,034 INFO L231 Difference]: Finished difference. Result has 346 places, 300 transitions, 3231 flow [2024-06-27 23:42:22,034 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3114, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3231, PETRI_PLACES=346, PETRI_TRANSITIONS=300} [2024-06-27 23:42:22,035 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 316 predicate places. [2024-06-27 23:42:22,035 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 300 transitions, 3231 flow [2024-06-27 23:42:22,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:42:22,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:42:22,035 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:42:22,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-27 23:42:22,035 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:42:22,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:42:22,036 INFO L85 PathProgramCache]: Analyzing trace with hash -977774834, now seen corresponding path program 15 times [2024-06-27 23:42:22,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:42:22,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354438073] [2024-06-27 23:42:22,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:42:22,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:42:22,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:42:23,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:42:23,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:42:23,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354438073] [2024-06-27 23:42:23,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354438073] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:42:23,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:42:23,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:42:23,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135660414] [2024-06-27 23:42:23,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:42:23,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:42:23,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:42:23,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:42:23,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:42:23,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:42:23,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 300 transitions, 3231 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:42:23,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:42:23,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:42:23,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:42:23,688 INFO L124 PetriNetUnfolderBase]: 631/1120 cut-off events. [2024-06-27 23:42:23,689 INFO L125 PetriNetUnfolderBase]: For 169982/169982 co-relation queries the response was YES. [2024-06-27 23:42:23,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9346 conditions, 1120 events. 631/1120 cut-off events. For 169982/169982 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 5756 event pairs, 102 based on Foata normal form. 1/1119 useless extension candidates. Maximal degree in co-relation 9187. Up to 1074 conditions per place. [2024-06-27 23:42:23,702 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 283 selfloop transitions, 26 changer transitions 0/311 dead transitions. [2024-06-27 23:42:23,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 311 transitions, 3929 flow [2024-06-27 23:42:23,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:42:23,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:42:23,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-27 23:42:23,703 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-06-27 23:42:23,703 INFO L175 Difference]: Start difference. First operand has 346 places, 300 transitions, 3231 flow. Second operand 10 states and 109 transitions. [2024-06-27 23:42:23,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 311 transitions, 3929 flow [2024-06-27 23:42:24,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 311 transitions, 3829 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-27 23:42:24,213 INFO L231 Difference]: Finished difference. Result has 346 places, 302 transitions, 3252 flow [2024-06-27 23:42:24,213 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3131, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3252, PETRI_PLACES=346, PETRI_TRANSITIONS=302} [2024-06-27 23:42:24,213 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 316 predicate places. [2024-06-27 23:42:24,213 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 302 transitions, 3252 flow [2024-06-27 23:42:24,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:42:24,214 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:42:24,214 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:42:24,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-27 23:42:24,214 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:42:24,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:42:24,214 INFO L85 PathProgramCache]: Analyzing trace with hash 693707150, now seen corresponding path program 16 times [2024-06-27 23:42:24,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:42:24,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793472973] [2024-06-27 23:42:24,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:42:24,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:42:24,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:42:25,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:42:25,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:42:25,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793472973] [2024-06-27 23:42:25,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793472973] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:42:25,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:42:25,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:42:25,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626300899] [2024-06-27 23:42:25,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:42:25,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:42:25,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:42:25,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:42:25,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:42:25,740 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:42:25,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 302 transitions, 3252 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:42:25,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:42:25,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:42:25,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:42:26,156 INFO L124 PetriNetUnfolderBase]: 634/1125 cut-off events. [2024-06-27 23:42:26,157 INFO L125 PetriNetUnfolderBase]: For 173352/173352 co-relation queries the response was YES. [2024-06-27 23:42:26,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9404 conditions, 1125 events. 634/1125 cut-off events. For 173352/173352 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 5781 event pairs, 102 based on Foata normal form. 1/1124 useless extension candidates. Maximal degree in co-relation 9244. Up to 1043 conditions per place. [2024-06-27 23:42:26,170 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 270 selfloop transitions, 41 changer transitions 0/313 dead transitions. [2024-06-27 23:42:26,170 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 313 transitions, 3958 flow [2024-06-27 23:42:26,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:42:26,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:42:26,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-27 23:42:26,171 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-27 23:42:26,172 INFO L175 Difference]: Start difference. First operand has 346 places, 302 transitions, 3252 flow. Second operand 11 states and 121 transitions. [2024-06-27 23:42:26,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 313 transitions, 3958 flow [2024-06-27 23:42:26,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 313 transitions, 3853 flow, removed 28 selfloop flow, removed 8 redundant places. [2024-06-27 23:42:26,700 INFO L231 Difference]: Finished difference. Result has 349 places, 304 transitions, 3302 flow [2024-06-27 23:42:26,700 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3147, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3302, PETRI_PLACES=349, PETRI_TRANSITIONS=304} [2024-06-27 23:42:26,701 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 319 predicate places. [2024-06-27 23:42:26,701 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 304 transitions, 3302 flow [2024-06-27 23:42:26,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:42:26,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:42:26,701 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:42:26,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-27 23:42:26,703 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:42:26,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:42:26,703 INFO L85 PathProgramCache]: Analyzing trace with hash -831285995, now seen corresponding path program 12 times [2024-06-27 23:42:26,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:42:26,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373122497] [2024-06-27 23:42:26,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:42:26,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:42:26,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:42:28,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:42:28,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:42:28,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373122497] [2024-06-27 23:42:28,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373122497] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:42:28,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:42:28,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:42:28,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961388525] [2024-06-27 23:42:28,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:42:28,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:42:28,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:42:28,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:42:28,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:42:28,117 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:42:28,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 304 transitions, 3302 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:42:28,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:42:28,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:42:28,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:42:28,624 INFO L124 PetriNetUnfolderBase]: 640/1135 cut-off events. [2024-06-27 23:42:28,625 INFO L125 PetriNetUnfolderBase]: For 182790/182790 co-relation queries the response was YES. [2024-06-27 23:42:28,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9530 conditions, 1135 events. 640/1135 cut-off events. For 182790/182790 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 5838 event pairs, 99 based on Foata normal form. 2/1135 useless extension candidates. Maximal degree in co-relation 9369. Up to 1030 conditions per place. [2024-06-27 23:42:28,638 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 278 selfloop transitions, 39 changer transitions 0/319 dead transitions. [2024-06-27 23:42:28,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 319 transitions, 4256 flow [2024-06-27 23:42:28,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:42:28,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:42:28,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-27 23:42:28,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35777126099706746 [2024-06-27 23:42:28,639 INFO L175 Difference]: Start difference. First operand has 349 places, 304 transitions, 3302 flow. Second operand 11 states and 122 transitions. [2024-06-27 23:42:28,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 319 transitions, 4256 flow [2024-06-27 23:42:29,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 319 transitions, 4117 flow, removed 30 selfloop flow, removed 9 redundant places. [2024-06-27 23:42:29,152 INFO L231 Difference]: Finished difference. Result has 351 places, 306 transitions, 3292 flow [2024-06-27 23:42:29,152 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3163, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3292, PETRI_PLACES=351, PETRI_TRANSITIONS=306} [2024-06-27 23:42:29,153 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 321 predicate places. [2024-06-27 23:42:29,153 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 306 transitions, 3292 flow [2024-06-27 23:42:29,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:42:29,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:42:29,153 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:42:29,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-27 23:42:29,153 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:42:29,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:42:29,154 INFO L85 PathProgramCache]: Analyzing trace with hash 693706995, now seen corresponding path program 12 times [2024-06-27 23:42:29,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:42:29,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083250487] [2024-06-27 23:42:29,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:42:29,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:42:29,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:42:30,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:42:30,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:42:30,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083250487] [2024-06-27 23:42:30,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083250487] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:42:30,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:42:30,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:42:30,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975928150] [2024-06-27 23:42:30,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:42:30,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:42:30,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:42:30,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:42:30,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:42:30,784 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:42:30,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 306 transitions, 3292 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:42:30,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:42:30,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:42:30,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:42:31,164 INFO L124 PetriNetUnfolderBase]: 644/1143 cut-off events. [2024-06-27 23:42:31,164 INFO L125 PetriNetUnfolderBase]: For 186245/186245 co-relation queries the response was YES. [2024-06-27 23:42:31,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9601 conditions, 1143 events. 644/1143 cut-off events. For 186245/186245 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 5902 event pairs, 104 based on Foata normal form. 2/1143 useless extension candidates. Maximal degree in co-relation 9439. Up to 1094 conditions per place. [2024-06-27 23:42:31,178 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 291 selfloop transitions, 24 changer transitions 0/317 dead transitions. [2024-06-27 23:42:31,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 317 transitions, 3980 flow [2024-06-27 23:42:31,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:42:31,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:42:31,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-27 23:42:31,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34017595307917886 [2024-06-27 23:42:31,179 INFO L175 Difference]: Start difference. First operand has 351 places, 306 transitions, 3292 flow. Second operand 11 states and 116 transitions. [2024-06-27 23:42:31,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 317 transitions, 3980 flow [2024-06-27 23:42:31,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 317 transitions, 3831 flow, removed 16 selfloop flow, removed 10 redundant places. [2024-06-27 23:42:31,722 INFO L231 Difference]: Finished difference. Result has 352 places, 307 transitions, 3233 flow [2024-06-27 23:42:31,722 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3143, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3233, PETRI_PLACES=352, PETRI_TRANSITIONS=307} [2024-06-27 23:42:31,723 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 322 predicate places. [2024-06-27 23:42:31,723 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 307 transitions, 3233 flow [2024-06-27 23:42:31,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:42:31,723 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:42:31,723 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:42:31,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-27 23:42:31,724 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:42:31,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:42:31,724 INFO L85 PathProgramCache]: Analyzing trace with hash 688196745, now seen corresponding path program 13 times [2024-06-27 23:42:31,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:42:31,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417229182] [2024-06-27 23:42:31,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:42:31,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:42:31,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:42:33,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:42:33,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:42:33,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417229182] [2024-06-27 23:42:33,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417229182] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:42:33,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:42:33,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:42:33,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409886675] [2024-06-27 23:42:33,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:42:33,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:42:33,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:42:33,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:42:33,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:42:33,230 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:42:33,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 307 transitions, 3233 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:42:33,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:42:33,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:42:33,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:42:33,623 INFO L124 PetriNetUnfolderBase]: 655/1164 cut-off events. [2024-06-27 23:42:33,624 INFO L125 PetriNetUnfolderBase]: For 202547/202547 co-relation queries the response was YES. [2024-06-27 23:42:33,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9974 conditions, 1164 events. 655/1164 cut-off events. For 202547/202547 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 6058 event pairs, 107 based on Foata normal form. 2/1164 useless extension candidates. Maximal degree in co-relation 9811. Up to 1072 conditions per place. [2024-06-27 23:42:33,638 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 284 selfloop transitions, 35 changer transitions 0/321 dead transitions. [2024-06-27 23:42:33,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 321 transitions, 4199 flow [2024-06-27 23:42:33,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:42:33,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:42:33,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-27 23:42:33,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36129032258064514 [2024-06-27 23:42:33,639 INFO L175 Difference]: Start difference. First operand has 352 places, 307 transitions, 3233 flow. Second operand 10 states and 112 transitions. [2024-06-27 23:42:33,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 321 transitions, 4199 flow [2024-06-27 23:42:34,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 321 transitions, 4119 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-27 23:42:34,290 INFO L231 Difference]: Finished difference. Result has 353 places, 309 transitions, 3305 flow [2024-06-27 23:42:34,290 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3153, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3305, PETRI_PLACES=353, PETRI_TRANSITIONS=309} [2024-06-27 23:42:34,290 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 323 predicate places. [2024-06-27 23:42:34,291 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 309 transitions, 3305 flow [2024-06-27 23:42:34,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:42:34,291 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:42:34,291 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:42:34,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-27 23:42:34,291 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:42:34,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:42:34,292 INFO L85 PathProgramCache]: Analyzing trace with hash -831291947, now seen corresponding path program 14 times [2024-06-27 23:42:34,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:42:34,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895945822] [2024-06-27 23:42:34,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:42:34,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:42:34,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:42:35,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:42:35,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:42:35,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895945822] [2024-06-27 23:42:35,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895945822] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:42:35,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:42:35,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:42:35,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223203324] [2024-06-27 23:42:35,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:42:35,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:42:35,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:42:35,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:42:35,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:42:35,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:42:35,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 309 transitions, 3305 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:42:35,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:42:35,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:42:35,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:42:36,258 INFO L124 PetriNetUnfolderBase]: 659/1172 cut-off events. [2024-06-27 23:42:36,258 INFO L125 PetriNetUnfolderBase]: For 206227/206227 co-relation queries the response was YES. [2024-06-27 23:42:36,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10072 conditions, 1172 events. 659/1172 cut-off events. For 206227/206227 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 6125 event pairs, 109 based on Foata normal form. 2/1172 useless extension candidates. Maximal degree in co-relation 9908. Up to 1138 conditions per place. [2024-06-27 23:42:36,273 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 301 selfloop transitions, 17 changer transitions 0/320 dead transitions. [2024-06-27 23:42:36,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 320 transitions, 4003 flow [2024-06-27 23:42:36,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:42:36,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:42:36,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 112 transitions. [2024-06-27 23:42:36,275 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3284457478005865 [2024-06-27 23:42:36,275 INFO L175 Difference]: Start difference. First operand has 353 places, 309 transitions, 3305 flow. Second operand 11 states and 112 transitions. [2024-06-27 23:42:36,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 320 transitions, 4003 flow [2024-06-27 23:42:36,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 320 transitions, 3897 flow, removed 32 selfloop flow, removed 6 redundant places. [2024-06-27 23:42:36,905 INFO L231 Difference]: Finished difference. Result has 358 places, 310 transitions, 3279 flow [2024-06-27 23:42:36,905 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3213, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3279, PETRI_PLACES=358, PETRI_TRANSITIONS=310} [2024-06-27 23:42:36,905 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 328 predicate places. [2024-06-27 23:42:36,905 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 310 transitions, 3279 flow [2024-06-27 23:42:36,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:42:36,906 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:42:36,906 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:42:36,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-27 23:42:36,907 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:42:36,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:42:36,907 INFO L85 PathProgramCache]: Analyzing trace with hash -831084185, now seen corresponding path program 13 times [2024-06-27 23:42:36,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:42:36,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508691531] [2024-06-27 23:42:36,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:42:36,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:42:36,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:42:38,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:42:38,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:42:38,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508691531] [2024-06-27 23:42:38,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508691531] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:42:38,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:42:38,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:42:38,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221587464] [2024-06-27 23:42:38,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:42:38,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:42:38,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:42:38,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:42:38,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:42:38,320 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:42:38,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 310 transitions, 3279 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:42:38,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:42:38,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:42:38,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:42:38,859 INFO L124 PetriNetUnfolderBase]: 665/1182 cut-off events. [2024-06-27 23:42:38,859 INFO L125 PetriNetUnfolderBase]: For 208708/208708 co-relation queries the response was YES. [2024-06-27 23:42:38,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10076 conditions, 1182 events. 665/1182 cut-off events. For 208708/208708 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 6165 event pairs, 108 based on Foata normal form. 2/1182 useless extension candidates. Maximal degree in co-relation 9910. Up to 1073 conditions per place. [2024-06-27 23:42:38,874 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 287 selfloop transitions, 37 changer transitions 0/326 dead transitions. [2024-06-27 23:42:38,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 326 transitions, 4263 flow [2024-06-27 23:42:38,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:42:38,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:42:38,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-27 23:42:38,875 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36656891495601174 [2024-06-27 23:42:38,875 INFO L175 Difference]: Start difference. First operand has 358 places, 310 transitions, 3279 flow. Second operand 11 states and 125 transitions. [2024-06-27 23:42:38,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 326 transitions, 4263 flow [2024-06-27 23:42:39,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 326 transitions, 4209 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-27 23:42:39,531 INFO L231 Difference]: Finished difference. Result has 360 places, 312 transitions, 3348 flow [2024-06-27 23:42:39,532 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3225, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3348, PETRI_PLACES=360, PETRI_TRANSITIONS=312} [2024-06-27 23:42:39,532 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 330 predicate places. [2024-06-27 23:42:39,532 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 312 transitions, 3348 flow [2024-06-27 23:42:39,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:42:39,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:42:39,532 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:42:39,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-27 23:42:39,533 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:42:39,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:42:39,533 INFO L85 PathProgramCache]: Analyzing trace with hash 688200465, now seen corresponding path program 15 times [2024-06-27 23:42:39,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:42:39,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185090853] [2024-06-27 23:42:39,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:42:39,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:42:39,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:42:41,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:42:41,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:42:41,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185090853] [2024-06-27 23:42:41,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185090853] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:42:41,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:42:41,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:42:41,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995993940] [2024-06-27 23:42:41,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:42:41,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:42:41,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:42:41,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:42:41,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:42:41,135 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:42:41,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 312 transitions, 3348 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:42:41,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:42:41,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:42:41,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:42:41,516 INFO L124 PetriNetUnfolderBase]: 662/1177 cut-off events. [2024-06-27 23:42:41,517 INFO L125 PetriNetUnfolderBase]: For 198768/198768 co-relation queries the response was YES. [2024-06-27 23:42:41,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9855 conditions, 1177 events. 662/1177 cut-off events. For 198768/198768 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 6152 event pairs, 110 based on Foata normal form. 2/1177 useless extension candidates. Maximal degree in co-relation 9688. Up to 1116 conditions per place. [2024-06-27 23:42:41,530 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 288 selfloop transitions, 32 changer transitions 0/322 dead transitions. [2024-06-27 23:42:41,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 322 transitions, 4010 flow [2024-06-27 23:42:41,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:42:41,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:42:41,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-27 23:42:41,531 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34017595307917886 [2024-06-27 23:42:41,531 INFO L175 Difference]: Start difference. First operand has 360 places, 312 transitions, 3348 flow. Second operand 11 states and 116 transitions. [2024-06-27 23:42:41,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 322 transitions, 4010 flow [2024-06-27 23:42:42,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 322 transitions, 3851 flow, removed 28 selfloop flow, removed 10 redundant places. [2024-06-27 23:42:42,132 INFO L231 Difference]: Finished difference. Result has 361 places, 312 transitions, 3257 flow [2024-06-27 23:42:42,133 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3189, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3257, PETRI_PLACES=361, PETRI_TRANSITIONS=312} [2024-06-27 23:42:42,133 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 331 predicate places. [2024-06-27 23:42:42,133 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 312 transitions, 3257 flow [2024-06-27 23:42:42,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:42:42,133 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:42:42,133 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:42:42,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-27 23:42:42,134 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:42:42,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:42:42,134 INFO L85 PathProgramCache]: Analyzing trace with hash 688200620, now seen corresponding path program 17 times [2024-06-27 23:42:42,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:42:42,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976080780] [2024-06-27 23:42:42,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:42:42,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:42:42,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:42:43,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:42:43,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:42:43,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976080780] [2024-06-27 23:42:43,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976080780] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:42:43,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:42:43,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:42:43,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077654393] [2024-06-27 23:42:43,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:42:43,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:42:43,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:42:43,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:42:43,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:42:43,735 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:42:43,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 312 transitions, 3257 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:42:43,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:42:43,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:42:43,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:42:44,187 INFO L124 PetriNetUnfolderBase]: 680/1206 cut-off events. [2024-06-27 23:42:44,188 INFO L125 PetriNetUnfolderBase]: For 216682/216682 co-relation queries the response was YES. [2024-06-27 23:42:44,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10432 conditions, 1206 events. 680/1206 cut-off events. For 216682/216682 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 6294 event pairs, 112 based on Foata normal form. 1/1205 useless extension candidates. Maximal degree in co-relation 10265. Up to 1072 conditions per place. [2024-06-27 23:42:44,202 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 260 selfloop transitions, 66 changer transitions 0/328 dead transitions. [2024-06-27 23:42:44,202 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 328 transitions, 4325 flow [2024-06-27 23:42:44,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:42:44,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:42:44,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-27 23:42:44,203 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36950146627565983 [2024-06-27 23:42:44,203 INFO L175 Difference]: Start difference. First operand has 361 places, 312 transitions, 3257 flow. Second operand 11 states and 126 transitions. [2024-06-27 23:42:44,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 328 transitions, 4325 flow [2024-06-27 23:42:44,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 328 transitions, 4247 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-27 23:42:44,888 INFO L231 Difference]: Finished difference. Result has 363 places, 317 transitions, 3505 flow [2024-06-27 23:42:44,888 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3179, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3505, PETRI_PLACES=363, PETRI_TRANSITIONS=317} [2024-06-27 23:42:44,889 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 333 predicate places. [2024-06-27 23:42:44,889 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 317 transitions, 3505 flow [2024-06-27 23:42:44,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:42:44,889 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:42:44,889 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:42:44,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-27 23:42:44,889 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:42:44,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:42:44,890 INFO L85 PathProgramCache]: Analyzing trace with hash 688350350, now seen corresponding path program 18 times [2024-06-27 23:42:44,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:42:44,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086540374] [2024-06-27 23:42:44,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:42:44,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:42:44,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:42:46,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:42:46,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:42:46,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086540374] [2024-06-27 23:42:46,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086540374] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:42:46,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:42:46,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:42:46,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156279299] [2024-06-27 23:42:46,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:42:46,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:42:46,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:42:46,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:42:46,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:42:46,363 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:42:46,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 317 transitions, 3505 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:42:46,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:42:46,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:42:46,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:42:46,795 INFO L124 PetriNetUnfolderBase]: 678/1203 cut-off events. [2024-06-27 23:42:46,796 INFO L125 PetriNetUnfolderBase]: For 213817/213817 co-relation queries the response was YES. [2024-06-27 23:42:46,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10469 conditions, 1203 events. 678/1203 cut-off events. For 213817/213817 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 6293 event pairs, 112 based on Foata normal form. 1/1202 useless extension candidates. Maximal degree in co-relation 10300. Up to 1130 conditions per place. [2024-06-27 23:42:46,810 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 285 selfloop transitions, 39 changer transitions 0/326 dead transitions. [2024-06-27 23:42:46,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 326 transitions, 4173 flow [2024-06-27 23:42:46,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:42:46,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:42:46,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-27 23:42:46,812 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3460410557184751 [2024-06-27 23:42:46,812 INFO L175 Difference]: Start difference. First operand has 363 places, 317 transitions, 3505 flow. Second operand 11 states and 118 transitions. [2024-06-27 23:42:46,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 326 transitions, 4173 flow [2024-06-27 23:42:47,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 326 transitions, 4032 flow, removed 62 selfloop flow, removed 5 redundant places. [2024-06-27 23:42:47,580 INFO L231 Difference]: Finished difference. Result has 369 places, 317 transitions, 3447 flow [2024-06-27 23:42:47,580 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3364, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3447, PETRI_PLACES=369, PETRI_TRANSITIONS=317} [2024-06-27 23:42:47,581 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 339 predicate places. [2024-06-27 23:42:47,581 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 317 transitions, 3447 flow [2024-06-27 23:42:47,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:42:47,581 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:42:47,581 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:42:47,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-27 23:42:47,581 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:42:47,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:42:47,582 INFO L85 PathProgramCache]: Analyzing trace with hash -831291792, now seen corresponding path program 19 times [2024-06-27 23:42:47,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:42:47,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464906573] [2024-06-27 23:42:47,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:42:47,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:42:47,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:42:48,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:42:48,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:42:48,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464906573] [2024-06-27 23:42:48,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464906573] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:42:48,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:42:48,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:42:48,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111088839] [2024-06-27 23:42:48,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:42:48,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:42:48,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:42:48,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:42:48,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:42:48,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:42:48,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 317 transitions, 3447 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:42:48,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:42:48,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:42:48,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:42:49,356 INFO L124 PetriNetUnfolderBase]: 681/1208 cut-off events. [2024-06-27 23:42:49,356 INFO L125 PetriNetUnfolderBase]: For 215897/215897 co-relation queries the response was YES. [2024-06-27 23:42:49,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10452 conditions, 1208 events. 681/1208 cut-off events. For 215897/215897 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 6337 event pairs, 112 based on Foata normal form. 1/1207 useless extension candidates. Maximal degree in co-relation 10281. Up to 1149 conditions per place. [2024-06-27 23:42:49,371 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 295 selfloop transitions, 33 changer transitions 0/330 dead transitions. [2024-06-27 23:42:49,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 330 transitions, 4454 flow [2024-06-27 23:42:49,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:42:49,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:42:49,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-27 23:42:49,372 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3580645161290323 [2024-06-27 23:42:49,372 INFO L175 Difference]: Start difference. First operand has 369 places, 317 transitions, 3447 flow. Second operand 10 states and 111 transitions. [2024-06-27 23:42:49,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 330 transitions, 4454 flow [2024-06-27 23:42:50,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 330 transitions, 4367 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-27 23:42:50,128 INFO L231 Difference]: Finished difference. Result has 369 places, 320 transitions, 3524 flow [2024-06-27 23:42:50,128 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3360, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3524, PETRI_PLACES=369, PETRI_TRANSITIONS=320} [2024-06-27 23:42:50,128 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 339 predicate places. [2024-06-27 23:42:50,128 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 320 transitions, 3524 flow [2024-06-27 23:42:50,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:42:50,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:42:50,129 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:42:50,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-27 23:42:50,129 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:42:50,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:42:50,129 INFO L85 PathProgramCache]: Analyzing trace with hash -831076745, now seen corresponding path program 14 times [2024-06-27 23:42:50,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:42:50,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491891330] [2024-06-27 23:42:50,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:42:50,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:42:50,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:42:51,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:42:51,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:42:51,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491891330] [2024-06-27 23:42:51,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491891330] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:42:51,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:42:51,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:42:51,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240596172] [2024-06-27 23:42:51,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:42:51,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:42:51,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:42:51,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:42:51,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:42:51,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:42:51,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 320 transitions, 3524 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:42:51,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:42:51,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:42:51,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:42:52,254 INFO L124 PetriNetUnfolderBase]: 677/1202 cut-off events. [2024-06-27 23:42:52,254 INFO L125 PetriNetUnfolderBase]: For 212314/212314 co-relation queries the response was YES. [2024-06-27 23:42:52,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10190 conditions, 1202 events. 677/1202 cut-off events. For 212314/212314 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 6318 event pairs, 109 based on Foata normal form. 2/1202 useless extension candidates. Maximal degree in co-relation 10018. Up to 1096 conditions per place. [2024-06-27 23:42:52,270 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 292 selfloop transitions, 38 changer transitions 0/332 dead transitions. [2024-06-27 23:42:52,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 332 transitions, 4234 flow [2024-06-27 23:42:52,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:42:52,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:42:52,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-27 23:42:52,271 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3741935483870968 [2024-06-27 23:42:52,271 INFO L175 Difference]: Start difference. First operand has 369 places, 320 transitions, 3524 flow. Second operand 10 states and 116 transitions. [2024-06-27 23:42:52,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 332 transitions, 4234 flow [2024-06-27 23:42:53,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 332 transitions, 4132 flow, removed 35 selfloop flow, removed 6 redundant places. [2024-06-27 23:42:53,013 INFO L231 Difference]: Finished difference. Result has 373 places, 320 transitions, 3503 flow [2024-06-27 23:42:53,014 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3422, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3503, PETRI_PLACES=373, PETRI_TRANSITIONS=320} [2024-06-27 23:42:53,014 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 343 predicate places. [2024-06-27 23:42:53,014 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 320 transitions, 3503 flow [2024-06-27 23:42:53,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:42:53,014 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:42:53,014 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:42:53,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-27 23:42:53,015 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:42:53,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:42:53,015 INFO L85 PathProgramCache]: Analyzing trace with hash -831084402, now seen corresponding path program 20 times [2024-06-27 23:42:53,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:42:53,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464706662] [2024-06-27 23:42:53,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:42:53,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:42:53,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:42:54,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:42:54,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:42:54,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464706662] [2024-06-27 23:42:54,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464706662] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:42:54,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:42:54,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:42:54,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571252941] [2024-06-27 23:42:54,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:42:54,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:42:54,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:42:54,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:42:54,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:42:54,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:42:54,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 320 transitions, 3503 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:42:54,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:42:54,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:42:54,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:42:54,655 INFO L124 PetriNetUnfolderBase]: 675/1199 cut-off events. [2024-06-27 23:42:54,656 INFO L125 PetriNetUnfolderBase]: For 200813/200813 co-relation queries the response was YES. [2024-06-27 23:42:54,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10054 conditions, 1199 events. 675/1199 cut-off events. For 200813/200813 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 6281 event pairs, 111 based on Foata normal form. 1/1198 useless extension candidates. Maximal degree in co-relation 9880. Up to 1153 conditions per place. [2024-06-27 23:42:54,670 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 302 selfloop transitions, 25 changer transitions 0/329 dead transitions. [2024-06-27 23:42:54,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 329 transitions, 4177 flow [2024-06-27 23:42:54,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:42:54,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:42:54,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-27 23:42:54,671 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-27 23:42:54,671 INFO L175 Difference]: Start difference. First operand has 373 places, 320 transitions, 3503 flow. Second operand 10 states and 110 transitions. [2024-06-27 23:42:54,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 329 transitions, 4177 flow [2024-06-27 23:42:55,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 373 places, 329 transitions, 4036 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-27 23:42:55,371 INFO L231 Difference]: Finished difference. Result has 374 places, 320 transitions, 3417 flow [2024-06-27 23:42:55,371 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3362, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3417, PETRI_PLACES=374, PETRI_TRANSITIONS=320} [2024-06-27 23:42:55,372 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 344 predicate places. [2024-06-27 23:42:55,372 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 320 transitions, 3417 flow [2024-06-27 23:42:55,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:42:55,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:42:55,372 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:42:55,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-27 23:42:55,372 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:42:55,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:42:55,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1815698687, now seen corresponding path program 16 times [2024-06-27 23:42:55,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:42:55,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098264915] [2024-06-27 23:42:55,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:42:55,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:42:55,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:42:56,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:42:56,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:42:56,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098264915] [2024-06-27 23:42:56,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098264915] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:42:56,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:42:56,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:42:56,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310272802] [2024-06-27 23:42:56,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:42:56,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:42:56,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:42:56,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:42:56,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:42:56,896 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:42:56,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 320 transitions, 3417 flow. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:42:56,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:42:56,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:42:56,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:42:57,436 INFO L124 PetriNetUnfolderBase]: 640/1174 cut-off events. [2024-06-27 23:42:57,437 INFO L125 PetriNetUnfolderBase]: For 230889/230892 co-relation queries the response was YES. [2024-06-27 23:42:57,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9910 conditions, 1174 events. 640/1174 cut-off events. For 230889/230892 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 6384 event pairs, 34 based on Foata normal form. 3/1175 useless extension candidates. Maximal degree in co-relation 9736. Up to 759 conditions per place. [2024-06-27 23:42:57,449 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 215 selfloop transitions, 47 changer transitions 0/340 dead transitions. [2024-06-27 23:42:57,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 340 transitions, 4307 flow [2024-06-27 23:42:57,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:42:57,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:42:57,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 133 transitions. [2024-06-27 23:42:57,450 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4290322580645161 [2024-06-27 23:42:57,450 INFO L175 Difference]: Start difference. First operand has 374 places, 320 transitions, 3417 flow. Second operand 10 states and 133 transitions. [2024-06-27 23:42:57,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 340 transitions, 4307 flow [2024-06-27 23:42:58,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 340 transitions, 4238 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-27 23:42:58,254 INFO L231 Difference]: Finished difference. Result has 375 places, 322 transitions, 3534 flow [2024-06-27 23:42:58,255 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3348, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3534, PETRI_PLACES=375, PETRI_TRANSITIONS=322} [2024-06-27 23:42:58,255 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 345 predicate places. [2024-06-27 23:42:58,255 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 322 transitions, 3534 flow [2024-06-27 23:42:58,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:42:58,255 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:42:58,255 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:42:58,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-27 23:42:58,256 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:42:58,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:42:58,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1046581800, now seen corresponding path program 21 times [2024-06-27 23:42:58,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:42:58,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837089443] [2024-06-27 23:42:58,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:42:58,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:42:58,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:42:59,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:42:59,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:42:59,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837089443] [2024-06-27 23:42:59,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837089443] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:42:59,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:42:59,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:42:59,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003044300] [2024-06-27 23:42:59,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:42:59,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:42:59,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:42:59,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:42:59,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:42:59,897 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:42:59,898 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 322 transitions, 3534 flow. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:42:59,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:42:59,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:42:59,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:43:00,522 INFO L124 PetriNetUnfolderBase]: 694/1234 cut-off events. [2024-06-27 23:43:00,522 INFO L125 PetriNetUnfolderBase]: For 232640/232640 co-relation queries the response was YES. [2024-06-27 23:43:00,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10824 conditions, 1234 events. 694/1234 cut-off events. For 232640/232640 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 6538 event pairs, 74 based on Foata normal form. 1/1233 useless extension candidates. Maximal degree in co-relation 10649. Up to 1080 conditions per place. [2024-06-27 23:43:00,538 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 284 selfloop transitions, 56 changer transitions 0/342 dead transitions. [2024-06-27 23:43:00,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 342 transitions, 4636 flow [2024-06-27 23:43:00,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:43:00,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:43:00,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-27 23:43:00,539 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3812316715542522 [2024-06-27 23:43:00,539 INFO L175 Difference]: Start difference. First operand has 375 places, 322 transitions, 3534 flow. Second operand 11 states and 130 transitions. [2024-06-27 23:43:00,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 342 transitions, 4636 flow [2024-06-27 23:43:01,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 342 transitions, 4543 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-27 23:43:01,291 INFO L231 Difference]: Finished difference. Result has 379 places, 326 transitions, 3703 flow [2024-06-27 23:43:01,291 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3443, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3703, PETRI_PLACES=379, PETRI_TRANSITIONS=326} [2024-06-27 23:43:01,308 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 349 predicate places. [2024-06-27 23:43:01,308 INFO L495 AbstractCegarLoop]: Abstraction has has 379 places, 326 transitions, 3703 flow [2024-06-27 23:43:01,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:43:01,309 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:43:01,309 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:43:01,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-27 23:43:01,309 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:43:01,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:43:01,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1774928351, now seen corresponding path program 17 times [2024-06-27 23:43:01,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:43:01,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205489245] [2024-06-27 23:43:01,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:43:01,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:43:01,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:43:02,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:43:02,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:43:02,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205489245] [2024-06-27 23:43:02,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205489245] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:43:02,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:43:02,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:43:02,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196974874] [2024-06-27 23:43:02,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:43:02,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:43:02,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:43:02,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:43:02,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:43:02,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:43:02,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 326 transitions, 3703 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:43:02,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:43:02,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:43:02,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:43:03,435 INFO L124 PetriNetUnfolderBase]: 702/1249 cut-off events. [2024-06-27 23:43:03,436 INFO L125 PetriNetUnfolderBase]: For 240210/240210 co-relation queries the response was YES. [2024-06-27 23:43:03,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10961 conditions, 1249 events. 702/1249 cut-off events. For 240210/240210 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 6646 event pairs, 42 based on Foata normal form. 2/1249 useless extension candidates. Maximal degree in co-relation 10785. Up to 951 conditions per place. [2024-06-27 23:43:03,452 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 282 selfloop transitions, 64 changer transitions 0/348 dead transitions. [2024-06-27 23:43:03,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 348 transitions, 4734 flow [2024-06-27 23:43:03,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:43:03,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:43:03,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-27 23:43:03,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40762463343108507 [2024-06-27 23:43:03,453 INFO L175 Difference]: Start difference. First operand has 379 places, 326 transitions, 3703 flow. Second operand 11 states and 139 transitions. [2024-06-27 23:43:03,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 348 transitions, 4734 flow [2024-06-27 23:43:04,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 348 transitions, 4612 flow, removed 38 selfloop flow, removed 8 redundant places. [2024-06-27 23:43:04,312 INFO L231 Difference]: Finished difference. Result has 382 places, 328 transitions, 3764 flow [2024-06-27 23:43:04,313 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3583, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3764, PETRI_PLACES=382, PETRI_TRANSITIONS=328} [2024-06-27 23:43:04,313 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 352 predicate places. [2024-06-27 23:43:04,313 INFO L495 AbstractCegarLoop]: Abstraction has has 382 places, 328 transitions, 3764 flow [2024-06-27 23:43:04,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:43:04,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:43:04,313 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:43:04,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-27 23:43:04,314 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:43:04,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:43:04,314 INFO L85 PathProgramCache]: Analyzing trace with hash -850329042, now seen corresponding path program 22 times [2024-06-27 23:43:04,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:43:04,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905100542] [2024-06-27 23:43:04,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:43:04,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:43:04,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:43:05,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:43:05,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:43:05,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905100542] [2024-06-27 23:43:05,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905100542] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:43:05,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:43:05,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:43:05,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055408207] [2024-06-27 23:43:05,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:43:05,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:43:05,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:43:05,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:43:05,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:43:05,913 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:43:05,914 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 328 transitions, 3764 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:43:05,914 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:43:05,914 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:43:05,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:43:06,360 INFO L124 PetriNetUnfolderBase]: 725/1286 cut-off events. [2024-06-27 23:43:06,360 INFO L125 PetriNetUnfolderBase]: For 263419/263419 co-relation queries the response was YES. [2024-06-27 23:43:06,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11898 conditions, 1286 events. 725/1286 cut-off events. For 263419/263419 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 6852 event pairs, 82 based on Foata normal form. 1/1285 useless extension candidates. Maximal degree in co-relation 11721. Up to 1098 conditions per place. [2024-06-27 23:43:06,378 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 282 selfloop transitions, 71 changer transitions 0/355 dead transitions. [2024-06-27 23:43:06,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 355 transitions, 5195 flow [2024-06-27 23:43:06,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:43:06,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:43:06,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-06-27 23:43:06,379 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4252199413489736 [2024-06-27 23:43:06,379 INFO L175 Difference]: Start difference. First operand has 382 places, 328 transitions, 3764 flow. Second operand 11 states and 145 transitions. [2024-06-27 23:43:06,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 355 transitions, 5195 flow [2024-06-27 23:43:07,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 355 transitions, 5044 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-06-27 23:43:07,322 INFO L231 Difference]: Finished difference. Result has 386 places, 334 transitions, 3995 flow [2024-06-27 23:43:07,322 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3617, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3995, PETRI_PLACES=386, PETRI_TRANSITIONS=334} [2024-06-27 23:43:07,322 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 356 predicate places. [2024-06-27 23:43:07,322 INFO L495 AbstractCegarLoop]: Abstraction has has 386 places, 334 transitions, 3995 flow [2024-06-27 23:43:07,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:43:07,322 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:43:07,323 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:43:07,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-27 23:43:07,323 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:43:07,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:43:07,324 INFO L85 PathProgramCache]: Analyzing trace with hash 867865709, now seen corresponding path program 18 times [2024-06-27 23:43:07,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:43:07,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135008001] [2024-06-27 23:43:07,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:43:07,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:43:07,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:43:08,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:43:08,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:43:08,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135008001] [2024-06-27 23:43:08,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135008001] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:43:08,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:43:08,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:43:08,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499175862] [2024-06-27 23:43:08,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:43:08,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:43:08,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:43:08,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:43:08,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:43:08,880 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:43:08,880 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 334 transitions, 3995 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:43:08,881 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:43:08,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:43:08,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:43:09,328 INFO L124 PetriNetUnfolderBase]: 740/1315 cut-off events. [2024-06-27 23:43:09,328 INFO L125 PetriNetUnfolderBase]: For 286973/286973 co-relation queries the response was YES. [2024-06-27 23:43:09,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12417 conditions, 1315 events. 740/1315 cut-off events. For 286973/286973 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 7053 event pairs, 75 based on Foata normal form. 2/1315 useless extension candidates. Maximal degree in co-relation 12238. Up to 1135 conditions per place. [2024-06-27 23:43:09,345 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 294 selfloop transitions, 60 changer transitions 0/356 dead transitions. [2024-06-27 23:43:09,345 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 356 transitions, 5059 flow [2024-06-27 23:43:09,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:43:09,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:43:09,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-27 23:43:09,346 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41055718475073316 [2024-06-27 23:43:09,346 INFO L175 Difference]: Start difference. First operand has 386 places, 334 transitions, 3995 flow. Second operand 11 states and 140 transitions. [2024-06-27 23:43:09,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 356 transitions, 5059 flow [2024-06-27 23:43:10,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 356 transitions, 4923 flow, removed 46 selfloop flow, removed 7 redundant places. [2024-06-27 23:43:10,348 INFO L231 Difference]: Finished difference. Result has 390 places, 337 transitions, 4055 flow [2024-06-27 23:43:10,348 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3861, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4055, PETRI_PLACES=390, PETRI_TRANSITIONS=337} [2024-06-27 23:43:10,349 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 360 predicate places. [2024-06-27 23:43:10,349 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 337 transitions, 4055 flow [2024-06-27 23:43:10,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:43:10,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:43:10,349 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:43:10,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-27 23:43:10,349 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:43:10,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:43:10,350 INFO L85 PathProgramCache]: Analyzing trace with hash -819085451, now seen corresponding path program 19 times [2024-06-27 23:43:10,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:43:10,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509480581] [2024-06-27 23:43:10,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:43:10,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:43:10,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:43:11,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:43:11,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:43:11,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509480581] [2024-06-27 23:43:11,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509480581] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:43:11,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:43:11,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:43:11,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156086271] [2024-06-27 23:43:11,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:43:11,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:43:11,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:43:11,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:43:11,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:43:11,952 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:43:11,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 337 transitions, 4055 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:43:11,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:43:11,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:43:11,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:43:12,418 INFO L124 PetriNetUnfolderBase]: 737/1310 cut-off events. [2024-06-27 23:43:12,418 INFO L125 PetriNetUnfolderBase]: For 271232/271232 co-relation queries the response was YES. [2024-06-27 23:43:12,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12151 conditions, 1310 events. 737/1310 cut-off events. For 271232/271232 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 7019 event pairs, 86 based on Foata normal form. 2/1310 useless extension candidates. Maximal degree in co-relation 11971. Up to 1175 conditions per place. [2024-06-27 23:43:12,435 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 295 selfloop transitions, 57 changer transitions 0/354 dead transitions. [2024-06-27 23:43:12,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 354 transitions, 4801 flow [2024-06-27 23:43:12,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:43:12,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:43:12,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-27 23:43:12,437 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40175953079178883 [2024-06-27 23:43:12,437 INFO L175 Difference]: Start difference. First operand has 390 places, 337 transitions, 4055 flow. Second operand 11 states and 137 transitions. [2024-06-27 23:43:12,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 354 transitions, 4801 flow [2024-06-27 23:43:13,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 354 transitions, 4680 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-27 23:43:13,408 INFO L231 Difference]: Finished difference. Result has 393 places, 337 transitions, 4056 flow [2024-06-27 23:43:13,408 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3934, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4056, PETRI_PLACES=393, PETRI_TRANSITIONS=337} [2024-06-27 23:43:13,408 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 363 predicate places. [2024-06-27 23:43:13,409 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 337 transitions, 4056 flow [2024-06-27 23:43:13,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:43:13,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:43:13,409 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:43:13,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-27 23:43:13,409 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:43:13,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:43:13,410 INFO L85 PathProgramCache]: Analyzing trace with hash -734889072, now seen corresponding path program 23 times [2024-06-27 23:43:13,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:43:13,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541372605] [2024-06-27 23:43:13,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:43:13,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:43:13,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:43:14,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:43:14,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:43:14,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541372605] [2024-06-27 23:43:14,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541372605] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:43:14,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:43:14,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:43:14,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977259257] [2024-06-27 23:43:14,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:43:14,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:43:14,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:43:14,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:43:14,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:43:14,994 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:43:14,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 337 transitions, 4056 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:43:14,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:43:14,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:43:14,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:43:15,583 INFO L124 PetriNetUnfolderBase]: 732/1303 cut-off events. [2024-06-27 23:43:15,583 INFO L125 PetriNetUnfolderBase]: For 263284/263284 co-relation queries the response was YES. [2024-06-27 23:43:15,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11622 conditions, 1303 events. 732/1303 cut-off events. For 263284/263284 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 7005 event pairs, 99 based on Foata normal form. 5/1306 useless extension candidates. Maximal degree in co-relation 11441. Up to 1202 conditions per place. [2024-06-27 23:43:15,599 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 310 selfloop transitions, 43 changer transitions 0/355 dead transitions. [2024-06-27 23:43:15,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 355 transitions, 4879 flow [2024-06-27 23:43:15,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:43:15,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:43:15,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-27 23:43:15,600 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4064516129032258 [2024-06-27 23:43:15,600 INFO L175 Difference]: Start difference. First operand has 393 places, 337 transitions, 4056 flow. Second operand 10 states and 126 transitions. [2024-06-27 23:43:15,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 355 transitions, 4879 flow [2024-06-27 23:43:16,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 355 transitions, 4745 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-27 23:43:16,427 INFO L231 Difference]: Finished difference. Result has 393 places, 339 transitions, 4099 flow [2024-06-27 23:43:16,427 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3922, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4099, PETRI_PLACES=393, PETRI_TRANSITIONS=339} [2024-06-27 23:43:16,427 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 363 predicate places. [2024-06-27 23:43:16,427 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 339 transitions, 4099 flow [2024-06-27 23:43:16,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:43:16,427 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:43:16,428 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:43:16,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-27 23:43:16,428 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:43:16,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:43:16,428 INFO L85 PathProgramCache]: Analyzing trace with hash -735067787, now seen corresponding path program 20 times [2024-06-27 23:43:16,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:43:16,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869879162] [2024-06-27 23:43:16,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:43:16,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:43:16,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:43:17,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:43:17,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:43:17,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869879162] [2024-06-27 23:43:17,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869879162] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:43:17,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:43:17,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:43:17,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868968122] [2024-06-27 23:43:17,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:43:17,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:43:17,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:43:17,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:43:17,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:43:18,128 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:43:18,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 339 transitions, 4099 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:43:18,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:43:18,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:43:18,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:43:18,659 INFO L124 PetriNetUnfolderBase]: 736/1311 cut-off events. [2024-06-27 23:43:18,659 INFO L125 PetriNetUnfolderBase]: For 244709/244709 co-relation queries the response was YES. [2024-06-27 23:43:18,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11701 conditions, 1311 events. 736/1311 cut-off events. For 244709/244709 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 7057 event pairs, 103 based on Foata normal form. 2/1311 useless extension candidates. Maximal degree in co-relation 11519. Up to 1233 conditions per place. [2024-06-27 23:43:18,678 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 317 selfloop transitions, 35 changer transitions 0/354 dead transitions. [2024-06-27 23:43:18,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 354 transitions, 4868 flow [2024-06-27 23:43:18,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:43:18,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:43:18,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-27 23:43:18,679 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3903225806451613 [2024-06-27 23:43:18,679 INFO L175 Difference]: Start difference. First operand has 393 places, 339 transitions, 4099 flow. Second operand 10 states and 121 transitions. [2024-06-27 23:43:18,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 354 transitions, 4868 flow [2024-06-27 23:43:19,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 354 transitions, 4701 flow, removed 42 selfloop flow, removed 9 redundant places. [2024-06-27 23:43:19,604 INFO L231 Difference]: Finished difference. Result has 394 places, 340 transitions, 4041 flow [2024-06-27 23:43:19,605 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3932, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4041, PETRI_PLACES=394, PETRI_TRANSITIONS=340} [2024-06-27 23:43:19,605 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 364 predicate places. [2024-06-27 23:43:19,605 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 340 transitions, 4041 flow [2024-06-27 23:43:19,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:43:19,605 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:43:19,606 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:43:19,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-27 23:43:19,606 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:43:19,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:43:19,606 INFO L85 PathProgramCache]: Analyzing trace with hash -735037872, now seen corresponding path program 24 times [2024-06-27 23:43:19,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:43:19,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426771023] [2024-06-27 23:43:19,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:43:19,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:43:19,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:43:20,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:43:20,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:43:20,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426771023] [2024-06-27 23:43:20,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426771023] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:43:20,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:43:20,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:43:20,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844853511] [2024-06-27 23:43:20,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:43:20,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:43:20,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:43:20,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:43:20,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:43:21,053 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:43:21,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 340 transitions, 4041 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:43:21,054 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:43:21,054 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:43:21,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:43:21,554 INFO L124 PetriNetUnfolderBase]: 739/1316 cut-off events. [2024-06-27 23:43:21,554 INFO L125 PetriNetUnfolderBase]: For 236545/236545 co-relation queries the response was YES. [2024-06-27 23:43:21,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11665 conditions, 1316 events. 739/1316 cut-off events. For 236545/236545 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 7103 event pairs, 103 based on Foata normal form. 1/1315 useless extension candidates. Maximal degree in co-relation 11483. Up to 1227 conditions per place. [2024-06-27 23:43:21,572 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 309 selfloop transitions, 44 changer transitions 0/355 dead transitions. [2024-06-27 23:43:21,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 355 transitions, 4843 flow [2024-06-27 23:43:21,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:43:21,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:43:21,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-27 23:43:21,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3967741935483871 [2024-06-27 23:43:21,573 INFO L175 Difference]: Start difference. First operand has 394 places, 340 transitions, 4041 flow. Second operand 10 states and 123 transitions. [2024-06-27 23:43:21,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 355 transitions, 4843 flow [2024-06-27 23:43:22,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 355 transitions, 4749 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-27 23:43:22,489 INFO L231 Difference]: Finished difference. Result has 395 places, 342 transitions, 4111 flow [2024-06-27 23:43:22,490 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3947, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4111, PETRI_PLACES=395, PETRI_TRANSITIONS=342} [2024-06-27 23:43:22,490 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 365 predicate places. [2024-06-27 23:43:22,490 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 342 transitions, 4111 flow [2024-06-27 23:43:22,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:43:22,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:43:22,490 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:43:22,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-27 23:43:22,491 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:43:22,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:43:22,491 INFO L85 PathProgramCache]: Analyzing trace with hash -740433887, now seen corresponding path program 21 times [2024-06-27 23:43:22,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:43:22,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445896143] [2024-06-27 23:43:22,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:43:22,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:43:22,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:43:23,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:43:23,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:43:23,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445896143] [2024-06-27 23:43:23,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445896143] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:43:23,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:43:23,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:43:23,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499683305] [2024-06-27 23:43:23,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:43:23,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:43:23,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:43:23,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:43:23,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:43:23,876 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:43:23,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 342 transitions, 4111 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:43:23,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:43:23,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:43:23,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:43:24,388 INFO L124 PetriNetUnfolderBase]: 743/1324 cut-off events. [2024-06-27 23:43:24,388 INFO L125 PetriNetUnfolderBase]: For 244464/244464 co-relation queries the response was YES. [2024-06-27 23:43:24,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11721 conditions, 1324 events. 743/1324 cut-off events. For 244464/244464 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 7159 event pairs, 94 based on Foata normal form. 2/1324 useless extension candidates. Maximal degree in co-relation 11539. Up to 1189 conditions per place. [2024-06-27 23:43:24,402 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 313 selfloop transitions, 44 changer transitions 0/359 dead transitions. [2024-06-27 23:43:24,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 404 places, 359 transitions, 5144 flow [2024-06-27 23:43:24,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:43:24,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:43:24,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-27 23:43:24,403 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-06-27 23:43:24,403 INFO L175 Difference]: Start difference. First operand has 395 places, 342 transitions, 4111 flow. Second operand 10 states and 125 transitions. [2024-06-27 23:43:24,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 404 places, 359 transitions, 5144 flow [2024-06-27 23:43:25,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 359 transitions, 5023 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-27 23:43:25,372 INFO L231 Difference]: Finished difference. Result has 397 places, 343 transitions, 4119 flow [2024-06-27 23:43:25,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3992, PETRI_DIFFERENCE_MINUEND_PLACES=387, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4119, PETRI_PLACES=397, PETRI_TRANSITIONS=343} [2024-06-27 23:43:25,378 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 367 predicate places. [2024-06-27 23:43:25,378 INFO L495 AbstractCegarLoop]: Abstraction has has 397 places, 343 transitions, 4119 flow [2024-06-27 23:43:25,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:43:25,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:43:25,379 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:43:25,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-27 23:43:25,379 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:43:25,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:43:25,380 INFO L85 PathProgramCache]: Analyzing trace with hash -739506522, now seen corresponding path program 25 times [2024-06-27 23:43:25,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:43:25,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691228747] [2024-06-27 23:43:25,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:43:25,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:43:25,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:43:26,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:43:26,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:43:26,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691228747] [2024-06-27 23:43:26,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691228747] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:43:26,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:43:26,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:43:26,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786933230] [2024-06-27 23:43:26,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:43:26,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:43:26,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:43:26,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:43:26,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:43:27,059 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:43:27,060 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 343 transitions, 4119 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:43:27,060 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:43:27,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:43:27,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:43:27,657 INFO L124 PetriNetUnfolderBase]: 741/1321 cut-off events. [2024-06-27 23:43:27,657 INFO L125 PetriNetUnfolderBase]: For 228913/228913 co-relation queries the response was YES. [2024-06-27 23:43:27,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11550 conditions, 1321 events. 741/1321 cut-off events. For 228913/228913 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 7176 event pairs, 100 based on Foata normal form. 1/1320 useless extension candidates. Maximal degree in co-relation 11368. Up to 1186 conditions per place. [2024-06-27 23:43:27,674 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 302 selfloop transitions, 55 changer transitions 0/359 dead transitions. [2024-06-27 23:43:27,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 406 places, 359 transitions, 4890 flow [2024-06-27 23:43:27,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:43:27,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:43:27,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-27 23:43:27,676 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4161290322580645 [2024-06-27 23:43:27,676 INFO L175 Difference]: Start difference. First operand has 397 places, 343 transitions, 4119 flow. Second operand 10 states and 129 transitions. [2024-06-27 23:43:27,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 406 places, 359 transitions, 4890 flow [2024-06-27 23:43:28,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 359 transitions, 4687 flow, removed 35 selfloop flow, removed 10 redundant places. [2024-06-27 23:43:28,575 INFO L231 Difference]: Finished difference. Result has 397 places, 343 transitions, 4034 flow [2024-06-27 23:43:28,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3916, PETRI_DIFFERENCE_MINUEND_PLACES=387, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4034, PETRI_PLACES=397, PETRI_TRANSITIONS=343} [2024-06-27 23:43:28,576 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 367 predicate places. [2024-06-27 23:43:28,576 INFO L495 AbstractCegarLoop]: Abstraction has has 397 places, 343 transitions, 4034 flow [2024-06-27 23:43:28,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:43:28,576 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:43:28,576 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:43:28,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-27 23:43:28,576 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:43:28,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:43:28,577 INFO L85 PathProgramCache]: Analyzing trace with hash -739511327, now seen corresponding path program 22 times [2024-06-27 23:43:28,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:43:28,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468690103] [2024-06-27 23:43:28,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:43:28,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:43:28,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:43:29,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:43:29,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:43:29,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468690103] [2024-06-27 23:43:29,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468690103] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:43:29,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:43:29,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:43:29,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352024218] [2024-06-27 23:43:29,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:43:29,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:43:29,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:43:29,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:43:29,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:43:29,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:43:29,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 343 transitions, 4034 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:43:29,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:43:29,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:43:29,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:43:30,454 INFO L124 PetriNetUnfolderBase]: 738/1316 cut-off events. [2024-06-27 23:43:30,455 INFO L125 PetriNetUnfolderBase]: For 220225/220225 co-relation queries the response was YES. [2024-06-27 23:43:30,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11089 conditions, 1316 events. 738/1316 cut-off events. For 220225/220225 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 7156 event pairs, 101 based on Foata normal form. 2/1316 useless extension candidates. Maximal degree in co-relation 10908. Up to 1224 conditions per place. [2024-06-27 23:43:30,472 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 315 selfloop transitions, 40 changer transitions 0/357 dead transitions. [2024-06-27 23:43:30,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 406 places, 357 transitions, 4778 flow [2024-06-27 23:43:30,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:43:30,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:43:30,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-27 23:43:30,473 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3967741935483871 [2024-06-27 23:43:30,473 INFO L175 Difference]: Start difference. First operand has 397 places, 343 transitions, 4034 flow. Second operand 10 states and 123 transitions. [2024-06-27 23:43:30,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 406 places, 357 transitions, 4778 flow [2024-06-27 23:43:31,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 357 transitions, 4595 flow, removed 17 selfloop flow, removed 10 redundant places. [2024-06-27 23:43:31,178 INFO L231 Difference]: Finished difference. Result has 397 places, 343 transitions, 3937 flow [2024-06-27 23:43:31,178 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3851, PETRI_DIFFERENCE_MINUEND_PLACES=387, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3937, PETRI_PLACES=397, PETRI_TRANSITIONS=343} [2024-06-27 23:43:31,178 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 367 predicate places. [2024-06-27 23:43:31,178 INFO L495 AbstractCegarLoop]: Abstraction has has 397 places, 343 transitions, 3937 flow [2024-06-27 23:43:31,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:43:31,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:43:31,179 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:43:31,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-27 23:43:31,179 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:43:31,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:43:31,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1467069468, now seen corresponding path program 26 times [2024-06-27 23:43:31,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:43:31,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240509463] [2024-06-27 23:43:31,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:43:31,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:43:31,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:43:32,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:43:32,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:43:32,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240509463] [2024-06-27 23:43:32,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240509463] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:43:32,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:43:32,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:43:32,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210553045] [2024-06-27 23:43:32,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:43:32,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:43:32,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:43:32,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:43:32,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:43:32,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:43:32,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 343 transitions, 3937 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:43:32,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:43:32,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:43:32,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:43:33,572 INFO L124 PetriNetUnfolderBase]: 753/1341 cut-off events. [2024-06-27 23:43:33,573 INFO L125 PetriNetUnfolderBase]: For 244102/244102 co-relation queries the response was YES. [2024-06-27 23:43:33,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11272 conditions, 1341 events. 753/1341 cut-off events. For 244102/244102 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 7301 event pairs, 85 based on Foata normal form. 5/1344 useless extension candidates. Maximal degree in co-relation 11091. Up to 965 conditions per place. [2024-06-27 23:43:33,590 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 247 selfloop transitions, 121 changer transitions 0/370 dead transitions. [2024-06-27 23:43:33,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 370 transitions, 5187 flow [2024-06-27 23:43:33,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:43:33,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:43:33,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 153 transitions. [2024-06-27 23:43:33,591 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44868035190615835 [2024-06-27 23:43:33,591 INFO L175 Difference]: Start difference. First operand has 397 places, 343 transitions, 3937 flow. Second operand 11 states and 153 transitions. [2024-06-27 23:43:33,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 370 transitions, 5187 flow [2024-06-27 23:43:34,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 370 transitions, 5091 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-27 23:43:34,330 INFO L231 Difference]: Finished difference. Result has 399 places, 350 transitions, 4296 flow [2024-06-27 23:43:34,330 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3843, PETRI_DIFFERENCE_MINUEND_PLACES=387, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4296, PETRI_PLACES=399, PETRI_TRANSITIONS=350} [2024-06-27 23:43:34,330 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 369 predicate places. [2024-06-27 23:43:34,331 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 350 transitions, 4296 flow [2024-06-27 23:43:34,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:43:34,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:43:34,331 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:43:34,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-27 23:43:34,331 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:43:34,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:43:34,331 INFO L85 PathProgramCache]: Analyzing trace with hash -1467069623, now seen corresponding path program 23 times [2024-06-27 23:43:34,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:43:34,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390384884] [2024-06-27 23:43:34,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:43:34,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:43:34,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:43:35,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:43:35,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:43:35,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390384884] [2024-06-27 23:43:35,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390384884] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:43:35,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:43:35,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:43:35,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823226898] [2024-06-27 23:43:35,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:43:35,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:43:35,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:43:35,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:43:35,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:43:35,909 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:43:35,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 350 transitions, 4296 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:43:35,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:43:35,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:43:35,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:43:36,444 INFO L124 PetriNetUnfolderBase]: 757/1349 cut-off events. [2024-06-27 23:43:36,444 INFO L125 PetriNetUnfolderBase]: For 225937/225937 co-relation queries the response was YES. [2024-06-27 23:43:36,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11639 conditions, 1349 events. 757/1349 cut-off events. For 225937/225937 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 7367 event pairs, 85 based on Foata normal form. 2/1349 useless extension candidates. Maximal degree in co-relation 11457. Up to 1216 conditions per place. [2024-06-27 23:43:36,502 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 303 selfloop transitions, 58 changer transitions 0/363 dead transitions. [2024-06-27 23:43:36,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 363 transitions, 5086 flow [2024-06-27 23:43:36,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:43:36,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:43:36,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-27 23:43:36,503 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4064516129032258 [2024-06-27 23:43:36,503 INFO L175 Difference]: Start difference. First operand has 399 places, 350 transitions, 4296 flow. Second operand 10 states and 126 transitions. [2024-06-27 23:43:36,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 363 transitions, 5086 flow [2024-06-27 23:43:37,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 363 transitions, 4825 flow, removed 63 selfloop flow, removed 12 redundant places. [2024-06-27 23:43:37,378 INFO L231 Difference]: Finished difference. Result has 397 places, 351 transitions, 4199 flow [2024-06-27 23:43:37,378 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4035, PETRI_DIFFERENCE_MINUEND_PLACES=387, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4199, PETRI_PLACES=397, PETRI_TRANSITIONS=351} [2024-06-27 23:43:37,379 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 367 predicate places. [2024-06-27 23:43:37,379 INFO L495 AbstractCegarLoop]: Abstraction has has 397 places, 351 transitions, 4199 flow [2024-06-27 23:43:37,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:43:37,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:43:37,379 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:43:37,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-27 23:43:37,379 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:43:37,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:43:37,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1467213773, now seen corresponding path program 24 times [2024-06-27 23:43:37,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:43:37,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450048635] [2024-06-27 23:43:37,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:43:37,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:43:37,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:43:38,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:43:38,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:43:38,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450048635] [2024-06-27 23:43:38,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450048635] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:43:38,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:43:38,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:43:38,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579267717] [2024-06-27 23:43:38,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:43:38,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:43:38,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:43:38,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:43:38,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:43:38,922 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:43:38,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 351 transitions, 4199 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:43:38,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:43:38,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:43:38,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:43:39,353 INFO L124 PetriNetUnfolderBase]: 761/1357 cut-off events. [2024-06-27 23:43:39,353 INFO L125 PetriNetUnfolderBase]: For 211084/211084 co-relation queries the response was YES. [2024-06-27 23:43:39,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11453 conditions, 1357 events. 761/1357 cut-off events. For 211084/211084 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 7408 event pairs, 85 based on Foata normal form. 2/1357 useless extension candidates. Maximal degree in co-relation 11275. Up to 1206 conditions per place. [2024-06-27 23:43:39,371 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 295 selfloop transitions, 67 changer transitions 0/364 dead transitions. [2024-06-27 23:43:39,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 364 transitions, 4993 flow [2024-06-27 23:43:39,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:43:39,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:43:39,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 120 transitions. [2024-06-27 23:43:39,372 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43010752688172044 [2024-06-27 23:43:39,372 INFO L175 Difference]: Start difference. First operand has 397 places, 351 transitions, 4199 flow. Second operand 9 states and 120 transitions. [2024-06-27 23:43:39,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 364 transitions, 4993 flow [2024-06-27 23:43:40,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 364 transitions, 4841 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-27 23:43:40,153 INFO L231 Difference]: Finished difference. Result has 398 places, 352 transitions, 4231 flow [2024-06-27 23:43:40,153 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4049, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4231, PETRI_PLACES=398, PETRI_TRANSITIONS=352} [2024-06-27 23:43:40,154 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 368 predicate places. [2024-06-27 23:43:40,154 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 352 transitions, 4231 flow [2024-06-27 23:43:40,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:43:40,154 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:43:40,154 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:43:40,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-27 23:43:40,154 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:43:40,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:43:40,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1467213618, now seen corresponding path program 27 times [2024-06-27 23:43:40,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:43:40,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913943033] [2024-06-27 23:43:40,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:43:40,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:43:40,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:43:41,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:43:41,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:43:41,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913943033] [2024-06-27 23:43:41,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913943033] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:43:41,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:43:41,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:43:41,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241556313] [2024-06-27 23:43:41,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:43:41,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:43:41,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:43:41,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:43:41,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:43:41,699 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:43:41,699 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 352 transitions, 4231 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:43:41,699 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:43:41,700 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:43:41,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:43:42,107 INFO L124 PetriNetUnfolderBase]: 764/1362 cut-off events. [2024-06-27 23:43:42,108 INFO L125 PetriNetUnfolderBase]: For 203317/203317 co-relation queries the response was YES. [2024-06-27 23:43:42,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11493 conditions, 1362 events. 764/1362 cut-off events. For 203317/203317 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 7453 event pairs, 88 based on Foata normal form. 1/1361 useless extension candidates. Maximal degree in co-relation 11315. Up to 1126 conditions per place. [2024-06-27 23:43:42,126 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 263 selfloop transitions, 104 changer transitions 0/369 dead transitions. [2024-06-27 23:43:42,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 369 transitions, 5390 flow [2024-06-27 23:43:42,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:43:42,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:43:42,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 133 transitions. [2024-06-27 23:43:42,127 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4290322580645161 [2024-06-27 23:43:42,127 INFO L175 Difference]: Start difference. First operand has 398 places, 352 transitions, 4231 flow. Second operand 10 states and 133 transitions. [2024-06-27 23:43:42,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 369 transitions, 5390 flow [2024-06-27 23:43:42,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 369 transitions, 5214 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-27 23:43:42,897 INFO L231 Difference]: Finished difference. Result has 400 places, 357 transitions, 4468 flow [2024-06-27 23:43:42,898 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4057, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4468, PETRI_PLACES=400, PETRI_TRANSITIONS=357} [2024-06-27 23:43:42,898 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 370 predicate places. [2024-06-27 23:43:42,898 INFO L495 AbstractCegarLoop]: Abstraction has has 400 places, 357 transitions, 4468 flow [2024-06-27 23:43:42,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:43:42,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:43:42,898 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:43:42,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-27 23:43:42,899 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:43:42,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:43:42,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1467217493, now seen corresponding path program 25 times [2024-06-27 23:43:42,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:43:42,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386819393] [2024-06-27 23:43:42,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:43:42,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:43:42,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:43:44,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:43:44,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:43:44,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386819393] [2024-06-27 23:43:44,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386819393] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:43:44,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:43:44,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:43:44,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046613158] [2024-06-27 23:43:44,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:43:44,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:43:44,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:43:44,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:43:44,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:43:44,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:43:44,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 357 transitions, 4468 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:43:44,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:43:44,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:43:44,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:43:44,925 INFO L124 PetriNetUnfolderBase]: 768/1370 cut-off events. [2024-06-27 23:43:44,925 INFO L125 PetriNetUnfolderBase]: For 211277/211277 co-relation queries the response was YES. [2024-06-27 23:43:44,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11656 conditions, 1370 events. 768/1370 cut-off events. For 211277/211277 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 7521 event pairs, 83 based on Foata normal form. 2/1370 useless extension candidates. Maximal degree in co-relation 11477. Up to 1164 conditions per place. [2024-06-27 23:43:44,943 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 296 selfloop transitions, 74 changer transitions 0/372 dead transitions. [2024-06-27 23:43:44,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 372 transitions, 5524 flow [2024-06-27 23:43:44,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:43:44,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:43:44,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-27 23:43:44,945 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4161290322580645 [2024-06-27 23:43:44,945 INFO L175 Difference]: Start difference. First operand has 400 places, 357 transitions, 4468 flow. Second operand 10 states and 129 transitions. [2024-06-27 23:43:44,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 372 transitions, 5524 flow [2024-06-27 23:43:45,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 372 transitions, 5345 flow, removed 41 selfloop flow, removed 6 redundant places. [2024-06-27 23:43:45,860 INFO L231 Difference]: Finished difference. Result has 404 places, 358 transitions, 4485 flow [2024-06-27 23:43:45,860 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4289, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4485, PETRI_PLACES=404, PETRI_TRANSITIONS=358} [2024-06-27 23:43:45,860 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 374 predicate places. [2024-06-27 23:43:45,860 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 358 transitions, 4485 flow [2024-06-27 23:43:45,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:43:45,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:43:45,864 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:43:45,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-27 23:43:45,865 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:43:45,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:43:45,866 INFO L85 PathProgramCache]: Analyzing trace with hash -1461492041, now seen corresponding path program 15 times [2024-06-27 23:43:45,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:43:45,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856059914] [2024-06-27 23:43:45,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:43:45,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:43:45,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:43:47,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:43:47,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:43:47,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856059914] [2024-06-27 23:43:47,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856059914] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:43:47,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:43:47,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:43:47,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885579479] [2024-06-27 23:43:47,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:43:47,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:43:47,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:43:47,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:43:47,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:43:47,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:43:47,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 358 transitions, 4485 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:43:47,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:43:47,650 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:43:47,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:43:48,356 INFO L124 PetriNetUnfolderBase]: 774/1381 cut-off events. [2024-06-27 23:43:48,356 INFO L125 PetriNetUnfolderBase]: For 214075/214075 co-relation queries the response was YES. [2024-06-27 23:43:48,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11824 conditions, 1381 events. 774/1381 cut-off events. For 214075/214075 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 7602 event pairs, 87 based on Foata normal form. 2/1381 useless extension candidates. Maximal degree in co-relation 11643. Up to 1029 conditions per place. [2024-06-27 23:43:48,374 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 261 selfloop transitions, 115 changer transitions 0/378 dead transitions. [2024-06-27 23:43:48,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 378 transitions, 5831 flow [2024-06-27 23:43:48,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:43:48,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:43:48,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-27 23:43:48,376 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40175953079178883 [2024-06-27 23:43:48,376 INFO L175 Difference]: Start difference. First operand has 404 places, 358 transitions, 4485 flow. Second operand 11 states and 137 transitions. [2024-06-27 23:43:48,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 378 transitions, 5831 flow [2024-06-27 23:43:49,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 404 places, 378 transitions, 5596 flow, removed 29 selfloop flow, removed 10 redundant places. [2024-06-27 23:43:49,162 INFO L231 Difference]: Finished difference. Result has 405 places, 360 transitions, 4529 flow [2024-06-27 23:43:49,162 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4254, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=358, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4529, PETRI_PLACES=405, PETRI_TRANSITIONS=360} [2024-06-27 23:43:49,162 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 375 predicate places. [2024-06-27 23:43:49,162 INFO L495 AbstractCegarLoop]: Abstraction has has 405 places, 360 transitions, 4529 flow [2024-06-27 23:43:49,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:43:49,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:43:49,163 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:43:49,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-27 23:43:49,163 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:43:49,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:43:49,163 INFO L85 PathProgramCache]: Analyzing trace with hash 1867349243, now seen corresponding path program 26 times [2024-06-27 23:43:49,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:43:49,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109635510] [2024-06-27 23:43:49,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:43:49,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:43:49,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:43:50,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:43:50,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:43:50,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109635510] [2024-06-27 23:43:50,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109635510] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:43:50,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:43:50,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:43:50,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115591835] [2024-06-27 23:43:50,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:43:50,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:43:50,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:43:50,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:43:50,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:43:50,783 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:43:50,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 360 transitions, 4529 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:43:50,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:43:50,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:43:50,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:43:51,252 INFO L124 PetriNetUnfolderBase]: 771/1375 cut-off events. [2024-06-27 23:43:51,252 INFO L125 PetriNetUnfolderBase]: For 198607/198607 co-relation queries the response was YES. [2024-06-27 23:43:51,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11409 conditions, 1375 events. 771/1375 cut-off events. For 198607/198607 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 7540 event pairs, 86 based on Foata normal form. 2/1375 useless extension candidates. Maximal degree in co-relation 11230. Up to 1242 conditions per place. [2024-06-27 23:43:51,270 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 309 selfloop transitions, 61 changer transitions 0/372 dead transitions. [2024-06-27 23:43:51,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 372 transitions, 5297 flow [2024-06-27 23:43:51,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:43:51,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:43:51,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-27 23:43:51,271 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-06-27 23:43:51,271 INFO L175 Difference]: Start difference. First operand has 405 places, 360 transitions, 4529 flow. Second operand 10 states and 125 transitions. [2024-06-27 23:43:51,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 372 transitions, 5297 flow [2024-06-27 23:43:51,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 372 transitions, 4931 flow, removed 38 selfloop flow, removed 11 redundant places. [2024-06-27 23:43:51,925 INFO L231 Difference]: Finished difference. Result has 404 places, 360 transitions, 4291 flow [2024-06-27 23:43:51,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4163, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4291, PETRI_PLACES=404, PETRI_TRANSITIONS=360} [2024-06-27 23:43:51,925 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 374 predicate places. [2024-06-27 23:43:51,926 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 360 transitions, 4291 flow [2024-06-27 23:43:51,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:43:51,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:43:51,926 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:43:51,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-27 23:43:51,926 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:43:51,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:43:51,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1461701508, now seen corresponding path program 28 times [2024-06-27 23:43:51,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:43:51,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960431663] [2024-06-27 23:43:51,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:43:51,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:43:51,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:43:53,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:43:53,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:43:53,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960431663] [2024-06-27 23:43:53,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960431663] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:43:53,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:43:53,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:43:53,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009991616] [2024-06-27 23:43:53,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:43:53,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:43:53,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:43:53,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:43:53,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:43:53,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:43:53,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 360 transitions, 4291 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:43:53,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:43:53,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:43:53,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:43:53,704 INFO L124 PetriNetUnfolderBase]: 774/1380 cut-off events. [2024-06-27 23:43:53,704 INFO L125 PetriNetUnfolderBase]: For 192623/192623 co-relation queries the response was YES. [2024-06-27 23:43:53,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11062 conditions, 1380 events. 774/1380 cut-off events. For 192623/192623 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 7581 event pairs, 87 based on Foata normal form. 1/1379 useless extension candidates. Maximal degree in co-relation 10885. Up to 1196 conditions per place. [2024-06-27 23:43:53,722 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 287 selfloop transitions, 84 changer transitions 0/373 dead transitions. [2024-06-27 23:43:53,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 373 transitions, 5123 flow [2024-06-27 23:43:53,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:43:53,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:43:53,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 122 transitions. [2024-06-27 23:43:53,723 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43727598566308246 [2024-06-27 23:43:53,723 INFO L175 Difference]: Start difference. First operand has 404 places, 360 transitions, 4291 flow. Second operand 9 states and 122 transitions. [2024-06-27 23:43:53,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 373 transitions, 5123 flow [2024-06-27 23:43:54,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 373 transitions, 4894 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-27 23:43:54,472 INFO L231 Difference]: Finished difference. Result has 403 places, 362 transitions, 4306 flow [2024-06-27 23:43:54,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4062, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4306, PETRI_PLACES=403, PETRI_TRANSITIONS=362} [2024-06-27 23:43:54,472 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 373 predicate places. [2024-06-27 23:43:54,472 INFO L495 AbstractCegarLoop]: Abstraction has has 403 places, 362 transitions, 4306 flow [2024-06-27 23:43:54,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:43:54,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:43:54,473 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:43:54,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-27 23:43:54,473 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:43:54,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:43:54,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1461499481, now seen corresponding path program 16 times [2024-06-27 23:43:54,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:43:54,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160134314] [2024-06-27 23:43:54,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:43:54,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:43:54,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:43:56,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:43:56,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:43:56,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160134314] [2024-06-27 23:43:56,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160134314] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:43:56,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:43:56,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:43:56,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713567045] [2024-06-27 23:43:56,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:43:56,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:43:56,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:43:56,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:43:56,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:43:56,106 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:43:56,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 362 transitions, 4306 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:43:56,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:43:56,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:43:56,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:43:56,708 INFO L124 PetriNetUnfolderBase]: 780/1391 cut-off events. [2024-06-27 23:43:56,709 INFO L125 PetriNetUnfolderBase]: For 200382/200382 co-relation queries the response was YES. [2024-06-27 23:43:56,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11095 conditions, 1391 events. 780/1391 cut-off events. For 200382/200382 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 7681 event pairs, 86 based on Foata normal form. 2/1391 useless extension candidates. Maximal degree in co-relation 10918. Up to 1035 conditions per place. [2024-06-27 23:43:56,728 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 268 selfloop transitions, 113 changer transitions 0/383 dead transitions. [2024-06-27 23:43:56,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 383 transitions, 5670 flow [2024-06-27 23:43:56,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:43:56,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:43:56,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-27 23:43:56,730 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40762463343108507 [2024-06-27 23:43:56,730 INFO L175 Difference]: Start difference. First operand has 403 places, 362 transitions, 4306 flow. Second operand 11 states and 139 transitions. [2024-06-27 23:43:56,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 383 transitions, 5670 flow [2024-06-27 23:43:57,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 404 places, 383 transitions, 5445 flow, removed 29 selfloop flow, removed 9 redundant places. [2024-06-27 23:43:57,531 INFO L231 Difference]: Finished difference. Result has 405 places, 364 transitions, 4350 flow [2024-06-27 23:43:57,531 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4085, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4350, PETRI_PLACES=405, PETRI_TRANSITIONS=364} [2024-06-27 23:43:57,531 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 375 predicate places. [2024-06-27 23:43:57,531 INFO L495 AbstractCegarLoop]: Abstraction has has 405 places, 364 transitions, 4350 flow [2024-06-27 23:43:57,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:43:57,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:43:57,532 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:43:57,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-27 23:43:57,532 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:43:57,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:43:57,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1461499698, now seen corresponding path program 29 times [2024-06-27 23:43:57,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:43:57,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581820981] [2024-06-27 23:43:57,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:43:57,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:43:57,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:43:58,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:43:58,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:43:58,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581820981] [2024-06-27 23:43:58,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581820981] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:43:58,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:43:58,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:43:58,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840497740] [2024-06-27 23:43:58,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:43:58,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:43:58,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:43:58,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:43:58,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:43:58,847 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:43:58,847 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 364 transitions, 4350 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:43:58,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:43:58,847 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:43:58,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:43:59,364 INFO L124 PetriNetUnfolderBase]: 783/1395 cut-off events. [2024-06-27 23:43:59,365 INFO L125 PetriNetUnfolderBase]: For 193237/193237 co-relation queries the response was YES. [2024-06-27 23:43:59,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11207 conditions, 1395 events. 783/1395 cut-off events. For 193237/193237 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 7699 event pairs, 87 based on Foata normal form. 1/1394 useless extension candidates. Maximal degree in co-relation 11030. Up to 1211 conditions per place. [2024-06-27 23:43:59,382 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 286 selfloop transitions, 89 changer transitions 0/377 dead transitions. [2024-06-27 23:43:59,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 377 transitions, 5194 flow [2024-06-27 23:43:59,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:43:59,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:43:59,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 121 transitions. [2024-06-27 23:43:59,383 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4336917562724014 [2024-06-27 23:43:59,383 INFO L175 Difference]: Start difference. First operand has 405 places, 364 transitions, 4350 flow. Second operand 9 states and 121 transitions. [2024-06-27 23:43:59,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 377 transitions, 5194 flow [2024-06-27 23:44:00,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 377 transitions, 4969 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-27 23:44:00,063 INFO L231 Difference]: Finished difference. Result has 406 places, 366 transitions, 4383 flow [2024-06-27 23:44:00,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4125, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4383, PETRI_PLACES=406, PETRI_TRANSITIONS=366} [2024-06-27 23:44:00,064 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 376 predicate places. [2024-06-27 23:44:00,064 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 366 transitions, 4383 flow [2024-06-27 23:44:00,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:44:00,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:44:00,064 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:44:00,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-27 23:44:00,064 INFO L420 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:44:00,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:44:00,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1461701291, now seen corresponding path program 17 times [2024-06-27 23:44:00,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:44:00,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961937804] [2024-06-27 23:44:00,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:44:00,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:44:00,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:44:01,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:44:01,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:44:01,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961937804] [2024-06-27 23:44:01,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961937804] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:44:01,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:44:01,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:44:01,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819936498] [2024-06-27 23:44:01,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:44:01,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:44:01,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:44:01,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:44:01,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:44:01,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:44:01,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 366 transitions, 4383 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:44:01,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:44:01,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:44:01,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:44:02,398 INFO L124 PetriNetUnfolderBase]: 779/1390 cut-off events. [2024-06-27 23:44:02,398 INFO L125 PetriNetUnfolderBase]: For 188288/188288 co-relation queries the response was YES. [2024-06-27 23:44:02,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10858 conditions, 1390 events. 779/1390 cut-off events. For 188288/188288 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 7679 event pairs, 85 based on Foata normal form. 2/1390 useless extension candidates. Maximal degree in co-relation 10681. Up to 1037 conditions per place. [2024-06-27 23:44:02,416 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 272 selfloop transitions, 110 changer transitions 0/384 dead transitions. [2024-06-27 23:44:02,416 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 384 transitions, 5469 flow [2024-06-27 23:44:02,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:44:02,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:44:02,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-27 23:44:02,418 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40762463343108507 [2024-06-27 23:44:02,418 INFO L175 Difference]: Start difference. First operand has 406 places, 366 transitions, 4383 flow. Second operand 11 states and 139 transitions. [2024-06-27 23:44:02,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 384 transitions, 5469 flow [2024-06-27 23:44:03,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 384 transitions, 5210 flow, removed 42 selfloop flow, removed 8 redundant places. [2024-06-27 23:44:03,191 INFO L231 Difference]: Finished difference. Result has 409 places, 366 transitions, 4351 flow [2024-06-27 23:44:03,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4126, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4351, PETRI_PLACES=409, PETRI_TRANSITIONS=366} [2024-06-27 23:44:03,191 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 379 predicate places. [2024-06-27 23:44:03,191 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 366 transitions, 4351 flow [2024-06-27 23:44:03,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:44:03,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:44:03,192 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:44:03,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-27 23:44:03,192 INFO L420 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:44:03,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:44:03,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1461707088, now seen corresponding path program 30 times [2024-06-27 23:44:03,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:44:03,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207967506] [2024-06-27 23:44:03,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:44:03,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:44:03,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:44:04,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:44:04,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:44:04,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207967506] [2024-06-27 23:44:04,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207967506] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:44:04,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:44:04,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:44:04,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962370018] [2024-06-27 23:44:04,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:44:04,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:44:04,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:44:04,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:44:04,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:44:04,953 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:44:04,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 366 transitions, 4351 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:44:04,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:44:04,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:44:04,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:44:05,610 INFO L124 PetriNetUnfolderBase]: 793/1412 cut-off events. [2024-06-27 23:44:05,610 INFO L125 PetriNetUnfolderBase]: For 204912/204912 co-relation queries the response was YES. [2024-06-27 23:44:05,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11236 conditions, 1412 events. 793/1412 cut-off events. For 204912/204912 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 7808 event pairs, 85 based on Foata normal form. 3/1413 useless extension candidates. Maximal degree in co-relation 11058. Up to 1000 conditions per place. [2024-06-27 23:44:05,628 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 253 selfloop transitions, 137 changer transitions 0/392 dead transitions. [2024-06-27 23:44:05,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 392 transitions, 5853 flow [2024-06-27 23:44:05,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:44:05,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:44:05,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 155 transitions. [2024-06-27 23:44:05,630 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-27 23:44:05,630 INFO L175 Difference]: Start difference. First operand has 409 places, 366 transitions, 4351 flow. Second operand 11 states and 155 transitions. [2024-06-27 23:44:05,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 392 transitions, 5853 flow [2024-06-27 23:44:06,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 392 transitions, 5586 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-27 23:44:06,393 INFO L231 Difference]: Finished difference. Result has 411 places, 370 transitions, 4505 flow [2024-06-27 23:44:06,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4084, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4505, PETRI_PLACES=411, PETRI_TRANSITIONS=370} [2024-06-27 23:44:06,393 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 381 predicate places. [2024-06-27 23:44:06,393 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 370 transitions, 4505 flow [2024-06-27 23:44:06,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:44:06,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:44:06,394 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:44:06,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-27 23:44:06,394 INFO L420 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:44:06,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:44:06,394 INFO L85 PathProgramCache]: Analyzing trace with hash 23948350, now seen corresponding path program 1 times [2024-06-27 23:44:06,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:44:06,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543668304] [2024-06-27 23:44:06,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:44:06,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:44:06,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:44:07,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:44:07,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:44:07,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543668304] [2024-06-27 23:44:07,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543668304] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:44:07,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:44:07,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:44:07,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319682850] [2024-06-27 23:44:07,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:44:07,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:44:07,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:44:07,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:44:07,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:44:07,980 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:44:07,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 370 transitions, 4505 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:44:07,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:44:07,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:44:07,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:44:08,592 INFO L124 PetriNetUnfolderBase]: 804/1434 cut-off events. [2024-06-27 23:44:08,592 INFO L125 PetriNetUnfolderBase]: For 217680/217680 co-relation queries the response was YES. [2024-06-27 23:44:08,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11755 conditions, 1434 events. 804/1434 cut-off events. For 217680/217680 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 7978 event pairs, 158 based on Foata normal form. 2/1434 useless extension candidates. Maximal degree in co-relation 11576. Up to 1254 conditions per place. [2024-06-27 23:44:08,609 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 357 selfloop transitions, 33 changer transitions 0/392 dead transitions. [2024-06-27 23:44:08,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 392 transitions, 5645 flow [2024-06-27 23:44:08,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:44:08,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:44:08,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 137 transitions. [2024-06-27 23:44:08,610 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3682795698924731 [2024-06-27 23:44:08,611 INFO L175 Difference]: Start difference. First operand has 411 places, 370 transitions, 4505 flow. Second operand 12 states and 137 transitions. [2024-06-27 23:44:08,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 422 places, 392 transitions, 5645 flow [2024-06-27 23:44:09,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 414 places, 392 transitions, 5399 flow, removed 49 selfloop flow, removed 8 redundant places. [2024-06-27 23:44:09,543 INFO L231 Difference]: Finished difference. Result has 415 places, 372 transitions, 4395 flow [2024-06-27 23:44:09,556 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4263, PETRI_DIFFERENCE_MINUEND_PLACES=403, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4395, PETRI_PLACES=415, PETRI_TRANSITIONS=372} [2024-06-27 23:44:09,556 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 385 predicate places. [2024-06-27 23:44:09,556 INFO L495 AbstractCegarLoop]: Abstraction has has 415 places, 372 transitions, 4395 flow [2024-06-27 23:44:09,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:44:09,557 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:44:09,557 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:44:09,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-27 23:44:09,557 INFO L420 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:44:09,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:44:09,557 INFO L85 PathProgramCache]: Analyzing trace with hash -1636302906, now seen corresponding path program 2 times [2024-06-27 23:44:09,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:44:09,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550109968] [2024-06-27 23:44:09,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:44:09,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:44:09,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:44:11,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:44:11,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:44:11,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550109968] [2024-06-27 23:44:11,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550109968] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:44:11,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:44:11,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:44:11,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929256048] [2024-06-27 23:44:11,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:44:11,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:44:11,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:44:11,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:44:11,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:44:11,268 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:44:11,269 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 372 transitions, 4395 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:44:11,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:44:11,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:44:11,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:44:11,821 INFO L124 PetriNetUnfolderBase]: 815/1455 cut-off events. [2024-06-27 23:44:11,822 INFO L125 PetriNetUnfolderBase]: For 227721/227721 co-relation queries the response was YES. [2024-06-27 23:44:11,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12050 conditions, 1455 events. 815/1455 cut-off events. For 227721/227721 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 8133 event pairs, 162 based on Foata normal form. 2/1455 useless extension candidates. Maximal degree in co-relation 11870. Up to 1349 conditions per place. [2024-06-27 23:44:11,841 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 357 selfloop transitions, 33 changer transitions 0/392 dead transitions. [2024-06-27 23:44:11,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 392 transitions, 5531 flow [2024-06-27 23:44:11,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 23:44:11,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 23:44:11,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 143 transitions. [2024-06-27 23:44:11,842 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-27 23:44:11,842 INFO L175 Difference]: Start difference. First operand has 415 places, 372 transitions, 4395 flow. Second operand 13 states and 143 transitions. [2024-06-27 23:44:11,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 392 transitions, 5531 flow [2024-06-27 23:44:12,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 419 places, 392 transitions, 5426 flow, removed 32 selfloop flow, removed 8 redundant places. [2024-06-27 23:44:12,826 INFO L231 Difference]: Finished difference. Result has 420 places, 374 transitions, 4426 flow [2024-06-27 23:44:12,827 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4314, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4426, PETRI_PLACES=420, PETRI_TRANSITIONS=374} [2024-06-27 23:44:12,832 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 390 predicate places. [2024-06-27 23:44:12,832 INFO L495 AbstractCegarLoop]: Abstraction has has 420 places, 374 transitions, 4426 flow [2024-06-27 23:44:12,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:44:12,833 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:44:12,833 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:44:12,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-27 23:44:12,833 INFO L420 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:44:12,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:44:12,834 INFO L85 PathProgramCache]: Analyzing trace with hash 82160770, now seen corresponding path program 3 times [2024-06-27 23:44:12,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:44:12,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910670348] [2024-06-27 23:44:12,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:44:12,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:44:12,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:44:14,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:44:14,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:44:14,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910670348] [2024-06-27 23:44:14,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910670348] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:44:14,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:44:14,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:44:14,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645025026] [2024-06-27 23:44:14,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:44:14,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:44:14,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:44:14,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:44:14,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:44:14,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:44:14,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 374 transitions, 4426 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:44:14,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:44:14,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:44:14,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:44:15,066 INFO L124 PetriNetUnfolderBase]: 819/1463 cut-off events. [2024-06-27 23:44:15,066 INFO L125 PetriNetUnfolderBase]: For 232194/232194 co-relation queries the response was YES. [2024-06-27 23:44:15,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12042 conditions, 1463 events. 819/1463 cut-off events. For 232194/232194 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 8196 event pairs, 168 based on Foata normal form. 2/1463 useless extension candidates. Maximal degree in co-relation 11860. Up to 1392 conditions per place. [2024-06-27 23:44:15,085 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 356 selfloop transitions, 32 changer transitions 0/390 dead transitions. [2024-06-27 23:44:15,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 432 places, 390 transitions, 5262 flow [2024-06-27 23:44:15,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 23:44:15,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 23:44:15,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 138 transitions. [2024-06-27 23:44:15,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3424317617866005 [2024-06-27 23:44:15,086 INFO L175 Difference]: Start difference. First operand has 420 places, 374 transitions, 4426 flow. Second operand 13 states and 138 transitions. [2024-06-27 23:44:15,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 432 places, 390 transitions, 5262 flow [2024-06-27 23:44:16,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 390 transitions, 5205 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-27 23:44:16,050 INFO L231 Difference]: Finished difference. Result has 424 places, 375 transitions, 4461 flow [2024-06-27 23:44:16,050 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4369, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=342, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4461, PETRI_PLACES=424, PETRI_TRANSITIONS=375} [2024-06-27 23:44:16,051 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 394 predicate places. [2024-06-27 23:44:16,051 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 375 transitions, 4461 flow [2024-06-27 23:44:16,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:44:16,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:44:16,051 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:44:16,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-27 23:44:16,051 INFO L420 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:44:16,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:44:16,052 INFO L85 PathProgramCache]: Analyzing trace with hash 82160956, now seen corresponding path program 1 times [2024-06-27 23:44:16,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:44:16,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296065793] [2024-06-27 23:44:16,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:44:16,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:44:16,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:44:17,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:44:17,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:44:17,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296065793] [2024-06-27 23:44:17,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296065793] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:44:17,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:44:17,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:44:17,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555932305] [2024-06-27 23:44:17,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:44:17,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:44:17,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:44:17,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:44:17,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:44:17,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:44:17,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 375 transitions, 4461 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:44:17,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:44:17,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:44:17,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:44:18,667 INFO L124 PetriNetUnfolderBase]: 841/1499 cut-off events. [2024-06-27 23:44:18,667 INFO L125 PetriNetUnfolderBase]: For 252878/252878 co-relation queries the response was YES. [2024-06-27 23:44:18,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12726 conditions, 1499 events. 841/1499 cut-off events. For 252878/252878 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 8429 event pairs, 172 based on Foata normal form. 2/1499 useless extension candidates. Maximal degree in co-relation 12542. Up to 1401 conditions per place. [2024-06-27 23:44:18,688 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 361 selfloop transitions, 36 changer transitions 0/399 dead transitions. [2024-06-27 23:44:18,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 436 places, 399 transitions, 5718 flow [2024-06-27 23:44:18,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 23:44:18,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 23:44:18,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 144 transitions. [2024-06-27 23:44:18,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3573200992555831 [2024-06-27 23:44:18,689 INFO L175 Difference]: Start difference. First operand has 424 places, 375 transitions, 4461 flow. Second operand 13 states and 144 transitions. [2024-06-27 23:44:18,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 436 places, 399 transitions, 5718 flow [2024-06-27 23:44:19,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 399 transitions, 5640 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-06-27 23:44:19,736 INFO L231 Difference]: Finished difference. Result has 427 places, 381 transitions, 4634 flow [2024-06-27 23:44:19,736 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4383, PETRI_DIFFERENCE_MINUEND_PLACES=413, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4634, PETRI_PLACES=427, PETRI_TRANSITIONS=381} [2024-06-27 23:44:19,736 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 397 predicate places. [2024-06-27 23:44:19,737 INFO L495 AbstractCegarLoop]: Abstraction has has 427 places, 381 transitions, 4634 flow [2024-06-27 23:44:19,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:44:19,737 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:44:19,737 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:44:19,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-27 23:44:19,737 INFO L420 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:44:19,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:44:19,738 INFO L85 PathProgramCache]: Analyzing trace with hash 210442782, now seen corresponding path program 4 times [2024-06-27 23:44:19,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:44:19,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563433820] [2024-06-27 23:44:19,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:44:19,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:44:19,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:44:21,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:44:21,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:44:21,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563433820] [2024-06-27 23:44:21,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563433820] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:44:21,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:44:21,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:44:21,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99629699] [2024-06-27 23:44:21,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:44:21,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:44:21,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:44:21,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:44:21,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:44:21,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:44:21,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 427 places, 381 transitions, 4634 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:44:21,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:44:21,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:44:21,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:44:22,000 INFO L124 PetriNetUnfolderBase]: 838/1494 cut-off events. [2024-06-27 23:44:22,000 INFO L125 PetriNetUnfolderBase]: For 240965/240965 co-relation queries the response was YES. [2024-06-27 23:44:22,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12521 conditions, 1494 events. 838/1494 cut-off events. For 240965/240965 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 8392 event pairs, 169 based on Foata normal form. 2/1494 useless extension candidates. Maximal degree in co-relation 12335. Up to 1409 conditions per place. [2024-06-27 23:44:22,023 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 362 selfloop transitions, 33 changer transitions 0/397 dead transitions. [2024-06-27 23:44:22,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 438 places, 397 transitions, 5464 flow [2024-06-27 23:44:22,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:44:22,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:44:22,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 134 transitions. [2024-06-27 23:44:22,024 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3602150537634409 [2024-06-27 23:44:22,024 INFO L175 Difference]: Start difference. First operand has 427 places, 381 transitions, 4634 flow. Second operand 12 states and 134 transitions. [2024-06-27 23:44:22,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 438 places, 397 transitions, 5464 flow [2024-06-27 23:44:23,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 429 places, 397 transitions, 5338 flow, removed 48 selfloop flow, removed 9 redundant places. [2024-06-27 23:44:23,076 INFO L231 Difference]: Finished difference. Result has 430 places, 381 transitions, 4578 flow [2024-06-27 23:44:23,076 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4508, PETRI_DIFFERENCE_MINUEND_PLACES=418, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=348, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4578, PETRI_PLACES=430, PETRI_TRANSITIONS=381} [2024-06-27 23:44:23,077 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 400 predicate places. [2024-06-27 23:44:23,077 INFO L495 AbstractCegarLoop]: Abstraction has has 430 places, 381 transitions, 4578 flow [2024-06-27 23:44:23,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:44:23,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:44:23,077 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:44:23,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-27 23:44:23,077 INFO L420 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:44:23,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:44:23,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1058260626, now seen corresponding path program 5 times [2024-06-27 23:44:23,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:44:23,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990427756] [2024-06-27 23:44:23,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:44:23,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:44:23,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:44:24,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:44:24,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:44:24,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990427756] [2024-06-27 23:44:24,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990427756] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:44:24,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:44:24,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:44:24,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840451204] [2024-06-27 23:44:24,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:44:24,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:44:24,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:44:24,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:44:24,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:44:24,743 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:44:24,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 381 transitions, 4578 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:44:24,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:44:24,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:44:24,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:44:25,333 INFO L124 PetriNetUnfolderBase]: 842/1502 cut-off events. [2024-06-27 23:44:25,333 INFO L125 PetriNetUnfolderBase]: For 243651/243651 co-relation queries the response was YES. [2024-06-27 23:44:25,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12487 conditions, 1502 events. 842/1502 cut-off events. For 243651/243651 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 8474 event pairs, 171 based on Foata normal form. 2/1502 useless extension candidates. Maximal degree in co-relation 12299. Up to 1460 conditions per place. [2024-06-27 23:44:25,353 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 374 selfloop transitions, 19 changer transitions 0/395 dead transitions. [2024-06-27 23:44:25,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 395 transitions, 5418 flow [2024-06-27 23:44:25,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:44:25,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:44:25,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 123 transitions. [2024-06-27 23:44:25,355 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33064516129032256 [2024-06-27 23:44:25,355 INFO L175 Difference]: Start difference. First operand has 430 places, 381 transitions, 4578 flow. Second operand 12 states and 123 transitions. [2024-06-27 23:44:25,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 441 places, 395 transitions, 5418 flow [2024-06-27 23:44:26,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 430 places, 395 transitions, 5346 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-06-27 23:44:26,405 INFO L231 Difference]: Finished difference. Result has 431 places, 382 transitions, 4572 flow [2024-06-27 23:44:26,405 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4506, PETRI_DIFFERENCE_MINUEND_PLACES=419, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4572, PETRI_PLACES=431, PETRI_TRANSITIONS=382} [2024-06-27 23:44:26,406 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 401 predicate places. [2024-06-27 23:44:26,406 INFO L495 AbstractCegarLoop]: Abstraction has has 431 places, 382 transitions, 4572 flow [2024-06-27 23:44:26,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:44:26,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:44:26,406 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:44:26,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-27 23:44:26,406 INFO L420 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:44:26,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:44:26,407 INFO L85 PathProgramCache]: Analyzing trace with hash -1520718600, now seen corresponding path program 2 times [2024-06-27 23:44:26,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:44:26,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982049743] [2024-06-27 23:44:26,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:44:26,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:44:26,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:44:28,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:44:28,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:44:28,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982049743] [2024-06-27 23:44:28,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982049743] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:44:28,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:44:28,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:44:28,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039190053] [2024-06-27 23:44:28,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:44:28,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:44:28,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:44:28,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:44:28,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:44:28,340 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:44:28,341 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 431 places, 382 transitions, 4572 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:44:28,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:44:28,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:44:28,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:44:28,942 INFO L124 PetriNetUnfolderBase]: 848/1512 cut-off events. [2024-06-27 23:44:28,942 INFO L125 PetriNetUnfolderBase]: For 247765/247765 co-relation queries the response was YES. [2024-06-27 23:44:28,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12600 conditions, 1512 events. 848/1512 cut-off events. For 247765/247765 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 8530 event pairs, 171 based on Foata normal form. 2/1512 useless extension candidates. Maximal degree in co-relation 12411. Up to 1470 conditions per place. [2024-06-27 23:44:28,963 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 375 selfloop transitions, 20 changer transitions 0/397 dead transitions. [2024-06-27 23:44:28,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 397 transitions, 5454 flow [2024-06-27 23:44:28,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:44:28,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:44:28,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 124 transitions. [2024-06-27 23:44:28,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-27 23:44:28,965 INFO L175 Difference]: Start difference. First operand has 431 places, 382 transitions, 4572 flow. Second operand 12 states and 124 transitions. [2024-06-27 23:44:28,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 442 places, 397 transitions, 5454 flow [2024-06-27 23:44:30,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 397 transitions, 5400 flow, removed 9 selfloop flow, removed 10 redundant places. [2024-06-27 23:44:30,085 INFO L231 Difference]: Finished difference. Result has 433 places, 384 transitions, 4619 flow [2024-06-27 23:44:30,085 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4518, PETRI_DIFFERENCE_MINUEND_PLACES=421, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=382, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4619, PETRI_PLACES=433, PETRI_TRANSITIONS=384} [2024-06-27 23:44:30,085 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 403 predicate places. [2024-06-27 23:44:30,085 INFO L495 AbstractCegarLoop]: Abstraction has has 433 places, 384 transitions, 4619 flow [2024-06-27 23:44:30,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:44:30,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:44:30,086 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:44:30,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-27 23:44:30,086 INFO L420 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:44:30,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:44:30,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1520891766, now seen corresponding path program 6 times [2024-06-27 23:44:30,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:44:30,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990605349] [2024-06-27 23:44:30,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:44:30,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:44:30,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:44:31,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:44:31,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:44:31,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990605349] [2024-06-27 23:44:31,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990605349] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:44:31,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:44:31,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:44:31,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433627770] [2024-06-27 23:44:31,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:44:31,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:44:31,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:44:31,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:44:31,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:44:31,844 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:44:31,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 384 transitions, 4619 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:44:31,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:44:31,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:44:31,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:44:32,491 INFO L124 PetriNetUnfolderBase]: 852/1520 cut-off events. [2024-06-27 23:44:32,491 INFO L125 PetriNetUnfolderBase]: For 251654/251654 co-relation queries the response was YES. [2024-06-27 23:44:32,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12671 conditions, 1520 events. 852/1520 cut-off events. For 251654/251654 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 8594 event pairs, 173 based on Foata normal form. 2/1520 useless extension candidates. Maximal degree in co-relation 12481. Up to 1472 conditions per place. [2024-06-27 23:44:32,512 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 374 selfloop transitions, 22 changer transitions 0/398 dead transitions. [2024-06-27 23:44:32,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 398 transitions, 5467 flow [2024-06-27 23:44:32,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:44:32,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:44:32,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 125 transitions. [2024-06-27 23:44:32,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33602150537634407 [2024-06-27 23:44:32,514 INFO L175 Difference]: Start difference. First operand has 433 places, 384 transitions, 4619 flow. Second operand 12 states and 125 transitions. [2024-06-27 23:44:32,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 398 transitions, 5467 flow [2024-06-27 23:44:33,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 434 places, 398 transitions, 5390 flow, removed 20 selfloop flow, removed 10 redundant places. [2024-06-27 23:44:33,593 INFO L231 Difference]: Finished difference. Result has 435 places, 385 transitions, 4616 flow [2024-06-27 23:44:33,593 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4542, PETRI_DIFFERENCE_MINUEND_PLACES=423, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=384, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4616, PETRI_PLACES=435, PETRI_TRANSITIONS=385} [2024-06-27 23:44:33,593 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 405 predicate places. [2024-06-27 23:44:33,593 INFO L495 AbstractCegarLoop]: Abstraction has has 435 places, 385 transitions, 4616 flow [2024-06-27 23:44:33,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:44:33,593 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:44:33,594 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:44:33,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-06-27 23:44:33,594 INFO L420 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:44:33,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:44:33,594 INFO L85 PathProgramCache]: Analyzing trace with hash -1520891580, now seen corresponding path program 3 times [2024-06-27 23:44:33,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:44:33,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20261382] [2024-06-27 23:44:33,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:44:33,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:44:33,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:44:35,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:44:35,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:44:35,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20261382] [2024-06-27 23:44:35,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20261382] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:44:35,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:44:35,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:44:35,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125408087] [2024-06-27 23:44:35,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:44:35,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:44:35,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:44:35,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:44:35,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:44:35,414 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:44:35,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 435 places, 385 transitions, 4616 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:44:35,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:44:35,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:44:35,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:44:36,052 INFO L124 PetriNetUnfolderBase]: 858/1530 cut-off events. [2024-06-27 23:44:36,052 INFO L125 PetriNetUnfolderBase]: For 255439/255439 co-relation queries the response was YES. [2024-06-27 23:44:36,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12763 conditions, 1530 events. 858/1530 cut-off events. For 255439/255439 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 8641 event pairs, 173 based on Foata normal form. 2/1530 useless extension candidates. Maximal degree in co-relation 12572. Up to 1476 conditions per place. [2024-06-27 23:44:36,076 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 375 selfloop transitions, 24 changer transitions 0/401 dead transitions. [2024-06-27 23:44:36,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 446 places, 401 transitions, 5520 flow [2024-06-27 23:44:36,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:44:36,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:44:36,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 128 transitions. [2024-06-27 23:44:36,077 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34408602150537637 [2024-06-27 23:44:36,077 INFO L175 Difference]: Start difference. First operand has 435 places, 385 transitions, 4616 flow. Second operand 12 states and 128 transitions. [2024-06-27 23:44:36,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 446 places, 401 transitions, 5520 flow [2024-06-27 23:44:37,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 401 transitions, 5458 flow, removed 10 selfloop flow, removed 10 redundant places. [2024-06-27 23:44:37,318 INFO L231 Difference]: Finished difference. Result has 437 places, 387 transitions, 4667 flow [2024-06-27 23:44:37,318 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4554, PETRI_DIFFERENCE_MINUEND_PLACES=425, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4667, PETRI_PLACES=437, PETRI_TRANSITIONS=387} [2024-06-27 23:44:37,318 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 407 predicate places. [2024-06-27 23:44:37,318 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 387 transitions, 4667 flow [2024-06-27 23:44:37,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:44:37,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:44:37,319 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:44:37,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-06-27 23:44:37,319 INFO L420 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:44:37,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:44:37,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1397078404, now seen corresponding path program 7 times [2024-06-27 23:44:37,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:44:37,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484382746] [2024-06-27 23:44:37,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:44:37,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:44:37,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:44:39,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:44:39,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:44:39,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484382746] [2024-06-27 23:44:39,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484382746] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:44:39,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:44:39,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:44:39,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027845323] [2024-06-27 23:44:39,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:44:39,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:44:39,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:44:39,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:44:39,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:44:39,208 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:44:39,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 387 transitions, 4667 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:44:39,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:44:39,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:44:39,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:44:39,778 INFO L124 PetriNetUnfolderBase]: 869/1551 cut-off events. [2024-06-27 23:44:39,778 INFO L125 PetriNetUnfolderBase]: For 277105/277105 co-relation queries the response was YES. [2024-06-27 23:44:39,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13200 conditions, 1551 events. 869/1551 cut-off events. For 277105/277105 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 8799 event pairs, 174 based on Foata normal form. 2/1551 useless extension candidates. Maximal degree in co-relation 13008. Up to 1477 conditions per place. [2024-06-27 23:44:39,799 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 375 selfloop transitions, 27 changer transitions 0/404 dead transitions. [2024-06-27 23:44:39,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 404 transitions, 5823 flow [2024-06-27 23:44:39,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:44:39,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:44:39,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-27 23:44:39,801 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-27 23:44:39,801 INFO L175 Difference]: Start difference. First operand has 437 places, 387 transitions, 4667 flow. Second operand 11 states and 124 transitions. [2024-06-27 23:44:39,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 404 transitions, 5823 flow [2024-06-27 23:44:40,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 437 places, 404 transitions, 5734 flow, removed 22 selfloop flow, removed 10 redundant places. [2024-06-27 23:44:40,999 INFO L231 Difference]: Finished difference. Result has 438 places, 389 transitions, 4690 flow [2024-06-27 23:44:40,999 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4578, PETRI_DIFFERENCE_MINUEND_PLACES=427, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4690, PETRI_PLACES=438, PETRI_TRANSITIONS=389} [2024-06-27 23:44:40,999 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 408 predicate places. [2024-06-27 23:44:41,000 INFO L495 AbstractCegarLoop]: Abstraction has has 438 places, 389 transitions, 4690 flow [2024-06-27 23:44:41,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:44:41,000 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:44:41,000 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:44:41,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-06-27 23:44:41,000 INFO L420 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:44:41,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:44:41,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1392609754, now seen corresponding path program 8 times [2024-06-27 23:44:41,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:44:41,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880331678] [2024-06-27 23:44:41,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:44:41,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:44:41,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:44:42,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:44:42,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:44:42,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880331678] [2024-06-27 23:44:42,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880331678] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:44:42,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:44:42,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:44:42,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382330228] [2024-06-27 23:44:42,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:44:42,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:44:42,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:44:42,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:44:42,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:44:42,765 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:44:42,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 438 places, 389 transitions, 4690 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:44:42,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:44:42,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:44:42,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:44:43,426 INFO L124 PetriNetUnfolderBase]: 873/1559 cut-off events. [2024-06-27 23:44:43,426 INFO L125 PetriNetUnfolderBase]: For 280941/280941 co-relation queries the response was YES. [2024-06-27 23:44:43,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13242 conditions, 1559 events. 873/1559 cut-off events. For 280941/280941 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 8878 event pairs, 176 based on Foata normal form. 2/1559 useless extension candidates. Maximal degree in co-relation 13049. Up to 1491 conditions per place. [2024-06-27 23:44:43,450 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 378 selfloop transitions, 24 changer transitions 0/404 dead transitions. [2024-06-27 23:44:43,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 404 transitions, 5556 flow [2024-06-27 23:44:43,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:44:43,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:44:43,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 126 transitions. [2024-06-27 23:44:43,451 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-27 23:44:43,451 INFO L175 Difference]: Start difference. First operand has 438 places, 389 transitions, 4690 flow. Second operand 12 states and 126 transitions. [2024-06-27 23:44:43,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 449 places, 404 transitions, 5556 flow [2024-06-27 23:44:44,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 442 places, 404 transitions, 5499 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-27 23:44:44,714 INFO L231 Difference]: Finished difference. Result has 443 places, 390 transitions, 4715 flow [2024-06-27 23:44:44,714 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4633, PETRI_DIFFERENCE_MINUEND_PLACES=431, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=365, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4715, PETRI_PLACES=443, PETRI_TRANSITIONS=390} [2024-06-27 23:44:44,714 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 413 predicate places. [2024-06-27 23:44:44,715 INFO L495 AbstractCegarLoop]: Abstraction has has 443 places, 390 transitions, 4715 flow [2024-06-27 23:44:44,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:44:44,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:44:44,715 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:44:44,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2024-06-27 23:44:44,715 INFO L420 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:44:44,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:44:44,715 INFO L85 PathProgramCache]: Analyzing trace with hash -1397193724, now seen corresponding path program 9 times [2024-06-27 23:44:44,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:44:44,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682145707] [2024-06-27 23:44:44,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:44:44,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:44:44,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:44:46,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:44:46,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:44:46,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682145707] [2024-06-27 23:44:46,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682145707] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:44:46,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:44:46,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:44:46,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217079188] [2024-06-27 23:44:46,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:44:46,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:44:46,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:44:46,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:44:46,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:44:46,322 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:44:46,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 390 transitions, 4715 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:44:46,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:44:46,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:44:46,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:44:46,936 INFO L124 PetriNetUnfolderBase]: 870/1554 cut-off events. [2024-06-27 23:44:46,936 INFO L125 PetriNetUnfolderBase]: For 266994/266994 co-relation queries the response was YES. [2024-06-27 23:44:46,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12964 conditions, 1554 events. 870/1554 cut-off events. For 266994/266994 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 8858 event pairs, 173 based on Foata normal form. 2/1554 useless extension candidates. Maximal degree in co-relation 12769. Up to 1432 conditions per place. [2024-06-27 23:44:46,955 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 373 selfloop transitions, 31 changer transitions 0/406 dead transitions. [2024-06-27 23:44:46,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 406 transitions, 5829 flow [2024-06-27 23:44:46,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:44:46,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:44:46,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-27 23:44:46,957 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-27 23:44:46,957 INFO L175 Difference]: Start difference. First operand has 443 places, 390 transitions, 4715 flow. Second operand 11 states and 124 transitions. [2024-06-27 23:44:46,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 453 places, 406 transitions, 5829 flow [2024-06-27 23:44:48,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 443 places, 406 transitions, 5759 flow, removed 12 selfloop flow, removed 10 redundant places. [2024-06-27 23:44:48,075 INFO L231 Difference]: Finished difference. Result has 444 places, 390 transitions, 4711 flow [2024-06-27 23:44:48,076 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4645, PETRI_DIFFERENCE_MINUEND_PLACES=433, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=390, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=359, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4711, PETRI_PLACES=444, PETRI_TRANSITIONS=390} [2024-06-27 23:44:48,076 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 414 predicate places. [2024-06-27 23:44:48,076 INFO L495 AbstractCegarLoop]: Abstraction has has 444 places, 390 transitions, 4711 flow [2024-06-27 23:44:48,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:44:48,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:44:48,076 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:44:48,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2024-06-27 23:44:48,077 INFO L420 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:44:48,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:44:48,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1397073754, now seen corresponding path program 10 times [2024-06-27 23:44:48,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:44:48,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867473681] [2024-06-27 23:44:48,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:44:48,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:44:48,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:44:49,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:44:49,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:44:49,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867473681] [2024-06-27 23:44:49,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867473681] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:44:49,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:44:49,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:44:49,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111145383] [2024-06-27 23:44:49,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:44:49,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:44:49,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:44:49,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:44:49,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:44:49,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:44:49,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 444 places, 390 transitions, 4711 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:44:49,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:44:49,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:44:49,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:44:50,494 INFO L124 PetriNetUnfolderBase]: 867/1549 cut-off events. [2024-06-27 23:44:50,494 INFO L125 PetriNetUnfolderBase]: For 252538/252538 co-relation queries the response was YES. [2024-06-27 23:44:50,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12670 conditions, 1549 events. 867/1549 cut-off events. For 252538/252538 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 8830 event pairs, 176 based on Foata normal form. 2/1549 useless extension candidates. Maximal degree in co-relation 12474. Up to 1492 conditions per place. [2024-06-27 23:44:50,512 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 375 selfloop transitions, 26 changer transitions 0/403 dead transitions. [2024-06-27 23:44:50,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 403 transitions, 5545 flow [2024-06-27 23:44:50,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:44:50,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:44:50,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 127 transitions. [2024-06-27 23:44:50,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34139784946236557 [2024-06-27 23:44:50,513 INFO L175 Difference]: Start difference. First operand has 444 places, 390 transitions, 4711 flow. Second operand 12 states and 127 transitions. [2024-06-27 23:44:50,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 403 transitions, 5545 flow [2024-06-27 23:44:51,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 443 places, 403 transitions, 5385 flow, removed 23 selfloop flow, removed 12 redundant places. [2024-06-27 23:44:51,624 INFO L231 Difference]: Finished difference. Result has 444 places, 390 transitions, 4607 flow [2024-06-27 23:44:51,624 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4551, PETRI_DIFFERENCE_MINUEND_PLACES=432, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=390, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=364, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4607, PETRI_PLACES=444, PETRI_TRANSITIONS=390} [2024-06-27 23:44:51,624 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 414 predicate places. [2024-06-27 23:44:51,624 INFO L495 AbstractCegarLoop]: Abstraction has has 444 places, 390 transitions, 4607 flow [2024-06-27 23:44:51,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:44:51,624 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:44:51,625 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:44:51,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2024-06-27 23:44:51,625 INFO L420 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:44:51,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:44:51,625 INFO L85 PathProgramCache]: Analyzing trace with hash -1397073568, now seen corresponding path program 4 times [2024-06-27 23:44:51,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:44:51,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493549682] [2024-06-27 23:44:51,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:44:51,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:44:51,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:44:53,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:44:53,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:44:53,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493549682] [2024-06-27 23:44:53,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493549682] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:44:53,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:44:53,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:44:53,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105935551] [2024-06-27 23:44:53,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:44:53,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:44:53,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:44:53,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:44:53,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:44:53,462 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:44:53,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 444 places, 390 transitions, 4607 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:44:53,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:44:53,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:44:53,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:44:54,124 INFO L124 PetriNetUnfolderBase]: 863/1543 cut-off events. [2024-06-27 23:44:54,124 INFO L125 PetriNetUnfolderBase]: For 236950/236950 co-relation queries the response was YES. [2024-06-27 23:44:54,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12152 conditions, 1543 events. 863/1543 cut-off events. For 236950/236950 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 8806 event pairs, 175 based on Foata normal form. 2/1543 useless extension candidates. Maximal degree in co-relation 11957. Up to 1474 conditions per place. [2024-06-27 23:44:54,143 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 373 selfloop transitions, 29 changer transitions 0/404 dead transitions. [2024-06-27 23:44:54,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 404 transitions, 5461 flow [2024-06-27 23:44:54,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:44:54,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:44:54,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 130 transitions. [2024-06-27 23:44:54,144 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34946236559139787 [2024-06-27 23:44:54,144 INFO L175 Difference]: Start difference. First operand has 444 places, 390 transitions, 4607 flow. Second operand 12 states and 130 transitions. [2024-06-27 23:44:54,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 404 transitions, 5461 flow [2024-06-27 23:44:55,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 444 places, 404 transitions, 5375 flow, removed 16 selfloop flow, removed 11 redundant places. [2024-06-27 23:44:55,313 INFO L231 Difference]: Finished difference. Result has 445 places, 390 transitions, 4584 flow [2024-06-27 23:44:55,313 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4521, PETRI_DIFFERENCE_MINUEND_PLACES=433, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=390, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4584, PETRI_PLACES=445, PETRI_TRANSITIONS=390} [2024-06-27 23:44:55,314 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 415 predicate places. [2024-06-27 23:44:55,314 INFO L495 AbstractCegarLoop]: Abstraction has has 445 places, 390 transitions, 4584 flow [2024-06-27 23:44:55,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:44:55,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:44:55,314 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:44:55,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2024-06-27 23:44:55,314 INFO L420 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:44:55,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:44:55,315 INFO L85 PathProgramCache]: Analyzing trace with hash -2100711300, now seen corresponding path program 11 times [2024-06-27 23:44:55,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:44:55,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276462748] [2024-06-27 23:44:55,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:44:55,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:44:55,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:44:56,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:44:56,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:44:56,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276462748] [2024-06-27 23:44:56,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276462748] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:44:56,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:44:56,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:44:56,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854021194] [2024-06-27 23:44:56,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:44:56,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:44:56,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:44:56,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:44:56,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:44:57,053 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:44:57,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 390 transitions, 4584 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:44:57,054 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:44:57,054 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:44:57,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:44:57,602 INFO L124 PetriNetUnfolderBase]: 874/1564 cut-off events. [2024-06-27 23:44:57,602 INFO L125 PetriNetUnfolderBase]: For 259403/259403 co-relation queries the response was YES. [2024-06-27 23:44:57,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12598 conditions, 1564 events. 874/1564 cut-off events. For 259403/259403 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 8966 event pairs, 180 based on Foata normal form. 2/1564 useless extension candidates. Maximal degree in co-relation 12402. Up to 1391 conditions per place. [2024-06-27 23:44:57,624 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 339 selfloop transitions, 65 changer transitions 0/406 dead transitions. [2024-06-27 23:44:57,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 456 places, 406 transitions, 5762 flow [2024-06-27 23:44:57,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:44:57,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:44:57,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2024-06-27 23:44:57,626 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3736559139784946 [2024-06-27 23:44:57,626 INFO L175 Difference]: Start difference. First operand has 445 places, 390 transitions, 4584 flow. Second operand 12 states and 139 transitions. [2024-06-27 23:44:57,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 456 places, 406 transitions, 5762 flow [2024-06-27 23:44:58,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 446 places, 406 transitions, 5691 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-06-27 23:44:58,818 INFO L231 Difference]: Finished difference. Result has 447 places, 392 transitions, 4713 flow [2024-06-27 23:44:58,819 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4513, PETRI_DIFFERENCE_MINUEND_PLACES=435, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=390, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4713, PETRI_PLACES=447, PETRI_TRANSITIONS=392} [2024-06-27 23:44:58,819 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 417 predicate places. [2024-06-27 23:44:58,819 INFO L495 AbstractCegarLoop]: Abstraction has has 447 places, 392 transitions, 4713 flow [2024-06-27 23:44:58,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:44:58,819 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:44:58,819 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:44:58,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2024-06-27 23:44:58,820 INFO L420 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:44:58,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:44:58,820 INFO L85 PathProgramCache]: Analyzing trace with hash -2100706650, now seen corresponding path program 12 times [2024-06-27 23:44:58,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:44:58,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416957168] [2024-06-27 23:44:58,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:44:58,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:44:58,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:45:00,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:45:00,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:45:00,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416957168] [2024-06-27 23:45:00,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416957168] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:45:00,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:45:00,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:45:00,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846900941] [2024-06-27 23:45:00,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:45:00,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:45:00,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:45:00,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:45:00,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:45:00,287 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:45:00,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 447 places, 392 transitions, 4713 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:45:00,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:45:00,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:45:00,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:45:00,799 INFO L124 PetriNetUnfolderBase]: 878/1572 cut-off events. [2024-06-27 23:45:00,799 INFO L125 PetriNetUnfolderBase]: For 264062/264062 co-relation queries the response was YES. [2024-06-27 23:45:00,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12763 conditions, 1572 events. 878/1572 cut-off events. For 264062/264062 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 9030 event pairs, 179 based on Foata normal form. 2/1572 useless extension candidates. Maximal degree in co-relation 12566. Up to 1437 conditions per place. [2024-06-27 23:45:00,820 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 344 selfloop transitions, 59 changer transitions 0/405 dead transitions. [2024-06-27 23:45:00,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 457 places, 405 transitions, 5581 flow [2024-06-27 23:45:00,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:45:00,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:45:00,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-27 23:45:00,821 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375366568914956 [2024-06-27 23:45:00,821 INFO L175 Difference]: Start difference. First operand has 447 places, 392 transitions, 4713 flow. Second operand 11 states and 128 transitions. [2024-06-27 23:45:00,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 457 places, 405 transitions, 5581 flow [2024-06-27 23:45:02,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 449 places, 405 transitions, 5444 flow, removed 29 selfloop flow, removed 8 redundant places. [2024-06-27 23:45:02,097 INFO L231 Difference]: Finished difference. Result has 450 places, 393 transitions, 4734 flow [2024-06-27 23:45:02,098 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4590, PETRI_DIFFERENCE_MINUEND_PLACES=439, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=392, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4734, PETRI_PLACES=450, PETRI_TRANSITIONS=393} [2024-06-27 23:45:02,098 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 420 predicate places. [2024-06-27 23:45:02,098 INFO L495 AbstractCegarLoop]: Abstraction has has 450 places, 393 transitions, 4734 flow [2024-06-27 23:45:02,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:45:02,098 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:45:02,098 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:45:02,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2024-06-27 23:45:02,099 INFO L420 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:45:02,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:45:02,099 INFO L85 PathProgramCache]: Analyzing trace with hash 2072409770, now seen corresponding path program 5 times [2024-06-27 23:45:02,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:45:02,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055101751] [2024-06-27 23:45:02,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:45:02,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:45:02,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:45:04,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:45:04,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:45:04,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055101751] [2024-06-27 23:45:04,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055101751] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:45:04,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:45:04,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:45:04,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965511982] [2024-06-27 23:45:04,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:45:04,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:45:04,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:45:04,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:45:04,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:45:04,368 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:45:04,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 450 places, 393 transitions, 4734 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:45:04,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:45:04,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:45:04,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:45:05,056 INFO L124 PetriNetUnfolderBase]: 884/1582 cut-off events. [2024-06-27 23:45:05,057 INFO L125 PetriNetUnfolderBase]: For 267112/267112 co-relation queries the response was YES. [2024-06-27 23:45:05,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12861 conditions, 1582 events. 884/1582 cut-off events. For 267112/267112 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 9074 event pairs, 183 based on Foata normal form. 2/1582 useless extension candidates. Maximal degree in co-relation 12662. Up to 1323 conditions per place. [2024-06-27 23:45:05,078 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 322 selfloop transitions, 86 changer transitions 0/410 dead transitions. [2024-06-27 23:45:05,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 461 places, 410 transitions, 5929 flow [2024-06-27 23:45:05,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:45:05,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:45:05,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 142 transitions. [2024-06-27 23:45:05,079 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3817204301075269 [2024-06-27 23:45:05,079 INFO L175 Difference]: Start difference. First operand has 450 places, 393 transitions, 4734 flow. Second operand 12 states and 142 transitions. [2024-06-27 23:45:05,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 461 places, 410 transitions, 5929 flow [2024-06-27 23:45:06,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 410 transitions, 5797 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-27 23:45:06,325 INFO L231 Difference]: Finished difference. Result has 453 places, 395 transitions, 4832 flow [2024-06-27 23:45:06,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4602, PETRI_DIFFERENCE_MINUEND_PLACES=441, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=393, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4832, PETRI_PLACES=453, PETRI_TRANSITIONS=395} [2024-06-27 23:45:06,325 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 423 predicate places. [2024-06-27 23:45:06,325 INFO L495 AbstractCegarLoop]: Abstraction has has 453 places, 395 transitions, 4832 flow [2024-06-27 23:45:06,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:45:06,325 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:45:06,326 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:45:06,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2024-06-27 23:45:06,326 INFO L420 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:45:06,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:45:06,326 INFO L85 PathProgramCache]: Analyzing trace with hash 2066147150, now seen corresponding path program 6 times [2024-06-27 23:45:06,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:45:06,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116052264] [2024-06-27 23:45:06,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:45:06,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:45:06,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:45:08,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:45:08,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:45:08,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116052264] [2024-06-27 23:45:08,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116052264] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:45:08,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:45:08,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:45:08,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918558057] [2024-06-27 23:45:08,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:45:08,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:45:08,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:45:08,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:45:08,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:45:08,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:45:08,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 453 places, 395 transitions, 4832 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:45:08,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:45:08,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:45:08,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:45:08,970 INFO L124 PetriNetUnfolderBase]: 890/1592 cut-off events. [2024-06-27 23:45:08,971 INFO L125 PetriNetUnfolderBase]: For 271166/271166 co-relation queries the response was YES. [2024-06-27 23:45:08,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13084 conditions, 1592 events. 890/1592 cut-off events. For 271166/271166 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 9140 event pairs, 181 based on Foata normal form. 2/1592 useless extension candidates. Maximal degree in co-relation 12884. Up to 1457 conditions per place. [2024-06-27 23:45:08,993 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 348 selfloop transitions, 59 changer transitions 0/409 dead transitions. [2024-06-27 23:45:08,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 464 places, 409 transitions, 5752 flow [2024-06-27 23:45:08,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:45:08,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:45:08,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 136 transitions. [2024-06-27 23:45:08,994 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3655913978494624 [2024-06-27 23:45:08,994 INFO L175 Difference]: Start difference. First operand has 453 places, 395 transitions, 4832 flow. Second operand 12 states and 136 transitions. [2024-06-27 23:45:08,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 464 places, 409 transitions, 5752 flow [2024-06-27 23:45:10,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 454 places, 409 transitions, 5546 flow, removed 19 selfloop flow, removed 10 redundant places. [2024-06-27 23:45:10,177 INFO L231 Difference]: Finished difference. Result has 455 places, 397 transitions, 4823 flow [2024-06-27 23:45:10,177 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4626, PETRI_DIFFERENCE_MINUEND_PLACES=443, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=395, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4823, PETRI_PLACES=455, PETRI_TRANSITIONS=397} [2024-06-27 23:45:10,177 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 425 predicate places. [2024-06-27 23:45:10,177 INFO L495 AbstractCegarLoop]: Abstraction has has 455 places, 397 transitions, 4823 flow [2024-06-27 23:45:10,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:45:10,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:45:10,178 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:45:10,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2024-06-27 23:45:10,178 INFO L420 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:45:10,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:45:10,178 INFO L85 PathProgramCache]: Analyzing trace with hash 2072403260, now seen corresponding path program 7 times [2024-06-27 23:45:10,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:45:10,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074263813] [2024-06-27 23:45:10,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:45:10,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:45:10,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:45:11,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:45:11,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:45:11,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074263813] [2024-06-27 23:45:11,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074263813] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:45:11,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:45:11,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:45:11,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790066237] [2024-06-27 23:45:11,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:45:11,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:45:11,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:45:11,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:45:11,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:45:12,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:45:12,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 455 places, 397 transitions, 4823 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:45:12,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:45:12,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:45:12,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:45:12,630 INFO L124 PetriNetUnfolderBase]: 896/1602 cut-off events. [2024-06-27 23:45:12,630 INFO L125 PetriNetUnfolderBase]: For 276244/276244 co-relation queries the response was YES. [2024-06-27 23:45:12,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13141 conditions, 1602 events. 896/1602 cut-off events. For 276244/276244 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 9200 event pairs, 181 based on Foata normal form. 2/1602 useless extension candidates. Maximal degree in co-relation 12940. Up to 1467 conditions per place. [2024-06-27 23:45:12,654 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 348 selfloop transitions, 61 changer transitions 0/411 dead transitions. [2024-06-27 23:45:12,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 466 places, 411 transitions, 5751 flow [2024-06-27 23:45:12,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:45:12,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:45:12,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 135 transitions. [2024-06-27 23:45:12,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3629032258064516 [2024-06-27 23:45:12,656 INFO L175 Difference]: Start difference. First operand has 455 places, 397 transitions, 4823 flow. Second operand 12 states and 135 transitions. [2024-06-27 23:45:12,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 466 places, 411 transitions, 5751 flow [2024-06-27 23:45:14,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 456 places, 411 transitions, 5572 flow, removed 32 selfloop flow, removed 10 redundant places. [2024-06-27 23:45:14,008 INFO L231 Difference]: Finished difference. Result has 457 places, 399 transitions, 4849 flow [2024-06-27 23:45:14,008 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4644, PETRI_DIFFERENCE_MINUEND_PLACES=445, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4849, PETRI_PLACES=457, PETRI_TRANSITIONS=399} [2024-06-27 23:45:14,008 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 427 predicate places. [2024-06-27 23:45:14,008 INFO L495 AbstractCegarLoop]: Abstraction has has 457 places, 399 transitions, 4849 flow [2024-06-27 23:45:14,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:45:14,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:45:14,009 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:45:14,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2024-06-27 23:45:14,009 INFO L420 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:45:14,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:45:14,009 INFO L85 PathProgramCache]: Analyzing trace with hash 2066146964, now seen corresponding path program 13 times [2024-06-27 23:45:14,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:45:14,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469536090] [2024-06-27 23:45:14,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:45:14,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:45:14,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:45:15,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:45:15,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:45:15,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469536090] [2024-06-27 23:45:15,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469536090] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:45:15,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:45:15,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:45:15,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786211633] [2024-06-27 23:45:15,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:45:15,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:45:15,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:45:15,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:45:15,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:45:15,646 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:45:15,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 457 places, 399 transitions, 4849 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:45:15,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:45:15,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:45:15,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:45:16,236 INFO L124 PetriNetUnfolderBase]: 900/1610 cut-off events. [2024-06-27 23:45:16,237 INFO L125 PetriNetUnfolderBase]: For 279238/279238 co-relation queries the response was YES. [2024-06-27 23:45:16,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13148 conditions, 1610 events. 900/1610 cut-off events. For 279238/279238 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 9263 event pairs, 182 based on Foata normal form. 2/1610 useless extension candidates. Maximal degree in co-relation 12946. Up to 1484 conditions per place. [2024-06-27 23:45:16,260 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 356 selfloop transitions, 54 changer transitions 0/412 dead transitions. [2024-06-27 23:45:16,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 468 places, 412 transitions, 5719 flow [2024-06-27 23:45:16,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:45:16,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:45:16,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 133 transitions. [2024-06-27 23:45:16,261 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3575268817204301 [2024-06-27 23:45:16,261 INFO L175 Difference]: Start difference. First operand has 457 places, 399 transitions, 4849 flow. Second operand 12 states and 133 transitions. [2024-06-27 23:45:16,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 468 places, 412 transitions, 5719 flow [2024-06-27 23:45:17,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 458 places, 412 transitions, 5532 flow, removed 34 selfloop flow, removed 10 redundant places. [2024-06-27 23:45:17,669 INFO L231 Difference]: Finished difference. Result has 459 places, 400 transitions, 4798 flow [2024-06-27 23:45:17,670 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4662, PETRI_DIFFERENCE_MINUEND_PLACES=447, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=345, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4798, PETRI_PLACES=459, PETRI_TRANSITIONS=400} [2024-06-27 23:45:17,670 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 429 predicate places. [2024-06-27 23:45:17,670 INFO L495 AbstractCegarLoop]: Abstraction has has 459 places, 400 transitions, 4798 flow [2024-06-27 23:45:17,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:45:17,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:45:17,670 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:45:17,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2024-06-27 23:45:17,671 INFO L420 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:45:17,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:45:17,671 INFO L85 PathProgramCache]: Analyzing trace with hash 2072403074, now seen corresponding path program 14 times [2024-06-27 23:45:17,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:45:17,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060681826] [2024-06-27 23:45:17,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:45:17,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:45:17,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:45:19,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:45:19,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:45:19,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060681826] [2024-06-27 23:45:19,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060681826] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:45:19,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:45:19,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:45:19,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047492627] [2024-06-27 23:45:19,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:45:19,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:45:19,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:45:19,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:45:19,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:45:19,307 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:45:19,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 459 places, 400 transitions, 4798 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:45:19,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:45:19,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:45:19,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:45:19,862 INFO L124 PetriNetUnfolderBase]: 897/1605 cut-off events. [2024-06-27 23:45:19,862 INFO L125 PetriNetUnfolderBase]: For 261438/261438 co-relation queries the response was YES. [2024-06-27 23:45:19,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12740 conditions, 1605 events. 897/1605 cut-off events. For 261438/261438 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 9254 event pairs, 181 based on Foata normal form. 2/1605 useless extension candidates. Maximal degree in co-relation 12537. Up to 1479 conditions per place. [2024-06-27 23:45:19,884 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 354 selfloop transitions, 56 changer transitions 0/412 dead transitions. [2024-06-27 23:45:19,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 470 places, 412 transitions, 5646 flow [2024-06-27 23:45:19,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:45:19,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:45:19,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2024-06-27 23:45:19,885 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-27 23:45:19,885 INFO L175 Difference]: Start difference. First operand has 459 places, 400 transitions, 4798 flow. Second operand 12 states and 132 transitions. [2024-06-27 23:45:19,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 470 places, 412 transitions, 5646 flow [2024-06-27 23:45:21,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 460 places, 412 transitions, 5506 flow, removed 17 selfloop flow, removed 10 redundant places. [2024-06-27 23:45:21,168 INFO L231 Difference]: Finished difference. Result has 461 places, 400 transitions, 4774 flow [2024-06-27 23:45:21,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4658, PETRI_DIFFERENCE_MINUEND_PLACES=449, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=400, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4774, PETRI_PLACES=461, PETRI_TRANSITIONS=400} [2024-06-27 23:45:21,168 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 431 predicate places. [2024-06-27 23:45:21,168 INFO L495 AbstractCegarLoop]: Abstraction has has 461 places, 400 transitions, 4774 flow [2024-06-27 23:45:21,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:45:21,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:45:21,169 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:45:21,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2024-06-27 23:45:21,169 INFO L420 AbstractCegarLoop]: === Iteration 184 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:45:21,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:45:21,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1895266904, now seen corresponding path program 15 times [2024-06-27 23:45:21,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:45:21,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82866497] [2024-06-27 23:45:21,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:45:21,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:45:21,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:45:22,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:45:22,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:45:22,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82866497] [2024-06-27 23:45:22,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82866497] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:45:22,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:45:22,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:45:22,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868358428] [2024-06-27 23:45:22,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:45:22,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:45:22,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:45:22,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:45:22,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:45:23,128 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:45:23,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 461 places, 400 transitions, 4774 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:45:23,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:45:23,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:45:23,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:45:23,748 INFO L124 PetriNetUnfolderBase]: 908/1626 cut-off events. [2024-06-27 23:45:23,749 INFO L125 PetriNetUnfolderBase]: For 286230/286230 co-relation queries the response was YES. [2024-06-27 23:45:23,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13196 conditions, 1626 events. 908/1626 cut-off events. For 286230/286230 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 9397 event pairs, 181 based on Foata normal form. 2/1626 useless extension candidates. Maximal degree in co-relation 12992. Up to 1447 conditions per place. [2024-06-27 23:45:23,772 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 342 selfloop transitions, 72 changer transitions 0/416 dead transitions. [2024-06-27 23:45:23,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 471 places, 416 transitions, 5990 flow [2024-06-27 23:45:23,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:45:23,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:45:23,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-27 23:45:23,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39589442815249265 [2024-06-27 23:45:23,773 INFO L175 Difference]: Start difference. First operand has 461 places, 400 transitions, 4774 flow. Second operand 11 states and 135 transitions. [2024-06-27 23:45:23,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 471 places, 416 transitions, 5990 flow [2024-06-27 23:45:25,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 460 places, 416 transitions, 5868 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-27 23:45:25,213 INFO L231 Difference]: Finished difference. Result has 461 places, 402 transitions, 4870 flow [2024-06-27 23:45:25,214 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4652, PETRI_DIFFERENCE_MINUEND_PLACES=450, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=400, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4870, PETRI_PLACES=461, PETRI_TRANSITIONS=402} [2024-06-27 23:45:25,214 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 431 predicate places. [2024-06-27 23:45:25,214 INFO L495 AbstractCegarLoop]: Abstraction has has 461 places, 402 transitions, 4870 flow [2024-06-27 23:45:25,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:45:25,214 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:45:25,214 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:45:25,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2024-06-27 23:45:25,215 INFO L420 AbstractCegarLoop]: === Iteration 185 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:45:25,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:45:25,215 INFO L85 PathProgramCache]: Analyzing trace with hash 2065974170, now seen corresponding path program 8 times [2024-06-27 23:45:25,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:45:25,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618679134] [2024-06-27 23:45:25,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:45:25,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:45:25,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:45:26,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:45:26,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:45:26,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618679134] [2024-06-27 23:45:26,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618679134] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:45:26,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:45:26,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:45:26,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462006493] [2024-06-27 23:45:26,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:45:26,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:45:26,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:45:26,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:45:26,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:45:26,994 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:45:26,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 461 places, 402 transitions, 4870 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:45:26,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:45:26,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:45:26,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:45:27,685 INFO L124 PetriNetUnfolderBase]: 914/1636 cut-off events. [2024-06-27 23:45:27,685 INFO L125 PetriNetUnfolderBase]: For 291520/291520 co-relation queries the response was YES. [2024-06-27 23:45:27,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13406 conditions, 1636 events. 914/1636 cut-off events. For 291520/291520 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 9471 event pairs, 184 based on Foata normal form. 2/1636 useless extension candidates. Maximal degree in co-relation 13201. Up to 1471 conditions per place. [2024-06-27 23:45:27,706 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 345 selfloop transitions, 70 changer transitions 0/417 dead transitions. [2024-06-27 23:45:27,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 472 places, 417 transitions, 5824 flow [2024-06-27 23:45:27,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:45:27,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:45:27,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 141 transitions. [2024-06-27 23:45:27,707 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3790322580645161 [2024-06-27 23:45:27,707 INFO L175 Difference]: Start difference. First operand has 461 places, 402 transitions, 4870 flow. Second operand 12 states and 141 transitions. [2024-06-27 23:45:27,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 472 places, 417 transitions, 5824 flow [2024-06-27 23:45:29,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 465 places, 417 transitions, 5688 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-06-27 23:45:29,081 INFO L231 Difference]: Finished difference. Result has 466 places, 404 transitions, 4961 flow [2024-06-27 23:45:29,081 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4734, PETRI_DIFFERENCE_MINUEND_PLACES=454, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4961, PETRI_PLACES=466, PETRI_TRANSITIONS=404} [2024-06-27 23:45:29,082 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 436 predicate places. [2024-06-27 23:45:29,082 INFO L495 AbstractCegarLoop]: Abstraction has has 466 places, 404 transitions, 4961 flow [2024-06-27 23:45:29,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:45:29,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:45:29,082 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:45:29,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2024-06-27 23:45:29,082 INFO L420 AbstractCegarLoop]: === Iteration 186 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:45:29,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:45:29,083 INFO L85 PathProgramCache]: Analyzing trace with hash 2072640658, now seen corresponding path program 1 times [2024-06-27 23:45:29,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:45:29,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985091710] [2024-06-27 23:45:29,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:45:29,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:45:29,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:45:30,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:45:30,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:45:30,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985091710] [2024-06-27 23:45:30,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985091710] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:45:30,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:45:30,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:45:30,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708193694] [2024-06-27 23:45:30,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:45:30,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:45:30,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:45:30,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:45:30,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:45:31,085 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:45:31,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 466 places, 404 transitions, 4961 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:45:31,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:45:31,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:45:31,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:45:31,775 INFO L124 PetriNetUnfolderBase]: 912/1633 cut-off events. [2024-06-27 23:45:31,776 INFO L125 PetriNetUnfolderBase]: For 273173/273173 co-relation queries the response was YES. [2024-06-27 23:45:31,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13286 conditions, 1633 events. 912/1633 cut-off events. For 273173/273173 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 9477 event pairs, 185 based on Foata normal form. 1/1632 useless extension candidates. Maximal degree in co-relation 13079. Up to 1383 conditions per place. [2024-06-27 23:45:31,801 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 326 selfloop transitions, 87 changer transitions 0/415 dead transitions. [2024-06-27 23:45:31,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 476 places, 415 transitions, 5821 flow [2024-06-27 23:45:31,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:45:31,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:45:31,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-27 23:45:31,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3782991202346041 [2024-06-27 23:45:31,802 INFO L175 Difference]: Start difference. First operand has 466 places, 404 transitions, 4961 flow. Second operand 11 states and 129 transitions. [2024-06-27 23:45:31,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 476 places, 415 transitions, 5821 flow [2024-06-27 23:45:33,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 467 places, 415 transitions, 5628 flow, removed 45 selfloop flow, removed 9 redundant places. [2024-06-27 23:45:33,115 INFO L231 Difference]: Finished difference. Result has 468 places, 404 transitions, 4949 flow [2024-06-27 23:45:33,115 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4768, PETRI_DIFFERENCE_MINUEND_PLACES=457, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=404, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4949, PETRI_PLACES=468, PETRI_TRANSITIONS=404} [2024-06-27 23:45:33,116 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 438 predicate places. [2024-06-27 23:45:33,116 INFO L495 AbstractCegarLoop]: Abstraction has has 468 places, 404 transitions, 4949 flow [2024-06-27 23:45:33,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:45:33,116 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:45:33,116 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:45:33,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2024-06-27 23:45:33,116 INFO L420 AbstractCegarLoop]: === Iteration 187 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:45:33,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:45:33,117 INFO L85 PathProgramCache]: Analyzing trace with hash 2023558402, now seen corresponding path program 9 times [2024-06-27 23:45:33,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:45:33,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535747451] [2024-06-27 23:45:33,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:45:33,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:45:33,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:45:34,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:45:34,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:45:34,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535747451] [2024-06-27 23:45:34,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535747451] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:45:34,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:45:34,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:45:34,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030740149] [2024-06-27 23:45:34,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:45:34,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:45:34,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:45:34,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:45:34,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:45:34,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:45:34,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 468 places, 404 transitions, 4949 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:45:34,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:45:34,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:45:34,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:45:35,565 INFO L124 PetriNetUnfolderBase]: 928/1659 cut-off events. [2024-06-27 23:45:35,566 INFO L125 PetriNetUnfolderBase]: For 310458/310458 co-relation queries the response was YES. [2024-06-27 23:45:35,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13926 conditions, 1659 events. 928/1659 cut-off events. For 310458/310458 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 9659 event pairs, 189 based on Foata normal form. 2/1659 useless extension candidates. Maximal degree in co-relation 13718. Up to 1459 conditions per place. [2024-06-27 23:45:35,593 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 341 selfloop transitions, 79 changer transitions 0/422 dead transitions. [2024-06-27 23:45:35,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 479 places, 422 transitions, 6295 flow [2024-06-27 23:45:35,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:45:35,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:45:35,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 144 transitions. [2024-06-27 23:45:35,594 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-27 23:45:35,594 INFO L175 Difference]: Start difference. First operand has 468 places, 404 transitions, 4949 flow. Second operand 12 states and 144 transitions. [2024-06-27 23:45:35,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 479 places, 422 transitions, 6295 flow [2024-06-27 23:45:37,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 467 places, 422 transitions, 6094 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-27 23:45:37,152 INFO L231 Difference]: Finished difference. Result has 468 places, 408 transitions, 5081 flow [2024-06-27 23:45:37,152 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4750, PETRI_DIFFERENCE_MINUEND_PLACES=456, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=404, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5081, PETRI_PLACES=468, PETRI_TRANSITIONS=408} [2024-06-27 23:45:37,152 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 438 predicate places. [2024-06-27 23:45:37,152 INFO L495 AbstractCegarLoop]: Abstraction has has 468 places, 408 transitions, 5081 flow [2024-06-27 23:45:37,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:45:37,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:45:37,153 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:45:37,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2024-06-27 23:45:37,153 INFO L420 AbstractCegarLoop]: === Iteration 188 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:45:37,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:45:37,153 INFO L85 PathProgramCache]: Analyzing trace with hash -2094040224, now seen corresponding path program 10 times [2024-06-27 23:45:37,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:45:37,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453294181] [2024-06-27 23:45:37,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:45:37,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:45:37,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:45:39,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:45:39,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:45:39,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453294181] [2024-06-27 23:45:39,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453294181] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:45:39,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:45:39,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:45:39,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223428082] [2024-06-27 23:45:39,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:45:39,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:45:39,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:45:39,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:45:39,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:45:39,176 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:45:39,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 468 places, 408 transitions, 5081 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:45:39,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:45:39,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:45:39,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:45:39,966 INFO L124 PetriNetUnfolderBase]: 934/1669 cut-off events. [2024-06-27 23:45:39,966 INFO L125 PetriNetUnfolderBase]: For 312109/312109 co-relation queries the response was YES. [2024-06-27 23:45:39,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13992 conditions, 1669 events. 934/1669 cut-off events. For 312109/312109 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 9664 event pairs, 188 based on Foata normal form. 2/1669 useless extension candidates. Maximal degree in co-relation 13786. Up to 1411 conditions per place. [2024-06-27 23:45:39,985 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 332 selfloop transitions, 89 changer transitions 0/423 dead transitions. [2024-06-27 23:45:39,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 479 places, 423 transitions, 6021 flow [2024-06-27 23:45:39,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:45:39,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:45:39,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2024-06-27 23:45:39,986 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3736559139784946 [2024-06-27 23:45:39,986 INFO L175 Difference]: Start difference. First operand has 468 places, 408 transitions, 5081 flow. Second operand 12 states and 139 transitions. [2024-06-27 23:45:39,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 479 places, 423 transitions, 6021 flow [2024-06-27 23:45:41,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 471 places, 423 transitions, 5852 flow, removed 47 selfloop flow, removed 8 redundant places. [2024-06-27 23:45:41,379 INFO L231 Difference]: Finished difference. Result has 472 places, 410 transitions, 5152 flow [2024-06-27 23:45:41,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4912, PETRI_DIFFERENCE_MINUEND_PLACES=460, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=408, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5152, PETRI_PLACES=472, PETRI_TRANSITIONS=410} [2024-06-27 23:45:41,379 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 442 predicate places. [2024-06-27 23:45:41,379 INFO L495 AbstractCegarLoop]: Abstraction has has 472 places, 410 transitions, 5152 flow [2024-06-27 23:45:41,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:45:41,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:45:41,380 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:45:41,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2024-06-27 23:45:41,380 INFO L420 AbstractCegarLoop]: === Iteration 189 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:45:41,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:45:41,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1899913370, now seen corresponding path program 11 times [2024-06-27 23:45:41,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:45:41,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361730417] [2024-06-27 23:45:41,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:45:41,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:45:41,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:45:43,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:45:43,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:45:43,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361730417] [2024-06-27 23:45:43,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361730417] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:45:43,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:45:43,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:45:43,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081060179] [2024-06-27 23:45:43,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:45:43,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:45:43,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:45:43,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:45:43,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:45:43,466 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:45:43,466 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 472 places, 410 transitions, 5152 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:45:43,466 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:45:43,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:45:43,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:45:44,126 INFO L124 PetriNetUnfolderBase]: 940/1679 cut-off events. [2024-06-27 23:45:44,126 INFO L125 PetriNetUnfolderBase]: For 315065/315065 co-relation queries the response was YES. [2024-06-27 23:45:44,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14173 conditions, 1679 events. 940/1679 cut-off events. For 315065/315065 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 9759 event pairs, 190 based on Foata normal form. 2/1679 useless extension candidates. Maximal degree in co-relation 13965. Up to 1544 conditions per place. [2024-06-27 23:45:44,150 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 364 selfloop transitions, 58 changer transitions 0/424 dead transitions. [2024-06-27 23:45:44,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 483 places, 424 transitions, 6100 flow [2024-06-27 23:45:44,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:45:44,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:45:44,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 137 transitions. [2024-06-27 23:45:44,152 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3682795698924731 [2024-06-27 23:45:44,152 INFO L175 Difference]: Start difference. First operand has 472 places, 410 transitions, 5152 flow. Second operand 12 states and 137 transitions. [2024-06-27 23:45:44,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 483 places, 424 transitions, 6100 flow [2024-06-27 23:45:45,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 473 places, 424 transitions, 5884 flow, removed 21 selfloop flow, removed 10 redundant places. [2024-06-27 23:45:45,657 INFO L231 Difference]: Finished difference. Result has 474 places, 412 transitions, 5129 flow [2024-06-27 23:45:45,658 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4936, PETRI_DIFFERENCE_MINUEND_PLACES=462, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=410, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=352, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5129, PETRI_PLACES=474, PETRI_TRANSITIONS=412} [2024-06-27 23:45:45,658 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 444 predicate places. [2024-06-27 23:45:45,658 INFO L495 AbstractCegarLoop]: Abstraction has has 474 places, 412 transitions, 5129 flow [2024-06-27 23:45:45,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:45:45,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:45:45,658 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:45:45,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2024-06-27 23:45:45,659 INFO L420 AbstractCegarLoop]: === Iteration 190 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:45:45,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:45:45,659 INFO L85 PathProgramCache]: Analyzing trace with hash 2072649338, now seen corresponding path program 1 times [2024-06-27 23:45:45,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:45:45,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755183503] [2024-06-27 23:45:45,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:45:45,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:45:45,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:45:47,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:45:47,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:45:47,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755183503] [2024-06-27 23:45:47,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755183503] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:45:47,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:45:47,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:45:47,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276087986] [2024-06-27 23:45:47,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:45:47,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:45:47,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:45:47,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:45:47,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:45:47,607 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:45:47,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 474 places, 412 transitions, 5129 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:45:47,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:45:47,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:45:47,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:45:48,230 INFO L124 PetriNetUnfolderBase]: 944/1687 cut-off events. [2024-06-27 23:45:48,230 INFO L125 PetriNetUnfolderBase]: For 319092/319092 co-relation queries the response was YES. [2024-06-27 23:45:48,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14099 conditions, 1687 events. 944/1687 cut-off events. For 319092/319092 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 9850 event pairs, 182 based on Foata normal form. 2/1687 useless extension candidates. Maximal degree in co-relation 13890. Up to 1593 conditions per place. [2024-06-27 23:45:48,257 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 387 selfloop transitions, 37 changer transitions 0/426 dead transitions. [2024-06-27 23:45:48,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 484 places, 426 transitions, 6030 flow [2024-06-27 23:45:48,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:45:48,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:45:48,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-27 23:45:48,258 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36070381231671556 [2024-06-27 23:45:48,258 INFO L175 Difference]: Start difference. First operand has 474 places, 412 transitions, 5129 flow. Second operand 11 states and 123 transitions. [2024-06-27 23:45:48,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 484 places, 426 transitions, 6030 flow [2024-06-27 23:45:49,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 474 places, 426 transitions, 5859 flow, removed 29 selfloop flow, removed 10 redundant places. [2024-06-27 23:45:49,756 INFO L231 Difference]: Finished difference. Result has 475 places, 413 transitions, 5050 flow [2024-06-27 23:45:49,757 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4958, PETRI_DIFFERENCE_MINUEND_PLACES=464, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=412, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=375, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5050, PETRI_PLACES=475, PETRI_TRANSITIONS=413} [2024-06-27 23:45:49,757 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 445 predicate places. [2024-06-27 23:45:49,757 INFO L495 AbstractCegarLoop]: Abstraction has has 475 places, 413 transitions, 5050 flow [2024-06-27 23:45:49,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:45:49,757 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:45:49,757 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:45:49,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2024-06-27 23:45:49,758 INFO L420 AbstractCegarLoop]: === Iteration 191 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:45:49,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:45:49,758 INFO L85 PathProgramCache]: Analyzing trace with hash 2028199846, now seen corresponding path program 16 times [2024-06-27 23:45:49,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:45:49,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495279525] [2024-06-27 23:45:49,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:45:49,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:45:49,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:45:51,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:45:51,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:45:51,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495279525] [2024-06-27 23:45:51,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495279525] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:45:51,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:45:51,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:45:51,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567312524] [2024-06-27 23:45:51,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:45:51,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:45:51,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:45:51,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:45:51,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:45:51,464 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:45:51,465 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 475 places, 413 transitions, 5050 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:45:51,465 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:45:51,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:45:51,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:45:52,058 INFO L124 PetriNetUnfolderBase]: 948/1695 cut-off events. [2024-06-27 23:45:52,058 INFO L125 PetriNetUnfolderBase]: For 322391/322391 co-relation queries the response was YES. [2024-06-27 23:45:52,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14086 conditions, 1695 events. 948/1695 cut-off events. For 322391/322391 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 9878 event pairs, 191 based on Foata normal form. 2/1695 useless extension candidates. Maximal degree in co-relation 13876. Up to 1569 conditions per place. [2024-06-27 23:45:52,086 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 371 selfloop transitions, 53 changer transitions 0/426 dead transitions. [2024-06-27 23:45:52,086 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 486 places, 426 transitions, 5962 flow [2024-06-27 23:45:52,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:45:52,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:45:52,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 134 transitions. [2024-06-27 23:45:52,087 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3602150537634409 [2024-06-27 23:45:52,087 INFO L175 Difference]: Start difference. First operand has 475 places, 413 transitions, 5050 flow. Second operand 12 states and 134 transitions. [2024-06-27 23:45:52,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 486 places, 426 transitions, 5962 flow [2024-06-27 23:45:53,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 474 places, 426 transitions, 5827 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-27 23:45:53,616 INFO L231 Difference]: Finished difference. Result has 475 places, 414 transitions, 5063 flow [2024-06-27 23:45:53,616 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4915, PETRI_DIFFERENCE_MINUEND_PLACES=463, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=413, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=360, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5063, PETRI_PLACES=475, PETRI_TRANSITIONS=414} [2024-06-27 23:45:53,616 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 445 predicate places. [2024-06-27 23:45:53,616 INFO L495 AbstractCegarLoop]: Abstraction has has 475 places, 414 transitions, 5063 flow [2024-06-27 23:45:53,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:45:53,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:45:53,617 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:45:53,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2024-06-27 23:45:53,617 INFO L420 AbstractCegarLoop]: === Iteration 192 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:45:53,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:45:53,617 INFO L85 PathProgramCache]: Analyzing trace with hash 2028022216, now seen corresponding path program 17 times [2024-06-27 23:45:53,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:45:53,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611582752] [2024-06-27 23:45:53,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:45:53,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:45:53,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:45:55,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:45:55,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:45:55,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611582752] [2024-06-27 23:45:55,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611582752] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:45:55,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:45:55,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:45:55,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122128563] [2024-06-27 23:45:55,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:45:55,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:45:55,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:45:55,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:45:55,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:45:55,433 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:45:55,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 475 places, 414 transitions, 5063 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:45:55,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:45:55,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:45:55,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:45:56,011 INFO L124 PetriNetUnfolderBase]: 959/1716 cut-off events. [2024-06-27 23:45:56,011 INFO L125 PetriNetUnfolderBase]: For 350457/350457 co-relation queries the response was YES. [2024-06-27 23:45:56,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14628 conditions, 1716 events. 959/1716 cut-off events. For 350457/350457 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 10046 event pairs, 193 based on Foata normal form. 2/1716 useless extension candidates. Maximal degree in co-relation 14417. Up to 1544 conditions per place. [2024-06-27 23:45:56,038 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 365 selfloop transitions, 63 changer transitions 0/430 dead transitions. [2024-06-27 23:45:56,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 486 places, 430 transitions, 6329 flow [2024-06-27 23:45:56,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:45:56,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:45:56,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 141 transitions. [2024-06-27 23:45:56,039 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3790322580645161 [2024-06-27 23:45:56,040 INFO L175 Difference]: Start difference. First operand has 475 places, 414 transitions, 5063 flow. Second operand 12 states and 141 transitions. [2024-06-27 23:45:56,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 486 places, 430 transitions, 6329 flow [2024-06-27 23:45:57,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 476 places, 430 transitions, 6191 flow, removed 17 selfloop flow, removed 10 redundant places. [2024-06-27 23:45:57,677 INFO L231 Difference]: Finished difference. Result has 477 places, 416 transitions, 5133 flow [2024-06-27 23:45:57,677 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4925, PETRI_DIFFERENCE_MINUEND_PLACES=465, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=414, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=352, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5133, PETRI_PLACES=477, PETRI_TRANSITIONS=416} [2024-06-27 23:45:57,677 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 447 predicate places. [2024-06-27 23:45:57,677 INFO L495 AbstractCegarLoop]: Abstraction has has 477 places, 416 transitions, 5133 flow [2024-06-27 23:45:57,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:45:57,678 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:45:57,678 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:45:57,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2024-06-27 23:45:57,679 INFO L420 AbstractCegarLoop]: === Iteration 193 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:45:57,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:45:57,679 INFO L85 PathProgramCache]: Analyzing trace with hash 2023438246, now seen corresponding path program 18 times [2024-06-27 23:45:57,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:45:57,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013603010] [2024-06-27 23:45:57,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:45:57,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:45:57,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:45:59,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:45:59,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:45:59,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013603010] [2024-06-27 23:45:59,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013603010] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:45:59,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:45:59,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:45:59,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609451861] [2024-06-27 23:45:59,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:45:59,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:45:59,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:45:59,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:45:59,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:45:59,203 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:45:59,204 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 477 places, 416 transitions, 5133 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:45:59,204 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:45:59,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:45:59,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:45:59,898 INFO L124 PetriNetUnfolderBase]: 963/1724 cut-off events. [2024-06-27 23:45:59,898 INFO L125 PetriNetUnfolderBase]: For 355547/355547 co-relation queries the response was YES. [2024-06-27 23:45:59,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14721 conditions, 1724 events. 963/1724 cut-off events. For 355547/355547 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 10109 event pairs, 190 based on Foata normal form. 2/1724 useless extension candidates. Maximal degree in co-relation 14509. Up to 1471 conditions per place. [2024-06-27 23:45:59,923 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 354 selfloop transitions, 76 changer transitions 0/432 dead transitions. [2024-06-27 23:45:59,923 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 487 places, 432 transitions, 6371 flow [2024-06-27 23:45:59,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:45:59,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:45:59,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-27 23:45:59,924 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39002932551319647 [2024-06-27 23:45:59,924 INFO L175 Difference]: Start difference. First operand has 477 places, 416 transitions, 5133 flow. Second operand 11 states and 133 transitions. [2024-06-27 23:45:59,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 487 places, 432 transitions, 6371 flow [2024-06-27 23:46:01,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 479 places, 432 transitions, 6243 flow, removed 27 selfloop flow, removed 8 redundant places. [2024-06-27 23:46:01,484 INFO L231 Difference]: Finished difference. Result has 480 places, 417 transitions, 5203 flow [2024-06-27 23:46:01,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5005, PETRI_DIFFERENCE_MINUEND_PLACES=469, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=416, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5203, PETRI_PLACES=480, PETRI_TRANSITIONS=417} [2024-06-27 23:46:01,484 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 450 predicate places. [2024-06-27 23:46:01,484 INFO L495 AbstractCegarLoop]: Abstraction has has 480 places, 417 transitions, 5203 flow [2024-06-27 23:46:01,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:46:01,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:46:01,484 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:46:01,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2024-06-27 23:46:01,485 INFO L420 AbstractCegarLoop]: === Iteration 194 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:46:01,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:46:01,486 INFO L85 PathProgramCache]: Analyzing trace with hash 2023558216, now seen corresponding path program 19 times [2024-06-27 23:46:01,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:46:01,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040070008] [2024-06-27 23:46:01,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:46:01,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:46:01,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:46:03,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:46:03,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:46:03,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040070008] [2024-06-27 23:46:03,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040070008] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:46:03,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:46:03,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:46:03,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291613663] [2024-06-27 23:46:03,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:46:03,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:46:03,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:46:03,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:46:03,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:46:03,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:46:03,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 480 places, 417 transitions, 5203 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:46:03,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:46:03,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:46:03,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:46:03,823 INFO L124 PetriNetUnfolderBase]: 960/1719 cut-off events. [2024-06-27 23:46:03,823 INFO L125 PetriNetUnfolderBase]: For 335837/335837 co-relation queries the response was YES. [2024-06-27 23:46:03,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14448 conditions, 1719 events. 960/1719 cut-off events. For 335837/335837 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 10065 event pairs, 193 based on Foata normal form. 2/1719 useless extension candidates. Maximal degree in co-relation 14234. Up to 1566 conditions per place. [2024-06-27 23:46:03,847 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 360 selfloop transitions, 67 changer transitions 0/429 dead transitions. [2024-06-27 23:46:03,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 491 places, 429 transitions, 6085 flow [2024-06-27 23:46:03,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:46:03,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:46:03,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 136 transitions. [2024-06-27 23:46:03,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3655913978494624 [2024-06-27 23:46:03,848 INFO L175 Difference]: Start difference. First operand has 480 places, 417 transitions, 5203 flow. Second operand 12 states and 136 transitions. [2024-06-27 23:46:03,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 491 places, 429 transitions, 6085 flow [2024-06-27 23:46:05,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 482 places, 429 transitions, 5881 flow, removed 27 selfloop flow, removed 9 redundant places. [2024-06-27 23:46:05,311 INFO L231 Difference]: Finished difference. Result has 483 places, 417 transitions, 5137 flow [2024-06-27 23:46:05,312 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4999, PETRI_DIFFERENCE_MINUEND_PLACES=471, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5137, PETRI_PLACES=483, PETRI_TRANSITIONS=417} [2024-06-27 23:46:05,312 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 453 predicate places. [2024-06-27 23:46:05,312 INFO L495 AbstractCegarLoop]: Abstraction has has 483 places, 417 transitions, 5137 flow [2024-06-27 23:46:05,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:46:05,312 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:46:05,312 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:46:05,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2024-06-27 23:46:05,312 INFO L420 AbstractCegarLoop]: === Iteration 195 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:46:05,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:46:05,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1899740390, now seen corresponding path program 12 times [2024-06-27 23:46:05,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:46:05,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161156868] [2024-06-27 23:46:05,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:46:05,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:46:05,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:46:07,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:46:07,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:46:07,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161156868] [2024-06-27 23:46:07,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161156868] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:46:07,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:46:07,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:46:07,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532966683] [2024-06-27 23:46:07,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:46:07,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:46:07,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:46:07,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:46:07,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:46:07,152 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:46:07,152 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 483 places, 417 transitions, 5137 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:46:07,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:46:07,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:46:07,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:46:07,821 INFO L124 PetriNetUnfolderBase]: 956/1713 cut-off events. [2024-06-27 23:46:07,821 INFO L125 PetriNetUnfolderBase]: For 315592/315592 co-relation queries the response was YES. [2024-06-27 23:46:07,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13952 conditions, 1713 events. 956/1713 cut-off events. For 315592/315592 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 10044 event pairs, 194 based on Foata normal form. 2/1713 useless extension candidates. Maximal degree in co-relation 13737. Up to 1557 conditions per place. [2024-06-27 23:46:07,845 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 362 selfloop transitions, 66 changer transitions 0/430 dead transitions. [2024-06-27 23:46:07,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 494 places, 430 transitions, 6039 flow [2024-06-27 23:46:07,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:46:07,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:46:07,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 143 transitions. [2024-06-27 23:46:07,846 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3844086021505376 [2024-06-27 23:46:07,846 INFO L175 Difference]: Start difference. First operand has 483 places, 417 transitions, 5137 flow. Second operand 12 states and 143 transitions. [2024-06-27 23:46:07,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 494 places, 430 transitions, 6039 flow [2024-06-27 23:46:09,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 483 places, 430 transitions, 5877 flow, removed 13 selfloop flow, removed 11 redundant places. [2024-06-27 23:46:09,168 INFO L231 Difference]: Finished difference. Result has 484 places, 417 transitions, 5112 flow [2024-06-27 23:46:09,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4975, PETRI_DIFFERENCE_MINUEND_PLACES=472, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5112, PETRI_PLACES=484, PETRI_TRANSITIONS=417} [2024-06-27 23:46:09,168 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 454 predicate places. [2024-06-27 23:46:09,168 INFO L495 AbstractCegarLoop]: Abstraction has has 484 places, 417 transitions, 5112 flow [2024-06-27 23:46:09,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:46:09,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:46:09,169 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:46:09,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2024-06-27 23:46:09,169 INFO L420 AbstractCegarLoop]: === Iteration 196 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:46:09,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:46:09,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1899740204, now seen corresponding path program 20 times [2024-06-27 23:46:09,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:46:09,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429280950] [2024-06-27 23:46:09,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:46:09,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:46:09,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:46:10,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:46:10,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:46:10,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429280950] [2024-06-27 23:46:10,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429280950] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:46:10,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:46:10,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:46:10,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848308234] [2024-06-27 23:46:10,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:46:10,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:46:10,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:46:10,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:46:10,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:46:10,953 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:46:10,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 484 places, 417 transitions, 5112 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:46:10,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:46:10,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:46:10,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:46:11,528 INFO L124 PetriNetUnfolderBase]: 953/1708 cut-off events. [2024-06-27 23:46:11,528 INFO L125 PetriNetUnfolderBase]: For 295076/295076 co-relation queries the response was YES. [2024-06-27 23:46:11,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13595 conditions, 1708 events. 953/1708 cut-off events. For 295076/295076 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 10035 event pairs, 192 based on Foata normal form. 2/1708 useless extension candidates. Maximal degree in co-relation 13379. Up to 1567 conditions per place. [2024-06-27 23:46:11,553 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 367 selfloop transitions, 60 changer transitions 0/429 dead transitions. [2024-06-27 23:46:11,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 495 places, 429 transitions, 5994 flow [2024-06-27 23:46:11,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:46:11,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:46:11,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 138 transitions. [2024-06-27 23:46:11,554 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-27 23:46:11,554 INFO L175 Difference]: Start difference. First operand has 484 places, 417 transitions, 5112 flow. Second operand 12 states and 138 transitions. [2024-06-27 23:46:11,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 495 places, 429 transitions, 5994 flow [2024-06-27 23:46:12,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 484 places, 429 transitions, 5788 flow, removed 26 selfloop flow, removed 11 redundant places. [2024-06-27 23:46:12,819 INFO L231 Difference]: Finished difference. Result has 485 places, 417 transitions, 5030 flow [2024-06-27 23:46:12,819 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4906, PETRI_DIFFERENCE_MINUEND_PLACES=473, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=357, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5030, PETRI_PLACES=485, PETRI_TRANSITIONS=417} [2024-06-27 23:46:12,819 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 455 predicate places. [2024-06-27 23:46:12,819 INFO L495 AbstractCegarLoop]: Abstraction has has 485 places, 417 transitions, 5030 flow [2024-06-27 23:46:12,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:46:12,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:46:12,820 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:46:12,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2024-06-27 23:46:12,820 INFO L420 AbstractCegarLoop]: === Iteration 197 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:46:12,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:46:12,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1774794430, now seen corresponding path program 21 times [2024-06-27 23:46:12,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:46:12,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055882657] [2024-06-27 23:46:12,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:46:12,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:46:12,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:46:14,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:46:14,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:46:14,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055882657] [2024-06-27 23:46:14,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055882657] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:46:14,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:46:14,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:46:14,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321443135] [2024-06-27 23:46:14,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:46:14,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:46:14,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:46:14,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:46:14,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:46:14,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:46:14,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 485 places, 417 transitions, 5030 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:46:14,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:46:14,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:46:14,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:46:15,018 INFO L124 PetriNetUnfolderBase]: 964/1728 cut-off events. [2024-06-27 23:46:15,018 INFO L125 PetriNetUnfolderBase]: For 323662/323662 co-relation queries the response was YES. [2024-06-27 23:46:15,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14059 conditions, 1728 events. 964/1728 cut-off events. For 323662/323662 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 10186 event pairs, 189 based on Foata normal form. 2/1728 useless extension candidates. Maximal degree in co-relation 13842. Up to 1524 conditions per place. [2024-06-27 23:46:15,041 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 367 selfloop transitions, 64 changer transitions 0/433 dead transitions. [2024-06-27 23:46:15,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 495 places, 433 transitions, 6318 flow [2024-06-27 23:46:15,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:46:15,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:46:15,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-27 23:46:15,043 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36950146627565983 [2024-06-27 23:46:15,043 INFO L175 Difference]: Start difference. First operand has 485 places, 417 transitions, 5030 flow. Second operand 11 states and 126 transitions. [2024-06-27 23:46:15,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 495 places, 433 transitions, 6318 flow [2024-06-27 23:46:16,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 484 places, 433 transitions, 6192 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-06-27 23:46:16,503 INFO L231 Difference]: Finished difference. Result has 485 places, 419 transitions, 5122 flow [2024-06-27 23:46:16,503 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4904, PETRI_DIFFERENCE_MINUEND_PLACES=474, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5122, PETRI_PLACES=485, PETRI_TRANSITIONS=419} [2024-06-27 23:46:16,504 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 455 predicate places. [2024-06-27 23:46:16,504 INFO L495 AbstractCegarLoop]: Abstraction has has 485 places, 419 transitions, 5122 flow [2024-06-27 23:46:16,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:46:16,504 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:46:16,504 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:46:16,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2024-06-27 23:46:16,504 INFO L420 AbstractCegarLoop]: === Iteration 198 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:46:16,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:46:16,505 INFO L85 PathProgramCache]: Analyzing trace with hash -140616388, now seen corresponding path program 13 times [2024-06-27 23:46:16,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:46:16,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351010002] [2024-06-27 23:46:16,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:46:16,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:46:16,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:46:18,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:46:18,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:46:18,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351010002] [2024-06-27 23:46:18,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351010002] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:46:18,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:46:18,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:46:18,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460342044] [2024-06-27 23:46:18,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:46:18,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:46:18,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:46:18,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:46:18,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:46:18,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:46:18,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 485 places, 419 transitions, 5122 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:46:18,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:46:18,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:46:18,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:46:19,168 INFO L124 PetriNetUnfolderBase]: 980/1754 cut-off events. [2024-06-27 23:46:19,169 INFO L125 PetriNetUnfolderBase]: For 355276/355276 co-relation queries the response was YES. [2024-06-27 23:46:19,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14822 conditions, 1754 events. 980/1754 cut-off events. For 355276/355276 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 10324 event pairs, 190 based on Foata normal form. 2/1754 useless extension candidates. Maximal degree in co-relation 14604. Up to 1455 conditions per place. [2024-06-27 23:46:19,197 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 350 selfloop transitions, 86 changer transitions 0/438 dead transitions. [2024-06-27 23:46:19,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 496 places, 438 transitions, 6544 flow [2024-06-27 23:46:19,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:46:19,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:46:19,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2024-06-27 23:46:19,199 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3736559139784946 [2024-06-27 23:46:19,199 INFO L175 Difference]: Start difference. First operand has 485 places, 419 transitions, 5122 flow. Second operand 12 states and 139 transitions. [2024-06-27 23:46:19,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 496 places, 438 transitions, 6544 flow [2024-06-27 23:46:20,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 489 places, 438 transitions, 6400 flow, removed 30 selfloop flow, removed 7 redundant places. [2024-06-27 23:46:20,742 INFO L231 Difference]: Finished difference. Result has 490 places, 423 transitions, 5331 flow [2024-06-27 23:46:20,742 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4978, PETRI_DIFFERENCE_MINUEND_PLACES=478, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5331, PETRI_PLACES=490, PETRI_TRANSITIONS=423} [2024-06-27 23:46:20,742 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 460 predicate places. [2024-06-27 23:46:20,742 INFO L495 AbstractCegarLoop]: Abstraction has has 490 places, 423 transitions, 5331 flow [2024-06-27 23:46:20,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:46:20,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:46:20,743 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:46:20,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2024-06-27 23:46:20,743 INFO L420 AbstractCegarLoop]: === Iteration 199 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:46:20,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:46:20,743 INFO L85 PathProgramCache]: Analyzing trace with hash -135974944, now seen corresponding path program 22 times [2024-06-27 23:46:20,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:46:20,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435112074] [2024-06-27 23:46:20,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:46:20,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:46:20,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:46:22,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:46:22,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:46:22,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435112074] [2024-06-27 23:46:22,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435112074] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:46:22,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:46:22,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:46:22,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898762295] [2024-06-27 23:46:22,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:46:22,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:46:22,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:46:22,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:46:22,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:46:22,230 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:46:22,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 490 places, 423 transitions, 5331 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:46:22,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:46:22,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:46:22,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:46:22,842 INFO L124 PetriNetUnfolderBase]: 984/1762 cut-off events. [2024-06-27 23:46:22,842 INFO L125 PetriNetUnfolderBase]: For 359281/359281 co-relation queries the response was YES. [2024-06-27 23:46:22,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14956 conditions, 1762 events. 984/1762 cut-off events. For 359281/359281 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 10420 event pairs, 196 based on Foata normal form. 2/1762 useless extension candidates. Maximal degree in co-relation 14736. Up to 1683 conditions per place. [2024-06-27 23:46:22,869 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 393 selfloop transitions, 40 changer transitions 0/435 dead transitions. [2024-06-27 23:46:22,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 500 places, 435 transitions, 6245 flow [2024-06-27 23:46:22,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:46:22,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:46:22,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-27 23:46:22,870 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-27 23:46:22,870 INFO L175 Difference]: Start difference. First operand has 490 places, 423 transitions, 5331 flow. Second operand 11 states and 121 transitions. [2024-06-27 23:46:22,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 500 places, 435 transitions, 6245 flow [2024-06-27 23:46:24,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 492 places, 435 transitions, 6045 flow, removed 56 selfloop flow, removed 8 redundant places. [2024-06-27 23:46:24,448 INFO L231 Difference]: Finished difference. Result has 493 places, 424 transitions, 5241 flow [2024-06-27 23:46:24,449 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5131, PETRI_DIFFERENCE_MINUEND_PLACES=482, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=383, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5241, PETRI_PLACES=493, PETRI_TRANSITIONS=424} [2024-06-27 23:46:24,449 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 463 predicate places. [2024-06-27 23:46:24,449 INFO L495 AbstractCegarLoop]: Abstraction has has 493 places, 424 transitions, 5241 flow [2024-06-27 23:46:24,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:46:24,449 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:46:24,449 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:46:24,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2024-06-27 23:46:24,449 INFO L420 AbstractCegarLoop]: === Iteration 200 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:46:24,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:46:24,450 INFO L85 PathProgramCache]: Analyzing trace with hash 199711894, now seen corresponding path program 14 times [2024-06-27 23:46:24,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:46:24,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134534857] [2024-06-27 23:46:24,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:46:24,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:46:24,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:46:26,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:46:26,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:46:26,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134534857] [2024-06-27 23:46:26,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134534857] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:46:26,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:46:26,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:46:26,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594513995] [2024-06-27 23:46:26,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:46:26,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:46:26,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:46:26,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:46:26,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:46:26,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:46:26,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 493 places, 424 transitions, 5241 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:46:26,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:46:26,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:46:26,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:46:27,056 INFO L124 PetriNetUnfolderBase]: 990/1772 cut-off events. [2024-06-27 23:46:27,057 INFO L125 PetriNetUnfolderBase]: For 361511/361511 co-relation queries the response was YES. [2024-06-27 23:46:27,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14937 conditions, 1772 events. 990/1772 cut-off events. For 361511/361511 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 10473 event pairs, 196 based on Foata normal form. 2/1772 useless extension candidates. Maximal degree in co-relation 14715. Up to 1717 conditions per place. [2024-06-27 23:46:27,089 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 410 selfloop transitions, 27 changer transitions 0/439 dead transitions. [2024-06-27 23:46:27,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 504 places, 439 transitions, 6537 flow [2024-06-27 23:46:27,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:46:27,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:46:27,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 128 transitions. [2024-06-27 23:46:27,090 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34408602150537637 [2024-06-27 23:46:27,090 INFO L175 Difference]: Start difference. First operand has 493 places, 424 transitions, 5241 flow. Second operand 12 states and 128 transitions. [2024-06-27 23:46:27,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 504 places, 439 transitions, 6537 flow [2024-06-27 23:46:28,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 495 places, 439 transitions, 6439 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-27 23:46:28,722 INFO L231 Difference]: Finished difference. Result has 496 places, 426 transitions, 5266 flow [2024-06-27 23:46:28,722 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5143, PETRI_DIFFERENCE_MINUEND_PLACES=484, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=424, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=397, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5266, PETRI_PLACES=496, PETRI_TRANSITIONS=426} [2024-06-27 23:46:28,723 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 466 predicate places. [2024-06-27 23:46:28,723 INFO L495 AbstractCegarLoop]: Abstraction has has 496 places, 426 transitions, 5266 flow [2024-06-27 23:46:28,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:46:28,723 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:46:28,723 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:46:28,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2024-06-27 23:46:28,723 INFO L420 AbstractCegarLoop]: === Iteration 201 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:46:28,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:46:28,724 INFO L85 PathProgramCache]: Analyzing trace with hash -2005991258, now seen corresponding path program 23 times [2024-06-27 23:46:28,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:46:28,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49880705] [2024-06-27 23:46:28,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:46:28,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:46:28,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:46:30,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:46:30,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:46:30,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49880705] [2024-06-27 23:46:30,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49880705] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:46:30,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:46:30,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:46:30,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729661448] [2024-06-27 23:46:30,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:46:30,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:46:30,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:46:30,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:46:30,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:46:30,405 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:46:30,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 496 places, 426 transitions, 5266 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:46:30,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:46:30,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:46:30,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:46:31,105 INFO L124 PetriNetUnfolderBase]: 994/1780 cut-off events. [2024-06-27 23:46:31,105 INFO L125 PetriNetUnfolderBase]: For 365970/365970 co-relation queries the response was YES. [2024-06-27 23:46:31,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14984 conditions, 1780 events. 994/1780 cut-off events. For 365970/365970 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 10539 event pairs, 195 based on Foata normal form. 2/1780 useless extension candidates. Maximal degree in co-relation 14761. Up to 1641 conditions per place. [2024-06-27 23:46:31,133 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 368 selfloop transitions, 70 changer transitions 0/440 dead transitions. [2024-06-27 23:46:31,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 507 places, 440 transitions, 6524 flow [2024-06-27 23:46:31,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:46:31,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:46:31,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 135 transitions. [2024-06-27 23:46:31,134 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3629032258064516 [2024-06-27 23:46:31,134 INFO L175 Difference]: Start difference. First operand has 496 places, 426 transitions, 5266 flow. Second operand 12 states and 135 transitions. [2024-06-27 23:46:31,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 507 places, 440 transitions, 6524 flow [2024-06-27 23:46:32,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 494 places, 440 transitions, 6298 flow, removed 27 selfloop flow, removed 13 redundant places. [2024-06-27 23:46:32,809 INFO L231 Difference]: Finished difference. Result has 495 places, 427 transitions, 5212 flow [2024-06-27 23:46:32,810 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5040, PETRI_DIFFERENCE_MINUEND_PLACES=483, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5212, PETRI_PLACES=495, PETRI_TRANSITIONS=427} [2024-06-27 23:46:32,810 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 465 predicate places. [2024-06-27 23:46:32,810 INFO L495 AbstractCegarLoop]: Abstraction has has 495 places, 427 transitions, 5212 flow [2024-06-27 23:46:32,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:46:32,810 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:46:32,810 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:46:32,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2024-06-27 23:46:32,810 INFO L420 AbstractCegarLoop]: === Iteration 202 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:46:32,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:46:32,811 INFO L85 PathProgramCache]: Analyzing trace with hash -409122924, now seen corresponding path program 2 times [2024-06-27 23:46:32,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:46:32,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449078859] [2024-06-27 23:46:32,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:46:32,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:46:32,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:46:34,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:46:34,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:46:34,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449078859] [2024-06-27 23:46:34,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449078859] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:46:34,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:46:34,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:46:34,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489364317] [2024-06-27 23:46:34,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:46:34,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:46:34,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:46:34,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:46:34,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:46:34,673 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:46:34,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 495 places, 427 transitions, 5212 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:46:34,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:46:34,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:46:34,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:46:35,362 INFO L124 PetriNetUnfolderBase]: 998/1788 cut-off events. [2024-06-27 23:46:35,363 INFO L125 PetriNetUnfolderBase]: For 369611/369611 co-relation queries the response was YES. [2024-06-27 23:46:35,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14923 conditions, 1788 events. 998/1788 cut-off events. For 369611/369611 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 10609 event pairs, 198 based on Foata normal form. 2/1788 useless extension candidates. Maximal degree in co-relation 14701. Up to 1743 conditions per place. [2024-06-27 23:46:35,390 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 415 selfloop transitions, 22 changer transitions 0/439 dead transitions. [2024-06-27 23:46:35,390 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 505 places, 439 transitions, 6124 flow [2024-06-27 23:46:35,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:46:35,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:46:35,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-27 23:46:35,392 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34310850439882695 [2024-06-27 23:46:35,392 INFO L175 Difference]: Start difference. First operand has 495 places, 427 transitions, 5212 flow. Second operand 11 states and 117 transitions. [2024-06-27 23:46:35,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 505 places, 439 transitions, 6124 flow [2024-06-27 23:46:36,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 495 places, 439 transitions, 5964 flow, removed 11 selfloop flow, removed 10 redundant places. [2024-06-27 23:46:36,944 INFO L231 Difference]: Finished difference. Result has 496 places, 428 transitions, 5117 flow [2024-06-27 23:46:36,944 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5052, PETRI_DIFFERENCE_MINUEND_PLACES=485, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5117, PETRI_PLACES=496, PETRI_TRANSITIONS=428} [2024-06-27 23:46:36,945 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 466 predicate places. [2024-06-27 23:46:36,945 INFO L495 AbstractCegarLoop]: Abstraction has has 496 places, 428 transitions, 5117 flow [2024-06-27 23:46:36,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:46:36,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:46:36,945 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:46:36,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2024-06-27 23:46:36,945 INFO L420 AbstractCegarLoop]: === Iteration 203 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:46:36,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:46:36,946 INFO L85 PathProgramCache]: Analyzing trace with hash -1828622402, now seen corresponding path program 15 times [2024-06-27 23:46:36,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:46:36,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210831986] [2024-06-27 23:46:36,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:46:36,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:46:36,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:46:38,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:46:38,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:46:38,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210831986] [2024-06-27 23:46:38,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210831986] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:46:38,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:46:38,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:46:38,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714932130] [2024-06-27 23:46:38,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:46:38,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:46:38,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:46:38,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:46:38,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:46:38,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:46:38,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 496 places, 428 transitions, 5117 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:46:38,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:46:38,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:46:38,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:46:39,512 INFO L124 PetriNetUnfolderBase]: 1004/1798 cut-off events. [2024-06-27 23:46:39,512 INFO L125 PetriNetUnfolderBase]: For 374490/374490 co-relation queries the response was YES. [2024-06-27 23:46:39,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14945 conditions, 1798 events. 1004/1798 cut-off events. For 374490/374490 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 10695 event pairs, 196 based on Foata normal form. 2/1798 useless extension candidates. Maximal degree in co-relation 14722. Up to 1679 conditions per place. [2024-06-27 23:46:39,541 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 391 selfloop transitions, 50 changer transitions 0/443 dead transitions. [2024-06-27 23:46:39,542 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 507 places, 443 transitions, 6115 flow [2024-06-27 23:46:39,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:46:39,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:46:39,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 134 transitions. [2024-06-27 23:46:39,543 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3602150537634409 [2024-06-27 23:46:39,543 INFO L175 Difference]: Start difference. First operand has 496 places, 428 transitions, 5117 flow. Second operand 12 states and 134 transitions. [2024-06-27 23:46:39,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 507 places, 443 transitions, 6115 flow [2024-06-27 23:46:41,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 497 places, 443 transitions, 6046 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-06-27 23:46:41,211 INFO L231 Difference]: Finished difference. Result has 498 places, 430 transitions, 5221 flow [2024-06-27 23:46:41,212 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5048, PETRI_DIFFERENCE_MINUEND_PLACES=486, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=428, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=378, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5221, PETRI_PLACES=498, PETRI_TRANSITIONS=430} [2024-06-27 23:46:41,212 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 468 predicate places. [2024-06-27 23:46:41,212 INFO L495 AbstractCegarLoop]: Abstraction has has 498 places, 430 transitions, 5221 flow [2024-06-27 23:46:41,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:46:41,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:46:41,212 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:46:41,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2024-06-27 23:46:41,213 INFO L420 AbstractCegarLoop]: === Iteration 204 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:46:41,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:46:41,228 INFO L85 PathProgramCache]: Analyzing trace with hash 838137186, now seen corresponding path program 16 times [2024-06-27 23:46:41,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:46:41,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195647406] [2024-06-27 23:46:41,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:46:41,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:46:41,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:46:43,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:46:43,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:46:43,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195647406] [2024-06-27 23:46:43,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195647406] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:46:43,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:46:43,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:46:43,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293261156] [2024-06-27 23:46:43,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:46:43,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:46:43,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:46:43,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:46:43,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:46:43,293 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:46:43,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 498 places, 430 transitions, 5221 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:46:43,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:46:43,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:46:43,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:46:43,980 INFO L124 PetriNetUnfolderBase]: 1010/1808 cut-off events. [2024-06-27 23:46:43,980 INFO L125 PetriNetUnfolderBase]: For 379964/379964 co-relation queries the response was YES. [2024-06-27 23:46:44,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15157 conditions, 1808 events. 1010/1808 cut-off events. For 379964/379964 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 10754 event pairs, 198 based on Foata normal form. 2/1808 useless extension candidates. Maximal degree in co-relation 14933. Up to 1694 conditions per place. [2024-06-27 23:46:44,008 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 406 selfloop transitions, 39 changer transitions 0/447 dead transitions. [2024-06-27 23:46:44,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 509 places, 447 transitions, 6251 flow [2024-06-27 23:46:44,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:46:44,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:46:44,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 134 transitions. [2024-06-27 23:46:44,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3602150537634409 [2024-06-27 23:46:44,009 INFO L175 Difference]: Start difference. First operand has 498 places, 430 transitions, 5221 flow. Second operand 12 states and 134 transitions. [2024-06-27 23:46:44,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 509 places, 447 transitions, 6251 flow [2024-06-27 23:46:45,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 499 places, 447 transitions, 6100 flow, removed 27 selfloop flow, removed 10 redundant places. [2024-06-27 23:46:45,584 INFO L231 Difference]: Finished difference. Result has 500 places, 432 transitions, 5225 flow [2024-06-27 23:46:45,584 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5070, PETRI_DIFFERENCE_MINUEND_PLACES=488, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=430, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5225, PETRI_PLACES=500, PETRI_TRANSITIONS=432} [2024-06-27 23:46:45,584 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 470 predicate places. [2024-06-27 23:46:45,585 INFO L495 AbstractCegarLoop]: Abstraction has has 500 places, 432 transitions, 5225 flow [2024-06-27 23:46:45,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:46:45,585 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:46:45,585 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:46:45,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2024-06-27 23:46:45,585 INFO L420 AbstractCegarLoop]: === Iteration 205 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:46:45,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:46:45,585 INFO L85 PathProgramCache]: Analyzing trace with hash -140621224, now seen corresponding path program 24 times [2024-06-27 23:46:45,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:46:45,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627217511] [2024-06-27 23:46:45,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:46:45,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:46:45,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:46:47,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:46:47,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:46:47,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627217511] [2024-06-27 23:46:47,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627217511] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:46:47,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:46:47,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:46:47,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423825948] [2024-06-27 23:46:47,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:46:47,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:46:47,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:46:47,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:46:47,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:46:47,234 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:46:47,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 500 places, 432 transitions, 5225 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:46:47,234 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:46:47,234 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:46:47,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:46:47,867 INFO L124 PetriNetUnfolderBase]: 1014/1816 cut-off events. [2024-06-27 23:46:47,867 INFO L125 PetriNetUnfolderBase]: For 383970/383970 co-relation queries the response was YES. [2024-06-27 23:46:47,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15159 conditions, 1816 events. 1014/1816 cut-off events. For 383970/383970 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 10834 event pairs, 201 based on Foata normal form. 2/1816 useless extension candidates. Maximal degree in co-relation 14934. Up to 1681 conditions per place. [2024-06-27 23:46:47,896 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 379 selfloop transitions, 64 changer transitions 0/445 dead transitions. [2024-06-27 23:46:47,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 511 places, 445 transitions, 6165 flow [2024-06-27 23:46:47,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:46:47,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:46:47,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 131 transitions. [2024-06-27 23:46:47,897 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3521505376344086 [2024-06-27 23:46:47,897 INFO L175 Difference]: Start difference. First operand has 500 places, 432 transitions, 5225 flow. Second operand 12 states and 131 transitions. [2024-06-27 23:46:47,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 511 places, 445 transitions, 6165 flow [2024-06-27 23:46:49,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 501 places, 445 transitions, 6032 flow, removed 29 selfloop flow, removed 10 redundant places. [2024-06-27 23:46:49,515 INFO L231 Difference]: Finished difference. Result has 502 places, 433 transitions, 5254 flow [2024-06-27 23:46:49,515 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5092, PETRI_DIFFERENCE_MINUEND_PLACES=490, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=432, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5254, PETRI_PLACES=502, PETRI_TRANSITIONS=433} [2024-06-27 23:46:49,516 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 472 predicate places. [2024-06-27 23:46:49,516 INFO L495 AbstractCegarLoop]: Abstraction has has 502 places, 433 transitions, 5254 flow [2024-06-27 23:46:49,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:46:49,516 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:46:49,516 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:46:49,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2024-06-27 23:46:49,516 INFO L420 AbstractCegarLoop]: === Iteration 206 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:46:49,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:46:49,517 INFO L85 PathProgramCache]: Analyzing trace with hash 118220622, now seen corresponding path program 17 times [2024-06-27 23:46:49,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:46:49,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298666967] [2024-06-27 23:46:49,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:46:49,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:46:49,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:46:51,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:46:51,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:46:51,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298666967] [2024-06-27 23:46:51,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298666967] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:46:51,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:46:51,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:46:51,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533803848] [2024-06-27 23:46:51,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:46:51,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:46:51,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:46:51,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:46:51,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:46:51,179 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:46:51,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 502 places, 433 transitions, 5254 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:46:51,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:46:51,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:46:51,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:46:51,854 INFO L124 PetriNetUnfolderBase]: 1013/1815 cut-off events. [2024-06-27 23:46:51,854 INFO L125 PetriNetUnfolderBase]: For 375044/375044 co-relation queries the response was YES. [2024-06-27 23:46:51,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14835 conditions, 1815 events. 1013/1815 cut-off events. For 375044/375044 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 10819 event pairs, 201 based on Foata normal form. 3/1816 useless extension candidates. Maximal degree in co-relation 14609. Up to 1766 conditions per place. [2024-06-27 23:46:51,884 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 417 selfloop transitions, 28 changer transitions 0/447 dead transitions. [2024-06-27 23:46:51,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 513 places, 447 transitions, 6250 flow [2024-06-27 23:46:51,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:46:51,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:46:51,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 127 transitions. [2024-06-27 23:46:51,887 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34139784946236557 [2024-06-27 23:46:51,887 INFO L175 Difference]: Start difference. First operand has 502 places, 433 transitions, 5254 flow. Second operand 12 states and 127 transitions. [2024-06-27 23:46:51,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 513 places, 447 transitions, 6250 flow [2024-06-27 23:46:53,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 503 places, 447 transitions, 6070 flow, removed 27 selfloop flow, removed 10 redundant places. [2024-06-27 23:46:53,497 INFO L231 Difference]: Finished difference. Result has 504 places, 435 transitions, 5214 flow [2024-06-27 23:46:53,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5074, PETRI_DIFFERENCE_MINUEND_PLACES=492, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=433, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5214, PETRI_PLACES=504, PETRI_TRANSITIONS=435} [2024-06-27 23:46:53,512 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 474 predicate places. [2024-06-27 23:46:53,512 INFO L495 AbstractCegarLoop]: Abstraction has has 504 places, 435 transitions, 5214 flow [2024-06-27 23:46:53,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:46:53,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:46:53,513 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:46:53,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2024-06-27 23:46:53,513 INFO L420 AbstractCegarLoop]: === Iteration 207 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:46:53,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:46:53,513 INFO L85 PathProgramCache]: Analyzing trace with hash -2001349442, now seen corresponding path program 18 times [2024-06-27 23:46:53,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:46:53,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653703221] [2024-06-27 23:46:53,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:46:53,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:46:53,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:46:54,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:46:54,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:46:54,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653703221] [2024-06-27 23:46:54,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653703221] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:46:54,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:46:54,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:46:54,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823193911] [2024-06-27 23:46:54,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:46:54,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:46:54,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:46:54,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:46:54,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:46:55,094 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:46:55,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 504 places, 435 transitions, 5214 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:46:55,094 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:46:55,094 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:46:55,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:46:55,790 INFO L124 PetriNetUnfolderBase]: 1019/1825 cut-off events. [2024-06-27 23:46:55,790 INFO L125 PetriNetUnfolderBase]: For 366127/366127 co-relation queries the response was YES. [2024-06-27 23:46:55,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14851 conditions, 1825 events. 1019/1825 cut-off events. For 366127/366127 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 10930 event pairs, 203 based on Foata normal form. 2/1825 useless extension candidates. Maximal degree in co-relation 14624. Up to 1728 conditions per place. [2024-06-27 23:46:55,818 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 395 selfloop transitions, 53 changer transitions 0/450 dead transitions. [2024-06-27 23:46:55,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 515 places, 450 transitions, 6268 flow [2024-06-27 23:46:55,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:46:55,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:46:55,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 137 transitions. [2024-06-27 23:46:55,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3682795698924731 [2024-06-27 23:46:55,819 INFO L175 Difference]: Start difference. First operand has 504 places, 435 transitions, 5214 flow. Second operand 12 states and 137 transitions. [2024-06-27 23:46:55,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 515 places, 450 transitions, 6268 flow [2024-06-27 23:46:57,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 506 places, 450 transitions, 6115 flow, removed 32 selfloop flow, removed 9 redundant places. [2024-06-27 23:46:57,404 INFO L231 Difference]: Finished difference. Result has 508 places, 439 transitions, 5317 flow [2024-06-27 23:46:57,404 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5061, PETRI_DIFFERENCE_MINUEND_PLACES=495, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=435, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=383, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5317, PETRI_PLACES=508, PETRI_TRANSITIONS=439} [2024-06-27 23:46:57,404 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 478 predicate places. [2024-06-27 23:46:57,404 INFO L495 AbstractCegarLoop]: Abstraction has has 508 places, 439 transitions, 5317 flow [2024-06-27 23:46:57,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:46:57,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:46:57,405 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:46:57,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2024-06-27 23:46:57,405 INFO L420 AbstractCegarLoop]: === Iteration 208 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:46:57,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:46:57,406 INFO L85 PathProgramCache]: Analyzing trace with hash -417175422, now seen corresponding path program 19 times [2024-06-27 23:46:57,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:46:57,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201370156] [2024-06-27 23:46:57,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:46:57,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:46:57,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:46:59,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:46:59,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:46:59,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201370156] [2024-06-27 23:46:59,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201370156] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:46:59,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:46:59,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:46:59,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990376921] [2024-06-27 23:46:59,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:46:59,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:46:59,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:46:59,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:46:59,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:46:59,180 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:46:59,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 508 places, 439 transitions, 5317 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:46:59,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:46:59,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:46:59,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:46:59,886 INFO L124 PetriNetUnfolderBase]: 1025/1835 cut-off events. [2024-06-27 23:46:59,886 INFO L125 PetriNetUnfolderBase]: For 375230/375230 co-relation queries the response was YES. [2024-06-27 23:46:59,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15107 conditions, 1835 events. 1025/1835 cut-off events. For 375230/375230 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 10970 event pairs, 199 based on Foata normal form. 2/1835 useless extension candidates. Maximal degree in co-relation 14878. Up to 1770 conditions per place. [2024-06-27 23:46:59,911 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 425 selfloop transitions, 27 changer transitions 0/454 dead transitions. [2024-06-27 23:46:59,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 519 places, 454 transitions, 6359 flow [2024-06-27 23:46:59,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:46:59,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:46:59,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 128 transitions. [2024-06-27 23:46:59,912 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34408602150537637 [2024-06-27 23:46:59,913 INFO L175 Difference]: Start difference. First operand has 508 places, 439 transitions, 5317 flow. Second operand 12 states and 128 transitions. [2024-06-27 23:46:59,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 519 places, 454 transitions, 6359 flow [2024-06-27 23:47:01,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 510 places, 454 transitions, 6155 flow, removed 64 selfloop flow, removed 9 redundant places. [2024-06-27 23:47:01,754 INFO L231 Difference]: Finished difference. Result has 511 places, 441 transitions, 5262 flow [2024-06-27 23:47:01,755 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5119, PETRI_DIFFERENCE_MINUEND_PLACES=499, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=439, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=412, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5262, PETRI_PLACES=511, PETRI_TRANSITIONS=441} [2024-06-27 23:47:01,755 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 481 predicate places. [2024-06-27 23:47:01,755 INFO L495 AbstractCegarLoop]: Abstraction has has 511 places, 441 transitions, 5262 flow [2024-06-27 23:47:01,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:47:01,755 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:47:01,755 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:47:01,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2024-06-27 23:47:01,755 INFO L420 AbstractCegarLoop]: === Iteration 209 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:47:01,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:47:01,756 INFO L85 PathProgramCache]: Analyzing trace with hash 868703700, now seen corresponding path program 3 times [2024-06-27 23:47:01,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:47:01,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855804479] [2024-06-27 23:47:01,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:47:01,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:47:01,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:47:03,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:47:03,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:47:03,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855804479] [2024-06-27 23:47:03,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855804479] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:47:03,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:47:03,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:47:03,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246714647] [2024-06-27 23:47:03,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:47:03,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:47:03,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:47:03,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:47:03,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:47:03,675 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:47:03,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 511 places, 441 transitions, 5262 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:47:03,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:47:03,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:47:03,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:47:04,376 INFO L124 PetriNetUnfolderBase]: 1029/1843 cut-off events. [2024-06-27 23:47:04,376 INFO L125 PetriNetUnfolderBase]: For 378483/378483 co-relation queries the response was YES. [2024-06-27 23:47:04,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14984 conditions, 1843 events. 1029/1843 cut-off events. For 378483/378483 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 11029 event pairs, 193 based on Foata normal form. 2/1843 useless extension candidates. Maximal degree in co-relation 14754. Up to 1770 conditions per place. [2024-06-27 23:47:04,405 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 422 selfloop transitions, 30 changer transitions 0/454 dead transitions. [2024-06-27 23:47:04,405 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 521 places, 454 transitions, 6224 flow [2024-06-27 23:47:04,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:47:04,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:47:04,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-27 23:47:04,406 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3519061583577713 [2024-06-27 23:47:04,406 INFO L175 Difference]: Start difference. First operand has 511 places, 441 transitions, 5262 flow. Second operand 11 states and 120 transitions. [2024-06-27 23:47:04,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 521 places, 454 transitions, 6224 flow [2024-06-27 23:47:06,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 511 places, 454 transitions, 6103 flow, removed 35 selfloop flow, removed 10 redundant places. [2024-06-27 23:47:06,171 INFO L231 Difference]: Finished difference. Result has 512 places, 442 transitions, 5223 flow [2024-06-27 23:47:06,171 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5141, PETRI_DIFFERENCE_MINUEND_PLACES=501, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=441, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=411, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5223, PETRI_PLACES=512, PETRI_TRANSITIONS=442} [2024-06-27 23:47:06,171 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 482 predicate places. [2024-06-27 23:47:06,171 INFO L495 AbstractCegarLoop]: Abstraction has has 512 places, 442 transitions, 5223 flow [2024-06-27 23:47:06,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:47:06,171 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:47:06,171 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:47:06,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2024-06-27 23:47:06,172 INFO L420 AbstractCegarLoop]: === Iteration 210 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:47:06,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:47:06,172 INFO L85 PathProgramCache]: Analyzing trace with hash -639057798, now seen corresponding path program 25 times [2024-06-27 23:47:06,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:47:06,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949610004] [2024-06-27 23:47:06,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:47:06,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:47:06,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:47:07,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:47:07,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:47:07,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949610004] [2024-06-27 23:47:07,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949610004] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:47:07,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:47:07,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:47:07,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054219241] [2024-06-27 23:47:07,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:47:07,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:47:07,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:47:07,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:47:07,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:47:07,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:47:07,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 512 places, 442 transitions, 5223 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:47:07,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:47:07,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:47:07,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:47:08,662 INFO L124 PetriNetUnfolderBase]: 1033/1851 cut-off events. [2024-06-27 23:47:08,662 INFO L125 PetriNetUnfolderBase]: For 382081/382081 co-relation queries the response was YES. [2024-06-27 23:47:08,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14985 conditions, 1851 events. 1033/1851 cut-off events. For 382081/382081 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 11095 event pairs, 203 based on Foata normal form. 2/1851 useless extension candidates. Maximal degree in co-relation 14754. Up to 1799 conditions per place. [2024-06-27 23:47:08,692 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 426 selfloop transitions, 26 changer transitions 0/454 dead transitions. [2024-06-27 23:47:08,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 523 places, 454 transitions, 6181 flow [2024-06-27 23:47:08,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:47:08,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:47:08,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 125 transitions. [2024-06-27 23:47:08,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33602150537634407 [2024-06-27 23:47:08,693 INFO L175 Difference]: Start difference. First operand has 512 places, 442 transitions, 5223 flow. Second operand 12 states and 125 transitions. [2024-06-27 23:47:08,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 523 places, 454 transitions, 6181 flow [2024-06-27 23:47:10,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 511 places, 454 transitions, 6070 flow, removed 7 selfloop flow, removed 12 redundant places. [2024-06-27 23:47:10,586 INFO L231 Difference]: Finished difference. Result has 512 places, 443 transitions, 5200 flow [2024-06-27 23:47:10,586 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5112, PETRI_DIFFERENCE_MINUEND_PLACES=500, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=442, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=416, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5200, PETRI_PLACES=512, PETRI_TRANSITIONS=443} [2024-06-27 23:47:10,587 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 482 predicate places. [2024-06-27 23:47:10,587 INFO L495 AbstractCegarLoop]: Abstraction has has 512 places, 443 transitions, 5200 flow [2024-06-27 23:47:10,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:47:10,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:47:10,587 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:47:10,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2024-06-27 23:47:10,587 INFO L420 AbstractCegarLoop]: === Iteration 211 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:47:10,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:47:10,588 INFO L85 PathProgramCache]: Analyzing trace with hash 36515132, now seen corresponding path program 20 times [2024-06-27 23:47:10,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:47:10,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863711702] [2024-06-27 23:47:10,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:47:10,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:47:10,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:47:12,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:47:12,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:47:12,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863711702] [2024-06-27 23:47:12,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863711702] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:47:12,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:47:12,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:47:12,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90430571] [2024-06-27 23:47:12,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:47:12,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:47:12,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:47:12,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:47:12,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:47:12,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:47:12,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 512 places, 443 transitions, 5200 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:47:12,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:47:12,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:47:12,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:47:13,154 INFO L124 PetriNetUnfolderBase]: 1039/1861 cut-off events. [2024-06-27 23:47:13,154 INFO L125 PetriNetUnfolderBase]: For 387380/387380 co-relation queries the response was YES. [2024-06-27 23:47:13,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15116 conditions, 1861 events. 1039/1861 cut-off events. For 387380/387380 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 11139 event pairs, 203 based on Foata normal form. 2/1861 useless extension candidates. Maximal degree in co-relation 14884. Up to 1773 conditions per place. [2024-06-27 23:47:13,184 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 411 selfloop transitions, 43 changer transitions 0/456 dead transitions. [2024-06-27 23:47:13,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 523 places, 456 transitions, 6224 flow [2024-06-27 23:47:13,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:47:13,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:47:13,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 131 transitions. [2024-06-27 23:47:13,185 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3521505376344086 [2024-06-27 23:47:13,186 INFO L175 Difference]: Start difference. First operand has 512 places, 443 transitions, 5200 flow. Second operand 12 states and 131 transitions. [2024-06-27 23:47:13,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 523 places, 456 transitions, 6224 flow [2024-06-27 23:47:14,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 513 places, 456 transitions, 6148 flow, removed 13 selfloop flow, removed 10 redundant places. [2024-06-27 23:47:14,992 INFO L231 Difference]: Finished difference. Result has 514 places, 445 transitions, 5303 flow [2024-06-27 23:47:14,992 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5124, PETRI_DIFFERENCE_MINUEND_PLACES=502, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=443, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=400, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5303, PETRI_PLACES=514, PETRI_TRANSITIONS=445} [2024-06-27 23:47:14,993 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 484 predicate places. [2024-06-27 23:47:14,993 INFO L495 AbstractCegarLoop]: Abstraction has has 514 places, 445 transitions, 5303 flow [2024-06-27 23:47:14,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:47:14,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:47:14,993 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:47:14,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2024-06-27 23:47:14,993 INFO L420 AbstractCegarLoop]: === Iteration 212 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:47:14,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:47:14,994 INFO L85 PathProgramCache]: Analyzing trace with hash 862201326, now seen corresponding path program 26 times [2024-06-27 23:47:14,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:47:14,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102407527] [2024-06-27 23:47:14,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:47:14,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:47:15,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:47:16,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:47:16,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:47:16,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102407527] [2024-06-27 23:47:16,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102407527] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:47:16,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:47:16,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:47:16,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723789803] [2024-06-27 23:47:16,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:47:16,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:47:16,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:47:16,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:47:16,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:47:16,428 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:47:16,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 514 places, 445 transitions, 5303 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:47:16,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:47:16,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:47:16,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:47:17,029 INFO L124 PetriNetUnfolderBase]: 1043/1869 cut-off events. [2024-06-27 23:47:17,029 INFO L125 PetriNetUnfolderBase]: For 392477/392477 co-relation queries the response was YES. [2024-06-27 23:47:17,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15216 conditions, 1869 events. 1043/1869 cut-off events. For 392477/392477 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 11227 event pairs, 203 based on Foata normal form. 2/1869 useless extension candidates. Maximal degree in co-relation 14983. Up to 1790 conditions per place. [2024-06-27 23:47:17,058 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 418 selfloop transitions, 37 changer transitions 0/457 dead transitions. [2024-06-27 23:47:17,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 524 places, 457 transitions, 6269 flow [2024-06-27 23:47:17,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:47:17,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:47:17,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-27 23:47:17,059 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36070381231671556 [2024-06-27 23:47:17,060 INFO L175 Difference]: Start difference. First operand has 514 places, 445 transitions, 5303 flow. Second operand 11 states and 123 transitions. [2024-06-27 23:47:17,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 524 places, 457 transitions, 6269 flow [2024-06-27 23:47:18,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 514 places, 457 transitions, 6112 flow, removed 37 selfloop flow, removed 10 redundant places. [2024-06-27 23:47:18,971 INFO L231 Difference]: Finished difference. Result has 515 places, 446 transitions, 5258 flow [2024-06-27 23:47:18,971 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5146, PETRI_DIFFERENCE_MINUEND_PLACES=504, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=445, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=408, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5258, PETRI_PLACES=515, PETRI_TRANSITIONS=446} [2024-06-27 23:47:18,971 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 485 predicate places. [2024-06-27 23:47:18,971 INFO L495 AbstractCegarLoop]: Abstraction has has 515 places, 446 transitions, 5258 flow [2024-06-27 23:47:18,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:47:18,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:47:18,972 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:47:18,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2024-06-27 23:47:18,972 INFO L420 AbstractCegarLoop]: === Iteration 213 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:47:18,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:47:18,973 INFO L85 PathProgramCache]: Analyzing trace with hash 838130676, now seen corresponding path program 21 times [2024-06-27 23:47:18,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:47:18,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553324826] [2024-06-27 23:47:18,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:47:18,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:47:18,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:47:20,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:47:20,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:47:20,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553324826] [2024-06-27 23:47:20,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553324826] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:47:20,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:47:20,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:47:20,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011107363] [2024-06-27 23:47:20,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:47:20,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:47:20,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:47:20,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:47:20,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:47:20,820 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:47:20,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 515 places, 446 transitions, 5258 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:47:20,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:47:20,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:47:20,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:47:21,567 INFO L124 PetriNetUnfolderBase]: 1049/1879 cut-off events. [2024-06-27 23:47:21,567 INFO L125 PetriNetUnfolderBase]: For 396617/396617 co-relation queries the response was YES. [2024-06-27 23:47:21,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15283 conditions, 1879 events. 1049/1879 cut-off events. For 396617/396617 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 11262 event pairs, 204 based on Foata normal form. 2/1879 useless extension candidates. Maximal degree in co-relation 15049. Up to 1818 conditions per place. [2024-06-27 23:47:21,612 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 426 selfloop transitions, 31 changer transitions 0/459 dead transitions. [2024-06-27 23:47:21,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 526 places, 459 transitions, 6292 flow [2024-06-27 23:47:21,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:47:21,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:47:21,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 128 transitions. [2024-06-27 23:47:21,614 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34408602150537637 [2024-06-27 23:47:21,614 INFO L175 Difference]: Start difference. First operand has 515 places, 446 transitions, 5258 flow. Second operand 12 states and 128 transitions. [2024-06-27 23:47:21,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 526 places, 459 transitions, 6292 flow [2024-06-27 23:47:23,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 517 places, 459 transitions, 6192 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-27 23:47:23,616 INFO L231 Difference]: Finished difference. Result has 518 places, 448 transitions, 5317 flow [2024-06-27 23:47:23,617 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5158, PETRI_DIFFERENCE_MINUEND_PLACES=506, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=446, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=415, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5317, PETRI_PLACES=518, PETRI_TRANSITIONS=448} [2024-06-27 23:47:23,617 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 488 predicate places. [2024-06-27 23:47:23,617 INFO L495 AbstractCegarLoop]: Abstraction has has 518 places, 448 transitions, 5317 flow [2024-06-27 23:47:23,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:47:23,617 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:47:23,617 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:47:23,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2024-06-27 23:47:23,618 INFO L420 AbstractCegarLoop]: === Iteration 214 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:47:23,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:47:23,618 INFO L85 PathProgramCache]: Analyzing trace with hash -336409128, now seen corresponding path program 4 times [2024-06-27 23:47:23,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:47:23,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057245422] [2024-06-27 23:47:23,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:47:23,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:47:23,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:47:25,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:47:25,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:47:25,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057245422] [2024-06-27 23:47:25,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057245422] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:47:25,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:47:25,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:47:25,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873860957] [2024-06-27 23:47:25,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:47:25,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:47:25,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:47:25,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:47:25,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:47:25,164 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:47:25,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 518 places, 448 transitions, 5317 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:47:25,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:47:25,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:47:25,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:47:25,905 INFO L124 PetriNetUnfolderBase]: 1053/1887 cut-off events. [2024-06-27 23:47:25,905 INFO L125 PetriNetUnfolderBase]: For 401178/401178 co-relation queries the response was YES. [2024-06-27 23:47:25,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15305 conditions, 1887 events. 1053/1887 cut-off events. For 401178/401178 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 11332 event pairs, 207 based on Foata normal form. 2/1887 useless extension candidates. Maximal degree in co-relation 15070. Up to 1845 conditions per place. [2024-06-27 23:47:25,941 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 441 selfloop transitions, 17 changer transitions 0/460 dead transitions. [2024-06-27 23:47:25,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 528 places, 460 transitions, 6275 flow [2024-06-27 23:47:25,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:47:25,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:47:25,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 112 transitions. [2024-06-27 23:47:25,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3284457478005865 [2024-06-27 23:47:25,942 INFO L175 Difference]: Start difference. First operand has 518 places, 448 transitions, 5317 flow. Second operand 11 states and 112 transitions. [2024-06-27 23:47:25,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 528 places, 460 transitions, 6275 flow [2024-06-27 23:47:27,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 518 places, 460 transitions, 6138 flow, removed 39 selfloop flow, removed 10 redundant places. [2024-06-27 23:47:27,959 INFO L231 Difference]: Finished difference. Result has 519 places, 449 transitions, 5238 flow [2024-06-27 23:47:27,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5180, PETRI_DIFFERENCE_MINUEND_PLACES=508, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=448, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=431, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5238, PETRI_PLACES=519, PETRI_TRANSITIONS=449} [2024-06-27 23:47:27,960 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 489 predicate places. [2024-06-27 23:47:27,960 INFO L495 AbstractCegarLoop]: Abstraction has has 519 places, 449 transitions, 5238 flow [2024-06-27 23:47:27,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:47:27,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:47:27,960 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:47:27,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2024-06-27 23:47:27,961 INFO L420 AbstractCegarLoop]: === Iteration 215 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:47:27,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:47:27,961 INFO L85 PathProgramCache]: Analyzing trace with hash 6434264, now seen corresponding path program 5 times [2024-06-27 23:47:27,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:47:27,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187205516] [2024-06-27 23:47:27,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:47:27,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:47:27,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:47:29,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:47:29,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:47:29,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187205516] [2024-06-27 23:47:29,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187205516] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:47:29,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:47:29,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:47:29,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960538679] [2024-06-27 23:47:29,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:47:29,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:47:29,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:47:29,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:47:29,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:47:29,928 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:47:29,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 519 places, 449 transitions, 5238 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:47:29,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:47:29,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:47:29,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:47:30,679 INFO L124 PetriNetUnfolderBase]: 1057/1895 cut-off events. [2024-06-27 23:47:30,679 INFO L125 PetriNetUnfolderBase]: For 404342/404342 co-relation queries the response was YES. [2024-06-27 23:47:30,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15240 conditions, 1895 events. 1057/1895 cut-off events. For 404342/404342 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 11389 event pairs, 203 based on Foata normal form. 2/1895 useless extension candidates. Maximal degree in co-relation 15004. Up to 1837 conditions per place. [2024-06-27 23:47:30,710 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 435 selfloop transitions, 25 changer transitions 0/462 dead transitions. [2024-06-27 23:47:30,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 529 places, 462 transitions, 6220 flow [2024-06-27 23:47:30,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:47:30,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:47:30,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-27 23:47:30,711 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3460410557184751 [2024-06-27 23:47:30,711 INFO L175 Difference]: Start difference. First operand has 519 places, 449 transitions, 5238 flow. Second operand 11 states and 118 transitions. [2024-06-27 23:47:30,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 529 places, 462 transitions, 6220 flow [2024-06-27 23:47:32,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 520 places, 462 transitions, 6172 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-27 23:47:32,442 INFO L231 Difference]: Finished difference. Result has 521 places, 450 transitions, 5266 flow [2024-06-27 23:47:32,443 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5190, PETRI_DIFFERENCE_MINUEND_PLACES=510, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=449, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=424, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5266, PETRI_PLACES=521, PETRI_TRANSITIONS=450} [2024-06-27 23:47:32,443 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 491 predicate places. [2024-06-27 23:47:32,443 INFO L495 AbstractCegarLoop]: Abstraction has has 521 places, 450 transitions, 5266 flow [2024-06-27 23:47:32,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:47:32,443 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:47:32,443 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:47:32,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2024-06-27 23:47:32,443 INFO L420 AbstractCegarLoop]: === Iteration 216 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:47:32,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:47:32,444 INFO L85 PathProgramCache]: Analyzing trace with hash 30259022, now seen corresponding path program 22 times [2024-06-27 23:47:32,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:47:32,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056135244] [2024-06-27 23:47:32,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:47:32,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:47:32,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:47:34,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:47:34,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:47:34,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056135244] [2024-06-27 23:47:34,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056135244] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:47:34,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:47:34,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:47:34,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929750040] [2024-06-27 23:47:34,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:47:34,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:47:34,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:47:34,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:47:34,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:47:34,343 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:47:34,344 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 521 places, 450 transitions, 5266 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:47:34,344 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:47:34,344 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:47:34,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:47:35,128 INFO L124 PetriNetUnfolderBase]: 1063/1905 cut-off events. [2024-06-27 23:47:35,128 INFO L125 PetriNetUnfolderBase]: For 410188/410188 co-relation queries the response was YES. [2024-06-27 23:47:35,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15435 conditions, 1905 events. 1063/1905 cut-off events. For 410188/410188 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 11485 event pairs, 207 based on Foata normal form. 2/1905 useless extension candidates. Maximal degree in co-relation 15198. Up to 1817 conditions per place. [2024-06-27 23:47:35,157 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 419 selfloop transitions, 42 changer transitions 0/463 dead transitions. [2024-06-27 23:47:35,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 532 places, 463 transitions, 6312 flow [2024-06-27 23:47:35,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:47:35,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:47:35,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2024-06-27 23:47:35,158 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-27 23:47:35,159 INFO L175 Difference]: Start difference. First operand has 521 places, 450 transitions, 5266 flow. Second operand 12 states and 132 transitions. [2024-06-27 23:47:35,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 532 places, 463 transitions, 6312 flow [2024-06-27 23:47:36,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 521 places, 463 transitions, 6226 flow, removed 9 selfloop flow, removed 11 redundant places. [2024-06-27 23:47:37,001 INFO L231 Difference]: Finished difference. Result has 522 places, 452 transitions, 5365 flow [2024-06-27 23:47:37,001 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5180, PETRI_DIFFERENCE_MINUEND_PLACES=510, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=450, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=408, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5365, PETRI_PLACES=522, PETRI_TRANSITIONS=452} [2024-06-27 23:47:37,002 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 492 predicate places. [2024-06-27 23:47:37,002 INFO L495 AbstractCegarLoop]: Abstraction has has 522 places, 452 transitions, 5365 flow [2024-06-27 23:47:37,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:47:37,002 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:47:37,002 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:47:37,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2024-06-27 23:47:37,002 INFO L420 AbstractCegarLoop]: === Iteration 217 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:47:37,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:47:37,003 INFO L85 PathProgramCache]: Analyzing trace with hash -245740, now seen corresponding path program 27 times [2024-06-27 23:47:37,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:47:37,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286182814] [2024-06-27 23:47:37,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:47:37,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:47:37,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:47:38,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:47:38,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:47:38,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286182814] [2024-06-27 23:47:38,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286182814] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:47:38,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:47:38,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:47:38,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709817424] [2024-06-27 23:47:38,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:47:38,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:47:38,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:47:38,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:47:38,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:47:38,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:47:38,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 522 places, 452 transitions, 5365 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:47:38,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:47:38,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:47:38,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:47:39,356 INFO L124 PetriNetUnfolderBase]: 1074/1926 cut-off events. [2024-06-27 23:47:39,356 INFO L125 PetriNetUnfolderBase]: For 447308/447308 co-relation queries the response was YES. [2024-06-27 23:47:39,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16015 conditions, 1926 events. 1074/1926 cut-off events. For 447308/447308 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 11649 event pairs, 210 based on Foata normal form. 2/1926 useless extension candidates. Maximal degree in co-relation 15777. Up to 1835 conditions per place. [2024-06-27 23:47:39,385 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 429 selfloop transitions, 36 changer transitions 0/467 dead transitions. [2024-06-27 23:47:39,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 533 places, 467 transitions, 6745 flow [2024-06-27 23:47:39,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:47:39,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:47:39,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 127 transitions. [2024-06-27 23:47:39,386 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34139784946236557 [2024-06-27 23:47:39,386 INFO L175 Difference]: Start difference. First operand has 522 places, 452 transitions, 5365 flow. Second operand 12 states and 127 transitions. [2024-06-27 23:47:39,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 533 places, 467 transitions, 6745 flow [2024-06-27 23:47:41,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 523 places, 467 transitions, 6582 flow, removed 41 selfloop flow, removed 10 redundant places. [2024-06-27 23:47:41,858 INFO L231 Difference]: Finished difference. Result has 524 places, 454 transitions, 5348 flow [2024-06-27 23:47:41,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5202, PETRI_DIFFERENCE_MINUEND_PLACES=512, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=452, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=417, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5348, PETRI_PLACES=524, PETRI_TRANSITIONS=454} [2024-06-27 23:47:41,859 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 494 predicate places. [2024-06-27 23:47:41,859 INFO L495 AbstractCegarLoop]: Abstraction has has 524 places, 454 transitions, 5348 flow [2024-06-27 23:47:41,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:47:41,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:47:41,859 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:47:41,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2024-06-27 23:47:41,859 INFO L420 AbstractCegarLoop]: === Iteration 218 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:47:41,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:47:41,860 INFO L85 PathProgramCache]: Analyzing trace with hash 6425336, now seen corresponding path program 23 times [2024-06-27 23:47:41,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:47:41,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829148151] [2024-06-27 23:47:41,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:47:41,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:47:41,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:47:43,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:47:43,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:47:43,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829148151] [2024-06-27 23:47:43,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829148151] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:47:43,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:47:43,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:47:43,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695457200] [2024-06-27 23:47:43,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:47:43,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:47:43,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:47:43,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:47:43,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:47:43,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:47:43,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 524 places, 454 transitions, 5348 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:47:43,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:47:43,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:47:43,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:47:44,700 INFO L124 PetriNetUnfolderBase]: 1080/1936 cut-off events. [2024-06-27 23:47:44,701 INFO L125 PetriNetUnfolderBase]: For 452285/452285 co-relation queries the response was YES. [2024-06-27 23:47:44,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16092 conditions, 1936 events. 1080/1936 cut-off events. For 452285/452285 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 11721 event pairs, 204 based on Foata normal form. 2/1936 useless extension candidates. Maximal degree in co-relation 15853. Up to 1822 conditions per place. [2024-06-27 23:47:44,732 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 428 selfloop transitions, 40 changer transitions 0/470 dead transitions. [2024-06-27 23:47:44,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 535 places, 470 transitions, 6442 flow [2024-06-27 23:47:44,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:47:44,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:47:44,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2024-06-27 23:47:44,733 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-27 23:47:44,733 INFO L175 Difference]: Start difference. First operand has 524 places, 454 transitions, 5348 flow. Second operand 12 states and 132 transitions. [2024-06-27 23:47:44,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 535 places, 470 transitions, 6442 flow [2024-06-27 23:47:46,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 527 places, 470 transitions, 6367 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-27 23:47:46,751 INFO L231 Difference]: Finished difference. Result has 528 places, 456 transitions, 5458 flow [2024-06-27 23:47:46,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5273, PETRI_DIFFERENCE_MINUEND_PLACES=516, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=454, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=414, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5458, PETRI_PLACES=528, PETRI_TRANSITIONS=456} [2024-06-27 23:47:46,752 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 498 predicate places. [2024-06-27 23:47:46,752 INFO L495 AbstractCegarLoop]: Abstraction has has 528 places, 456 transitions, 5458 flow [2024-06-27 23:47:46,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:47:46,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:47:46,752 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:47:46,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2024-06-27 23:47:46,752 INFO L420 AbstractCegarLoop]: === Iteration 219 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:47:46,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:47:46,753 INFO L85 PathProgramCache]: Analyzing trace with hash -240904, now seen corresponding path program 24 times [2024-06-27 23:47:46,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:47:46,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281221165] [2024-06-27 23:47:46,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:47:46,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:47:46,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:47:48,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:47:48,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:47:48,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281221165] [2024-06-27 23:47:48,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281221165] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:47:48,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:47:48,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:47:48,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123769659] [2024-06-27 23:47:48,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:47:48,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:47:48,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:47:48,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:47:48,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:47:48,471 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:47:48,471 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 528 places, 456 transitions, 5458 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:47:48,471 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:47:48,471 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:47:48,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:47:49,261 INFO L124 PetriNetUnfolderBase]: 1096/1962 cut-off events. [2024-06-27 23:47:49,261 INFO L125 PetriNetUnfolderBase]: For 492542/492542 co-relation queries the response was YES. [2024-06-27 23:47:49,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16957 conditions, 1962 events. 1096/1962 cut-off events. For 492542/492542 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 11905 event pairs, 215 based on Foata normal form. 2/1962 useless extension candidates. Maximal degree in co-relation 16716. Up to 1850 conditions per place. [2024-06-27 23:47:49,293 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 419 selfloop transitions, 52 changer transitions 0/473 dead transitions. [2024-06-27 23:47:49,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 538 places, 473 transitions, 7002 flow [2024-06-27 23:47:49,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:47:49,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:47:49,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-27 23:47:49,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3782991202346041 [2024-06-27 23:47:49,294 INFO L175 Difference]: Start difference. First operand has 528 places, 456 transitions, 5458 flow. Second operand 11 states and 129 transitions. [2024-06-27 23:47:49,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 538 places, 473 transitions, 7002 flow [2024-06-27 23:47:51,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 528 places, 473 transitions, 6839 flow, removed 43 selfloop flow, removed 10 redundant places. [2024-06-27 23:47:51,709 INFO L231 Difference]: Finished difference. Result has 529 places, 460 transitions, 5608 flow [2024-06-27 23:47:51,709 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5295, PETRI_DIFFERENCE_MINUEND_PLACES=518, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=456, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=406, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5608, PETRI_PLACES=529, PETRI_TRANSITIONS=460} [2024-06-27 23:47:51,709 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 499 predicate places. [2024-06-27 23:47:51,709 INFO L495 AbstractCegarLoop]: Abstraction has has 529 places, 460 transitions, 5608 flow [2024-06-27 23:47:51,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:47:51,710 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:47:51,710 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:47:51,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2024-06-27 23:47:51,710 INFO L420 AbstractCegarLoop]: === Iteration 220 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:47:51,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:47:51,710 INFO L85 PathProgramCache]: Analyzing trace with hash -645486888, now seen corresponding path program 28 times [2024-06-27 23:47:51,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:47:51,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351362733] [2024-06-27 23:47:51,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:47:51,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:47:51,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:47:53,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:47:53,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:47:53,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351362733] [2024-06-27 23:47:53,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351362733] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:47:53,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:47:53,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:47:53,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822198335] [2024-06-27 23:47:53,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:47:53,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:47:53,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:47:53,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:47:53,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:47:53,360 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:47:53,360 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 529 places, 460 transitions, 5608 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:47:53,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:47:53,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:47:53,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:47:54,182 INFO L124 PetriNetUnfolderBase]: 1100/1970 cut-off events. [2024-06-27 23:47:54,183 INFO L125 PetriNetUnfolderBase]: For 497427/497427 co-relation queries the response was YES. [2024-06-27 23:47:54,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16972 conditions, 1970 events. 1100/1970 cut-off events. For 497427/497427 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 11971 event pairs, 215 based on Foata normal form. 2/1970 useless extension candidates. Maximal degree in co-relation 16730. Up to 1891 conditions per place. [2024-06-27 23:47:54,209 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 430 selfloop transitions, 41 changer transitions 0/473 dead transitions. [2024-06-27 23:47:54,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 540 places, 473 transitions, 6620 flow [2024-06-27 23:47:54,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:47:54,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:47:54,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 130 transitions. [2024-06-27 23:47:54,211 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34946236559139787 [2024-06-27 23:47:54,211 INFO L175 Difference]: Start difference. First operand has 529 places, 460 transitions, 5608 flow. Second operand 12 states and 130 transitions. [2024-06-27 23:47:54,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 540 places, 473 transitions, 6620 flow [2024-06-27 23:47:56,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 533 places, 473 transitions, 6479 flow, removed 46 selfloop flow, removed 7 redundant places. [2024-06-27 23:47:56,583 INFO L231 Difference]: Finished difference. Result has 534 places, 461 transitions, 5591 flow [2024-06-27 23:47:56,583 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5467, PETRI_DIFFERENCE_MINUEND_PLACES=522, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=460, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5591, PETRI_PLACES=534, PETRI_TRANSITIONS=461} [2024-06-27 23:47:56,583 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 504 predicate places. [2024-06-27 23:47:56,583 INFO L495 AbstractCegarLoop]: Abstraction has has 534 places, 461 transitions, 5591 flow [2024-06-27 23:47:56,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:47:56,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:47:56,584 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:47:56,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2024-06-27 23:47:56,584 INFO L420 AbstractCegarLoop]: === Iteration 221 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:47:56,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:47:56,585 INFO L85 PathProgramCache]: Analyzing trace with hash 110185980, now seen corresponding path program 6 times [2024-06-27 23:47:56,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:47:56,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825610118] [2024-06-27 23:47:56,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:47:56,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:47:56,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:47:58,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:47:58,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:47:58,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825610118] [2024-06-27 23:47:58,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825610118] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:47:58,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:47:58,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:47:58,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760073071] [2024-06-27 23:47:58,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:47:58,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:47:58,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:47:58,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:47:58,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:47:58,884 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:47:58,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 534 places, 461 transitions, 5591 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:47:58,885 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:47:58,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:47:58,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:47:59,613 INFO L124 PetriNetUnfolderBase]: 1104/1978 cut-off events. [2024-06-27 23:47:59,614 INFO L125 PetriNetUnfolderBase]: For 500755/500755 co-relation queries the response was YES. [2024-06-27 23:47:59,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16973 conditions, 1978 events. 1104/1978 cut-off events. For 500755/500755 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 12041 event pairs, 215 based on Foata normal form. 2/1978 useless extension candidates. Maximal degree in co-relation 16729. Up to 1932 conditions per place. [2024-06-27 23:47:59,648 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 450 selfloop transitions, 21 changer transitions 0/473 dead transitions. [2024-06-27 23:47:59,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 543 places, 473 transitions, 6587 flow [2024-06-27 23:47:59,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:47:59,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:47:59,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-27 23:47:59,649 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-27 23:47:59,650 INFO L175 Difference]: Start difference. First operand has 534 places, 461 transitions, 5591 flow. Second operand 10 states and 110 transitions. [2024-06-27 23:47:59,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 543 places, 473 transitions, 6587 flow [2024-06-27 23:48:02,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 533 places, 473 transitions, 6477 flow, removed 15 selfloop flow, removed 10 redundant places. [2024-06-27 23:48:02,090 INFO L231 Difference]: Finished difference. Result has 534 places, 462 transitions, 5551 flow [2024-06-27 23:48:02,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5481, PETRI_DIFFERENCE_MINUEND_PLACES=524, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=461, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=440, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5551, PETRI_PLACES=534, PETRI_TRANSITIONS=462} [2024-06-27 23:48:02,091 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 504 predicate places. [2024-06-27 23:48:02,091 INFO L495 AbstractCegarLoop]: Abstraction has has 534 places, 462 transitions, 5551 flow [2024-06-27 23:48:02,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:48:02,091 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:48:02,091 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:48:02,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220 [2024-06-27 23:48:02,091 INFO L420 AbstractCegarLoop]: === Iteration 222 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:48:02,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:48:02,092 INFO L85 PathProgramCache]: Analyzing trace with hash -61414, now seen corresponding path program 25 times [2024-06-27 23:48:02,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:48:02,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96645193] [2024-06-27 23:48:02,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:48:02,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:48:02,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:48:04,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:48:04,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:48:04,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96645193] [2024-06-27 23:48:04,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96645193] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:48:04,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:48:04,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:48:04,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160520830] [2024-06-27 23:48:04,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:48:04,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:48:04,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:48:04,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:48:04,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:48:04,175 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:48:04,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 534 places, 462 transitions, 5551 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:48:04,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:48:04,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:48:04,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:48:05,039 INFO L124 PetriNetUnfolderBase]: 1110/1988 cut-off events. [2024-06-27 23:48:05,040 INFO L125 PetriNetUnfolderBase]: For 507379/507379 co-relation queries the response was YES. [2024-06-27 23:48:05,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17102 conditions, 1988 events. 1110/1988 cut-off events. For 507379/507379 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 12095 event pairs, 205 based on Foata normal form. 2/1988 useless extension candidates. Maximal degree in co-relation 16857. Up to 1874 conditions per place. [2024-06-27 23:48:05,069 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 433 selfloop transitions, 43 changer transitions 0/478 dead transitions. [2024-06-27 23:48:05,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 545 places, 478 transitions, 6669 flow [2024-06-27 23:48:05,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:48:05,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:48:05,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 131 transitions. [2024-06-27 23:48:05,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3521505376344086 [2024-06-27 23:48:05,070 INFO L175 Difference]: Start difference. First operand has 534 places, 462 transitions, 5551 flow. Second operand 12 states and 131 transitions. [2024-06-27 23:48:05,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 545 places, 478 transitions, 6669 flow [2024-06-27 23:48:07,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 536 places, 478 transitions, 6602 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-27 23:48:07,571 INFO L231 Difference]: Finished difference. Result has 537 places, 464 transitions, 5683 flow [2024-06-27 23:48:07,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5484, PETRI_DIFFERENCE_MINUEND_PLACES=525, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=462, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5683, PETRI_PLACES=537, PETRI_TRANSITIONS=464} [2024-06-27 23:48:07,571 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 507 predicate places. [2024-06-27 23:48:07,571 INFO L495 AbstractCegarLoop]: Abstraction has has 537 places, 464 transitions, 5683 flow [2024-06-27 23:48:07,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:48:07,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:48:07,572 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:48:07,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221 [2024-06-27 23:48:07,572 INFO L420 AbstractCegarLoop]: === Iteration 223 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:48:07,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:48:07,572 INFO L85 PathProgramCache]: Analyzing trace with hash -67924, now seen corresponding path program 26 times [2024-06-27 23:48:07,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:48:07,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692453673] [2024-06-27 23:48:07,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:48:07,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:48:07,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:48:09,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:48:09,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:48:09,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692453673] [2024-06-27 23:48:09,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692453673] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:48:09,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:48:09,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:48:09,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364277412] [2024-06-27 23:48:09,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:48:09,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:48:09,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:48:09,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:48:09,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:48:09,467 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:48:09,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 537 places, 464 transitions, 5683 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:48:09,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:48:09,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:48:09,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:48:10,301 INFO L124 PetriNetUnfolderBase]: 1106/1982 cut-off events. [2024-06-27 23:48:10,301 INFO L125 PetriNetUnfolderBase]: For 479453/479453 co-relation queries the response was YES. [2024-06-27 23:48:10,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16700 conditions, 1982 events. 1106/1982 cut-off events. For 479453/479453 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 12080 event pairs, 216 based on Foata normal form. 2/1982 useless extension candidates. Maximal degree in co-relation 16454. Up to 1921 conditions per place. [2024-06-27 23:48:10,333 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 440 selfloop transitions, 33 changer transitions 0/475 dead transitions. [2024-06-27 23:48:10,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 548 places, 475 transitions, 6661 flow [2024-06-27 23:48:10,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:48:10,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:48:10,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 128 transitions. [2024-06-27 23:48:10,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34408602150537637 [2024-06-27 23:48:10,334 INFO L175 Difference]: Start difference. First operand has 537 places, 464 transitions, 5683 flow. Second operand 12 states and 128 transitions. [2024-06-27 23:48:10,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 548 places, 475 transitions, 6661 flow [2024-06-27 23:48:12,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 538 places, 475 transitions, 6416 flow, removed 81 selfloop flow, removed 10 redundant places. [2024-06-27 23:48:12,597 INFO L231 Difference]: Finished difference. Result has 539 places, 464 transitions, 5509 flow [2024-06-27 23:48:12,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5438, PETRI_DIFFERENCE_MINUEND_PLACES=527, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=464, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=431, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5509, PETRI_PLACES=539, PETRI_TRANSITIONS=464} [2024-06-27 23:48:12,598 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 509 predicate places. [2024-06-27 23:48:12,598 INFO L495 AbstractCegarLoop]: Abstraction has has 539 places, 464 transitions, 5509 flow [2024-06-27 23:48:12,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:48:12,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:48:12,598 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:48:12,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable222 [2024-06-27 23:48:12,598 INFO L420 AbstractCegarLoop]: === Iteration 224 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:48:12,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:48:12,599 INFO L85 PathProgramCache]: Analyzing trace with hash 862023696, now seen corresponding path program 29 times [2024-06-27 23:48:12,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:48:12,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900464628] [2024-06-27 23:48:12,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:48:12,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:48:12,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:48:14,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:48:14,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:48:14,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900464628] [2024-06-27 23:48:14,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900464628] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:48:14,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:48:14,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:48:14,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958024336] [2024-06-27 23:48:14,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:48:14,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:48:14,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:48:14,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:48:14,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:48:14,310 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:48:14,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 539 places, 464 transitions, 5509 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:48:14,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:48:14,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:48:14,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:48:14,977 INFO L124 PetriNetUnfolderBase]: 1117/2003 cut-off events. [2024-06-27 23:48:14,977 INFO L125 PetriNetUnfolderBase]: For 516069/516069 co-relation queries the response was YES. [2024-06-27 23:48:15,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17021 conditions, 2003 events. 1117/2003 cut-off events. For 516069/516069 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 12254 event pairs, 215 based on Foata normal form. 2/2003 useless extension candidates. Maximal degree in co-relation 16774. Up to 1890 conditions per place. [2024-06-27 23:48:15,012 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 433 selfloop transitions, 44 changer transitions 0/479 dead transitions. [2024-06-27 23:48:15,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 549 places, 479 transitions, 6931 flow [2024-06-27 23:48:15,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:48:15,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:48:15,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-27 23:48:15,013 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36950146627565983 [2024-06-27 23:48:15,013 INFO L175 Difference]: Start difference. First operand has 539 places, 464 transitions, 5509 flow. Second operand 11 states and 126 transitions. [2024-06-27 23:48:15,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 549 places, 479 transitions, 6931 flow [2024-06-27 23:48:17,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 538 places, 479 transitions, 6827 flow, removed 10 selfloop flow, removed 11 redundant places. [2024-06-27 23:48:17,411 INFO L231 Difference]: Finished difference. Result has 539 places, 466 transitions, 5571 flow [2024-06-27 23:48:17,412 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5405, PETRI_DIFFERENCE_MINUEND_PLACES=528, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=464, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=421, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5571, PETRI_PLACES=539, PETRI_TRANSITIONS=466} [2024-06-27 23:48:17,412 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 509 predicate places. [2024-06-27 23:48:17,412 INFO L495 AbstractCegarLoop]: Abstraction has has 539 places, 466 transitions, 5571 flow [2024-06-27 23:48:17,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:48:17,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:48:17,412 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:48:17,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable223 [2024-06-27 23:48:17,413 INFO L420 AbstractCegarLoop]: === Iteration 225 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:48:17,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:48:17,413 INFO L85 PathProgramCache]: Analyzing trace with hash 862028346, now seen corresponding path program 30 times [2024-06-27 23:48:17,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:48:17,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397626032] [2024-06-27 23:48:17,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:48:17,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:48:17,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:48:18,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:48:18,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:48:18,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397626032] [2024-06-27 23:48:18,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397626032] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:48:18,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:48:18,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:48:18,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572847394] [2024-06-27 23:48:18,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:48:18,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:48:18,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:48:18,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:48:18,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:48:19,000 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:48:19,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 539 places, 466 transitions, 5571 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:48:19,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:48:19,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:48:19,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:48:19,749 INFO L124 PetriNetUnfolderBase]: 1121/2011 cut-off events. [2024-06-27 23:48:19,749 INFO L125 PetriNetUnfolderBase]: For 522430/522430 co-relation queries the response was YES. [2024-06-27 23:48:19,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17136 conditions, 2011 events. 1121/2011 cut-off events. For 522430/522430 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 12330 event pairs, 219 based on Foata normal form. 2/2011 useless extension candidates. Maximal degree in co-relation 16888. Up to 1923 conditions per place. [2024-06-27 23:48:19,781 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 434 selfloop transitions, 42 changer transitions 0/478 dead transitions. [2024-06-27 23:48:19,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 549 places, 478 transitions, 6585 flow [2024-06-27 23:48:19,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:48:19,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:48:19,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-27 23:48:19,782 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-27 23:48:19,783 INFO L175 Difference]: Start difference. First operand has 539 places, 466 transitions, 5571 flow. Second operand 11 states and 124 transitions. [2024-06-27 23:48:19,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 549 places, 478 transitions, 6585 flow [2024-06-27 23:48:22,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 542 places, 478 transitions, 6496 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-27 23:48:22,250 INFO L231 Difference]: Finished difference. Result has 543 places, 467 transitions, 5610 flow [2024-06-27 23:48:22,250 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5484, PETRI_DIFFERENCE_MINUEND_PLACES=532, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=466, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=424, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5610, PETRI_PLACES=543, PETRI_TRANSITIONS=467} [2024-06-27 23:48:22,251 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 513 predicate places. [2024-06-27 23:48:22,251 INFO L495 AbstractCegarLoop]: Abstraction has has 543 places, 467 transitions, 5610 flow [2024-06-27 23:48:22,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:48:22,251 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:48:22,251 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:48:22,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable224 [2024-06-27 23:48:22,251 INFO L420 AbstractCegarLoop]: === Iteration 226 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:48:22,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:48:22,251 INFO L85 PathProgramCache]: Analyzing trace with hash -632224086, now seen corresponding path program 27 times [2024-06-27 23:48:22,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:48:22,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260180244] [2024-06-27 23:48:22,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:48:22,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:48:22,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:48:24,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:48:24,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:48:24,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260180244] [2024-06-27 23:48:24,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260180244] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:48:24,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:48:24,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:48:24,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553223714] [2024-06-27 23:48:24,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:48:24,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:48:24,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:48:24,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:48:24,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:48:24,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:48:24,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 543 places, 467 transitions, 5610 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:48:24,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:48:24,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:48:24,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:48:25,335 INFO L124 PetriNetUnfolderBase]: 1127/2021 cut-off events. [2024-06-27 23:48:25,335 INFO L125 PetriNetUnfolderBase]: For 529370/529370 co-relation queries the response was YES. [2024-06-27 23:48:25,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17355 conditions, 2021 events. 1127/2021 cut-off events. For 529370/529370 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 12396 event pairs, 215 based on Foata normal form. 2/2021 useless extension candidates. Maximal degree in co-relation 17105. Up to 1948 conditions per place. [2024-06-27 23:48:25,369 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 451 selfloop transitions, 30 changer transitions 0/483 dead transitions. [2024-06-27 23:48:25,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 554 places, 483 transitions, 6742 flow [2024-06-27 23:48:25,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:48:25,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:48:25,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 128 transitions. [2024-06-27 23:48:25,370 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34408602150537637 [2024-06-27 23:48:25,370 INFO L175 Difference]: Start difference. First operand has 543 places, 467 transitions, 5610 flow. Second operand 12 states and 128 transitions. [2024-06-27 23:48:25,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 554 places, 483 transitions, 6742 flow [2024-06-27 23:48:28,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 545 places, 483 transitions, 6630 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-27 23:48:28,095 INFO L231 Difference]: Finished difference. Result has 546 places, 469 transitions, 5675 flow [2024-06-27 23:48:28,095 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5498, PETRI_DIFFERENCE_MINUEND_PLACES=534, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=467, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=437, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5675, PETRI_PLACES=546, PETRI_TRANSITIONS=469} [2024-06-27 23:48:28,095 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 516 predicate places. [2024-06-27 23:48:28,095 INFO L495 AbstractCegarLoop]: Abstraction has has 546 places, 469 transitions, 5675 flow [2024-06-27 23:48:28,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:48:28,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:48:28,096 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:48:28,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225 [2024-06-27 23:48:28,096 INFO L420 AbstractCegarLoop]: === Iteration 227 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:48:28,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:48:28,096 INFO L85 PathProgramCache]: Analyzing trace with hash 30265532, now seen corresponding path program 28 times [2024-06-27 23:48:28,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:48:28,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504712443] [2024-06-27 23:48:28,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:48:28,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:48:28,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:48:29,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:48:29,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:48:29,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504712443] [2024-06-27 23:48:29,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504712443] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:48:29,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:48:29,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:48:29,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851674235] [2024-06-27 23:48:29,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:48:29,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:48:29,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:48:29,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:48:29,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:48:29,792 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:48:29,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 546 places, 469 transitions, 5675 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:48:29,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:48:29,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:48:29,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:48:30,511 INFO L124 PetriNetUnfolderBase]: 1133/2031 cut-off events. [2024-06-27 23:48:30,511 INFO L125 PetriNetUnfolderBase]: For 536807/536807 co-relation queries the response was YES. [2024-06-27 23:48:30,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17523 conditions, 2031 events. 1133/2031 cut-off events. For 536807/536807 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 12467 event pairs, 218 based on Foata normal form. 2/2031 useless extension candidates. Maximal degree in co-relation 17272. Up to 1938 conditions per place. [2024-06-27 23:48:30,546 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 439 selfloop transitions, 42 changer transitions 0/483 dead transitions. [2024-06-27 23:48:30,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 557 places, 483 transitions, 6791 flow [2024-06-27 23:48:30,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:48:30,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:48:30,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 133 transitions. [2024-06-27 23:48:30,547 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3575268817204301 [2024-06-27 23:48:30,547 INFO L175 Difference]: Start difference. First operand has 546 places, 469 transitions, 5675 flow. Second operand 12 states and 133 transitions. [2024-06-27 23:48:30,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 557 places, 483 transitions, 6791 flow [2024-06-27 23:48:33,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 547 places, 483 transitions, 6636 flow, removed 49 selfloop flow, removed 10 redundant places. [2024-06-27 23:48:33,269 INFO L231 Difference]: Finished difference. Result has 548 places, 471 transitions, 5725 flow [2024-06-27 23:48:33,270 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5520, PETRI_DIFFERENCE_MINUEND_PLACES=536, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=469, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=427, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5725, PETRI_PLACES=548, PETRI_TRANSITIONS=471} [2024-06-27 23:48:33,270 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 518 predicate places. [2024-06-27 23:48:33,270 INFO L495 AbstractCegarLoop]: Abstraction has has 548 places, 471 transitions, 5725 flow [2024-06-27 23:48:33,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:48:33,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:48:33,270 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:48:33,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable226 [2024-06-27 23:48:33,271 INFO L420 AbstractCegarLoop]: === Iteration 228 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:48:33,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:48:33,271 INFO L85 PathProgramCache]: Analyzing trace with hash 831874380, now seen corresponding path program 31 times [2024-06-27 23:48:33,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:48:33,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844054491] [2024-06-27 23:48:33,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:48:33,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:48:33,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:48:34,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:48:34,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:48:34,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844054491] [2024-06-27 23:48:34,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844054491] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:48:34,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:48:34,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:48:34,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736741431] [2024-06-27 23:48:34,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:48:34,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:48:34,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:48:34,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:48:34,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:48:34,894 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:48:34,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 548 places, 471 transitions, 5725 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:48:34,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:48:34,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:48:34,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:48:35,645 INFO L124 PetriNetUnfolderBase]: 1137/2039 cut-off events. [2024-06-27 23:48:35,646 INFO L125 PetriNetUnfolderBase]: For 541197/541197 co-relation queries the response was YES. [2024-06-27 23:48:35,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17521 conditions, 2039 events. 1137/2039 cut-off events. For 541197/541197 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 12504 event pairs, 221 based on Foata normal form. 2/2039 useless extension candidates. Maximal degree in co-relation 17269. Up to 1987 conditions per place. [2024-06-27 23:48:35,681 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 454 selfloop transitions, 27 changer transitions 0/483 dead transitions. [2024-06-27 23:48:35,681 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 559 places, 483 transitions, 6749 flow [2024-06-27 23:48:35,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:48:35,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:48:35,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 124 transitions. [2024-06-27 23:48:35,682 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-27 23:48:35,682 INFO L175 Difference]: Start difference. First operand has 548 places, 471 transitions, 5725 flow. Second operand 12 states and 124 transitions. [2024-06-27 23:48:35,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 559 places, 483 transitions, 6749 flow [2024-06-27 23:48:38,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 549 places, 483 transitions, 6566 flow, removed 51 selfloop flow, removed 10 redundant places. [2024-06-27 23:48:38,347 INFO L231 Difference]: Finished difference. Result has 550 places, 472 transitions, 5640 flow [2024-06-27 23:48:38,348 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5542, PETRI_DIFFERENCE_MINUEND_PLACES=538, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=471, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=444, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5640, PETRI_PLACES=550, PETRI_TRANSITIONS=472} [2024-06-27 23:48:38,348 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 520 predicate places. [2024-06-27 23:48:38,348 INFO L495 AbstractCegarLoop]: Abstraction has has 550 places, 472 transitions, 5640 flow [2024-06-27 23:48:38,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:48:38,348 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:48:38,348 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:48:38,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable227 [2024-06-27 23:48:38,349 INFO L420 AbstractCegarLoop]: === Iteration 229 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:48:38,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:48:38,349 INFO L85 PathProgramCache]: Analyzing trace with hash 862028532, now seen corresponding path program 29 times [2024-06-27 23:48:38,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:48:38,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392477186] [2024-06-27 23:48:38,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:48:38,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:48:38,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:48:39,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:48:39,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:48:39,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392477186] [2024-06-27 23:48:39,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392477186] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:48:39,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:48:39,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:48:39,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591392875] [2024-06-27 23:48:39,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:48:39,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:48:39,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:48:39,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:48:39,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:48:39,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:48:39,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 550 places, 472 transitions, 5640 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:48:39,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:48:39,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:48:39,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:48:40,785 INFO L124 PetriNetUnfolderBase]: 1143/2049 cut-off events. [2024-06-27 23:48:40,785 INFO L125 PetriNetUnfolderBase]: For 546797/546797 co-relation queries the response was YES. [2024-06-27 23:48:40,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17574 conditions, 2049 events. 1143/2049 cut-off events. For 546797/546797 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 12585 event pairs, 220 based on Foata normal form. 2/2049 useless extension candidates. Maximal degree in co-relation 17321. Up to 1931 conditions per place. [2024-06-27 23:48:40,822 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 431 selfloop transitions, 53 changer transitions 0/486 dead transitions. [2024-06-27 23:48:40,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 561 places, 486 transitions, 6766 flow [2024-06-27 23:48:40,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:48:40,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:48:40,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 137 transitions. [2024-06-27 23:48:40,823 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3682795698924731 [2024-06-27 23:48:40,823 INFO L175 Difference]: Start difference. First operand has 550 places, 472 transitions, 5640 flow. Second operand 12 states and 137 transitions. [2024-06-27 23:48:40,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 561 places, 486 transitions, 6766 flow [2024-06-27 23:48:43,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 551 places, 486 transitions, 6682 flow, removed 16 selfloop flow, removed 10 redundant places. [2024-06-27 23:48:43,664 INFO L231 Difference]: Finished difference. Result has 552 places, 474 transitions, 5787 flow [2024-06-27 23:48:43,664 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5556, PETRI_DIFFERENCE_MINUEND_PLACES=540, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=472, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5787, PETRI_PLACES=552, PETRI_TRANSITIONS=474} [2024-06-27 23:48:43,664 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 522 predicate places. [2024-06-27 23:48:43,664 INFO L495 AbstractCegarLoop]: Abstraction has has 552 places, 474 transitions, 5787 flow [2024-06-27 23:48:43,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:48:43,666 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:48:43,666 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:48:43,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable228 [2024-06-27 23:48:43,667 INFO L420 AbstractCegarLoop]: === Iteration 230 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:48:43,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:48:43,667 INFO L85 PathProgramCache]: Analyzing trace with hash 199711708, now seen corresponding path program 32 times [2024-06-27 23:48:43,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:48:43,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585162825] [2024-06-27 23:48:43,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:48:43,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:48:43,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:48:45,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:48:45,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:48:45,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585162825] [2024-06-27 23:48:45,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585162825] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:48:45,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:48:45,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:48:45,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305927444] [2024-06-27 23:48:45,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:48:45,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:48:45,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:48:45,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:48:45,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:48:45,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:48:45,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 552 places, 474 transitions, 5787 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:48:45,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:48:45,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:48:45,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:48:46,046 INFO L124 PetriNetUnfolderBase]: 1140/2044 cut-off events. [2024-06-27 23:48:46,046 INFO L125 PetriNetUnfolderBase]: For 516600/516600 co-relation queries the response was YES. [2024-06-27 23:48:46,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17184 conditions, 2044 events. 1140/2044 cut-off events. For 516600/516600 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 12568 event pairs, 219 based on Foata normal form. 2/2044 useless extension candidates. Maximal degree in co-relation 16930. Up to 2007 conditions per place. [2024-06-27 23:48:46,082 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 464 selfloop transitions, 19 changer transitions 0/485 dead transitions. [2024-06-27 23:48:46,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 563 places, 485 transitions, 6777 flow [2024-06-27 23:48:46,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:48:46,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:48:46,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 121 transitions. [2024-06-27 23:48:46,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32526881720430106 [2024-06-27 23:48:46,084 INFO L175 Difference]: Start difference. First operand has 552 places, 474 transitions, 5787 flow. Second operand 12 states and 121 transitions. [2024-06-27 23:48:46,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 563 places, 485 transitions, 6777 flow [2024-06-27 23:48:49,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 553 places, 485 transitions, 6540 flow, removed 67 selfloop flow, removed 10 redundant places. [2024-06-27 23:48:49,061 INFO L231 Difference]: Finished difference. Result has 554 places, 474 transitions, 5592 flow [2024-06-27 23:48:49,061 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5550, PETRI_DIFFERENCE_MINUEND_PLACES=542, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=474, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=455, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5592, PETRI_PLACES=554, PETRI_TRANSITIONS=474} [2024-06-27 23:48:49,061 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 524 predicate places. [2024-06-27 23:48:49,062 INFO L495 AbstractCegarLoop]: Abstraction has has 554 places, 474 transitions, 5592 flow [2024-06-27 23:48:49,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:48:49,062 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:48:49,062 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:48:49,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229 [2024-06-27 23:48:49,062 INFO L420 AbstractCegarLoop]: === Iteration 231 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:48:49,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:48:49,062 INFO L85 PathProgramCache]: Analyzing trace with hash 695794752, now seen corresponding path program 30 times [2024-06-27 23:48:49,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:48:49,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5446845] [2024-06-27 23:48:49,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:48:49,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:48:49,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:48:50,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:48:50,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:48:50,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5446845] [2024-06-27 23:48:50,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5446845] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:48:50,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:48:50,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:48:50,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631559272] [2024-06-27 23:48:50,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:48:50,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:48:50,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:48:50,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:48:50,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:48:50,779 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:48:50,780 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 554 places, 474 transitions, 5592 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:48:50,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:48:50,780 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:48:50,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:48:51,643 INFO L124 PetriNetUnfolderBase]: 1146/2054 cut-off events. [2024-06-27 23:48:51,643 INFO L125 PetriNetUnfolderBase]: For 520870/520870 co-relation queries the response was YES. [2024-06-27 23:48:51,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17131 conditions, 2054 events. 1146/2054 cut-off events. For 520870/520870 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 12651 event pairs, 219 based on Foata normal form. 2/2054 useless extension candidates. Maximal degree in co-relation 16876. Up to 1945 conditions per place. [2024-06-27 23:48:51,675 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 429 selfloop transitions, 56 changer transitions 0/487 dead transitions. [2024-06-27 23:48:51,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 565 places, 487 transitions, 6714 flow [2024-06-27 23:48:51,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:48:51,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:48:51,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 138 transitions. [2024-06-27 23:48:51,688 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-27 23:48:51,689 INFO L175 Difference]: Start difference. First operand has 554 places, 474 transitions, 5592 flow. Second operand 12 states and 138 transitions. [2024-06-27 23:48:51,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 565 places, 487 transitions, 6714 flow [2024-06-27 23:48:54,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 554 places, 487 transitions, 6662 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-27 23:48:54,570 INFO L231 Difference]: Finished difference. Result has 555 places, 476 transitions, 5781 flow [2024-06-27 23:48:54,570 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5540, PETRI_DIFFERENCE_MINUEND_PLACES=543, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=474, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=418, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5781, PETRI_PLACES=555, PETRI_TRANSITIONS=476} [2024-06-27 23:48:54,570 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 525 predicate places. [2024-06-27 23:48:54,570 INFO L495 AbstractCegarLoop]: Abstraction has has 555 places, 476 transitions, 5781 flow [2024-06-27 23:48:54,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:48:54,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:48:54,571 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:48:54,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230 [2024-06-27 23:48:54,571 INFO L420 AbstractCegarLoop]: === Iteration 232 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:48:54,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:48:54,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1828859738, now seen corresponding path program 33 times [2024-06-27 23:48:54,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:48:54,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870912379] [2024-06-27 23:48:54,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:48:54,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:48:54,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:48:55,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:48:55,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:48:55,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870912379] [2024-06-27 23:48:55,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870912379] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:48:55,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:48:55,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:48:55,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037330230] [2024-06-27 23:48:55,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:48:55,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:48:55,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:48:55,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:48:55,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:48:56,018 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:48:56,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 555 places, 476 transitions, 5781 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:48:56,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:48:56,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:48:56,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:48:56,760 INFO L124 PetriNetUnfolderBase]: 1143/2049 cut-off events. [2024-06-27 23:48:56,760 INFO L125 PetriNetUnfolderBase]: For 490060/490060 co-relation queries the response was YES. [2024-06-27 23:48:56,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16797 conditions, 2049 events. 1143/2049 cut-off events. For 490060/490060 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 12575 event pairs, 221 based on Foata normal form. 2/2049 useless extension candidates. Maximal degree in co-relation 16541. Up to 1970 conditions per place. [2024-06-27 23:48:56,795 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 447 selfloop transitions, 38 changer transitions 0/487 dead transitions. [2024-06-27 23:48:56,796 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 565 places, 487 transitions, 6775 flow [2024-06-27 23:48:56,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:48:56,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:48:56,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-27 23:48:56,797 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35777126099706746 [2024-06-27 23:48:56,797 INFO L175 Difference]: Start difference. First operand has 555 places, 476 transitions, 5781 flow. Second operand 11 states and 122 transitions. [2024-06-27 23:48:56,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 565 places, 487 transitions, 6775 flow [2024-06-27 23:48:59,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 555 places, 487 transitions, 6528 flow, removed 69 selfloop flow, removed 10 redundant places. [2024-06-27 23:48:59,274 INFO L231 Difference]: Finished difference. Result has 556 places, 476 transitions, 5614 flow [2024-06-27 23:48:59,274 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5534, PETRI_DIFFERENCE_MINUEND_PLACES=545, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=476, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=438, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5614, PETRI_PLACES=556, PETRI_TRANSITIONS=476} [2024-06-27 23:48:59,274 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 526 predicate places. [2024-06-27 23:48:59,275 INFO L495 AbstractCegarLoop]: Abstraction has has 556 places, 476 transitions, 5614 flow [2024-06-27 23:48:59,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:48:59,275 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:48:59,275 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:48:59,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231 [2024-06-27 23:48:59,275 INFO L420 AbstractCegarLoop]: === Iteration 233 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:48:59,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:48:59,275 INFO L85 PathProgramCache]: Analyzing trace with hash -136147924, now seen corresponding path program 34 times [2024-06-27 23:48:59,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:48:59,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246240019] [2024-06-27 23:48:59,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:48:59,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:48:59,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:49:00,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:49:00,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:49:00,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246240019] [2024-06-27 23:49:00,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246240019] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:49:00,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:49:00,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:49:00,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806879247] [2024-06-27 23:49:00,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:49:00,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:49:00,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:49:00,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:49:00,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:49:00,795 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:49:00,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 556 places, 476 transitions, 5614 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:49:00,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:49:00,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:49:00,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:49:01,503 INFO L124 PetriNetUnfolderBase]: 1147/2057 cut-off events. [2024-06-27 23:49:01,503 INFO L125 PetriNetUnfolderBase]: For 491975/491975 co-relation queries the response was YES. [2024-06-27 23:49:01,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16648 conditions, 2057 events. 1147/2057 cut-off events. For 491975/491975 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 12644 event pairs, 223 based on Foata normal form. 2/2057 useless extension candidates. Maximal degree in co-relation 16391. Up to 1972 conditions per place. [2024-06-27 23:49:01,608 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 443 selfloop transitions, 43 changer transitions 0/488 dead transitions. [2024-06-27 23:49:01,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 566 places, 488 transitions, 6648 flow [2024-06-27 23:49:01,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:49:01,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:49:01,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-27 23:49:01,609 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36070381231671556 [2024-06-27 23:49:01,609 INFO L175 Difference]: Start difference. First operand has 556 places, 476 transitions, 5614 flow. Second operand 11 states and 123 transitions. [2024-06-27 23:49:01,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 566 places, 488 transitions, 6648 flow [2024-06-27 23:49:04,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 556 places, 488 transitions, 6562 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-27 23:49:04,433 INFO L231 Difference]: Finished difference. Result has 557 places, 477 transitions, 5658 flow [2024-06-27 23:49:04,434 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5528, PETRI_DIFFERENCE_MINUEND_PLACES=546, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=476, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=433, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5658, PETRI_PLACES=557, PETRI_TRANSITIONS=477} [2024-06-27 23:49:04,434 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 527 predicate places. [2024-06-27 23:49:04,434 INFO L495 AbstractCegarLoop]: Abstraction has has 557 places, 477 transitions, 5658 flow [2024-06-27 23:49:04,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:49:04,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:49:04,434 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:49:04,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable232 [2024-06-27 23:49:04,435 INFO L420 AbstractCegarLoop]: === Iteration 234 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:49:04,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:49:04,435 INFO L85 PathProgramCache]: Analyzing trace with hash 36521642, now seen corresponding path program 31 times [2024-06-27 23:49:04,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:49:04,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538393176] [2024-06-27 23:49:04,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:49:04,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:49:04,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:49:06,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:49:06,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:49:06,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538393176] [2024-06-27 23:49:06,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538393176] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:49:06,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:49:06,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:49:06,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548747059] [2024-06-27 23:49:06,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:49:06,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:49:06,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:49:06,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:49:06,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:49:06,321 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:49:06,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 557 places, 477 transitions, 5658 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:49:06,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:49:06,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:49:06,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:49:07,027 INFO L124 PetriNetUnfolderBase]: 1153/2067 cut-off events. [2024-06-27 23:49:07,028 INFO L125 PetriNetUnfolderBase]: For 499700/499700 co-relation queries the response was YES. [2024-06-27 23:49:07,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16897 conditions, 2067 events. 1153/2067 cut-off events. For 499700/499700 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 12714 event pairs, 223 based on Foata normal form. 2/2067 useless extension candidates. Maximal degree in co-relation 16639. Up to 1974 conditions per place. [2024-06-27 23:49:07,064 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 446 selfloop transitions, 43 changer transitions 0/491 dead transitions. [2024-06-27 23:49:07,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 568 places, 491 transitions, 6802 flow [2024-06-27 23:49:07,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:49:07,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:49:07,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2024-06-27 23:49:07,065 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-27 23:49:07,065 INFO L175 Difference]: Start difference. First operand has 557 places, 477 transitions, 5658 flow. Second operand 12 states and 132 transitions. [2024-06-27 23:49:07,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 568 places, 491 transitions, 6802 flow [2024-06-27 23:49:09,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 559 places, 491 transitions, 6684 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-27 23:49:09,855 INFO L231 Difference]: Finished difference. Result has 560 places, 479 transitions, 5759 flow [2024-06-27 23:49:09,856 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5540, PETRI_DIFFERENCE_MINUEND_PLACES=548, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=477, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=434, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5759, PETRI_PLACES=560, PETRI_TRANSITIONS=479} [2024-06-27 23:49:09,856 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 530 predicate places. [2024-06-27 23:49:09,856 INFO L495 AbstractCegarLoop]: Abstraction has has 560 places, 479 transitions, 5759 flow [2024-06-27 23:49:09,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:49:09,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:49:09,857 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:49:09,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable233 [2024-06-27 23:49:09,857 INFO L420 AbstractCegarLoop]: === Iteration 235 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:49:09,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:49:09,857 INFO L85 PathProgramCache]: Analyzing trace with hash -136152574, now seen corresponding path program 35 times [2024-06-27 23:49:09,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:49:09,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90396770] [2024-06-27 23:49:09,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:49:09,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:49:09,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:49:11,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:49:11,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:49:11,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90396770] [2024-06-27 23:49:11,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90396770] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:49:11,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:49:11,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:49:11,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470972617] [2024-06-27 23:49:11,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:49:11,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:49:11,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:49:11,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:49:11,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:49:11,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:49:11,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 560 places, 479 transitions, 5759 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:49:11,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:49:11,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:49:11,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:49:12,184 INFO L124 PetriNetUnfolderBase]: 1150/2062 cut-off events. [2024-06-27 23:49:12,185 INFO L125 PetriNetUnfolderBase]: For 466396/466396 co-relation queries the response was YES. [2024-06-27 23:49:12,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16435 conditions, 2062 events. 1150/2062 cut-off events. For 466396/466396 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 12719 event pairs, 219 based on Foata normal form. 2/2062 useless extension candidates. Maximal degree in co-relation 16176. Up to 1957 conditions per place. [2024-06-27 23:49:12,216 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 444 selfloop transitions, 45 changer transitions 0/491 dead transitions. [2024-06-27 23:49:12,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 570 places, 491 transitions, 6763 flow [2024-06-27 23:49:12,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:49:12,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:49:12,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-27 23:49:12,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-27 23:49:12,217 INFO L175 Difference]: Start difference. First operand has 560 places, 479 transitions, 5759 flow. Second operand 11 states and 124 transitions. [2024-06-27 23:49:12,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 570 places, 491 transitions, 6763 flow [2024-06-27 23:49:15,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 560 places, 491 transitions, 6546 flow, removed 67 selfloop flow, removed 10 redundant places. [2024-06-27 23:49:15,091 INFO L231 Difference]: Finished difference. Result has 561 places, 479 transitions, 5636 flow [2024-06-27 23:49:15,091 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5542, PETRI_DIFFERENCE_MINUEND_PLACES=550, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=479, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=434, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5636, PETRI_PLACES=561, PETRI_TRANSITIONS=479} [2024-06-27 23:49:15,092 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 531 predicate places. [2024-06-27 23:49:15,092 INFO L495 AbstractCegarLoop]: Abstraction has has 561 places, 479 transitions, 5636 flow [2024-06-27 23:49:15,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:49:15,092 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:49:15,092 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:49:15,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable234 [2024-06-27 23:49:15,092 INFO L420 AbstractCegarLoop]: === Iteration 236 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:49:15,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:49:15,093 INFO L85 PathProgramCache]: Analyzing trace with hash -135968248, now seen corresponding path program 32 times [2024-06-27 23:49:15,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:49:15,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474791107] [2024-06-27 23:49:15,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:49:15,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:49:15,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:49:16,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:49:16,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:49:16,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474791107] [2024-06-27 23:49:16,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474791107] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:49:16,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:49:16,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:49:16,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565440985] [2024-06-27 23:49:16,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:49:16,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:49:16,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:49:16,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:49:16,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:49:16,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:49:16,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 561 places, 479 transitions, 5636 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:49:16,989 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:49:16,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:49:16,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:49:17,681 INFO L124 PetriNetUnfolderBase]: 1151/2064 cut-off events. [2024-06-27 23:49:17,681 INFO L125 PetriNetUnfolderBase]: For 450383/450383 co-relation queries the response was YES. [2024-06-27 23:49:17,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16144 conditions, 2064 events. 1151/2064 cut-off events. For 450383/450383 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 12715 event pairs, 221 based on Foata normal form. 2/2064 useless extension candidates. Maximal degree in co-relation 15884. Up to 1971 conditions per place. [2024-06-27 23:49:17,717 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 445 selfloop transitions, 46 changer transitions 0/493 dead transitions. [2024-06-27 23:49:17,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 572 places, 493 transitions, 6788 flow [2024-06-27 23:49:17,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:49:17,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:49:17,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2024-06-27 23:49:17,718 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-27 23:49:17,718 INFO L175 Difference]: Start difference. First operand has 561 places, 479 transitions, 5636 flow. Second operand 12 states and 132 transitions. [2024-06-27 23:49:17,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 572 places, 493 transitions, 6788 flow [2024-06-27 23:49:20,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 560 places, 493 transitions, 6608 flow, removed 8 selfloop flow, removed 12 redundant places. [2024-06-27 23:49:20,376 INFO L231 Difference]: Finished difference. Result has 561 places, 481 transitions, 5685 flow [2024-06-27 23:49:20,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5456, PETRI_DIFFERENCE_MINUEND_PLACES=549, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=479, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=433, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5685, PETRI_PLACES=561, PETRI_TRANSITIONS=481} [2024-06-27 23:49:20,377 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 531 predicate places. [2024-06-27 23:49:20,377 INFO L495 AbstractCegarLoop]: Abstraction has has 561 places, 481 transitions, 5685 flow [2024-06-27 23:49:20,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:49:20,377 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:49:20,377 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:49:20,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable235 [2024-06-27 23:49:20,377 INFO L420 AbstractCegarLoop]: === Iteration 237 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:49:20,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:49:20,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1673164062, now seen corresponding path program 36 times [2024-06-27 23:49:20,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:49:20,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867333612] [2024-06-27 23:49:20,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:49:20,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:49:20,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:49:21,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:49:21,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:49:21,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867333612] [2024-06-27 23:49:21,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867333612] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:49:21,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:49:21,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:49:21,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436200584] [2024-06-27 23:49:21,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:49:21,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:49:21,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:49:21,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:49:21,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:49:22,044 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:49:22,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 561 places, 481 transitions, 5685 flow. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:49:22,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:49:22,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:49:22,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:49:22,883 INFO L124 PetriNetUnfolderBase]: 1049/1972 cut-off events. [2024-06-27 23:49:22,884 INFO L125 PetriNetUnfolderBase]: For 509949/509952 co-relation queries the response was YES. [2024-06-27 23:49:22,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15775 conditions, 1972 events. 1049/1972 cut-off events. For 509949/509952 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 12746 event pairs, 94 based on Foata normal form. 3/1973 useless extension candidates. Maximal degree in co-relation 15516. Up to 1178 conditions per place. [2024-06-27 23:49:22,916 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 274 selfloop transitions, 59 changer transitions 0/503 dead transitions. [2024-06-27 23:49:22,917 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 571 places, 503 transitions, 6879 flow [2024-06-27 23:49:22,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:49:22,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:49:22,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 146 transitions. [2024-06-27 23:49:22,918 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4281524926686217 [2024-06-27 23:49:22,918 INFO L175 Difference]: Start difference. First operand has 561 places, 481 transitions, 5685 flow. Second operand 11 states and 146 transitions. [2024-06-27 23:49:22,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 571 places, 503 transitions, 6879 flow [2024-06-27 23:49:26,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 561 places, 503 transitions, 6672 flow, removed 59 selfloop flow, removed 10 redundant places. [2024-06-27 23:49:26,196 INFO L231 Difference]: Finished difference. Result has 562 places, 483 transitions, 5697 flow [2024-06-27 23:49:26,196 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5478, PETRI_DIFFERENCE_MINUEND_PLACES=551, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=481, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=423, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5697, PETRI_PLACES=562, PETRI_TRANSITIONS=483} [2024-06-27 23:49:26,196 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 532 predicate places. [2024-06-27 23:49:26,196 INFO L495 AbstractCegarLoop]: Abstraction has has 562 places, 483 transitions, 5697 flow [2024-06-27 23:49:26,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:49:26,196 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:49:26,197 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:49:26,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable236 [2024-06-27 23:49:26,197 INFO L420 AbstractCegarLoop]: === Iteration 238 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:49:26,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:49:26,197 INFO L85 PathProgramCache]: Analyzing trace with hash -694592234, now seen corresponding path program 33 times [2024-06-27 23:49:26,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:49:26,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577296385] [2024-06-27 23:49:26,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:49:26,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:49:26,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:49:27,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:49:27,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:49:27,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577296385] [2024-06-27 23:49:27,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577296385] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:49:27,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:49:27,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:49:27,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292709921] [2024-06-27 23:49:27,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:49:27,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:49:27,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:49:27,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:49:27,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:49:27,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:49:27,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 562 places, 483 transitions, 5697 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:49:27,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:49:27,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:49:27,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:49:29,051 INFO L124 PetriNetUnfolderBase]: 1174/2105 cut-off events. [2024-06-27 23:49:29,051 INFO L125 PetriNetUnfolderBase]: For 499169/499169 co-relation queries the response was YES. [2024-06-27 23:49:29,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16806 conditions, 2105 events. 1174/2105 cut-off events. For 499169/499169 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 13002 event pairs, 149 based on Foata normal form. 2/2105 useless extension candidates. Maximal degree in co-relation 16546. Up to 1918 conditions per place. [2024-06-27 23:49:29,088 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 435 selfloop transitions, 75 changer transitions 0/512 dead transitions. [2024-06-27 23:49:29,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 574 places, 512 transitions, 6930 flow [2024-06-27 23:49:29,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 23:49:29,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 23:49:29,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 152 transitions. [2024-06-27 23:49:29,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3771712158808933 [2024-06-27 23:49:29,093 INFO L175 Difference]: Start difference. First operand has 562 places, 483 transitions, 5697 flow. Second operand 13 states and 152 transitions. [2024-06-27 23:49:29,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 574 places, 512 transitions, 6930 flow [2024-06-27 23:49:32,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 566 places, 512 transitions, 6829 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-27 23:49:32,090 INFO L231 Difference]: Finished difference. Result has 568 places, 490 transitions, 5955 flow [2024-06-27 23:49:32,091 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5596, PETRI_DIFFERENCE_MINUEND_PLACES=554, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=483, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=408, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5955, PETRI_PLACES=568, PETRI_TRANSITIONS=490} [2024-06-27 23:49:32,091 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 538 predicate places. [2024-06-27 23:49:32,091 INFO L495 AbstractCegarLoop]: Abstraction has has 568 places, 490 transitions, 5955 flow [2024-06-27 23:49:32,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:49:32,091 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:49:32,091 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:49:32,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable237 [2024-06-27 23:49:32,091 INFO L420 AbstractCegarLoop]: === Iteration 239 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:49:32,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:49:32,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1497107076, now seen corresponding path program 37 times [2024-06-27 23:49:32,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:49:32,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136175682] [2024-06-27 23:49:32,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:49:32,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:49:32,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:49:33,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:49:33,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:49:33,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136175682] [2024-06-27 23:49:33,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136175682] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:49:33,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:49:33,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:49:33,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391313044] [2024-06-27 23:49:33,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:49:33,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:49:33,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:49:33,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:49:33,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:49:33,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:49:33,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 568 places, 490 transitions, 5955 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:49:33,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:49:33,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:49:33,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:49:34,382 INFO L124 PetriNetUnfolderBase]: 1182/2121 cut-off events. [2024-06-27 23:49:34,382 INFO L125 PetriNetUnfolderBase]: For 500175/500175 co-relation queries the response was YES. [2024-06-27 23:49:34,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17196 conditions, 2121 events. 1182/2121 cut-off events. For 500175/500175 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 13143 event pairs, 103 based on Foata normal form. 2/2121 useless extension candidates. Maximal degree in co-relation 16934. Up to 1631 conditions per place. [2024-06-27 23:49:34,420 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 428 selfloop transitions, 84 changer transitions 0/514 dead transitions. [2024-06-27 23:49:34,420 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 578 places, 514 transitions, 7480 flow [2024-06-27 23:49:34,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:49:34,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:49:34,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-06-27 23:49:34,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4252199413489736 [2024-06-27 23:49:34,422 INFO L175 Difference]: Start difference. First operand has 568 places, 490 transitions, 5955 flow. Second operand 11 states and 145 transitions. [2024-06-27 23:49:34,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 578 places, 514 transitions, 7480 flow [2024-06-27 23:49:37,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 567 places, 514 transitions, 7266 flow, removed 48 selfloop flow, removed 11 redundant places. [2024-06-27 23:49:37,451 INFO L231 Difference]: Finished difference. Result has 568 places, 492 transitions, 5970 flow [2024-06-27 23:49:37,452 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5741, PETRI_DIFFERENCE_MINUEND_PLACES=557, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=490, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=408, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5970, PETRI_PLACES=568, PETRI_TRANSITIONS=492} [2024-06-27 23:49:37,452 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 538 predicate places. [2024-06-27 23:49:37,452 INFO L495 AbstractCegarLoop]: Abstraction has has 568 places, 492 transitions, 5970 flow [2024-06-27 23:49:37,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:49:37,452 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:49:37,452 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:49:37,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable238 [2024-06-27 23:49:37,453 INFO L420 AbstractCegarLoop]: === Iteration 240 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:49:37,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:49:37,453 INFO L85 PathProgramCache]: Analyzing trace with hash 1138682370, now seen corresponding path program 34 times [2024-06-27 23:49:37,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:49:37,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667276427] [2024-06-27 23:49:37,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:49:37,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:49:37,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:49:39,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:49:39,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:49:39,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667276427] [2024-06-27 23:49:39,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667276427] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:49:39,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:49:39,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:49:39,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355223620] [2024-06-27 23:49:39,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:49:39,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:49:39,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:49:39,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:49:39,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:49:39,409 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:49:39,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 568 places, 492 transitions, 5970 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:49:39,410 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:49:39,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:49:39,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:49:40,236 INFO L124 PetriNetUnfolderBase]: 1198/2147 cut-off events. [2024-06-27 23:49:40,236 INFO L125 PetriNetUnfolderBase]: For 545742/545742 co-relation queries the response was YES. [2024-06-27 23:49:40,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17986 conditions, 2147 events. 1198/2147 cut-off events. For 545742/545742 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 13300 event pairs, 154 based on Foata normal form. 2/2147 useless extension candidates. Maximal degree in co-relation 17725. Up to 1911 conditions per place. [2024-06-27 23:49:40,273 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 427 selfloop transitions, 89 changer transitions 0/518 dead transitions. [2024-06-27 23:49:40,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 579 places, 518 transitions, 7669 flow [2024-06-27 23:49:40,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:49:40,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:49:40,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 155 transitions. [2024-06-27 23:49:40,275 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-27 23:49:40,275 INFO L175 Difference]: Start difference. First operand has 568 places, 492 transitions, 5970 flow. Second operand 12 states and 155 transitions. [2024-06-27 23:49:40,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 579 places, 518 transitions, 7669 flow [2024-06-27 23:49:43,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 570 places, 518 transitions, 7471 flow, removed 36 selfloop flow, removed 9 redundant places. [2024-06-27 23:49:43,502 INFO L231 Difference]: Finished difference. Result has 571 places, 496 transitions, 6151 flow [2024-06-27 23:49:43,502 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5774, PETRI_DIFFERENCE_MINUEND_PLACES=559, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=492, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6151, PETRI_PLACES=571, PETRI_TRANSITIONS=496} [2024-06-27 23:49:43,503 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 541 predicate places. [2024-06-27 23:49:43,503 INFO L495 AbstractCegarLoop]: Abstraction has has 571 places, 496 transitions, 6151 flow [2024-06-27 23:49:43,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:49:43,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:49:43,503 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:49:43,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable239 [2024-06-27 23:49:43,503 INFO L420 AbstractCegarLoop]: === Iteration 241 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:49:43,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:49:43,504 INFO L85 PathProgramCache]: Analyzing trace with hash 1138502694, now seen corresponding path program 38 times [2024-06-27 23:49:43,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:49:43,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173109182] [2024-06-27 23:49:43,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:49:43,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:49:43,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:49:44,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:49:44,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:49:44,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173109182] [2024-06-27 23:49:44,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173109182] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:49:44,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:49:44,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:49:44,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799482947] [2024-06-27 23:49:44,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:49:44,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:49:44,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:49:44,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:49:44,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:49:45,091 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:49:45,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 571 places, 496 transitions, 6151 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:49:45,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:49:45,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:49:45,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:49:45,821 INFO L124 PetriNetUnfolderBase]: 1217/2184 cut-off events. [2024-06-27 23:49:45,822 INFO L125 PetriNetUnfolderBase]: For 585717/585717 co-relation queries the response was YES. [2024-06-27 23:49:45,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18530 conditions, 2184 events. 1217/2184 cut-off events. For 585717/585717 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 13584 event pairs, 161 based on Foata normal form. 2/2184 useless extension candidates. Maximal degree in co-relation 18268. Up to 1966 conditions per place. [2024-06-27 23:49:45,861 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 441 selfloop transitions, 77 changer transitions 0/520 dead transitions. [2024-06-27 23:49:45,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 582 places, 520 transitions, 7699 flow [2024-06-27 23:49:45,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:49:45,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:49:45,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 152 transitions. [2024-06-27 23:49:45,862 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40860215053763443 [2024-06-27 23:49:45,862 INFO L175 Difference]: Start difference. First operand has 571 places, 496 transitions, 6151 flow. Second operand 12 states and 152 transitions. [2024-06-27 23:49:45,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 582 places, 520 transitions, 7699 flow [2024-06-27 23:49:49,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 573 places, 520 transitions, 7513 flow, removed 58 selfloop flow, removed 9 redundant places. [2024-06-27 23:49:49,663 INFO L231 Difference]: Finished difference. Result has 574 places, 500 transitions, 6199 flow [2024-06-27 23:49:49,664 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5967, PETRI_DIFFERENCE_MINUEND_PLACES=562, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=496, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=421, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6199, PETRI_PLACES=574, PETRI_TRANSITIONS=500} [2024-06-27 23:49:49,664 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 544 predicate places. [2024-06-27 23:49:49,664 INFO L495 AbstractCegarLoop]: Abstraction has has 574 places, 500 transitions, 6199 flow [2024-06-27 23:49:49,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:49:49,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:49:49,665 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:49:49,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable240 [2024-06-27 23:49:49,665 INFO L420 AbstractCegarLoop]: === Iteration 242 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:49:49,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:49:49,665 INFO L85 PathProgramCache]: Analyzing trace with hash 1134034044, now seen corresponding path program 39 times [2024-06-27 23:49:49,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:49:49,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777229229] [2024-06-27 23:49:49,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:49:49,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:49:49,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:49:51,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:49:51,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:49:51,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777229229] [2024-06-27 23:49:51,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777229229] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:49:51,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:49:51,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:49:51,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014363102] [2024-06-27 23:49:51,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:49:51,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:49:51,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:49:51,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:49:51,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:49:51,237 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:49:51,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 574 places, 500 transitions, 6199 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:49:51,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:49:51,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:49:51,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:49:51,932 INFO L124 PetriNetUnfolderBase]: 1221/2192 cut-off events. [2024-06-27 23:49:51,933 INFO L125 PetriNetUnfolderBase]: For 583167/583167 co-relation queries the response was YES. [2024-06-27 23:49:51,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18527 conditions, 2192 events. 1221/2192 cut-off events. For 583167/583167 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 13641 event pairs, 146 based on Foata normal form. 2/2192 useless extension candidates. Maximal degree in co-relation 18264. Up to 1908 conditions per place. [2024-06-27 23:49:51,974 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 441 selfloop transitions, 79 changer transitions 0/522 dead transitions. [2024-06-27 23:49:51,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 584 places, 522 transitions, 7716 flow [2024-06-27 23:49:51,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:49:51,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:49:51,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-27 23:49:51,976 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4310850439882698 [2024-06-27 23:49:51,976 INFO L175 Difference]: Start difference. First operand has 574 places, 500 transitions, 6199 flow. Second operand 11 states and 147 transitions. [2024-06-27 23:49:51,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 584 places, 522 transitions, 7716 flow [2024-06-27 23:49:55,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 575 places, 522 transitions, 7594 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-27 23:49:55,901 INFO L231 Difference]: Finished difference. Result has 576 places, 501 transitions, 6276 flow [2024-06-27 23:49:55,901 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6079, PETRI_DIFFERENCE_MINUEND_PLACES=565, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=500, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=421, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6276, PETRI_PLACES=576, PETRI_TRANSITIONS=501} [2024-06-27 23:49:55,901 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 546 predicate places. [2024-06-27 23:49:55,901 INFO L495 AbstractCegarLoop]: Abstraction has has 576 places, 501 transitions, 6276 flow [2024-06-27 23:49:55,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:49:55,901 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:49:55,902 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:49:55,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable241 [2024-06-27 23:49:55,902 INFO L420 AbstractCegarLoop]: === Iteration 243 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:49:55,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:49:55,902 INFO L85 PathProgramCache]: Analyzing trace with hash 378160286, now seen corresponding path program 40 times [2024-06-27 23:49:55,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:49:55,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815530558] [2024-06-27 23:49:55,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:49:55,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:49:55,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:49:57,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:49:57,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:49:57,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815530558] [2024-06-27 23:49:57,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815530558] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:49:57,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:49:57,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:49:57,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516233496] [2024-06-27 23:49:57,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:49:57,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:49:57,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:49:57,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:49:57,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:49:57,486 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:49:57,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 576 places, 501 transitions, 6276 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:49:57,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:49:57,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:49:57,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:49:58,220 INFO L124 PetriNetUnfolderBase]: 1218/2187 cut-off events. [2024-06-27 23:49:58,220 INFO L125 PetriNetUnfolderBase]: For 543661/543661 co-relation queries the response was YES. [2024-06-27 23:49:58,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18204 conditions, 2187 events. 1218/2187 cut-off events. For 543661/543661 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 13654 event pairs, 173 based on Foata normal form. 2/2187 useless extension candidates. Maximal degree in co-relation 17941. Up to 2014 conditions per place. [2024-06-27 23:49:58,260 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 443 selfloop transitions, 74 changer transitions 0/519 dead transitions. [2024-06-27 23:49:58,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 587 places, 519 transitions, 7354 flow [2024-06-27 23:49:58,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:49:58,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:49:58,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 149 transitions. [2024-06-27 23:49:58,261 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40053763440860213 [2024-06-27 23:49:58,261 INFO L175 Difference]: Start difference. First operand has 576 places, 501 transitions, 6276 flow. Second operand 12 states and 149 transitions. [2024-06-27 23:49:58,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 587 places, 519 transitions, 7354 flow [2024-06-27 23:50:01,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 577 places, 519 transitions, 7154 flow, removed 23 selfloop flow, removed 10 redundant places. [2024-06-27 23:50:01,825 INFO L231 Difference]: Finished difference. Result has 578 places, 501 transitions, 6232 flow [2024-06-27 23:50:01,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6076, PETRI_DIFFERENCE_MINUEND_PLACES=566, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=501, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=427, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6232, PETRI_PLACES=578, PETRI_TRANSITIONS=501} [2024-06-27 23:50:01,830 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 548 predicate places. [2024-06-27 23:50:01,830 INFO L495 AbstractCegarLoop]: Abstraction has has 578 places, 501 transitions, 6232 flow [2024-06-27 23:50:01,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:50:01,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:50:01,830 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:50:01,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable242 [2024-06-27 23:50:01,830 INFO L420 AbstractCegarLoop]: === Iteration 244 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:50:01,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:50:01,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1305949376, now seen corresponding path program 41 times [2024-06-27 23:50:01,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:50:01,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323177523] [2024-06-27 23:50:01,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:50:01,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:50:01,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:50:03,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:50:03,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:50:03,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323177523] [2024-06-27 23:50:03,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323177523] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:50:03,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:50:03,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:50:03,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871172179] [2024-06-27 23:50:03,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:50:03,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:50:03,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:50:03,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:50:03,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:50:03,444 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:50:03,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 578 places, 501 transitions, 6232 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:50:03,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:50:03,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:50:03,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:50:04,332 INFO L124 PetriNetUnfolderBase]: 1222/2195 cut-off events. [2024-06-27 23:50:04,332 INFO L125 PetriNetUnfolderBase]: For 543311/543311 co-relation queries the response was YES. [2024-06-27 23:50:04,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18173 conditions, 2195 events. 1222/2195 cut-off events. For 543311/543311 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 13660 event pairs, 198 based on Foata normal form. 2/2195 useless extension candidates. Maximal degree in co-relation 17909. Up to 2108 conditions per place. [2024-06-27 23:50:04,373 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 475 selfloop transitions, 40 changer transitions 0/517 dead transitions. [2024-06-27 23:50:04,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 587 places, 517 transitions, 7329 flow [2024-06-27 23:50:04,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:50:04,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:50:04,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-27 23:50:04,374 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-27 23:50:04,374 INFO L175 Difference]: Start difference. First operand has 578 places, 501 transitions, 6232 flow. Second operand 10 states and 124 transitions. [2024-06-27 23:50:04,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 587 places, 517 transitions, 7329 flow [2024-06-27 23:50:07,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 575 places, 517 transitions, 7171 flow, removed 1 selfloop flow, removed 12 redundant places. [2024-06-27 23:50:07,972 INFO L231 Difference]: Finished difference. Result has 576 places, 502 transitions, 6193 flow [2024-06-27 23:50:07,973 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6074, PETRI_DIFFERENCE_MINUEND_PLACES=566, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=501, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=461, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6193, PETRI_PLACES=576, PETRI_TRANSITIONS=502} [2024-06-27 23:50:07,973 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 546 predicate places. [2024-06-27 23:50:07,973 INFO L495 AbstractCegarLoop]: Abstraction has has 576 places, 502 transitions, 6193 flow [2024-06-27 23:50:07,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:50:07,973 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:50:07,973 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:50:07,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable243 [2024-06-27 23:50:07,974 INFO L420 AbstractCegarLoop]: === Iteration 245 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:50:07,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:50:07,974 INFO L85 PathProgramCache]: Analyzing trace with hash -1312259426, now seen corresponding path program 42 times [2024-06-27 23:50:07,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:50:07,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415478646] [2024-06-27 23:50:07,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:50:07,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:50:07,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:50:09,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:50:09,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:50:09,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415478646] [2024-06-27 23:50:09,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415478646] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:50:09,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:50:09,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:50:09,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014727892] [2024-06-27 23:50:09,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:50:09,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:50:09,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:50:09,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:50:09,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:50:09,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:50:09,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 576 places, 502 transitions, 6193 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:50:09,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:50:09,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:50:09,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:50:10,352 INFO L124 PetriNetUnfolderBase]: 1226/2203 cut-off events. [2024-06-27 23:50:10,353 INFO L125 PetriNetUnfolderBase]: For 543397/543397 co-relation queries the response was YES. [2024-06-27 23:50:10,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18179 conditions, 2203 events. 1226/2203 cut-off events. For 543397/543397 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 13731 event pairs, 199 based on Foata normal form. 2/2203 useless extension candidates. Maximal degree in co-relation 17916. Up to 2102 conditions per place. [2024-06-27 23:50:10,393 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 471 selfloop transitions, 45 changer transitions 0/518 dead transitions. [2024-06-27 23:50:10,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 585 places, 518 transitions, 7294 flow [2024-06-27 23:50:10,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:50:10,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:50:10,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-27 23:50:10,395 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4064516129032258 [2024-06-27 23:50:10,395 INFO L175 Difference]: Start difference. First operand has 576 places, 502 transitions, 6193 flow. Second operand 10 states and 126 transitions. [2024-06-27 23:50:10,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 585 places, 518 transitions, 7294 flow [2024-06-27 23:50:14,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 576 places, 518 transitions, 7183 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-27 23:50:14,030 INFO L231 Difference]: Finished difference. Result has 577 places, 503 transitions, 6213 flow [2024-06-27 23:50:14,031 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6082, PETRI_DIFFERENCE_MINUEND_PLACES=567, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=502, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=457, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6213, PETRI_PLACES=577, PETRI_TRANSITIONS=503} [2024-06-27 23:50:14,031 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 547 predicate places. [2024-06-27 23:50:14,031 INFO L495 AbstractCegarLoop]: Abstraction has has 577 places, 503 transitions, 6213 flow [2024-06-27 23:50:14,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:50:14,031 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:50:14,031 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:50:14,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable244 [2024-06-27 23:50:14,032 INFO L420 AbstractCegarLoop]: === Iteration 246 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:50:14,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:50:14,032 INFO L85 PathProgramCache]: Analyzing trace with hash -1478613176, now seen corresponding path program 43 times [2024-06-27 23:50:14,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:50:14,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643514562] [2024-06-27 23:50:14,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:50:14,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:50:14,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:50:15,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:50:15,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:50:15,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643514562] [2024-06-27 23:50:15,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643514562] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:50:15,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:50:15,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:50:15,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139765917] [2024-06-27 23:50:15,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:50:15,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:50:15,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:50:15,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:50:15,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:50:15,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:50:15,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 577 places, 503 transitions, 6213 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:50:15,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:50:15,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:50:15,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:50:16,419 INFO L124 PetriNetUnfolderBase]: 1230/2211 cut-off events. [2024-06-27 23:50:16,419 INFO L125 PetriNetUnfolderBase]: For 543439/543439 co-relation queries the response was YES. [2024-06-27 23:50:16,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18229 conditions, 2211 events. 1230/2211 cut-off events. For 543439/543439 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 13782 event pairs, 180 based on Foata normal form. 2/2211 useless extension candidates. Maximal degree in co-relation 17966. Up to 1971 conditions per place. [2024-06-27 23:50:16,461 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 459 selfloop transitions, 61 changer transitions 0/522 dead transitions. [2024-06-27 23:50:16,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 587 places, 522 transitions, 7728 flow [2024-06-27 23:50:16,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:50:16,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:50:16,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-27 23:50:16,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4046920821114369 [2024-06-27 23:50:16,463 INFO L175 Difference]: Start difference. First operand has 577 places, 503 transitions, 6213 flow. Second operand 11 states and 138 transitions. [2024-06-27 23:50:16,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 587 places, 522 transitions, 7728 flow [2024-06-27 23:50:19,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 578 places, 522 transitions, 7610 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-27 23:50:19,950 INFO L231 Difference]: Finished difference. Result has 579 places, 504 transitions, 6260 flow [2024-06-27 23:50:19,951 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6097, PETRI_DIFFERENCE_MINUEND_PLACES=568, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=443, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6260, PETRI_PLACES=579, PETRI_TRANSITIONS=504} [2024-06-27 23:50:19,951 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 549 predicate places. [2024-06-27 23:50:19,951 INFO L495 AbstractCegarLoop]: Abstraction has has 579 places, 504 transitions, 6260 flow [2024-06-27 23:50:19,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:50:19,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:50:19,951 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:50:19,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable245 [2024-06-27 23:50:19,951 INFO L420 AbstractCegarLoop]: === Iteration 247 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:50:19,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:50:19,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1305943610, now seen corresponding path program 35 times [2024-06-27 23:50:19,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:50:19,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364390612] [2024-06-27 23:50:19,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:50:19,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:50:19,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:50:21,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:50:21,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:50:21,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364390612] [2024-06-27 23:50:21,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364390612] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:50:21,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:50:21,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:50:21,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115276295] [2024-06-27 23:50:21,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:50:21,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:50:21,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:50:21,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:50:21,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:50:21,655 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:50:21,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 579 places, 504 transitions, 6260 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:50:21,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:50:21,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:50:21,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:50:22,624 INFO L124 PetriNetUnfolderBase]: 1236/2221 cut-off events. [2024-06-27 23:50:22,625 INFO L125 PetriNetUnfolderBase]: For 544119/544119 co-relation queries the response was YES. [2024-06-27 23:50:22,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18382 conditions, 2221 events. 1236/2221 cut-off events. For 544119/544119 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 13855 event pairs, 203 based on Foata normal form. 2/2221 useless extension candidates. Maximal degree in co-relation 18118. Up to 2102 conditions per place. [2024-06-27 23:50:22,665 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 468 selfloop transitions, 53 changer transitions 0/523 dead transitions. [2024-06-27 23:50:22,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 589 places, 523 transitions, 7435 flow [2024-06-27 23:50:22,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:50:22,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:50:22,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-27 23:50:22,666 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39882697947214074 [2024-06-27 23:50:22,667 INFO L175 Difference]: Start difference. First operand has 579 places, 504 transitions, 6260 flow. Second operand 11 states and 136 transitions. [2024-06-27 23:50:22,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 589 places, 523 transitions, 7435 flow [2024-06-27 23:50:26,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 578 places, 523 transitions, 7219 flow, removed 16 selfloop flow, removed 11 redundant places. [2024-06-27 23:50:26,208 INFO L231 Difference]: Finished difference. Result has 579 places, 506 transitions, 6232 flow [2024-06-27 23:50:26,209 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6044, PETRI_DIFFERENCE_MINUEND_PLACES=568, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=504, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=451, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6232, PETRI_PLACES=579, PETRI_TRANSITIONS=506} [2024-06-27 23:50:26,209 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 549 predicate places. [2024-06-27 23:50:26,209 INFO L495 AbstractCegarLoop]: Abstraction has has 579 places, 506 transitions, 6232 flow [2024-06-27 23:50:26,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:50:26,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:50:26,209 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:50:26,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable246 [2024-06-27 23:50:26,210 INFO L420 AbstractCegarLoop]: === Iteration 248 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:50:26,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:50:26,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1312264076, now seen corresponding path program 44 times [2024-06-27 23:50:26,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:50:26,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349557825] [2024-06-27 23:50:26,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:50:26,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:50:26,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:50:27,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:50:27,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:50:27,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349557825] [2024-06-27 23:50:27,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349557825] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:50:27,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:50:27,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:50:27,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443808839] [2024-06-27 23:50:27,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:50:27,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:50:27,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:50:27,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:50:27,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:50:27,785 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:50:27,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 579 places, 506 transitions, 6232 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:50:27,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:50:27,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:50:27,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:50:28,587 INFO L124 PetriNetUnfolderBase]: 1240/2229 cut-off events. [2024-06-27 23:50:28,587 INFO L125 PetriNetUnfolderBase]: For 544329/544329 co-relation queries the response was YES. [2024-06-27 23:50:28,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18260 conditions, 2229 events. 1240/2229 cut-off events. For 544329/544329 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 13952 event pairs, 198 based on Foata normal form. 2/2229 useless extension candidates. Maximal degree in co-relation 17997. Up to 2088 conditions per place. [2024-06-27 23:50:28,629 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 471 selfloop transitions, 50 changer transitions 0/523 dead transitions. [2024-06-27 23:50:28,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 589 places, 523 transitions, 7345 flow [2024-06-27 23:50:28,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:50:28,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:50:28,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-27 23:50:28,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39296187683284456 [2024-06-27 23:50:28,631 INFO L175 Difference]: Start difference. First operand has 579 places, 506 transitions, 6232 flow. Second operand 11 states and 134 transitions. [2024-06-27 23:50:28,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 589 places, 523 transitions, 7345 flow [2024-06-27 23:50:32,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 579 places, 523 transitions, 7184 flow, removed 29 selfloop flow, removed 10 redundant places. [2024-06-27 23:50:32,152 INFO L231 Difference]: Finished difference. Result has 580 places, 507 transitions, 6212 flow [2024-06-27 23:50:32,152 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6071, PETRI_DIFFERENCE_MINUEND_PLACES=569, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=506, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=456, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6212, PETRI_PLACES=580, PETRI_TRANSITIONS=507} [2024-06-27 23:50:32,153 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 550 predicate places. [2024-06-27 23:50:32,153 INFO L495 AbstractCegarLoop]: Abstraction has has 580 places, 507 transitions, 6212 flow [2024-06-27 23:50:32,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:50:32,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:50:32,153 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:50:32,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable247 [2024-06-27 23:50:32,153 INFO L420 AbstractCegarLoop]: === Iteration 249 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:50:32,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:50:32,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1478493020, now seen corresponding path program 36 times [2024-06-27 23:50:32,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:50:32,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761282207] [2024-06-27 23:50:32,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:50:32,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:50:32,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:50:33,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:50:33,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:50:33,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761282207] [2024-06-27 23:50:33,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761282207] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:50:33,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:50:33,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:50:33,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090498811] [2024-06-27 23:50:33,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:50:33,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:50:33,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:50:33,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:50:33,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:50:33,881 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:50:33,881 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 580 places, 507 transitions, 6212 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:50:33,881 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:50:33,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:50:33,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:50:34,745 INFO L124 PetriNetUnfolderBase]: 1246/2239 cut-off events. [2024-06-27 23:50:34,746 INFO L125 PetriNetUnfolderBase]: For 544245/544245 co-relation queries the response was YES. [2024-06-27 23:50:34,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18322 conditions, 2239 events. 1246/2239 cut-off events. For 544245/544245 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 14023 event pairs, 195 based on Foata normal form. 2/2239 useless extension candidates. Maximal degree in co-relation 18059. Up to 2059 conditions per place. [2024-06-27 23:50:34,786 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 457 selfloop transitions, 69 changer transitions 0/528 dead transitions. [2024-06-27 23:50:34,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 590 places, 528 transitions, 7813 flow [2024-06-27 23:50:34,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:50:34,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:50:34,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-27 23:50:34,788 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41348973607038125 [2024-06-27 23:50:34,788 INFO L175 Difference]: Start difference. First operand has 580 places, 507 transitions, 6212 flow. Second operand 11 states and 141 transitions. [2024-06-27 23:50:34,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 590 places, 528 transitions, 7813 flow [2024-06-27 23:50:38,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 580 places, 528 transitions, 7685 flow, removed 15 selfloop flow, removed 10 redundant places. [2024-06-27 23:50:38,096 INFO L231 Difference]: Finished difference. Result has 581 places, 509 transitions, 6306 flow [2024-06-27 23:50:38,096 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6086, PETRI_DIFFERENCE_MINUEND_PLACES=570, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=507, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=440, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6306, PETRI_PLACES=581, PETRI_TRANSITIONS=509} [2024-06-27 23:50:38,096 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 551 predicate places. [2024-06-27 23:50:38,096 INFO L495 AbstractCegarLoop]: Abstraction has has 581 places, 509 transitions, 6306 flow [2024-06-27 23:50:38,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:50:38,097 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:50:38,097 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:50:38,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable248 [2024-06-27 23:50:38,097 INFO L420 AbstractCegarLoop]: === Iteration 250 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:50:38,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:50:38,097 INFO L85 PathProgramCache]: Analyzing trace with hash -1449839906, now seen corresponding path program 45 times [2024-06-27 23:50:38,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:50:38,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386559947] [2024-06-27 23:50:38,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:50:38,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:50:38,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:50:39,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:50:39,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:50:39,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386559947] [2024-06-27 23:50:39,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386559947] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:50:39,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:50:39,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:50:39,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396235489] [2024-06-27 23:50:39,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:50:39,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:50:39,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:50:39,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:50:39,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:50:39,691 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:50:39,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 581 places, 509 transitions, 6306 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:50:39,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:50:39,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:50:39,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:50:40,572 INFO L124 PetriNetUnfolderBase]: 1250/2247 cut-off events. [2024-06-27 23:50:40,573 INFO L125 PetriNetUnfolderBase]: For 544977/544977 co-relation queries the response was YES. [2024-06-27 23:50:40,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18409 conditions, 2247 events. 1250/2247 cut-off events. For 544977/544977 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 14103 event pairs, 205 based on Foata normal form. 2/2247 useless extension candidates. Maximal degree in co-relation 18146. Up to 2126 conditions per place. [2024-06-27 23:50:40,608 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 471 selfloop transitions, 52 changer transitions 0/525 dead transitions. [2024-06-27 23:50:40,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 590 places, 525 transitions, 7423 flow [2024-06-27 23:50:40,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:50:40,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:50:40,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-27 23:50:40,610 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4129032258064516 [2024-06-27 23:50:40,610 INFO L175 Difference]: Start difference. First operand has 581 places, 509 transitions, 6306 flow. Second operand 10 states and 128 transitions. [2024-06-27 23:50:40,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 590 places, 525 transitions, 7423 flow [2024-06-27 23:50:43,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 580 places, 525 transitions, 7210 flow, removed 31 selfloop flow, removed 10 redundant places. [2024-06-27 23:50:43,987 INFO L231 Difference]: Finished difference. Result has 581 places, 510 transitions, 6240 flow [2024-06-27 23:50:43,987 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6093, PETRI_DIFFERENCE_MINUEND_PLACES=571, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=509, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=457, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6240, PETRI_PLACES=581, PETRI_TRANSITIONS=510} [2024-06-27 23:50:43,987 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 551 predicate places. [2024-06-27 23:50:43,988 INFO L495 AbstractCegarLoop]: Abstraction has has 581 places, 510 transitions, 6240 flow [2024-06-27 23:50:43,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:50:43,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:50:43,988 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:50:43,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable249 [2024-06-27 23:50:43,988 INFO L420 AbstractCegarLoop]: === Iteration 251 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:50:43,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:50:43,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1311305990, now seen corresponding path program 37 times [2024-06-27 23:50:43,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:50:43,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527208354] [2024-06-27 23:50:43,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:50:43,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:50:44,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:50:45,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:50:45,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:50:45,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527208354] [2024-06-27 23:50:45,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527208354] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:50:45,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:50:45,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:50:45,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655314587] [2024-06-27 23:50:45,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:50:45,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:50:45,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:50:45,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:50:45,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:50:45,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:50:45,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 581 places, 510 transitions, 6240 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:50:45,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:50:45,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:50:45,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:50:46,599 INFO L124 PetriNetUnfolderBase]: 1246/2241 cut-off events. [2024-06-27 23:50:46,599 INFO L125 PetriNetUnfolderBase]: For 503809/503809 co-relation queries the response was YES. [2024-06-27 23:50:46,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17785 conditions, 2241 events. 1246/2241 cut-off events. For 503809/503809 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 14044 event pairs, 205 based on Foata normal form. 2/2241 useless extension candidates. Maximal degree in co-relation 17523. Up to 2096 conditions per place. [2024-06-27 23:50:46,643 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 466 selfloop transitions, 60 changer transitions 0/528 dead transitions. [2024-06-27 23:50:46,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 591 places, 528 transitions, 7367 flow [2024-06-27 23:50:46,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:50:46,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:50:46,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-27 23:50:46,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4046920821114369 [2024-06-27 23:50:46,644 INFO L175 Difference]: Start difference. First operand has 581 places, 510 transitions, 6240 flow. Second operand 11 states and 138 transitions. [2024-06-27 23:50:46,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 591 places, 528 transitions, 7367 flow [2024-06-27 23:50:49,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 582 places, 528 transitions, 7185 flow, removed 40 selfloop flow, removed 9 redundant places. [2024-06-27 23:50:49,678 INFO L231 Difference]: Finished difference. Result has 583 places, 510 transitions, 6186 flow [2024-06-27 23:50:49,678 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6058, PETRI_DIFFERENCE_MINUEND_PLACES=572, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=510, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=450, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6186, PETRI_PLACES=583, PETRI_TRANSITIONS=510} [2024-06-27 23:50:49,678 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 553 predicate places. [2024-06-27 23:50:49,678 INFO L495 AbstractCegarLoop]: Abstraction has has 583 places, 510 transitions, 6186 flow [2024-06-27 23:50:49,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:50:49,678 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:50:49,679 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:50:49,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable250 [2024-06-27 23:50:49,679 INFO L420 AbstractCegarLoop]: === Iteration 252 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:50:49,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:50:49,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1478497856, now seen corresponding path program 46 times [2024-06-27 23:50:49,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:50:49,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920336356] [2024-06-27 23:50:49,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:50:49,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:50:49,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:50:51,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:50:51,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:50:51,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920336356] [2024-06-27 23:50:51,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920336356] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:50:51,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:50:51,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:50:51,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719280299] [2024-06-27 23:50:51,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:50:51,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:50:51,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:50:51,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:50:51,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:50:51,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:50:51,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 583 places, 510 transitions, 6186 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:50:51,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:50:51,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:50:51,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:50:52,327 INFO L124 PetriNetUnfolderBase]: 1243/2236 cut-off events. [2024-06-27 23:50:52,327 INFO L125 PetriNetUnfolderBase]: For 463040/463040 co-relation queries the response was YES. [2024-06-27 23:50:52,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17238 conditions, 2236 events. 1243/2236 cut-off events. For 463040/463040 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 14046 event pairs, 192 based on Foata normal form. 2/2236 useless extension candidates. Maximal degree in co-relation 16975. Up to 2055 conditions per place. [2024-06-27 23:50:52,367 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 461 selfloop transitions, 65 changer transitions 0/528 dead transitions. [2024-06-27 23:50:52,367 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 593 places, 528 transitions, 7293 flow [2024-06-27 23:50:52,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:50:52,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:50:52,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-27 23:50:52,368 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41348973607038125 [2024-06-27 23:50:52,368 INFO L175 Difference]: Start difference. First operand has 583 places, 510 transitions, 6186 flow. Second operand 11 states and 141 transitions. [2024-06-27 23:50:52,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 593 places, 528 transitions, 7293 flow [2024-06-27 23:50:55,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 580 places, 528 transitions, 7009 flow, removed 17 selfloop flow, removed 13 redundant places. [2024-06-27 23:50:55,134 INFO L231 Difference]: Finished difference. Result has 581 places, 510 transitions, 6038 flow [2024-06-27 23:50:55,134 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5902, PETRI_DIFFERENCE_MINUEND_PLACES=570, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=510, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=445, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6038, PETRI_PLACES=581, PETRI_TRANSITIONS=510} [2024-06-27 23:50:55,134 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 551 predicate places. [2024-06-27 23:50:55,135 INFO L495 AbstractCegarLoop]: Abstraction has has 581 places, 510 transitions, 6038 flow [2024-06-27 23:50:55,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:50:55,135 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:50:55,135 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:50:55,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable251 [2024-06-27 23:50:55,135 INFO L420 AbstractCegarLoop]: === Iteration 253 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:50:55,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:50:55,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1765482784, now seen corresponding path program 47 times [2024-06-27 23:50:55,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:50:55,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949959054] [2024-06-27 23:50:55,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:50:55,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:50:55,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:50:56,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:50:56,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:50:56,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949959054] [2024-06-27 23:50:56,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949959054] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:50:56,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:50:56,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:50:56,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260873657] [2024-06-27 23:50:56,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:50:56,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:50:56,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:50:56,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:50:56,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:50:56,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:50:56,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 581 places, 510 transitions, 6038 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:50:56,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:50:56,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:50:56,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:50:57,414 INFO L124 PetriNetUnfolderBase]: 1254/2257 cut-off events. [2024-06-27 23:50:57,415 INFO L125 PetriNetUnfolderBase]: For 503586/503586 co-relation queries the response was YES. [2024-06-27 23:50:57,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17646 conditions, 2257 events. 1254/2257 cut-off events. For 503586/503586 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 14204 event pairs, 162 based on Foata normal form. 2/2257 useless extension candidates. Maximal degree in co-relation 17385. Up to 2013 conditions per place. [2024-06-27 23:50:57,451 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 434 selfloop transitions, 91 changer transitions 0/527 dead transitions. [2024-06-27 23:50:57,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 591 places, 527 transitions, 7608 flow [2024-06-27 23:50:57,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:50:57,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:50:57,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-27 23:50:57,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4222873900293255 [2024-06-27 23:50:57,453 INFO L175 Difference]: Start difference. First operand has 581 places, 510 transitions, 6038 flow. Second operand 11 states and 144 transitions. [2024-06-27 23:50:57,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 591 places, 527 transitions, 7608 flow [2024-06-27 23:51:00,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 580 places, 527 transitions, 7444 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-27 23:51:00,683 INFO L231 Difference]: Finished difference. Result has 581 places, 512 transitions, 6154 flow [2024-06-27 23:51:00,684 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5876, PETRI_DIFFERENCE_MINUEND_PLACES=570, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=510, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=420, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6154, PETRI_PLACES=581, PETRI_TRANSITIONS=512} [2024-06-27 23:51:00,684 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 551 predicate places. [2024-06-27 23:51:00,684 INFO L495 AbstractCegarLoop]: Abstraction has has 581 places, 512 transitions, 6154 flow [2024-06-27 23:51:00,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:51:00,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:51:00,684 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:51:00,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable252 [2024-06-27 23:51:00,684 INFO L420 AbstractCegarLoop]: === Iteration 254 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:51:00,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:51:00,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1765487620, now seen corresponding path program 38 times [2024-06-27 23:51:00,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:51:00,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267239902] [2024-06-27 23:51:00,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:51:00,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:51:00,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:51:02,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:51:02,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:51:02,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267239902] [2024-06-27 23:51:02,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267239902] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:51:02,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:51:02,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:51:02,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303420668] [2024-06-27 23:51:02,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:51:02,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:51:02,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:51:02,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:51:02,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:51:02,373 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:51:02,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 581 places, 512 transitions, 6154 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:51:02,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:51:02,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:51:02,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:51:03,226 INFO L124 PetriNetUnfolderBase]: 1273/2288 cut-off events. [2024-06-27 23:51:03,227 INFO L125 PetriNetUnfolderBase]: For 546090/546090 co-relation queries the response was YES. [2024-06-27 23:51:03,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18526 conditions, 2288 events. 1273/2288 cut-off events. For 546090/546090 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 14421 event pairs, 144 based on Foata normal form. 2/2288 useless extension candidates. Maximal degree in co-relation 18265. Up to 1871 conditions per place. [2024-06-27 23:51:03,268 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 401 selfloop transitions, 136 changer transitions 0/539 dead transitions. [2024-06-27 23:51:03,269 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 591 places, 539 transitions, 7938 flow [2024-06-27 23:51:03,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:51:03,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:51:03,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 156 transitions. [2024-06-27 23:51:03,270 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4574780058651026 [2024-06-27 23:51:03,270 INFO L175 Difference]: Start difference. First operand has 581 places, 512 transitions, 6154 flow. Second operand 11 states and 156 transitions. [2024-06-27 23:51:03,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 591 places, 539 transitions, 7938 flow [2024-06-27 23:51:06,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 584 places, 539 transitions, 7777 flow, removed 32 selfloop flow, removed 7 redundant places. [2024-06-27 23:51:06,458 INFO L231 Difference]: Finished difference. Result has 586 places, 518 transitions, 6487 flow [2024-06-27 23:51:06,459 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5995, PETRI_DIFFERENCE_MINUEND_PLACES=574, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=512, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=379, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6487, PETRI_PLACES=586, PETRI_TRANSITIONS=518} [2024-06-27 23:51:06,460 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 556 predicate places. [2024-06-27 23:51:06,460 INFO L495 AbstractCegarLoop]: Abstraction has has 586 places, 518 transitions, 6487 flow [2024-06-27 23:51:06,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:51:06,460 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:51:06,460 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:51:06,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable253 [2024-06-27 23:51:06,461 INFO L420 AbstractCegarLoop]: === Iteration 255 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:51:06,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:51:06,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1938150304, now seen corresponding path program 48 times [2024-06-27 23:51:06,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:51:06,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544995769] [2024-06-27 23:51:06,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:51:06,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:51:06,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:51:08,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:51:08,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:51:08,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544995769] [2024-06-27 23:51:08,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544995769] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:51:08,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:51:08,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:51:08,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337215795] [2024-06-27 23:51:08,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:51:08,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:51:08,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:51:08,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:51:08,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:51:08,278 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:51:08,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 586 places, 518 transitions, 6487 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:51:08,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:51:08,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:51:08,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:51:09,189 INFO L124 PetriNetUnfolderBase]: 1277/2296 cut-off events. [2024-06-27 23:51:09,189 INFO L125 PetriNetUnfolderBase]: For 546843/546843 co-relation queries the response was YES. [2024-06-27 23:51:09,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18809 conditions, 2296 events. 1277/2296 cut-off events. For 546843/546843 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 14507 event pairs, 165 based on Foata normal form. 2/2296 useless extension candidates. Maximal degree in co-relation 18546. Up to 2100 conditions per place. [2024-06-27 23:51:09,230 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 438 selfloop transitions, 92 changer transitions 0/532 dead transitions. [2024-06-27 23:51:09,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 596 places, 532 transitions, 7623 flow [2024-06-27 23:51:09,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:51:09,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:51:09,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-27 23:51:09,231 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4046920821114369 [2024-06-27 23:51:09,232 INFO L175 Difference]: Start difference. First operand has 586 places, 518 transitions, 6487 flow. Second operand 11 states and 138 transitions. [2024-06-27 23:51:09,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 596 places, 532 transitions, 7623 flow [2024-06-27 23:51:12,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 589 places, 532 transitions, 7378 flow, removed 51 selfloop flow, removed 7 redundant places. [2024-06-27 23:51:12,492 INFO L231 Difference]: Finished difference. Result has 590 places, 519 transitions, 6480 flow [2024-06-27 23:51:12,492 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6242, PETRI_DIFFERENCE_MINUEND_PLACES=579, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=518, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=426, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6480, PETRI_PLACES=590, PETRI_TRANSITIONS=519} [2024-06-27 23:51:12,492 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 560 predicate places. [2024-06-27 23:51:12,492 INFO L495 AbstractCegarLoop]: Abstraction has has 590 places, 519 transitions, 6480 flow [2024-06-27 23:51:12,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:51:12,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:51:12,493 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:51:12,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable254 [2024-06-27 23:51:12,493 INFO L420 AbstractCegarLoop]: === Iteration 256 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:51:12,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:51:12,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1938150490, now seen corresponding path program 39 times [2024-06-27 23:51:12,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:51:12,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595438465] [2024-06-27 23:51:12,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:51:12,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:51:12,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:51:14,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:51:14,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:51:14,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595438465] [2024-06-27 23:51:14,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595438465] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:51:14,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:51:14,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:51:14,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21254528] [2024-06-27 23:51:14,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:51:14,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:51:14,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:51:14,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:51:14,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:51:14,219 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:51:14,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 590 places, 519 transitions, 6480 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:51:14,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:51:14,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:51:14,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:51:15,174 INFO L124 PetriNetUnfolderBase]: 1283/2306 cut-off events. [2024-06-27 23:51:15,174 INFO L125 PetriNetUnfolderBase]: For 545035/545035 co-relation queries the response was YES. [2024-06-27 23:51:15,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18950 conditions, 2306 events. 1283/2306 cut-off events. For 545035/545035 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 14558 event pairs, 146 based on Foata normal form. 2/2306 useless extension candidates. Maximal degree in co-relation 18686. Up to 1897 conditions per place. [2024-06-27 23:51:15,215 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 398 selfloop transitions, 140 changer transitions 0/540 dead transitions. [2024-06-27 23:51:15,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 600 places, 540 transitions, 8141 flow [2024-06-27 23:51:15,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:51:15,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:51:15,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 150 transitions. [2024-06-27 23:51:15,219 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4398826979472141 [2024-06-27 23:51:15,219 INFO L175 Difference]: Start difference. First operand has 590 places, 519 transitions, 6480 flow. Second operand 11 states and 150 transitions. [2024-06-27 23:51:15,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 600 places, 540 transitions, 8141 flow [2024-06-27 23:51:18,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 590 places, 540 transitions, 7913 flow, removed 23 selfloop flow, removed 10 redundant places. [2024-06-27 23:51:18,490 INFO L231 Difference]: Finished difference. Result has 591 places, 521 transitions, 6638 flow [2024-06-27 23:51:18,491 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6254, PETRI_DIFFERENCE_MINUEND_PLACES=580, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=519, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=379, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6638, PETRI_PLACES=591, PETRI_TRANSITIONS=521} [2024-06-27 23:51:18,492 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 561 predicate places. [2024-06-27 23:51:18,492 INFO L495 AbstractCegarLoop]: Abstraction has has 591 places, 521 transitions, 6638 flow [2024-06-27 23:51:18,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:51:18,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:51:18,492 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:51:18,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable255 [2024-06-27 23:51:18,495 INFO L420 AbstractCegarLoop]: === Iteration 257 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:51:18,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:51:18,495 INFO L85 PathProgramCache]: Analyzing trace with hash 1765660414, now seen corresponding path program 49 times [2024-06-27 23:51:18,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:51:18,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305541569] [2024-06-27 23:51:18,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:51:18,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:51:18,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:51:20,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:51:20,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:51:20,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305541569] [2024-06-27 23:51:20,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305541569] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:51:20,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:51:20,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:51:20,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800774267] [2024-06-27 23:51:20,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:51:20,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:51:20,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:51:20,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:51:20,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:51:20,230 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:51:20,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 591 places, 521 transitions, 6638 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:51:20,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:51:20,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:51:20,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:51:21,189 INFO L124 PetriNetUnfolderBase]: 1287/2314 cut-off events. [2024-06-27 23:51:21,190 INFO L125 PetriNetUnfolderBase]: For 545186/545186 co-relation queries the response was YES. [2024-06-27 23:51:21,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19098 conditions, 2314 events. 1287/2314 cut-off events. For 545186/545186 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 14649 event pairs, 167 based on Foata normal form. 2/2314 useless extension candidates. Maximal degree in co-relation 18834. Up to 2118 conditions per place. [2024-06-27 23:51:21,239 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 449 selfloop transitions, 84 changer transitions 0/535 dead transitions. [2024-06-27 23:51:21,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 601 places, 535 transitions, 7760 flow [2024-06-27 23:51:21,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:51:21,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:51:21,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-27 23:51:21,240 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41055718475073316 [2024-06-27 23:51:21,240 INFO L175 Difference]: Start difference. First operand has 591 places, 521 transitions, 6638 flow. Second operand 11 states and 140 transitions. [2024-06-27 23:51:21,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 601 places, 535 transitions, 7760 flow [2024-06-27 23:51:24,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 592 places, 535 transitions, 7402 flow, removed 39 selfloop flow, removed 9 redundant places. [2024-06-27 23:51:24,873 INFO L231 Difference]: Finished difference. Result has 593 places, 522 transitions, 6482 flow [2024-06-27 23:51:24,873 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6280, PETRI_DIFFERENCE_MINUEND_PLACES=582, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=521, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=437, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6482, PETRI_PLACES=593, PETRI_TRANSITIONS=522} [2024-06-27 23:51:24,873 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 563 predicate places. [2024-06-27 23:51:24,874 INFO L495 AbstractCegarLoop]: Abstraction has has 593 places, 522 transitions, 6482 flow [2024-06-27 23:51:24,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:51:24,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:51:24,874 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:51:24,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable256 [2024-06-27 23:51:24,874 INFO L420 AbstractCegarLoop]: === Iteration 258 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:51:24,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:51:24,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1765660600, now seen corresponding path program 40 times [2024-06-27 23:51:24,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:51:24,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860533796] [2024-06-27 23:51:24,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:51:24,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:51:24,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:51:26,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:51:26,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:51:26,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860533796] [2024-06-27 23:51:26,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860533796] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:51:26,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:51:26,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:51:26,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121153076] [2024-06-27 23:51:26,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:51:26,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:51:26,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:51:26,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:51:26,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:51:26,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:51:26,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 593 places, 522 transitions, 6482 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:51:26,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:51:26,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:51:26,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:51:27,616 INFO L124 PetriNetUnfolderBase]: 1283/2308 cut-off events. [2024-06-27 23:51:27,616 INFO L125 PetriNetUnfolderBase]: For 508532/508532 co-relation queries the response was YES. [2024-06-27 23:51:27,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18385 conditions, 2308 events. 1283/2308 cut-off events. For 508532/508532 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 14626 event pairs, 145 based on Foata normal form. 2/2308 useless extension candidates. Maximal degree in co-relation 18120. Up to 1918 conditions per place. [2024-06-27 23:51:27,660 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 412 selfloop transitions, 128 changer transitions 0/542 dead transitions. [2024-06-27 23:51:27,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 603 places, 542 transitions, 7672 flow [2024-06-27 23:51:27,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:51:27,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:51:27,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 153 transitions. [2024-06-27 23:51:27,661 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44868035190615835 [2024-06-27 23:51:27,661 INFO L175 Difference]: Start difference. First operand has 593 places, 522 transitions, 6482 flow. Second operand 11 states and 153 transitions. [2024-06-27 23:51:27,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 603 places, 542 transitions, 7672 flow [2024-06-27 23:51:30,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 593 places, 542 transitions, 7428 flow, removed 33 selfloop flow, removed 10 redundant places. [2024-06-27 23:51:30,935 INFO L231 Difference]: Finished difference. Result has 594 places, 522 transitions, 6502 flow [2024-06-27 23:51:30,936 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6238, PETRI_DIFFERENCE_MINUEND_PLACES=583, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=522, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=394, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6502, PETRI_PLACES=594, PETRI_TRANSITIONS=522} [2024-06-27 23:51:30,936 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 564 predicate places. [2024-06-27 23:51:30,936 INFO L495 AbstractCegarLoop]: Abstraction has has 594 places, 522 transitions, 6502 flow [2024-06-27 23:51:30,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:51:30,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:51:30,936 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:51:30,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable257 [2024-06-27 23:51:30,937 INFO L420 AbstractCegarLoop]: === Iteration 259 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:51:30,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:51:30,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1765487434, now seen corresponding path program 50 times [2024-06-27 23:51:30,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:51:30,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956316732] [2024-06-27 23:51:30,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:51:30,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:51:30,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:51:32,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:51:32,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:51:32,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956316732] [2024-06-27 23:51:32,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956316732] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:51:32,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:51:32,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:51:32,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504515621] [2024-06-27 23:51:32,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:51:32,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:51:32,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:51:32,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:51:32,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:51:32,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:51:32,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 594 places, 522 transitions, 6502 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:51:32,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:51:32,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:51:32,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:51:33,462 INFO L124 PetriNetUnfolderBase]: 1280/2303 cut-off events. [2024-06-27 23:51:33,462 INFO L125 PetriNetUnfolderBase]: For 472836/472836 co-relation queries the response was YES. [2024-06-27 23:51:33,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17978 conditions, 2303 events. 1280/2303 cut-off events. For 472836/472836 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 14583 event pairs, 165 based on Foata normal form. 2/2303 useless extension candidates. Maximal degree in co-relation 17713. Up to 2095 conditions per place. [2024-06-27 23:51:33,502 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 443 selfloop transitions, 90 changer transitions 0/535 dead transitions. [2024-06-27 23:51:33,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 604 places, 535 transitions, 7598 flow [2024-06-27 23:51:33,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:51:33,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:51:33,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-27 23:51:33,504 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41642228739002934 [2024-06-27 23:51:33,504 INFO L175 Difference]: Start difference. First operand has 594 places, 522 transitions, 6502 flow. Second operand 11 states and 142 transitions. [2024-06-27 23:51:33,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 604 places, 535 transitions, 7598 flow [2024-06-27 23:51:36,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 593 places, 535 transitions, 7290 flow, removed 15 selfloop flow, removed 11 redundant places. [2024-06-27 23:51:36,275 INFO L231 Difference]: Finished difference. Result has 594 places, 522 transitions, 6380 flow [2024-06-27 23:51:36,276 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6194, PETRI_DIFFERENCE_MINUEND_PLACES=583, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=522, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=432, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6380, PETRI_PLACES=594, PETRI_TRANSITIONS=522} [2024-06-27 23:51:36,276 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 564 predicate places. [2024-06-27 23:51:36,276 INFO L495 AbstractCegarLoop]: Abstraction has has 594 places, 522 transitions, 6380 flow [2024-06-27 23:51:36,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:51:36,276 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:51:36,276 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:51:36,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable258 [2024-06-27 23:51:36,277 INFO L420 AbstractCegarLoop]: === Iteration 260 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:51:36,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:51:36,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1938157000, now seen corresponding path program 41 times [2024-06-27 23:51:36,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:51:36,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134318676] [2024-06-27 23:51:36,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:51:36,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:51:36,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:51:37,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:51:37,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:51:37,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134318676] [2024-06-27 23:51:37,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134318676] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:51:37,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:51:37,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:51:37,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783609082] [2024-06-27 23:51:37,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:51:37,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:51:37,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:51:37,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:51:37,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:51:37,998 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:51:37,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 594 places, 522 transitions, 6380 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:51:37,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:51:37,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:51:37,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:51:39,021 INFO L124 PetriNetUnfolderBase]: 1286/2313 cut-off events. [2024-06-27 23:51:39,021 INFO L125 PetriNetUnfolderBase]: For 472607/472607 co-relation queries the response was YES. [2024-06-27 23:51:39,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17922 conditions, 2313 events. 1286/2313 cut-off events. For 472607/472607 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 14629 event pairs, 143 based on Foata normal form. 2/2313 useless extension candidates. Maximal degree in co-relation 17657. Up to 1946 conditions per place. [2024-06-27 23:51:39,054 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 412 selfloop transitions, 128 changer transitions 0/542 dead transitions. [2024-06-27 23:51:39,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 604 places, 542 transitions, 7609 flow [2024-06-27 23:51:39,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:51:39,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:51:39,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-27 23:51:39,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4310850439882698 [2024-06-27 23:51:39,056 INFO L175 Difference]: Start difference. First operand has 594 places, 522 transitions, 6380 flow. Second operand 11 states and 147 transitions. [2024-06-27 23:51:39,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 604 places, 542 transitions, 7609 flow [2024-06-27 23:51:42,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 593 places, 542 transitions, 7413 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-27 23:51:42,128 INFO L231 Difference]: Finished difference. Result has 594 places, 524 transitions, 6509 flow [2024-06-27 23:51:42,128 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6184, PETRI_DIFFERENCE_MINUEND_PLACES=583, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=522, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=394, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6509, PETRI_PLACES=594, PETRI_TRANSITIONS=524} [2024-06-27 23:51:42,128 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 564 predicate places. [2024-06-27 23:51:42,128 INFO L495 AbstractCegarLoop]: Abstraction has has 594 places, 524 transitions, 6509 flow [2024-06-27 23:51:42,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:51:42,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:51:42,129 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:51:42,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable259 [2024-06-27 23:51:42,129 INFO L420 AbstractCegarLoop]: === Iteration 261 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:51:42,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:51:42,129 INFO L85 PathProgramCache]: Analyzing trace with hash 1938396568, now seen corresponding path program 7 times [2024-06-27 23:51:42,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:51:42,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368438972] [2024-06-27 23:51:42,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:51:42,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:51:42,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:51:44,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:51:44,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:51:44,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368438972] [2024-06-27 23:51:44,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368438972] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:51:44,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:51:44,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:51:44,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880770850] [2024-06-27 23:51:44,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:51:44,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:51:44,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:51:44,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:51:44,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:51:44,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 23:51:44,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 594 places, 524 transitions, 6509 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:51:44,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:51:44,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 23:51:44,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:51:45,449 INFO L124 PetriNetUnfolderBase]: 1283/2308 cut-off events. [2024-06-27 23:51:45,450 INFO L125 PetriNetUnfolderBase]: For 432942/432942 co-relation queries the response was YES. [2024-06-27 23:51:45,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17595 conditions, 2308 events. 1283/2308 cut-off events. For 432942/432942 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 14653 event pairs, 215 based on Foata normal form. 2/2308 useless extension candidates. Maximal degree in co-relation 17330. Up to 2194 conditions per place. [2024-06-27 23:51:45,485 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 495 selfloop transitions, 44 changer transitions 0/541 dead transitions. [2024-06-27 23:51:45,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 604 places, 541 transitions, 7650 flow [2024-06-27 23:51:45,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:51:45,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:51:45,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-27 23:51:45,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375366568914956 [2024-06-27 23:51:45,487 INFO L175 Difference]: Start difference. First operand has 594 places, 524 transitions, 6509 flow. Second operand 11 states and 128 transitions. [2024-06-27 23:51:45,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 604 places, 541 transitions, 7650 flow [2024-06-27 23:51:48,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 595 places, 541 transitions, 7353 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-27 23:51:48,580 INFO L231 Difference]: Finished difference. Result has 596 places, 524 transitions, 6304 flow [2024-06-27 23:51:48,580 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6212, PETRI_DIFFERENCE_MINUEND_PLACES=585, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=524, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=480, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6304, PETRI_PLACES=596, PETRI_TRANSITIONS=524} [2024-06-27 23:51:48,580 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 566 predicate places. [2024-06-27 23:51:48,580 INFO L495 AbstractCegarLoop]: Abstraction has has 596 places, 524 transitions, 6304 flow [2024-06-27 23:51:48,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:51:48,581 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:51:48,581 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:51:48,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable260 [2024-06-27 23:51:48,581 INFO L420 AbstractCegarLoop]: === Iteration 262 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:51:48,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:51:48,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1938387640, now seen corresponding path program 42 times [2024-06-27 23:51:48,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:51:48,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950357909] [2024-06-27 23:51:48,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:51:48,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:51:48,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:51:50,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:51:50,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:51:50,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950357909] [2024-06-27 23:51:50,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950357909] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:51:50,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:51:50,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:51:50,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575869426] [2024-06-27 23:51:50,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:51:50,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:51:50,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:51:50,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:51:50,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:51:50,591 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:51:50,591 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 596 places, 524 transitions, 6304 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:51:50,591 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:51:50,591 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:51:50,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:51:51,576 INFO L124 PetriNetUnfolderBase]: 1279/2302 cut-off events. [2024-06-27 23:51:51,576 INFO L125 PetriNetUnfolderBase]: For 391587/391587 co-relation queries the response was YES. [2024-06-27 23:51:51,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16865 conditions, 2302 events. 1279/2302 cut-off events. For 391587/391587 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 14633 event pairs, 140 based on Foata normal form. 2/2302 useless extension candidates. Maximal degree in co-relation 16599. Up to 1935 conditions per place. [2024-06-27 23:51:51,618 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 403 selfloop transitions, 135 changer transitions 0/540 dead transitions. [2024-06-27 23:51:51,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 606 places, 540 transitions, 7456 flow [2024-06-27 23:51:51,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:51:51,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:51:51,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-06-27 23:51:51,619 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4252199413489736 [2024-06-27 23:51:51,619 INFO L175 Difference]: Start difference. First operand has 596 places, 524 transitions, 6304 flow. Second operand 11 states and 145 transitions. [2024-06-27 23:51:51,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 606 places, 540 transitions, 7456 flow [2024-06-27 23:51:54,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 596 places, 540 transitions, 7275 flow, removed 28 selfloop flow, removed 10 redundant places. [2024-06-27 23:51:54,183 INFO L231 Difference]: Finished difference. Result has 597 places, 524 transitions, 6402 flow [2024-06-27 23:51:54,183 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6123, PETRI_DIFFERENCE_MINUEND_PLACES=586, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=524, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=389, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6402, PETRI_PLACES=597, PETRI_TRANSITIONS=524} [2024-06-27 23:51:54,183 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 567 predicate places. [2024-06-27 23:51:54,184 INFO L495 AbstractCegarLoop]: Abstraction has has 597 places, 524 transitions, 6402 flow [2024-06-27 23:51:54,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:51:54,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:51:54,184 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:51:54,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable261 [2024-06-27 23:51:54,184 INFO L420 AbstractCegarLoop]: === Iteration 263 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:51:54,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:51:54,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1931894194, now seen corresponding path program 51 times [2024-06-27 23:51:54,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:51:54,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040656754] [2024-06-27 23:51:54,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:51:54,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:51:54,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:51:55,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:51:55,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:51:55,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040656754] [2024-06-27 23:51:55,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040656754] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:51:55,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:51:55,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:51:55,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827056461] [2024-06-27 23:51:55,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:51:55,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:51:55,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:51:55,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:51:55,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:51:55,967 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:51:55,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 597 places, 524 transitions, 6402 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:51:55,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:51:55,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:51:55,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:51:56,919 INFO L124 PetriNetUnfolderBase]: 1283/2310 cut-off events. [2024-06-27 23:51:56,920 INFO L125 PetriNetUnfolderBase]: For 395694/395694 co-relation queries the response was YES. [2024-06-27 23:51:56,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17088 conditions, 2310 events. 1283/2310 cut-off events. For 395694/395694 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 14662 event pairs, 165 based on Foata normal form. 2/2310 useless extension candidates. Maximal degree in co-relation 16821. Up to 2114 conditions per place. [2024-06-27 23:51:56,960 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 449 selfloop transitions, 87 changer transitions 0/538 dead transitions. [2024-06-27 23:51:56,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 607 places, 538 transitions, 7552 flow [2024-06-27 23:51:56,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:51:56,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:51:56,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-27 23:51:56,961 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40762463343108507 [2024-06-27 23:51:56,961 INFO L175 Difference]: Start difference. First operand has 597 places, 524 transitions, 6402 flow. Second operand 11 states and 139 transitions. [2024-06-27 23:51:56,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 607 places, 538 transitions, 7552 flow [2024-06-27 23:51:59,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 596 places, 538 transitions, 7226 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-27 23:51:59,730 INFO L231 Difference]: Finished difference. Result has 597 places, 525 transitions, 6306 flow [2024-06-27 23:51:59,730 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6076, PETRI_DIFFERENCE_MINUEND_PLACES=586, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=524, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=437, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6306, PETRI_PLACES=597, PETRI_TRANSITIONS=525} [2024-06-27 23:51:59,730 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 567 predicate places. [2024-06-27 23:51:59,730 INFO L495 AbstractCegarLoop]: Abstraction has has 597 places, 525 transitions, 6306 flow [2024-06-27 23:51:59,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:51:59,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:51:59,731 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:51:59,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable262 [2024-06-27 23:51:59,731 INFO L420 AbstractCegarLoop]: === Iteration 264 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:51:59,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:51:59,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1760898814, now seen corresponding path program 52 times [2024-06-27 23:51:59,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:51:59,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290102193] [2024-06-27 23:51:59,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:51:59,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:51:59,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:52:01,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:52:01,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:52:01,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290102193] [2024-06-27 23:52:01,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290102193] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:52:01,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:52:01,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:52:01,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596461562] [2024-06-27 23:52:01,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:52:01,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:52:01,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:52:01,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:52:01,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:52:01,379 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:52:01,379 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 597 places, 525 transitions, 6306 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:52:01,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:52:01,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:52:01,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:52:02,213 INFO L124 PetriNetUnfolderBase]: 1287/2318 cut-off events. [2024-06-27 23:52:02,213 INFO L125 PetriNetUnfolderBase]: For 396313/396313 co-relation queries the response was YES. [2024-06-27 23:52:02,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16983 conditions, 2318 events. 1287/2318 cut-off events. For 396313/396313 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 14744 event pairs, 157 based on Foata normal form. 2/2318 useless extension candidates. Maximal degree in co-relation 16716. Up to 1889 conditions per place. [2024-06-27 23:52:02,257 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 413 selfloop transitions, 127 changer transitions 0/542 dead transitions. [2024-06-27 23:52:02,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 607 places, 542 transitions, 7876 flow [2024-06-27 23:52:02,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:52:02,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:52:02,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-06-27 23:52:02,264 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4252199413489736 [2024-06-27 23:52:02,264 INFO L175 Difference]: Start difference. First operand has 597 places, 525 transitions, 6306 flow. Second operand 11 states and 145 transitions. [2024-06-27 23:52:02,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 607 places, 542 transitions, 7876 flow [2024-06-27 23:52:05,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 597 places, 542 transitions, 7656 flow, removed 24 selfloop flow, removed 10 redundant places. [2024-06-27 23:52:05,052 INFO L231 Difference]: Finished difference. Result has 598 places, 526 transitions, 6398 flow [2024-06-27 23:52:05,052 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6088, PETRI_DIFFERENCE_MINUEND_PLACES=587, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=525, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=399, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6398, PETRI_PLACES=598, PETRI_TRANSITIONS=526} [2024-06-27 23:52:05,052 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 568 predicate places. [2024-06-27 23:52:05,053 INFO L495 AbstractCegarLoop]: Abstraction has has 598 places, 526 transitions, 6398 flow [2024-06-27 23:52:05,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:52:05,053 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:52:05,053 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:52:05,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable263 [2024-06-27 23:52:05,053 INFO L420 AbstractCegarLoop]: === Iteration 265 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:52:05,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:52:05,054 INFO L85 PathProgramCache]: Analyzing trace with hash 1761018970, now seen corresponding path program 43 times [2024-06-27 23:52:05,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:52:05,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319706355] [2024-06-27 23:52:05,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:52:05,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:52:05,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:52:06,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:52:06,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:52:06,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319706355] [2024-06-27 23:52:06,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319706355] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:52:06,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:52:06,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:52:06,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543340472] [2024-06-27 23:52:06,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:52:06,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:52:06,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:52:06,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:52:06,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:52:06,777 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:52:06,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 598 places, 526 transitions, 6398 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:52:06,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:52:06,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:52:06,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:52:07,691 INFO L124 PetriNetUnfolderBase]: 1293/2328 cut-off events. [2024-06-27 23:52:07,691 INFO L125 PetriNetUnfolderBase]: For 397339/397339 co-relation queries the response was YES. [2024-06-27 23:52:07,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17201 conditions, 2328 events. 1293/2328 cut-off events. For 397339/397339 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 14820 event pairs, 143 based on Foata normal form. 2/2328 useless extension candidates. Maximal degree in co-relation 16934. Up to 1781 conditions per place. [2024-06-27 23:52:07,726 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 373 selfloop transitions, 174 changer transitions 0/549 dead transitions. [2024-06-27 23:52:07,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 608 places, 549 transitions, 8179 flow [2024-06-27 23:52:07,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:52:07,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:52:07,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 154 transitions. [2024-06-27 23:52:07,727 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45161290322580644 [2024-06-27 23:52:07,727 INFO L175 Difference]: Start difference. First operand has 598 places, 526 transitions, 6398 flow. Second operand 11 states and 154 transitions. [2024-06-27 23:52:07,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 608 places, 549 transitions, 8179 flow Killed by 15