./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi001_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.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/rfi001_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.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/rfi001_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/rfi001_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.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 [2024-06-28 00:00:48,938 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 00:00:49,030 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 00:00:49,034 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 00:00:49,035 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 00:00:49,059 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 00:00:49,061 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 00:00:49,062 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 00:00:49,063 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 00:00:49,067 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 00:00:49,067 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 00:00:49,068 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 00:00:49,069 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 00:00:49,070 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 00:00:49,070 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 00:00:49,071 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 00:00:49,071 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 00:00:49,071 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 00:00:49,072 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 00:00:49,072 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 00:00:49,072 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 00:00:49,073 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 00:00:49,073 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 00:00:49,073 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 00:00:49,073 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 00:00:49,074 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 00:00:49,074 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 00:00:49,074 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 00:00:49,075 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 00:00:49,075 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 00:00:49,076 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 00:00:49,076 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 00:00:49,076 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 00:00:49,077 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 00:00:49,077 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 00:00:49,077 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 00:00:49,077 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 00:00:49,077 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 00:00:49,078 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 00:00:49,078 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 00:00:49,078 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 00:00:49,079 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 00:00:49,079 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 00:00:49,079 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 00:00:49,370 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 00:00:49,400 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 00:00:49,403 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 00:00:49,404 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 00:00:49,405 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 00:00:49,406 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi001_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2024-06-28 00:00:50,734 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 00:00:51,016 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 00:00:51,017 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi001_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2024-06-28 00:00:51,031 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a0064e489/2741cb4bdc1f42948fca79c672e747ea/FLAG71869286f [2024-06-28 00:00:51,063 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a0064e489/2741cb4bdc1f42948fca79c672e747ea [2024-06-28 00:00:51,065 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 00:00:51,066 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 00:00:51,066 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/rfi001_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.yml/witness.yml [2024-06-28 00:00:51,173 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 00:00:51,175 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 00:00:51,178 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 00:00:51,178 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 00:00:51,183 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 00:00:51,184 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 12:00:51" (1/2) ... [2024-06-28 00:00:51,185 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1772547b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:00:51, skipping insertion in model container [2024-06-28 00:00:51,185 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 12:00:51" (1/2) ... [2024-06-28 00:00:51,188 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@145c0c11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:00:51, skipping insertion in model container [2024-06-28 00:00:51,188 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 12:00:51" (2/2) ... [2024-06-28 00:00:51,190 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1772547b and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:00:51, skipping insertion in model container [2024-06-28 00:00:51,190 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 12:00:51" (2/2) ... [2024-06-28 00:00:51,190 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 00:00:51,221 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 00:00:51,222 INFO L97 edCorrectnessWitness]: Location invariant before [L805-L805] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p1_EAX) + (long long )z >= 0LL && (0LL - (long long )__unbuffered_p1_EBX) + (long long )x >= 0LL) && (0LL - (long long )y$r_buff0_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )z >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )weak$$choice2 >= 0LL) && (1LL - (long long )y) + (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )y) + (long long )y$w_buff0 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p1_EBX >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p1_EBX >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p1_EBX) - (long long )x >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$w_buff1_used >= 0LL) && (long long )y$r_buff1_thd2 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff0_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0_used - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff1 - (long long )y$w_buff1_used >= 0LL) [2024-06-28 00:00:51,222 INFO L97 edCorrectnessWitness]: Location invariant before [L806-L806] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p1_EAX) + (long long )z >= 0LL && (0LL - (long long )__unbuffered_p1_EBX) + (long long )x >= 0LL) && (0LL - (long long )y$r_buff0_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )z >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )weak$$choice2 >= 0LL) && (1LL - (long long )y) + (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )y) + (long long )y$w_buff0 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p1_EBX >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p1_EBX >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p1_EBX) - (long long )x >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$w_buff1_used >= 0LL) && (long long )y$r_buff1_thd2 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff0_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0_used - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff1 - (long long )y$w_buff1_used >= 0LL) [2024-06-28 00:00:51,223 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 00:00:51,223 INFO L106 edCorrectnessWitness]: ghost_update [L803-L803] multithreaded = 1; [2024-06-28 00:00:51,262 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 00:00:51,587 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 00:00:51,601 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 00:00:51,780 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 00:00:51,812 INFO L206 MainTranslator]: Completed translation [2024-06-28 00:00:51,812 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:00:51 WrapperNode [2024-06-28 00:00:51,813 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 00:00:51,814 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 00:00:51,814 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 00:00:51,814 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 00:00:51,822 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:00:51" (1/1) ... [2024-06-28 00:00:51,842 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:00:51" (1/1) ... [2024-06-28 00:00:51,894 INFO L138 Inliner]: procedures = 174, calls = 38, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 139 [2024-06-28 00:00:51,898 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 00:00:51,898 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 00:00:51,899 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 00:00:51,899 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 00:00:51,909 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:00:51" (1/1) ... [2024-06-28 00:00:51,909 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:00:51" (1/1) ... [2024-06-28 00:00:51,922 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:00:51" (1/1) ... [2024-06-28 00:00:51,940 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]. [2024-06-28 00:00:51,941 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:00:51" (1/1) ... [2024-06-28 00:00:51,941 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:00:51" (1/1) ... [2024-06-28 00:00:51,949 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:00:51" (1/1) ... [2024-06-28 00:00:51,951 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:00:51" (1/1) ... [2024-06-28 00:00:51,958 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:00:51" (1/1) ... [2024-06-28 00:00:51,960 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:00:51" (1/1) ... [2024-06-28 00:00:51,964 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 00:00:51,965 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 00:00:51,965 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 00:00:51,965 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 00:00:51,966 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:00:51" (1/1) ... [2024-06-28 00:00:51,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 00:00:52,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 00:00:52,089 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) [2024-06-28 00:00:52,120 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 [2024-06-28 00:00:52,157 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 00:00:52,157 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 00:00:52,158 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 00:00:52,158 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 00:00:52,158 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 00:00:52,158 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 00:00:52,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 00:00:52,159 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 00:00:52,159 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 00:00:52,159 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 00:00:52,161 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 00:00:52,325 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 00:00:52,327 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 00:00:52,753 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 00:00:52,753 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 00:00:52,936 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 00:00:52,937 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 00:00:52,940 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 12:00:52 BoogieIcfgContainer [2024-06-28 00:00:52,940 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 00:00:52,944 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 00:00:52,944 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 00:00:52,947 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 00:00:52,947 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 12:00:51" (1/4) ... [2024-06-28 00:00:52,949 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@717ea0d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 12:00:52, skipping insertion in model container [2024-06-28 00:00:52,949 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 12:00:51" (2/4) ... [2024-06-28 00:00:52,950 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@717ea0d6 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 12:00:52, skipping insertion in model container [2024-06-28 00:00:52,950 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:00:51" (3/4) ... [2024-06-28 00:00:52,953 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@717ea0d6 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 12:00:52, skipping insertion in model container [2024-06-28 00:00:52,953 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 12:00:52" (4/4) ... [2024-06-28 00:00:52,955 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi001_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2024-06-28 00:00:52,969 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 00:00:52,971 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-28 00:00:52,971 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 00:00:53,026 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 00:00:53,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 31 transitions, 70 flow [2024-06-28 00:00:53,098 INFO L124 PetriNetUnfolderBase]: 0/29 cut-off events. [2024-06-28 00:00:53,098 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 00:00:53,101 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 41 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. [2024-06-28 00:00:53,101 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 31 transitions, 70 flow [2024-06-28 00:00:53,105 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 23 transitions, 52 flow [2024-06-28 00:00:53,124 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 00:00:53,133 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;@57f0ed76, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 00:00:53,134 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-28 00:00:53,138 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 00:00:53,138 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 00:00:53,139 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 00:00:53,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:00:53,140 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 00:00:53,140 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)] === [2024-06-28 00:00:53,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:00:53,148 INFO L85 PathProgramCache]: Analyzing trace with hash 330507394, now seen corresponding path program 1 times [2024-06-28 00:00:53,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:00:53,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709382589] [2024-06-28 00:00:53,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:00:53,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:00:53,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:00:54,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:00:54,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:00:54,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709382589] [2024-06-28 00:00:54,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709382589] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:00:54,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:00:54,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 00:00:54,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444490912] [2024-06-28 00:00:54,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:00:54,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 00:00:54,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:00:54,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 00:00:54,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 00:00:54,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-28 00:00:54,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 23 transitions, 52 flow. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:00:54,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:00:54,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-28 00:00:54,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:00:54,998 INFO L124 PetriNetUnfolderBase]: 162/316 cut-off events. [2024-06-28 00:00:55,000 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-06-28 00:00:55,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 627 conditions, 316 events. 162/316 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1194 event pairs, 97 based on Foata normal form. 1/303 useless extension candidates. Maximal degree in co-relation 616. Up to 288 conditions per place. [2024-06-28 00:00:55,008 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 21 selfloop transitions, 3 changer transitions 0/29 dead transitions. [2024-06-28 00:00:55,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 29 transitions, 115 flow [2024-06-28 00:00:55,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 00:00:55,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 00:00:55,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 53 transitions. [2024-06-28 00:00:55,022 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5698924731182796 [2024-06-28 00:00:55,024 INFO L175 Difference]: Start difference. First operand has 30 places, 23 transitions, 52 flow. Second operand 3 states and 53 transitions. [2024-06-28 00:00:55,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 29 transitions, 115 flow [2024-06-28 00:00:55,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 29 transitions, 112 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 00:00:55,030 INFO L231 Difference]: Finished difference. Result has 31 places, 25 transitions, 71 flow [2024-06-28 00:00:55,032 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} [2024-06-28 00:00:55,035 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 1 predicate places. [2024-06-28 00:00:55,036 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 25 transitions, 71 flow [2024-06-28 00:00:55,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:00:55,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:00:55,037 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:00:55,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 00:00:55,037 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)] === [2024-06-28 00:00:55,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:00:55,038 INFO L85 PathProgramCache]: Analyzing trace with hash -209632469, now seen corresponding path program 1 times [2024-06-28 00:00:55,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:00:55,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142854235] [2024-06-28 00:00:55,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:00:55,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:00:55,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:00:56,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:00:56,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:00:56,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142854235] [2024-06-28 00:00:56,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142854235] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:00:56,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:00:56,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 00:00:56,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275081736] [2024-06-28 00:00:56,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:00:56,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 00:00:56,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:00:56,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 00:00:56,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 00:00:56,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-28 00:00:56,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 25 transitions, 71 flow. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:00:56,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:00:56,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-28 00:00:56,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:00:56,369 INFO L124 PetriNetUnfolderBase]: 186/348 cut-off events. [2024-06-28 00:00:56,369 INFO L125 PetriNetUnfolderBase]: For 67/67 co-relation queries the response was YES. [2024-06-28 00:00:56,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 790 conditions, 348 events. 186/348 cut-off events. For 67/67 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1260 event pairs, 94 based on Foata normal form. 2/350 useless extension candidates. Maximal degree in co-relation 778. Up to 319 conditions per place. [2024-06-28 00:00:56,373 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 26 selfloop transitions, 5 changer transitions 0/35 dead transitions. [2024-06-28 00:00:56,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 35 transitions, 159 flow [2024-06-28 00:00:56,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 00:00:56,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 00:00:56,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 65 transitions. [2024-06-28 00:00:56,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5241935483870968 [2024-06-28 00:00:56,375 INFO L175 Difference]: Start difference. First operand has 31 places, 25 transitions, 71 flow. Second operand 4 states and 65 transitions. [2024-06-28 00:00:56,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 35 transitions, 159 flow [2024-06-28 00:00:56,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 35 transitions, 156 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 00:00:56,378 INFO L231 Difference]: Finished difference. Result has 34 places, 27 transitions, 95 flow [2024-06-28 00:00:56,378 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} [2024-06-28 00:00:56,379 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 4 predicate places. [2024-06-28 00:00:56,379 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 27 transitions, 95 flow [2024-06-28 00:00:56,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:00:56,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:00:56,379 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:00:56,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 00:00:56,380 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)] === [2024-06-28 00:00:56,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:00:56,381 INFO L85 PathProgramCache]: Analyzing trace with hash 2091328885, now seen corresponding path program 1 times [2024-06-28 00:00:56,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:00:56,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208432325] [2024-06-28 00:00:56,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:00:56,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:00:56,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:00:57,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:00:57,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:00:57,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208432325] [2024-06-28 00:00:57,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208432325] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:00:57,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:00:57,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 00:00:57,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715317220] [2024-06-28 00:00:57,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:00:57,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 00:00:57,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:00:57,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 00:00:57,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 00:00:57,686 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-28 00:00:57,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 27 transitions, 95 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 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) [2024-06-28 00:00:57,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:00:57,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-28 00:00:57,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:00:57,829 INFO L124 PetriNetUnfolderBase]: 180/340 cut-off events. [2024-06-28 00:00:57,829 INFO L125 PetriNetUnfolderBase]: For 195/195 co-relation queries the response was YES. [2024-06-28 00:00:57,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 850 conditions, 340 events. 180/340 cut-off events. For 195/195 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1228 event pairs, 52 based on Foata normal form. 4/344 useless extension candidates. Maximal degree in co-relation 836. Up to 291 conditions per place. [2024-06-28 00:00:57,835 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 31 selfloop transitions, 7 changer transitions 0/42 dead transitions. [2024-06-28 00:00:57,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 42 transitions, 211 flow [2024-06-28 00:00:57,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 00:00:57,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 00:00:57,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 80 transitions. [2024-06-28 00:00:57,841 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5161290322580645 [2024-06-28 00:00:57,841 INFO L175 Difference]: Start difference. First operand has 34 places, 27 transitions, 95 flow. Second operand 5 states and 80 transitions. [2024-06-28 00:00:57,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 42 transitions, 211 flow [2024-06-28 00:00:57,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 42 transitions, 202 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-28 00:00:57,845 INFO L231 Difference]: Finished difference. Result has 37 places, 29 transitions, 119 flow [2024-06-28 00:00:57,846 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=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=119, PETRI_PLACES=37, PETRI_TRANSITIONS=29} [2024-06-28 00:00:57,847 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 7 predicate places. [2024-06-28 00:00:57,847 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 29 transitions, 119 flow [2024-06-28 00:00:57,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 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) [2024-06-28 00:00:57,848 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:00:57,848 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:00:57,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 00:00:57,849 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)] === [2024-06-28 00:00:57,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:00:57,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1135293634, now seen corresponding path program 1 times [2024-06-28 00:00:57,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:00:57,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791659768] [2024-06-28 00:00:57,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:00:57,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:00:57,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:00,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:00,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:00,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791659768] [2024-06-28 00:01:00,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791659768] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:00,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:00,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:01:00,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769123994] [2024-06-28 00:01:00,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:00,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:01:00,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:00,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:01:00,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:01:00,196 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-28 00:01:00,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 29 transitions, 119 flow. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:00,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:00,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-28 00:01:00,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:00,386 INFO L124 PetriNetUnfolderBase]: 176/330 cut-off events. [2024-06-28 00:01:00,387 INFO L125 PetriNetUnfolderBase]: For 314/314 co-relation queries the response was YES. [2024-06-28 00:01:00,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 900 conditions, 330 events. 176/330 cut-off events. For 314/314 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1163 event pairs, 30 based on Foata normal form. 4/334 useless extension candidates. Maximal degree in co-relation 885. Up to 265 conditions per place. [2024-06-28 00:01:00,390 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 31 selfloop transitions, 8 changer transitions 0/43 dead transitions. [2024-06-28 00:01:00,390 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 43 transitions, 225 flow [2024-06-28 00:01:00,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:01:00,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:01:00,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 89 transitions. [2024-06-28 00:01:00,394 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.478494623655914 [2024-06-28 00:01:00,394 INFO L175 Difference]: Start difference. First operand has 37 places, 29 transitions, 119 flow. Second operand 6 states and 89 transitions. [2024-06-28 00:01:00,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 43 transitions, 225 flow [2024-06-28 00:01:00,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 43 transitions, 210 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-28 00:01:00,398 INFO L231 Difference]: Finished difference. Result has 39 places, 28 transitions, 116 flow [2024-06-28 00:01:00,398 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=116, PETRI_PLACES=39, PETRI_TRANSITIONS=28} [2024-06-28 00:01:00,399 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 9 predicate places. [2024-06-28 00:01:00,400 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 28 transitions, 116 flow [2024-06-28 00:01:00,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:00,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:00,400 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:00,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 00:01:00,401 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)] === [2024-06-28 00:01:00,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:00,402 INFO L85 PathProgramCache]: Analyzing trace with hash -1523058016, now seen corresponding path program 1 times [2024-06-28 00:01:00,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:00,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405291411] [2024-06-28 00:01:00,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:00,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:00,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:01,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:01,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:01,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405291411] [2024-06-28 00:01:01,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405291411] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:01,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:01,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 00:01:01,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975325867] [2024-06-28 00:01:01,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:01,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 00:01:01,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:01,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 00:01:01,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-28 00:01:01,427 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:01:01,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 28 transitions, 116 flow. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:01,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:01,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:01:01,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:01,617 INFO L124 PetriNetUnfolderBase]: 174/327 cut-off events. [2024-06-28 00:01:01,617 INFO L125 PetriNetUnfolderBase]: For 479/479 co-relation queries the response was YES. [2024-06-28 00:01:01,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 932 conditions, 327 events. 174/327 cut-off events. For 479/479 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1170 event pairs, 107 based on Foata normal form. 1/325 useless extension candidates. Maximal degree in co-relation 915. Up to 304 conditions per place. [2024-06-28 00:01:01,620 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 25 selfloop transitions, 8 changer transitions 0/36 dead transitions. [2024-06-28 00:01:01,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 36 transitions, 208 flow [2024-06-28 00:01:01,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:01:01,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:01:01,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 66 transitions. [2024-06-28 00:01:01,622 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 00:01:01,622 INFO L175 Difference]: Start difference. First operand has 39 places, 28 transitions, 116 flow. Second operand 6 states and 66 transitions. [2024-06-28 00:01:01,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 36 transitions, 208 flow [2024-06-28 00:01:01,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 36 transitions, 186 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-28 00:01:01,628 INFO L231 Difference]: Finished difference. Result has 42 places, 32 transitions, 140 flow [2024-06-28 00:01:01,628 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=140, PETRI_PLACES=42, PETRI_TRANSITIONS=32} [2024-06-28 00:01:01,630 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 12 predicate places. [2024-06-28 00:01:01,632 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 32 transitions, 140 flow [2024-06-28 00:01:01,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:01,633 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:01,633 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:01,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 00:01:01,638 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)] === [2024-06-28 00:01:01,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:01,639 INFO L85 PathProgramCache]: Analyzing trace with hash -542382381, now seen corresponding path program 1 times [2024-06-28 00:01:01,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:01,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10908644] [2024-06-28 00:01:01,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:01,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:01,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:02,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:02,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:02,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10908644] [2024-06-28 00:01:02,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10908644] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:02,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:02,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:01:02,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963499520] [2024-06-28 00:01:02,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:02,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:01:02,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:02,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:01:02,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:01:02,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:01:02,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 32 transitions, 140 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) [2024-06-28 00:01:02,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:02,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:01:02,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:02,815 INFO L124 PetriNetUnfolderBase]: 181/340 cut-off events. [2024-06-28 00:01:02,815 INFO L125 PetriNetUnfolderBase]: For 629/629 co-relation queries the response was YES. [2024-06-28 00:01:02,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1029 conditions, 340 events. 181/340 cut-off events. For 629/629 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1233 event pairs, 97 based on Foata normal form. 1/337 useless extension candidates. Maximal degree in co-relation 1009. Up to 305 conditions per place. [2024-06-28 00:01:02,819 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 31 selfloop transitions, 12 changer transitions 0/46 dead transitions. [2024-06-28 00:01:02,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 46 transitions, 272 flow [2024-06-28 00:01:02,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:01:02,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:01:02,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 81 transitions. [2024-06-28 00:01:02,821 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37327188940092165 [2024-06-28 00:01:02,822 INFO L175 Difference]: Start difference. First operand has 42 places, 32 transitions, 140 flow. Second operand 7 states and 81 transitions. [2024-06-28 00:01:02,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 46 transitions, 272 flow [2024-06-28 00:01:02,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 46 transitions, 259 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-28 00:01:02,825 INFO L231 Difference]: Finished difference. Result has 47 places, 37 transitions, 189 flow [2024-06-28 00:01:02,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=189, PETRI_PLACES=47, PETRI_TRANSITIONS=37} [2024-06-28 00:01:02,828 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 17 predicate places. [2024-06-28 00:01:02,828 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 37 transitions, 189 flow [2024-06-28 00:01:02,828 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) [2024-06-28 00:01:02,828 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:02,828 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:02,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 00:01:02,829 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)] === [2024-06-28 00:01:02,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:02,829 INFO L85 PathProgramCache]: Analyzing trace with hash 926712741, now seen corresponding path program 2 times [2024-06-28 00:01:02,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:02,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528832946] [2024-06-28 00:01:02,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:02,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:02,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:03,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:03,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:03,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528832946] [2024-06-28 00:01:03,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528832946] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:03,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:03,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:01:03,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475694031] [2024-06-28 00:01:03,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:03,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:01:03,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:03,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:01:03,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:01:03,854 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:01:03,854 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 37 transitions, 189 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) [2024-06-28 00:01:03,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:03,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:01:03,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:04,080 INFO L124 PetriNetUnfolderBase]: 184/345 cut-off events. [2024-06-28 00:01:04,081 INFO L125 PetriNetUnfolderBase]: For 928/928 co-relation queries the response was YES. [2024-06-28 00:01:04,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1146 conditions, 345 events. 184/345 cut-off events. For 928/928 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1253 event pairs, 98 based on Foata normal form. 1/342 useless extension candidates. Maximal degree in co-relation 1124. Up to 310 conditions per place. [2024-06-28 00:01:04,084 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 30 selfloop transitions, 13 changer transitions 0/46 dead transitions. [2024-06-28 00:01:04,084 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 46 transitions, 312 flow [2024-06-28 00:01:04,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:01:04,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:01:04,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 78 transitions. [2024-06-28 00:01:04,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35944700460829493 [2024-06-28 00:01:04,086 INFO L175 Difference]: Start difference. First operand has 47 places, 37 transitions, 189 flow. Second operand 7 states and 78 transitions. [2024-06-28 00:01:04,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 46 transitions, 312 flow [2024-06-28 00:01:04,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 46 transitions, 285 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-28 00:01:04,090 INFO L231 Difference]: Finished difference. Result has 50 places, 40 transitions, 218 flow [2024-06-28 00:01:04,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=218, PETRI_PLACES=50, PETRI_TRANSITIONS=40} [2024-06-28 00:01:04,091 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 20 predicate places. [2024-06-28 00:01:04,091 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 40 transitions, 218 flow [2024-06-28 00:01:04,091 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) [2024-06-28 00:01:04,091 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:04,091 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:04,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 00:01:04,091 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)] === [2024-06-28 00:01:04,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:04,092 INFO L85 PathProgramCache]: Analyzing trace with hash 925132671, now seen corresponding path program 3 times [2024-06-28 00:01:04,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:04,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66012774] [2024-06-28 00:01:04,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:04,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:04,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:05,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:05,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:05,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66012774] [2024-06-28 00:01:05,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66012774] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:05,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:05,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:01:05,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438130173] [2024-06-28 00:01:05,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:05,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:01:05,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:05,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:01:05,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:01:05,284 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:01:05,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 40 transitions, 218 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) [2024-06-28 00:01:05,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:05,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:01:05,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:05,474 INFO L124 PetriNetUnfolderBase]: 182/342 cut-off events. [2024-06-28 00:01:05,474 INFO L125 PetriNetUnfolderBase]: For 1225/1225 co-relation queries the response was YES. [2024-06-28 00:01:05,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1197 conditions, 342 events. 182/342 cut-off events. For 1225/1225 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1239 event pairs, 100 based on Foata normal form. 1/342 useless extension candidates. Maximal degree in co-relation 1174. Up to 298 conditions per place. [2024-06-28 00:01:05,477 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 26 selfloop transitions, 18 changer transitions 0/47 dead transitions. [2024-06-28 00:01:05,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 47 transitions, 334 flow [2024-06-28 00:01:05,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:01:05,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:01:05,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 78 transitions. [2024-06-28 00:01:05,479 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35944700460829493 [2024-06-28 00:01:05,479 INFO L175 Difference]: Start difference. First operand has 50 places, 40 transitions, 218 flow. Second operand 7 states and 78 transitions. [2024-06-28 00:01:05,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 47 transitions, 334 flow [2024-06-28 00:01:05,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 47 transitions, 310 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-28 00:01:05,482 INFO L231 Difference]: Finished difference. Result has 54 places, 42 transitions, 255 flow [2024-06-28 00:01:05,482 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=255, PETRI_PLACES=54, PETRI_TRANSITIONS=42} [2024-06-28 00:01:05,483 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 24 predicate places. [2024-06-28 00:01:05,483 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 42 transitions, 255 flow [2024-06-28 00:01:05,483 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) [2024-06-28 00:01:05,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:05,483 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:05,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 00:01:05,484 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)] === [2024-06-28 00:01:05,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:05,484 INFO L85 PathProgramCache]: Analyzing trace with hash 925140607, now seen corresponding path program 1 times [2024-06-28 00:01:05,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:05,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518563991] [2024-06-28 00:01:05,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:05,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:05,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:06,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:06,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:06,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518563991] [2024-06-28 00:01:06,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518563991] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:06,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:06,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:01:06,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792669268] [2024-06-28 00:01:06,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:06,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:01:06,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:06,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:01:06,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:01:06,867 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:01:06,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 42 transitions, 255 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) [2024-06-28 00:01:06,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:06,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:01:06,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:07,016 INFO L124 PetriNetUnfolderBase]: 182/349 cut-off events. [2024-06-28 00:01:07,016 INFO L125 PetriNetUnfolderBase]: For 1367/1367 co-relation queries the response was YES. [2024-06-28 00:01:07,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1256 conditions, 349 events. 182/349 cut-off events. For 1367/1367 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1252 event pairs, 100 based on Foata normal form. 1/350 useless extension candidates. Maximal degree in co-relation 1231. Up to 313 conditions per place. [2024-06-28 00:01:07,019 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 37 selfloop transitions, 12 changer transitions 0/52 dead transitions. [2024-06-28 00:01:07,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 52 transitions, 384 flow [2024-06-28 00:01:07,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:01:07,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:01:07,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 78 transitions. [2024-06-28 00:01:07,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35944700460829493 [2024-06-28 00:01:07,020 INFO L175 Difference]: Start difference. First operand has 54 places, 42 transitions, 255 flow. Second operand 7 states and 78 transitions. [2024-06-28 00:01:07,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 52 transitions, 384 flow [2024-06-28 00:01:07,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 52 transitions, 338 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-28 00:01:07,024 INFO L231 Difference]: Finished difference. Result has 57 places, 46 transitions, 264 flow [2024-06-28 00:01:07,024 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=264, PETRI_PLACES=57, PETRI_TRANSITIONS=46} [2024-06-28 00:01:07,025 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 27 predicate places. [2024-06-28 00:01:07,025 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 46 transitions, 264 flow [2024-06-28 00:01:07,025 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) [2024-06-28 00:01:07,025 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:07,026 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:07,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 00:01:07,026 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)] === [2024-06-28 00:01:07,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:07,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1399700031, now seen corresponding path program 1 times [2024-06-28 00:01:07,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:07,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740874552] [2024-06-28 00:01:07,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:07,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:07,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:07,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:07,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:07,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740874552] [2024-06-28 00:01:07,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740874552] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:07,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:07,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:01:07,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806287002] [2024-06-28 00:01:07,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:07,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:01:07,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:07,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:01:07,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:01:07,930 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:01:07,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 46 transitions, 264 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) [2024-06-28 00:01:07,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:07,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:01:07,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:08,113 INFO L124 PetriNetUnfolderBase]: 190/361 cut-off events. [2024-06-28 00:01:08,113 INFO L125 PetriNetUnfolderBase]: For 1704/1704 co-relation queries the response was YES. [2024-06-28 00:01:08,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1362 conditions, 361 events. 190/361 cut-off events. For 1704/1704 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1318 event pairs, 47 based on Foata normal form. 1/362 useless extension candidates. Maximal degree in co-relation 1335. Up to 292 conditions per place. [2024-06-28 00:01:08,115 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 44 selfloop transitions, 18 changer transitions 0/66 dead transitions. [2024-06-28 00:01:08,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 66 transitions, 456 flow [2024-06-28 00:01:08,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:01:08,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:01:08,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 88 transitions. [2024-06-28 00:01:08,117 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4055299539170507 [2024-06-28 00:01:08,117 INFO L175 Difference]: Start difference. First operand has 57 places, 46 transitions, 264 flow. Second operand 7 states and 88 transitions. [2024-06-28 00:01:08,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 66 transitions, 456 flow [2024-06-28 00:01:08,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 66 transitions, 433 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-28 00:01:08,121 INFO L231 Difference]: Finished difference. Result has 61 places, 53 transitions, 324 flow [2024-06-28 00:01:08,121 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=324, PETRI_PLACES=61, PETRI_TRANSITIONS=53} [2024-06-28 00:01:08,122 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 31 predicate places. [2024-06-28 00:01:08,122 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 53 transitions, 324 flow [2024-06-28 00:01:08,122 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) [2024-06-28 00:01:08,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:08,123 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:08,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 00:01:08,123 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)] === [2024-06-28 00:01:08,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:08,123 INFO L85 PathProgramCache]: Analyzing trace with hash 906233859, now seen corresponding path program 2 times [2024-06-28 00:01:08,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:08,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928957543] [2024-06-28 00:01:08,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:08,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:08,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:09,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:09,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:09,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928957543] [2024-06-28 00:01:09,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928957543] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:09,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:09,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:01:09,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669021086] [2024-06-28 00:01:09,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:09,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:01:09,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:09,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:01:09,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:01:09,085 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:01:09,086 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 53 transitions, 324 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) [2024-06-28 00:01:09,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:09,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:01:09,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:09,346 INFO L124 PetriNetUnfolderBase]: 198/377 cut-off events. [2024-06-28 00:01:09,347 INFO L125 PetriNetUnfolderBase]: For 2094/2094 co-relation queries the response was YES. [2024-06-28 00:01:09,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1528 conditions, 377 events. 198/377 cut-off events. For 2094/2094 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1409 event pairs, 44 based on Foata normal form. 1/378 useless extension candidates. Maximal degree in co-relation 1500. Up to 301 conditions per place. [2024-06-28 00:01:09,350 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 46 selfloop transitions, 21 changer transitions 0/71 dead transitions. [2024-06-28 00:01:09,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 71 transitions, 538 flow [2024-06-28 00:01:09,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:01:09,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:01:09,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 95 transitions. [2024-06-28 00:01:09,352 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38306451612903225 [2024-06-28 00:01:09,352 INFO L175 Difference]: Start difference. First operand has 61 places, 53 transitions, 324 flow. Second operand 8 states and 95 transitions. [2024-06-28 00:01:09,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 71 transitions, 538 flow [2024-06-28 00:01:09,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 71 transitions, 522 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-06-28 00:01:09,357 INFO L231 Difference]: Finished difference. Result has 70 places, 60 transitions, 425 flow [2024-06-28 00:01:09,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=425, PETRI_PLACES=70, PETRI_TRANSITIONS=60} [2024-06-28 00:01:09,357 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 40 predicate places. [2024-06-28 00:01:09,358 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 60 transitions, 425 flow [2024-06-28 00:01:09,358 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) [2024-06-28 00:01:09,359 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:09,359 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:09,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 00:01:09,359 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)] === [2024-06-28 00:01:09,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:09,360 INFO L85 PathProgramCache]: Analyzing trace with hash 899088669, now seen corresponding path program 3 times [2024-06-28 00:01:09,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:09,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334544446] [2024-06-28 00:01:09,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:09,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:09,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:10,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:10,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:10,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334544446] [2024-06-28 00:01:10,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334544446] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:10,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:10,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:01:10,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511140050] [2024-06-28 00:01:10,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:10,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:01:10,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:10,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:01:10,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:01:10,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:01:10,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 60 transitions, 425 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) [2024-06-28 00:01:10,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:10,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:01:10,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:10,630 INFO L124 PetriNetUnfolderBase]: 206/394 cut-off events. [2024-06-28 00:01:10,630 INFO L125 PetriNetUnfolderBase]: For 2755/2755 co-relation queries the response was YES. [2024-06-28 00:01:10,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1739 conditions, 394 events. 206/394 cut-off events. For 2755/2755 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1516 event pairs, 45 based on Foata normal form. 1/395 useless extension candidates. Maximal degree in co-relation 1706. Up to 295 conditions per place. [2024-06-28 00:01:10,633 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 47 selfloop transitions, 24 changer transitions 0/75 dead transitions. [2024-06-28 00:01:10,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 75 transitions, 655 flow [2024-06-28 00:01:10,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:01:10,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:01:10,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 91 transitions. [2024-06-28 00:01:10,635 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-28 00:01:10,635 INFO L175 Difference]: Start difference. First operand has 70 places, 60 transitions, 425 flow. Second operand 7 states and 91 transitions. [2024-06-28 00:01:10,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 75 transitions, 655 flow [2024-06-28 00:01:10,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 75 transitions, 621 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-28 00:01:10,640 INFO L231 Difference]: Finished difference. Result has 75 places, 64 transitions, 499 flow [2024-06-28 00:01:10,641 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=391, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=499, PETRI_PLACES=75, PETRI_TRANSITIONS=64} [2024-06-28 00:01:10,641 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 45 predicate places. [2024-06-28 00:01:10,641 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 64 transitions, 499 flow [2024-06-28 00:01:10,642 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) [2024-06-28 00:01:10,642 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:10,642 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:10,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 00:01:10,642 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)] === [2024-06-28 00:01:10,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:10,643 INFO L85 PathProgramCache]: Analyzing trace with hash 10495419, now seen corresponding path program 4 times [2024-06-28 00:01:10,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:10,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141655557] [2024-06-28 00:01:10,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:10,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:10,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:11,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:11,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:11,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141655557] [2024-06-28 00:01:11,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141655557] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:11,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:11,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:01:11,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227649075] [2024-06-28 00:01:11,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:11,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:01:11,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:11,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:01:11,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:01:11,586 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:01:11,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 64 transitions, 499 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) [2024-06-28 00:01:11,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:11,587 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:01:11,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:11,862 INFO L124 PetriNetUnfolderBase]: 209/399 cut-off events. [2024-06-28 00:01:11,862 INFO L125 PetriNetUnfolderBase]: For 3480/3488 co-relation queries the response was YES. [2024-06-28 00:01:11,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1878 conditions, 399 events. 209/399 cut-off events. For 3480/3488 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1538 event pairs, 49 based on Foata normal form. 3/402 useless extension candidates. Maximal degree in co-relation 1844. Up to 319 conditions per place. [2024-06-28 00:01:11,866 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 50 selfloop transitions, 22 changer transitions 0/76 dead transitions. [2024-06-28 00:01:11,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 76 transitions, 708 flow [2024-06-28 00:01:11,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:01:11,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:01:11,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 87 transitions. [2024-06-28 00:01:11,867 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4009216589861751 [2024-06-28 00:01:11,868 INFO L175 Difference]: Start difference. First operand has 75 places, 64 transitions, 499 flow. Second operand 7 states and 87 transitions. [2024-06-28 00:01:11,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 76 transitions, 708 flow [2024-06-28 00:01:11,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 76 transitions, 670 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-28 00:01:11,877 INFO L231 Difference]: Finished difference. Result has 80 places, 68 transitions, 564 flow [2024-06-28 00:01:11,877 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=462, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=564, PETRI_PLACES=80, PETRI_TRANSITIONS=68} [2024-06-28 00:01:11,878 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 50 predicate places. [2024-06-28 00:01:11,878 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 68 transitions, 564 flow [2024-06-28 00:01:11,879 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) [2024-06-28 00:01:11,879 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:11,879 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:11,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 00:01:11,879 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)] === [2024-06-28 00:01:11,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:11,880 INFO L85 PathProgramCache]: Analyzing trace with hash 10615389, now seen corresponding path program 5 times [2024-06-28 00:01:11,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:11,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282948843] [2024-06-28 00:01:11,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:11,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:11,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:12,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:12,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:12,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282948843] [2024-06-28 00:01:12,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282948843] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:12,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:12,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:01:12,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830537565] [2024-06-28 00:01:12,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:12,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:01:12,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:12,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:01:12,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:01:13,040 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:01:13,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 68 transitions, 564 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) [2024-06-28 00:01:13,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:13,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:01:13,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:13,355 INFO L124 PetriNetUnfolderBase]: 217/412 cut-off events. [2024-06-28 00:01:13,356 INFO L125 PetriNetUnfolderBase]: For 4102/4110 co-relation queries the response was YES. [2024-06-28 00:01:13,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2067 conditions, 412 events. 217/412 cut-off events. For 4102/4110 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1611 event pairs, 50 based on Foata normal form. 3/415 useless extension candidates. Maximal degree in co-relation 2028. Up to 318 conditions per place. [2024-06-28 00:01:13,360 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 51 selfloop transitions, 25 changer transitions 0/80 dead transitions. [2024-06-28 00:01:13,360 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 80 transitions, 814 flow [2024-06-28 00:01:13,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:01:13,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:01:13,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 96 transitions. [2024-06-28 00:01:13,362 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-28 00:01:13,362 INFO L175 Difference]: Start difference. First operand has 80 places, 68 transitions, 564 flow. Second operand 8 states and 96 transitions. [2024-06-28 00:01:13,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 80 transitions, 814 flow [2024-06-28 00:01:13,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 80 transitions, 768 flow, removed 11 selfloop flow, removed 2 redundant places. [2024-06-28 00:01:13,370 INFO L231 Difference]: Finished difference. Result has 87 places, 72 transitions, 640 flow [2024-06-28 00:01:13,370 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=518, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=640, PETRI_PLACES=87, PETRI_TRANSITIONS=72} [2024-06-28 00:01:13,371 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 57 predicate places. [2024-06-28 00:01:13,371 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 72 transitions, 640 flow [2024-06-28 00:01:13,372 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) [2024-06-28 00:01:13,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:13,372 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:13,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 00:01:13,372 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)] === [2024-06-28 00:01:13,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:13,373 INFO L85 PathProgramCache]: Analyzing trace with hash 333281333, now seen corresponding path program 6 times [2024-06-28 00:01:13,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:13,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255995389] [2024-06-28 00:01:13,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:13,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:13,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:14,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:14,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:14,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255995389] [2024-06-28 00:01:14,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255995389] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:14,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:14,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:01:14,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395490353] [2024-06-28 00:01:14,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:14,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:01:14,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:14,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:01:14,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:01:14,604 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:01:14,604 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 72 transitions, 640 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) [2024-06-28 00:01:14,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:14,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:01:14,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:14,785 INFO L124 PetriNetUnfolderBase]: 225/425 cut-off events. [2024-06-28 00:01:14,785 INFO L125 PetriNetUnfolderBase]: For 5027/5035 co-relation queries the response was YES. [2024-06-28 00:01:14,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2264 conditions, 425 events. 225/425 cut-off events. For 5027/5035 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1682 event pairs, 50 based on Foata normal form. 3/428 useless extension candidates. Maximal degree in co-relation 2221. Up to 308 conditions per place. [2024-06-28 00:01:14,789 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 41 selfloop transitions, 40 changer transitions 0/85 dead transitions. [2024-06-28 00:01:14,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 85 transitions, 932 flow [2024-06-28 00:01:14,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:01:14,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:01:14,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 88 transitions. [2024-06-28 00:01:14,790 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4055299539170507 [2024-06-28 00:01:14,790 INFO L175 Difference]: Start difference. First operand has 87 places, 72 transitions, 640 flow. Second operand 7 states and 88 transitions. [2024-06-28 00:01:14,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 85 transitions, 932 flow [2024-06-28 00:01:14,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 85 transitions, 881 flow, removed 16 selfloop flow, removed 3 redundant places. [2024-06-28 00:01:14,798 INFO L231 Difference]: Finished difference. Result has 92 places, 78 transitions, 799 flow [2024-06-28 00:01:14,799 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=593, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=799, PETRI_PLACES=92, PETRI_TRANSITIONS=78} [2024-06-28 00:01:14,800 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 62 predicate places. [2024-06-28 00:01:14,800 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 78 transitions, 799 flow [2024-06-28 00:01:14,800 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) [2024-06-28 00:01:14,800 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:14,801 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:14,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 00:01:14,801 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)] === [2024-06-28 00:01:14,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:14,801 INFO L85 PathProgramCache]: Analyzing trace with hash -322049008, now seen corresponding path program 1 times [2024-06-28 00:01:14,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:14,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365354181] [2024-06-28 00:01:14,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:14,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:14,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:15,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:15,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:15,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365354181] [2024-06-28 00:01:15,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365354181] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:15,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:15,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:01:15,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069998986] [2024-06-28 00:01:15,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:15,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:01:15,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:15,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:01:15,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:01:15,805 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 00:01:15,805 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 78 transitions, 799 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) [2024-06-28 00:01:15,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:15,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 00:01:15,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:16,002 INFO L124 PetriNetUnfolderBase]: 211/415 cut-off events. [2024-06-28 00:01:16,003 INFO L125 PetriNetUnfolderBase]: For 5747/5753 co-relation queries the response was YES. [2024-06-28 00:01:16,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2362 conditions, 415 events. 211/415 cut-off events. For 5747/5753 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1705 event pairs, 43 based on Foata normal form. 8/422 useless extension candidates. Maximal degree in co-relation 2316. Up to 312 conditions per place. [2024-06-28 00:01:16,007 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 50 selfloop transitions, 30 changer transitions 0/91 dead transitions. [2024-06-28 00:01:16,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 91 transitions, 1039 flow [2024-06-28 00:01:16,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:01:16,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:01:16,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 90 transitions. [2024-06-28 00:01:16,010 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4147465437788018 [2024-06-28 00:01:16,010 INFO L175 Difference]: Start difference. First operand has 92 places, 78 transitions, 799 flow. Second operand 7 states and 90 transitions. [2024-06-28 00:01:16,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 91 transitions, 1039 flow [2024-06-28 00:01:16,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 91 transitions, 956 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-06-28 00:01:16,022 INFO L231 Difference]: Finished difference. Result has 95 places, 82 transitions, 850 flow [2024-06-28 00:01:16,023 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=721, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=850, PETRI_PLACES=95, PETRI_TRANSITIONS=82} [2024-06-28 00:01:16,023 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 65 predicate places. [2024-06-28 00:01:16,024 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 82 transitions, 850 flow [2024-06-28 00:01:16,024 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) [2024-06-28 00:01:16,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:16,024 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:16,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 00:01:16,024 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)] === [2024-06-28 00:01:16,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:16,025 INFO L85 PathProgramCache]: Analyzing trace with hash 865713304, now seen corresponding path program 2 times [2024-06-28 00:01:16,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:16,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287230036] [2024-06-28 00:01:16,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:16,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:16,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:17,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:17,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:17,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287230036] [2024-06-28 00:01:17,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287230036] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:17,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:17,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:01:17,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997396608] [2024-06-28 00:01:17,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:17,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:01:17,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:17,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:01:17,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:01:17,355 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:01:17,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 82 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) [2024-06-28 00:01:17,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:17,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:01:17,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:17,661 INFO L124 PetriNetUnfolderBase]: 240/455 cut-off events. [2024-06-28 00:01:17,661 INFO L125 PetriNetUnfolderBase]: For 6758/6766 co-relation queries the response was YES. [2024-06-28 00:01:17,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2629 conditions, 455 events. 240/455 cut-off events. For 6758/6766 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1873 event pairs, 67 based on Foata normal form. 3/456 useless extension candidates. Maximal degree in co-relation 2582. Up to 358 conditions per place. [2024-06-28 00:01:17,666 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 65 selfloop transitions, 31 changer transitions 0/100 dead transitions. [2024-06-28 00:01:17,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 100 transitions, 1167 flow [2024-06-28 00:01:17,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:01:17,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:01:17,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 96 transitions. [2024-06-28 00:01:17,667 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-28 00:01:17,667 INFO L175 Difference]: Start difference. First operand has 95 places, 82 transitions, 850 flow. Second operand 8 states and 96 transitions. [2024-06-28 00:01:17,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 100 transitions, 1167 flow [2024-06-28 00:01:17,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 100 transitions, 1115 flow, removed 12 selfloop flow, removed 3 redundant places. [2024-06-28 00:01:17,680 INFO L231 Difference]: Finished difference. Result has 100 places, 88 transitions, 973 flow [2024-06-28 00:01:17,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=810, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=973, PETRI_PLACES=100, PETRI_TRANSITIONS=88} [2024-06-28 00:01:17,680 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 70 predicate places. [2024-06-28 00:01:17,681 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 88 transitions, 973 flow [2024-06-28 00:01:17,681 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) [2024-06-28 00:01:17,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:17,681 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:17,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 00:01:17,681 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)] === [2024-06-28 00:01:17,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:17,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1771883120, now seen corresponding path program 3 times [2024-06-28 00:01:17,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:17,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893644239] [2024-06-28 00:01:17,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:17,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:17,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:18,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:18,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:18,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893644239] [2024-06-28 00:01:18,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893644239] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:18,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:18,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:01:18,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626960674] [2024-06-28 00:01:18,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:18,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:01:18,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:18,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:01:18,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:01:18,968 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:01:18,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 88 transitions, 973 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) [2024-06-28 00:01:18,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:18,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:01:18,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:19,297 INFO L124 PetriNetUnfolderBase]: 241/457 cut-off events. [2024-06-28 00:01:19,297 INFO L125 PetriNetUnfolderBase]: For 7043/7047 co-relation queries the response was YES. [2024-06-28 00:01:19,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2679 conditions, 457 events. 241/457 cut-off events. For 7043/7047 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1859 event pairs, 45 based on Foata normal form. 1/458 useless extension candidates. Maximal degree in co-relation 2631. Up to 363 conditions per place. [2024-06-28 00:01:19,302 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 70 selfloop transitions, 27 changer transitions 0/101 dead transitions. [2024-06-28 00:01:19,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 101 transitions, 1225 flow [2024-06-28 00:01:19,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:01:19,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:01:19,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 91 transitions. [2024-06-28 00:01:19,303 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-28 00:01:19,304 INFO L175 Difference]: Start difference. First operand has 100 places, 88 transitions, 973 flow. Second operand 7 states and 91 transitions. [2024-06-28 00:01:19,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 101 transitions, 1225 flow [2024-06-28 00:01:19,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 101 transitions, 1141 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-28 00:01:19,321 INFO L231 Difference]: Finished difference. Result has 101 places, 90 transitions, 984 flow [2024-06-28 00:01:19,321 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=889, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=984, PETRI_PLACES=101, PETRI_TRANSITIONS=90} [2024-06-28 00:01:19,322 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 71 predicate places. [2024-06-28 00:01:19,322 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 90 transitions, 984 flow [2024-06-28 00:01:19,322 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) [2024-06-28 00:01:19,322 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:19,322 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:19,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 00:01:19,323 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)] === [2024-06-28 00:01:19,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:19,323 INFO L85 PathProgramCache]: Analyzing trace with hash -1971370058, now seen corresponding path program 1 times [2024-06-28 00:01:19,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:19,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373084998] [2024-06-28 00:01:19,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:19,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:19,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:20,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:20,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:20,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373084998] [2024-06-28 00:01:20,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373084998] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:20,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:20,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:01:20,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403845529] [2024-06-28 00:01:20,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:20,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:01:20,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:20,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:01:20,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:01:20,513 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:01:20,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 90 transitions, 984 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 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) [2024-06-28 00:01:20,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:20,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:01:20,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:20,750 INFO L124 PetriNetUnfolderBase]: 312/553 cut-off events. [2024-06-28 00:01:20,751 INFO L125 PetriNetUnfolderBase]: For 8382/8382 co-relation queries the response was YES. [2024-06-28 00:01:20,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3170 conditions, 553 events. 312/553 cut-off events. For 8382/8382 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2192 event pairs, 100 based on Foata normal form. 1/554 useless extension candidates. Maximal degree in co-relation 3123. Up to 520 conditions per place. [2024-06-28 00:01:20,756 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 86 selfloop transitions, 17 changer transitions 0/105 dead transitions. [2024-06-28 00:01:20,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 105 transitions, 1242 flow [2024-06-28 00:01:20,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:01:20,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:01:20,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 91 transitions. [2024-06-28 00:01:20,757 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32616487455197135 [2024-06-28 00:01:20,757 INFO L175 Difference]: Start difference. First operand has 101 places, 90 transitions, 984 flow. Second operand 9 states and 91 transitions. [2024-06-28 00:01:20,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 105 transitions, 1242 flow [2024-06-28 00:01:20,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 105 transitions, 1183 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-06-28 00:01:20,772 INFO L231 Difference]: Finished difference. Result has 107 places, 94 transitions, 997 flow [2024-06-28 00:01:20,772 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=925, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=997, PETRI_PLACES=107, PETRI_TRANSITIONS=94} [2024-06-28 00:01:20,773 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 77 predicate places. [2024-06-28 00:01:20,773 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 94 transitions, 997 flow [2024-06-28 00:01:20,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 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) [2024-06-28 00:01:20,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:20,773 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:20,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 00:01:20,774 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)] === [2024-06-28 00:01:20,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:20,774 INFO L85 PathProgramCache]: Analyzing trace with hash 541868910, now seen corresponding path program 4 times [2024-06-28 00:01:20,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:20,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772317822] [2024-06-28 00:01:20,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:20,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:20,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:21,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:21,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:21,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772317822] [2024-06-28 00:01:21,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772317822] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:21,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:21,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:01:21,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177379196] [2024-06-28 00:01:21,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:21,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:01:21,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:21,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:01:21,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:01:21,999 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:01:21,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 94 transitions, 997 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) [2024-06-28 00:01:21,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:21,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:01:21,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:22,317 INFO L124 PetriNetUnfolderBase]: 247/468 cut-off events. [2024-06-28 00:01:22,317 INFO L125 PetriNetUnfolderBase]: For 7965/7965 co-relation queries the response was YES. [2024-06-28 00:01:22,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2787 conditions, 468 events. 247/468 cut-off events. For 7965/7965 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1923 event pairs, 51 based on Foata normal form. 2/470 useless extension candidates. Maximal degree in co-relation 2737. Up to 372 conditions per place. [2024-06-28 00:01:22,322 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 71 selfloop transitions, 28 changer transitions 0/104 dead transitions. [2024-06-28 00:01:22,322 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 104 transitions, 1247 flow [2024-06-28 00:01:22,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:01:22,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:01:22,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 94 transitions. [2024-06-28 00:01:22,324 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3790322580645161 [2024-06-28 00:01:22,324 INFO L175 Difference]: Start difference. First operand has 107 places, 94 transitions, 997 flow. Second operand 8 states and 94 transitions. [2024-06-28 00:01:22,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 104 transitions, 1247 flow [2024-06-28 00:01:22,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 104 transitions, 1204 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-28 00:01:22,339 INFO L231 Difference]: Finished difference. Result has 109 places, 96 transitions, 1053 flow [2024-06-28 00:01:22,340 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=954, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1053, PETRI_PLACES=109, PETRI_TRANSITIONS=96} [2024-06-28 00:01:22,340 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 79 predicate places. [2024-06-28 00:01:22,340 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 96 transitions, 1053 flow [2024-06-28 00:01:22,342 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) [2024-06-28 00:01:22,343 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:22,343 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:22,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 00:01:22,343 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)] === [2024-06-28 00:01:22,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:22,344 INFO L85 PathProgramCache]: Analyzing trace with hash 329084294, now seen corresponding path program 2 times [2024-06-28 00:01:22,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:22,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376032740] [2024-06-28 00:01:22,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:22,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:22,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:23,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:23,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:23,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376032740] [2024-06-28 00:01:23,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376032740] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:23,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:23,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:01:23,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390745957] [2024-06-28 00:01:23,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:23,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:01:23,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:23,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:01:23,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:01:23,598 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:01:23,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 96 transitions, 1053 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 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) [2024-06-28 00:01:23,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:23,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:01:23,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:23,858 INFO L124 PetriNetUnfolderBase]: 317/562 cut-off events. [2024-06-28 00:01:23,859 INFO L125 PetriNetUnfolderBase]: For 9524/9524 co-relation queries the response was YES. [2024-06-28 00:01:23,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3340 conditions, 562 events. 317/562 cut-off events. For 9524/9524 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2249 event pairs, 97 based on Foata normal form. 1/563 useless extension candidates. Maximal degree in co-relation 3289. Up to 529 conditions per place. [2024-06-28 00:01:23,864 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 89 selfloop transitions, 17 changer transitions 0/108 dead transitions. [2024-06-28 00:01:23,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 108 transitions, 1315 flow [2024-06-28 00:01:23,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:01:23,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:01:23,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 83 transitions. [2024-06-28 00:01:23,865 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3346774193548387 [2024-06-28 00:01:23,865 INFO L175 Difference]: Start difference. First operand has 109 places, 96 transitions, 1053 flow. Second operand 8 states and 83 transitions. [2024-06-28 00:01:23,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 108 transitions, 1315 flow [2024-06-28 00:01:23,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 108 transitions, 1241 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-28 00:01:23,912 INFO L231 Difference]: Finished difference. Result has 112 places, 100 transitions, 1057 flow [2024-06-28 00:01:23,912 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=979, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1057, PETRI_PLACES=112, PETRI_TRANSITIONS=100} [2024-06-28 00:01:23,913 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 82 predicate places. [2024-06-28 00:01:23,913 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 100 transitions, 1057 flow [2024-06-28 00:01:23,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 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) [2024-06-28 00:01:23,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:23,913 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:23,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 00:01:23,913 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)] === [2024-06-28 00:01:23,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:23,914 INFO L85 PathProgramCache]: Analyzing trace with hash 545678190, now seen corresponding path program 5 times [2024-06-28 00:01:23,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:23,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780023394] [2024-06-28 00:01:23,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:23,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:23,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:25,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:25,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:25,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780023394] [2024-06-28 00:01:25,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780023394] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:25,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:25,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:01:25,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259872678] [2024-06-28 00:01:25,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:25,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:01:25,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:25,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:01:25,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:01:25,420 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:01:25,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 100 transitions, 1057 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) [2024-06-28 00:01:25,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:25,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:01:25,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:25,702 INFO L124 PetriNetUnfolderBase]: 250/474 cut-off events. [2024-06-28 00:01:25,702 INFO L125 PetriNetUnfolderBase]: For 8876/8884 co-relation queries the response was YES. [2024-06-28 00:01:25,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2898 conditions, 474 events. 250/474 cut-off events. For 8876/8884 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1955 event pairs, 51 based on Foata normal form. 3/477 useless extension candidates. Maximal degree in co-relation 2845. Up to 365 conditions per place. [2024-06-28 00:01:25,707 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 68 selfloop transitions, 33 changer transitions 0/107 dead transitions. [2024-06-28 00:01:25,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 107 transitions, 1277 flow [2024-06-28 00:01:25,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:01:25,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:01:25,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 96 transitions. [2024-06-28 00:01:25,708 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-28 00:01:25,708 INFO L175 Difference]: Start difference. First operand has 112 places, 100 transitions, 1057 flow. Second operand 8 states and 96 transitions. [2024-06-28 00:01:25,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 107 transitions, 1277 flow [2024-06-28 00:01:25,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 107 transitions, 1220 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-28 00:01:25,720 INFO L231 Difference]: Finished difference. Result has 115 places, 100 transitions, 1073 flow [2024-06-28 00:01:25,720 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1000, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1073, PETRI_PLACES=115, PETRI_TRANSITIONS=100} [2024-06-28 00:01:25,720 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 85 predicate places. [2024-06-28 00:01:25,721 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 100 transitions, 1073 flow [2024-06-28 00:01:25,721 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) [2024-06-28 00:01:25,721 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:25,721 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:25,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 00:01:25,721 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)] === [2024-06-28 00:01:25,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:25,722 INFO L85 PathProgramCache]: Analyzing trace with hash -5693346, now seen corresponding path program 6 times [2024-06-28 00:01:25,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:25,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392582343] [2024-06-28 00:01:25,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:25,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:25,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:27,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:27,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:27,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392582343] [2024-06-28 00:01:27,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392582343] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:27,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:27,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:01:27,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786822232] [2024-06-28 00:01:27,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:27,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:01:27,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:27,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:01:27,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:01:27,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:01:27,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 100 transitions, 1073 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) [2024-06-28 00:01:27,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:27,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:01:27,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:27,437 INFO L124 PetriNetUnfolderBase]: 248/472 cut-off events. [2024-06-28 00:01:27,437 INFO L125 PetriNetUnfolderBase]: For 9586/9594 co-relation queries the response was YES. [2024-06-28 00:01:27,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2904 conditions, 472 events. 248/472 cut-off events. For 9586/9594 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1960 event pairs, 57 based on Foata normal form. 9/481 useless extension candidates. Maximal degree in co-relation 2850. Up to 316 conditions per place. [2024-06-28 00:01:27,443 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 48 selfloop transitions, 54 changer transitions 0/108 dead transitions. [2024-06-28 00:01:27,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 108 transitions, 1321 flow [2024-06-28 00:01:27,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:01:27,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:01:27,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 94 transitions. [2024-06-28 00:01:27,445 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3790322580645161 [2024-06-28 00:01:27,445 INFO L175 Difference]: Start difference. First operand has 115 places, 100 transitions, 1073 flow. Second operand 8 states and 94 transitions. [2024-06-28 00:01:27,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 108 transitions, 1321 flow [2024-06-28 00:01:27,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 108 transitions, 1252 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-28 00:01:27,463 INFO L231 Difference]: Finished difference. Result has 117 places, 102 transitions, 1152 flow [2024-06-28 00:01:27,463 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1004, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1152, PETRI_PLACES=117, PETRI_TRANSITIONS=102} [2024-06-28 00:01:27,464 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 87 predicate places. [2024-06-28 00:01:27,464 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 102 transitions, 1152 flow [2024-06-28 00:01:27,464 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) [2024-06-28 00:01:27,464 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:27,464 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:27,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 00:01:27,465 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)] === [2024-06-28 00:01:27,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:27,465 INFO L85 PathProgramCache]: Analyzing trace with hash 689574672, now seen corresponding path program 3 times [2024-06-28 00:01:27,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:27,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655117101] [2024-06-28 00:01:27,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:27,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:27,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:28,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:28,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:28,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655117101] [2024-06-28 00:01:28,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655117101] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:28,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:28,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:01:28,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731581868] [2024-06-28 00:01:28,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:28,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:01:28,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:28,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:01:28,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:01:28,678 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:01:28,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 102 transitions, 1152 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 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) [2024-06-28 00:01:28,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:28,679 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:01:28,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:28,857 INFO L124 PetriNetUnfolderBase]: 315/560 cut-off events. [2024-06-28 00:01:28,857 INFO L125 PetriNetUnfolderBase]: For 11136/11136 co-relation queries the response was YES. [2024-06-28 00:01:28,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3472 conditions, 560 events. 315/560 cut-off events. For 11136/11136 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2241 event pairs, 96 based on Foata normal form. 1/561 useless extension candidates. Maximal degree in co-relation 3417. Up to 491 conditions per place. [2024-06-28 00:01:28,864 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 87 selfloop transitions, 30 changer transitions 0/119 dead transitions. [2024-06-28 00:01:28,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 119 transitions, 1523 flow [2024-06-28 00:01:28,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:01:28,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:01:28,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 88 transitions. [2024-06-28 00:01:28,865 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 00:01:28,865 INFO L175 Difference]: Start difference. First operand has 117 places, 102 transitions, 1152 flow. Second operand 8 states and 88 transitions. [2024-06-28 00:01:28,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 119 transitions, 1523 flow [2024-06-28 00:01:28,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 119 transitions, 1392 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-28 00:01:28,882 INFO L231 Difference]: Finished difference. Result has 122 places, 111 transitions, 1194 flow [2024-06-28 00:01:28,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1024, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1194, PETRI_PLACES=122, PETRI_TRANSITIONS=111} [2024-06-28 00:01:28,883 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 92 predicate places. [2024-06-28 00:01:28,883 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 111 transitions, 1194 flow [2024-06-28 00:01:28,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 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) [2024-06-28 00:01:28,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:28,884 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:28,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 00:01:28,884 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)] === [2024-06-28 00:01:28,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:28,885 INFO L85 PathProgramCache]: Analyzing trace with hash -5485584, now seen corresponding path program 4 times [2024-06-28 00:01:28,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:28,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342785536] [2024-06-28 00:01:28,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:28,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:28,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:30,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:30,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:30,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342785536] [2024-06-28 00:01:30,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342785536] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:30,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:30,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:01:30,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134170147] [2024-06-28 00:01:30,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:30,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:01:30,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:30,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:01:30,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:01:30,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:01:30,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 111 transitions, 1194 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 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) [2024-06-28 00:01:30,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:30,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:01:30,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:30,370 INFO L124 PetriNetUnfolderBase]: 318/565 cut-off events. [2024-06-28 00:01:30,370 INFO L125 PetriNetUnfolderBase]: For 11728/11728 co-relation queries the response was YES. [2024-06-28 00:01:30,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3558 conditions, 565 events. 318/565 cut-off events. For 11728/11728 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2253 event pairs, 92 based on Foata normal form. 1/566 useless extension candidates. Maximal degree in co-relation 3499. Up to 495 conditions per place. [2024-06-28 00:01:30,378 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 85 selfloop transitions, 35 changer transitions 0/122 dead transitions. [2024-06-28 00:01:30,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 122 transitions, 1537 flow [2024-06-28 00:01:30,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:01:30,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:01:30,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 87 transitions. [2024-06-28 00:01:30,379 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35080645161290325 [2024-06-28 00:01:30,380 INFO L175 Difference]: Start difference. First operand has 122 places, 111 transitions, 1194 flow. Second operand 8 states and 87 transitions. [2024-06-28 00:01:30,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 122 transitions, 1537 flow [2024-06-28 00:01:30,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 122 transitions, 1502 flow, removed 11 selfloop flow, removed 2 redundant places. [2024-06-28 00:01:30,402 INFO L231 Difference]: Finished difference. Result has 128 places, 114 transitions, 1271 flow [2024-06-28 00:01:30,402 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1159, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1271, PETRI_PLACES=128, PETRI_TRANSITIONS=114} [2024-06-28 00:01:30,403 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 98 predicate places. [2024-06-28 00:01:30,403 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 114 transitions, 1271 flow [2024-06-28 00:01:30,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 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) [2024-06-28 00:01:30,403 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:30,403 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:30,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 00:01:30,404 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)] === [2024-06-28 00:01:30,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:30,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1931166, now seen corresponding path program 5 times [2024-06-28 00:01:30,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:30,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267429207] [2024-06-28 00:01:30,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:30,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:30,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:31,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:31,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:31,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267429207] [2024-06-28 00:01:31,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267429207] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:31,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:31,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:01:31,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979960487] [2024-06-28 00:01:31,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:31,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:01:31,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:31,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:01:31,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:01:31,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:01:31,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 114 transitions, 1271 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 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) [2024-06-28 00:01:31,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:31,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:01:31,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:31,874 INFO L124 PetriNetUnfolderBase]: 316/562 cut-off events. [2024-06-28 00:01:31,875 INFO L125 PetriNetUnfolderBase]: For 12208/12208 co-relation queries the response was YES. [2024-06-28 00:01:31,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3595 conditions, 562 events. 316/562 cut-off events. For 12208/12208 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2253 event pairs, 94 based on Foata normal form. 1/563 useless extension candidates. Maximal degree in co-relation 3534. Up to 493 conditions per place. [2024-06-28 00:01:31,881 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 81 selfloop transitions, 38 changer transitions 0/121 dead transitions. [2024-06-28 00:01:31,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 121 transitions, 1525 flow [2024-06-28 00:01:31,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:01:31,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:01:31,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 85 transitions. [2024-06-28 00:01:31,884 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34274193548387094 [2024-06-28 00:01:31,885 INFO L175 Difference]: Start difference. First operand has 128 places, 114 transitions, 1271 flow. Second operand 8 states and 85 transitions. [2024-06-28 00:01:31,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 121 transitions, 1525 flow [2024-06-28 00:01:31,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 121 transitions, 1455 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-28 00:01:31,901 INFO L231 Difference]: Finished difference. Result has 132 places, 114 transitions, 1282 flow [2024-06-28 00:01:31,901 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1201, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1282, PETRI_PLACES=132, PETRI_TRANSITIONS=114} [2024-06-28 00:01:31,901 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 102 predicate places. [2024-06-28 00:01:31,901 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 114 transitions, 1282 flow [2024-06-28 00:01:31,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 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) [2024-06-28 00:01:31,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:31,902 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:31,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 00:01:31,902 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)] === [2024-06-28 00:01:31,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:31,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1749422446, now seen corresponding path program 1 times [2024-06-28 00:01:31,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:31,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197476825] [2024-06-28 00:01:31,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:31,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:31,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:33,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:33,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:33,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197476825] [2024-06-28 00:01:33,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197476825] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:33,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:33,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:01:33,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166678719] [2024-06-28 00:01:33,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:33,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:01:33,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:33,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:01:33,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:01:33,556 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:01:33,557 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 114 transitions, 1282 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:33,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:33,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:01:33,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:33,771 INFO L124 PetriNetUnfolderBase]: 314/559 cut-off events. [2024-06-28 00:01:33,771 INFO L125 PetriNetUnfolderBase]: For 12612/12612 co-relation queries the response was YES. [2024-06-28 00:01:33,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3585 conditions, 559 events. 314/559 cut-off events. For 12612/12612 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2257 event pairs, 111 based on Foata normal form. 1/560 useless extension candidates. Maximal degree in co-relation 3524. Up to 531 conditions per place. [2024-06-28 00:01:33,778 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 106 selfloop transitions, 16 changer transitions 0/124 dead transitions. [2024-06-28 00:01:33,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 124 transitions, 1554 flow [2024-06-28 00:01:33,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:01:33,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:01:33,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 93 transitions. [2024-06-28 00:01:33,779 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3 [2024-06-28 00:01:33,780 INFO L175 Difference]: Start difference. First operand has 132 places, 114 transitions, 1282 flow. Second operand 10 states and 93 transitions. [2024-06-28 00:01:33,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 124 transitions, 1554 flow [2024-06-28 00:01:33,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 124 transitions, 1507 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-06-28 00:01:33,803 INFO L231 Difference]: Finished difference. Result has 138 places, 116 transitions, 1286 flow [2024-06-28 00:01:33,803 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1235, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1286, PETRI_PLACES=138, PETRI_TRANSITIONS=116} [2024-06-28 00:01:33,803 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 108 predicate places. [2024-06-28 00:01:33,804 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 116 transitions, 1286 flow [2024-06-28 00:01:33,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:33,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:33,804 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:33,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 00:01:33,804 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)] === [2024-06-28 00:01:33,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:33,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1387546912, now seen corresponding path program 1 times [2024-06-28 00:01:33,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:33,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721774206] [2024-06-28 00:01:33,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:33,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:33,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:34,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:34,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:34,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721774206] [2024-06-28 00:01:34,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721774206] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:34,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:34,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:01:34,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179257280] [2024-06-28 00:01:34,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:34,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:01:34,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:34,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:01:34,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:01:34,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-28 00:01:34,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 116 transitions, 1286 flow. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 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) [2024-06-28 00:01:34,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:34,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-28 00:01:34,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:34,837 INFO L124 PetriNetUnfolderBase]: 230/479 cut-off events. [2024-06-28 00:01:34,837 INFO L125 PetriNetUnfolderBase]: For 12715/12725 co-relation queries the response was YES. [2024-06-28 00:01:34,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3061 conditions, 479 events. 230/479 cut-off events. For 12715/12725 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2238 event pairs, 20 based on Foata normal form. 6/484 useless extension candidates. Maximal degree in co-relation 2999. Up to 252 conditions per place. [2024-06-28 00:01:34,846 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 56 selfloop transitions, 31 changer transitions 0/128 dead transitions. [2024-06-28 00:01:34,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 128 transitions, 1512 flow [2024-06-28 00:01:34,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:01:34,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:01:34,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 98 transitions. [2024-06-28 00:01:34,849 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45161290322580644 [2024-06-28 00:01:34,849 INFO L175 Difference]: Start difference. First operand has 138 places, 116 transitions, 1286 flow. Second operand 7 states and 98 transitions. [2024-06-28 00:01:34,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 128 transitions, 1512 flow [2024-06-28 00:01:34,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 128 transitions, 1412 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-28 00:01:34,869 INFO L231 Difference]: Finished difference. Result has 134 places, 118 transitions, 1294 flow [2024-06-28 00:01:34,870 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1186, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1294, PETRI_PLACES=134, PETRI_TRANSITIONS=118} [2024-06-28 00:01:34,870 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 104 predicate places. [2024-06-28 00:01:34,870 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 118 transitions, 1294 flow [2024-06-28 00:01:34,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 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) [2024-06-28 00:01:34,871 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:34,871 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:34,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 00:01:34,871 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)] === [2024-06-28 00:01:34,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:34,872 INFO L85 PathProgramCache]: Analyzing trace with hash 842923282, now seen corresponding path program 2 times [2024-06-28 00:01:34,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:34,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931967034] [2024-06-28 00:01:34,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:34,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:34,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:36,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:36,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:36,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931967034] [2024-06-28 00:01:36,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931967034] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:36,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:36,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:01:36,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400772140] [2024-06-28 00:01:36,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:36,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:01:36,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:36,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:01:36,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:01:36,175 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:01:36,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 118 transitions, 1294 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) [2024-06-28 00:01:36,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:36,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:01:36,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:36,440 INFO L124 PetriNetUnfolderBase]: 297/571 cut-off events. [2024-06-28 00:01:36,440 INFO L125 PetriNetUnfolderBase]: For 16215/16221 co-relation queries the response was YES. [2024-06-28 00:01:36,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3746 conditions, 571 events. 297/571 cut-off events. For 16215/16221 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2615 event pairs, 69 based on Foata normal form. 3/569 useless extension candidates. Maximal degree in co-relation 3684. Up to 439 conditions per place. [2024-06-28 00:01:36,448 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 103 selfloop transitions, 28 changer transitions 0/138 dead transitions. [2024-06-28 00:01:36,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 138 transitions, 1664 flow [2024-06-28 00:01:36,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:01:36,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:01:36,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-28 00:01:36,450 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3763440860215054 [2024-06-28 00:01:36,450 INFO L175 Difference]: Start difference. First operand has 134 places, 118 transitions, 1294 flow. Second operand 9 states and 105 transitions. [2024-06-28 00:01:36,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 138 transitions, 1664 flow [2024-06-28 00:01:36,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 138 transitions, 1606 flow, removed 15 selfloop flow, removed 4 redundant places. [2024-06-28 00:01:36,479 INFO L231 Difference]: Finished difference. Result has 140 places, 122 transitions, 1376 flow [2024-06-28 00:01:36,479 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1252, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1376, PETRI_PLACES=140, PETRI_TRANSITIONS=122} [2024-06-28 00:01:36,480 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 110 predicate places. [2024-06-28 00:01:36,481 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 122 transitions, 1376 flow [2024-06-28 00:01:36,481 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) [2024-06-28 00:01:36,481 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:36,481 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:36,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 00:01:36,481 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)] === [2024-06-28 00:01:36,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:36,482 INFO L85 PathProgramCache]: Analyzing trace with hash 988921192, now seen corresponding path program 3 times [2024-06-28 00:01:36,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:36,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013204246] [2024-06-28 00:01:36,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:36,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:36,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:37,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:37,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:37,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013204246] [2024-06-28 00:01:37,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013204246] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:37,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:37,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:01:37,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725616449] [2024-06-28 00:01:37,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:37,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:01:37,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:37,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:01:37,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:01:37,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:01:37,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 122 transitions, 1376 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) [2024-06-28 00:01:37,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:37,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:01:37,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:38,164 INFO L124 PetriNetUnfolderBase]: 298/581 cut-off events. [2024-06-28 00:01:38,164 INFO L125 PetriNetUnfolderBase]: For 16401/16409 co-relation queries the response was YES. [2024-06-28 00:01:38,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3758 conditions, 581 events. 298/581 cut-off events. For 16401/16409 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 2726 event pairs, 75 based on Foata normal form. 4/583 useless extension candidates. Maximal degree in co-relation 3695. Up to 452 conditions per place. [2024-06-28 00:01:38,169 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 99 selfloop transitions, 32 changer transitions 0/138 dead transitions. [2024-06-28 00:01:38,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 138 transitions, 1716 flow [2024-06-28 00:01:38,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:01:38,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:01:38,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 99 transitions. [2024-06-28 00:01:38,170 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39919354838709675 [2024-06-28 00:01:38,170 INFO L175 Difference]: Start difference. First operand has 140 places, 122 transitions, 1376 flow. Second operand 8 states and 99 transitions. [2024-06-28 00:01:38,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 138 transitions, 1716 flow [2024-06-28 00:01:38,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 138 transitions, 1638 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-28 00:01:38,191 INFO L231 Difference]: Finished difference. Result has 142 places, 124 transitions, 1415 flow [2024-06-28 00:01:38,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1298, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1415, PETRI_PLACES=142, PETRI_TRANSITIONS=124} [2024-06-28 00:01:38,191 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 112 predicate places. [2024-06-28 00:01:38,192 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 124 transitions, 1415 flow [2024-06-28 00:01:38,192 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) [2024-06-28 00:01:38,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:38,192 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:38,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 00:01:38,192 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)] === [2024-06-28 00:01:38,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:38,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1075772342, now seen corresponding path program 1 times [2024-06-28 00:01:38,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:38,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143079352] [2024-06-28 00:01:38,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:38,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:38,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:39,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:39,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:39,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143079352] [2024-06-28 00:01:39,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143079352] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:39,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:39,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:01:39,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130969258] [2024-06-28 00:01:39,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:39,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:01:39,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:39,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:01:39,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:01:39,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:01:39,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 124 transitions, 1415 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:39,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:39,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:01:39,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:39,695 INFO L124 PetriNetUnfolderBase]: 372/679 cut-off events. [2024-06-28 00:01:39,696 INFO L125 PetriNetUnfolderBase]: For 17602/17602 co-relation queries the response was YES. [2024-06-28 00:01:39,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4278 conditions, 679 events. 372/679 cut-off events. For 17602/17602 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3063 event pairs, 81 based on Foata normal form. 1/680 useless extension candidates. Maximal degree in co-relation 4215. Up to 607 conditions per place. [2024-06-28 00:01:39,712 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 107 selfloop transitions, 33 changer transitions 0/142 dead transitions. [2024-06-28 00:01:39,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 142 transitions, 1770 flow [2024-06-28 00:01:39,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:01:39,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:01:39,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 103 transitions. [2024-06-28 00:01:39,714 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33225806451612905 [2024-06-28 00:01:39,714 INFO L175 Difference]: Start difference. First operand has 142 places, 124 transitions, 1415 flow. Second operand 10 states and 103 transitions. [2024-06-28 00:01:39,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 142 transitions, 1770 flow [2024-06-28 00:01:39,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 142 transitions, 1677 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-28 00:01:39,741 INFO L231 Difference]: Finished difference. Result has 147 places, 128 transitions, 1441 flow [2024-06-28 00:01:39,741 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1322, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1441, PETRI_PLACES=147, PETRI_TRANSITIONS=128} [2024-06-28 00:01:39,741 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 117 predicate places. [2024-06-28 00:01:39,742 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 128 transitions, 1441 flow [2024-06-28 00:01:39,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:39,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:39,742 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:39,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 00:01:39,742 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)] === [2024-06-28 00:01:39,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:39,742 INFO L85 PathProgramCache]: Analyzing trace with hash 234553584, now seen corresponding path program 4 times [2024-06-28 00:01:39,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:39,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908016138] [2024-06-28 00:01:39,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:39,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:39,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:40,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:40,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:40,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908016138] [2024-06-28 00:01:40,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908016138] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:40,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:40,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:01:40,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253558658] [2024-06-28 00:01:40,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:40,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:01:40,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:40,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:01:40,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:01:41,018 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:01:41,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 128 transitions, 1441 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) [2024-06-28 00:01:41,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:41,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:01:41,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:41,345 INFO L124 PetriNetUnfolderBase]: 326/633 cut-off events. [2024-06-28 00:01:41,345 INFO L125 PetriNetUnfolderBase]: For 19076/19076 co-relation queries the response was YES. [2024-06-28 00:01:41,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4170 conditions, 633 events. 326/633 cut-off events. For 19076/19076 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3036 event pairs, 49 based on Foata normal form. 2/633 useless extension candidates. Maximal degree in co-relation 4104. Up to 510 conditions per place. [2024-06-28 00:01:41,350 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 112 selfloop transitions, 25 changer transitions 0/145 dead transitions. [2024-06-28 00:01:41,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 145 transitions, 1792 flow [2024-06-28 00:01:41,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:01:41,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:01:41,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-28 00:01:41,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37992831541218636 [2024-06-28 00:01:41,352 INFO L175 Difference]: Start difference. First operand has 147 places, 128 transitions, 1441 flow. Second operand 9 states and 106 transitions. [2024-06-28 00:01:41,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 145 transitions, 1792 flow [2024-06-28 00:01:41,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 145 transitions, 1705 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-28 00:01:41,377 INFO L231 Difference]: Finished difference. Result has 150 places, 130 transitions, 1451 flow [2024-06-28 00:01:41,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1354, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1451, PETRI_PLACES=150, PETRI_TRANSITIONS=130} [2024-06-28 00:01:41,378 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 120 predicate places. [2024-06-28 00:01:41,378 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 130 transitions, 1451 flow [2024-06-28 00:01:41,378 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) [2024-06-28 00:01:41,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:41,378 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:41,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 00:01:41,379 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)] === [2024-06-28 00:01:41,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:41,379 INFO L85 PathProgramCache]: Analyzing trace with hash 617737820, now seen corresponding path program 5 times [2024-06-28 00:01:41,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:41,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140556543] [2024-06-28 00:01:41,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:41,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:41,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:42,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:42,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:42,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140556543] [2024-06-28 00:01:42,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140556543] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:42,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:42,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:01:42,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033754789] [2024-06-28 00:01:42,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:42,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:01:42,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:42,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:01:42,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:01:42,873 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:01:42,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 130 transitions, 1451 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) [2024-06-28 00:01:42,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:42,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:01:42,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:43,223 INFO L124 PetriNetUnfolderBase]: 327/640 cut-off events. [2024-06-28 00:01:43,223 INFO L125 PetriNetUnfolderBase]: For 19504/19504 co-relation queries the response was YES. [2024-06-28 00:01:43,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4150 conditions, 640 events. 327/640 cut-off events. For 19504/19504 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3111 event pairs, 52 based on Foata normal form. 2/640 useless extension candidates. Maximal degree in co-relation 4082. Up to 510 conditions per place. [2024-06-28 00:01:43,229 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 107 selfloop transitions, 30 changer transitions 0/145 dead transitions. [2024-06-28 00:01:43,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 145 transitions, 1807 flow [2024-06-28 00:01:43,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:01:43,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:01:43,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-28 00:01:43,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37992831541218636 [2024-06-28 00:01:43,230 INFO L175 Difference]: Start difference. First operand has 150 places, 130 transitions, 1451 flow. Second operand 9 states and 106 transitions. [2024-06-28 00:01:43,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 145 transitions, 1807 flow [2024-06-28 00:01:43,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 145 transitions, 1731 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-28 00:01:43,266 INFO L231 Difference]: Finished difference. Result has 153 places, 132 transitions, 1493 flow [2024-06-28 00:01:43,266 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1375, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1493, PETRI_PLACES=153, PETRI_TRANSITIONS=132} [2024-06-28 00:01:43,266 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 123 predicate places. [2024-06-28 00:01:43,267 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 132 transitions, 1493 flow [2024-06-28 00:01:43,267 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) [2024-06-28 00:01:43,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:43,267 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:43,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 00:01:43,267 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)] === [2024-06-28 00:01:43,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:43,268 INFO L85 PathProgramCache]: Analyzing trace with hash 620539290, now seen corresponding path program 2 times [2024-06-28 00:01:43,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:43,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881763068] [2024-06-28 00:01:43,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:43,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:43,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:44,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:44,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:44,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881763068] [2024-06-28 00:01:44,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881763068] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:44,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:44,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:01:44,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311312324] [2024-06-28 00:01:44,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:44,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:01:44,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:44,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:01:44,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:01:44,511 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:01:44,511 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 132 transitions, 1493 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:44,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:44,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:01:44,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:44,834 INFO L124 PetriNetUnfolderBase]: 404/741 cut-off events. [2024-06-28 00:01:44,835 INFO L125 PetriNetUnfolderBase]: For 21156/21156 co-relation queries the response was YES. [2024-06-28 00:01:44,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4724 conditions, 741 events. 404/741 cut-off events. For 21156/21156 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3465 event pairs, 85 based on Foata normal form. 1/742 useless extension candidates. Maximal degree in co-relation 4655. Up to 671 conditions per place. [2024-06-28 00:01:44,843 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 117 selfloop transitions, 30 changer transitions 0/149 dead transitions. [2024-06-28 00:01:44,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 149 transitions, 1865 flow [2024-06-28 00:01:44,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:01:44,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:01:44,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 104 transitions. [2024-06-28 00:01:44,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33548387096774196 [2024-06-28 00:01:44,846 INFO L175 Difference]: Start difference. First operand has 153 places, 132 transitions, 1493 flow. Second operand 10 states and 104 transitions. [2024-06-28 00:01:44,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 149 transitions, 1865 flow [2024-06-28 00:01:44,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 149 transitions, 1769 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-28 00:01:44,895 INFO L231 Difference]: Finished difference. Result has 157 places, 136 transitions, 1515 flow [2024-06-28 00:01:44,895 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1397, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1515, PETRI_PLACES=157, PETRI_TRANSITIONS=136} [2024-06-28 00:01:44,895 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 127 predicate places. [2024-06-28 00:01:44,896 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 136 transitions, 1515 flow [2024-06-28 00:01:44,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:44,896 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:44,896 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:44,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 00:01:44,896 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)] === [2024-06-28 00:01:44,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:44,897 INFO L85 PathProgramCache]: Analyzing trace with hash 735830460, now seen corresponding path program 3 times [2024-06-28 00:01:44,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:44,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924137891] [2024-06-28 00:01:44,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:44,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:44,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:46,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:46,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:46,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924137891] [2024-06-28 00:01:46,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924137891] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:46,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:46,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:01:46,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038928712] [2024-06-28 00:01:46,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:46,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:01:46,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:46,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:01:46,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:01:46,095 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:01:46,095 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 136 transitions, 1515 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:46,095 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:46,095 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:01:46,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:46,351 INFO L124 PetriNetUnfolderBase]: 420/767 cut-off events. [2024-06-28 00:01:46,351 INFO L125 PetriNetUnfolderBase]: For 23240/23240 co-relation queries the response was YES. [2024-06-28 00:01:46,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5006 conditions, 767 events. 420/767 cut-off events. For 23240/23240 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3605 event pairs, 78 based on Foata normal form. 1/768 useless extension candidates. Maximal degree in co-relation 4935. Up to 635 conditions per place. [2024-06-28 00:01:46,359 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 111 selfloop transitions, 47 changer transitions 0/160 dead transitions. [2024-06-28 00:01:46,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 160 transitions, 2130 flow [2024-06-28 00:01:46,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:01:46,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:01:46,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-28 00:01:46,361 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3580645161290323 [2024-06-28 00:01:46,361 INFO L175 Difference]: Start difference. First operand has 157 places, 136 transitions, 1515 flow. Second operand 10 states and 111 transitions. [2024-06-28 00:01:46,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 160 transitions, 2130 flow [2024-06-28 00:01:46,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 160 transitions, 2043 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-28 00:01:46,409 INFO L231 Difference]: Finished difference. Result has 163 places, 145 transitions, 1685 flow [2024-06-28 00:01:46,409 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1428, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1685, PETRI_PLACES=163, PETRI_TRANSITIONS=145} [2024-06-28 00:01:46,410 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 133 predicate places. [2024-06-28 00:01:46,410 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 145 transitions, 1685 flow [2024-06-28 00:01:46,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:46,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:46,411 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:46,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 00:01:46,411 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)] === [2024-06-28 00:01:46,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:46,411 INFO L85 PathProgramCache]: Analyzing trace with hash 736003440, now seen corresponding path program 4 times [2024-06-28 00:01:46,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:46,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737215013] [2024-06-28 00:01:46,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:46,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:46,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:47,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:47,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:47,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737215013] [2024-06-28 00:01:47,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737215013] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:47,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:47,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:01:47,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770579947] [2024-06-28 00:01:47,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:47,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:01:47,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:47,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:01:47,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:01:47,638 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:01:47,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 145 transitions, 1685 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:47,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:47,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:01:47,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:47,894 INFO L124 PetriNetUnfolderBase]: 423/772 cut-off events. [2024-06-28 00:01:47,894 INFO L125 PetriNetUnfolderBase]: For 25278/25278 co-relation queries the response was YES. [2024-06-28 00:01:47,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5272 conditions, 772 events. 423/772 cut-off events. For 25278/25278 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3642 event pairs, 78 based on Foata normal form. 1/773 useless extension candidates. Maximal degree in co-relation 5197. Up to 639 conditions per place. [2024-06-28 00:01:47,904 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 108 selfloop transitions, 56 changer transitions 0/166 dead transitions. [2024-06-28 00:01:47,905 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 166 transitions, 2298 flow [2024-06-28 00:01:47,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:01:47,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:01:47,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-28 00:01:47,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3580645161290323 [2024-06-28 00:01:47,907 INFO L175 Difference]: Start difference. First operand has 163 places, 145 transitions, 1685 flow. Second operand 10 states and 111 transitions. [2024-06-28 00:01:47,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 166 transitions, 2298 flow [2024-06-28 00:01:47,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 166 transitions, 2202 flow, removed 25 selfloop flow, removed 5 redundant places. [2024-06-28 00:01:47,970 INFO L231 Difference]: Finished difference. Result has 169 places, 152 transitions, 1836 flow [2024-06-28 00:01:47,971 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1593, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1836, PETRI_PLACES=169, PETRI_TRANSITIONS=152} [2024-06-28 00:01:47,971 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 139 predicate places. [2024-06-28 00:01:47,971 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 152 transitions, 1836 flow [2024-06-28 00:01:47,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:47,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:47,972 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:47,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 00:01:47,973 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)] === [2024-06-28 00:01:47,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:47,973 INFO L85 PathProgramCache]: Analyzing trace with hash -982928402, now seen corresponding path program 5 times [2024-06-28 00:01:47,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:47,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8583387] [2024-06-28 00:01:47,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:47,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:47,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:49,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:49,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:49,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8583387] [2024-06-28 00:01:49,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8583387] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:49,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:49,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:01:49,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166428127] [2024-06-28 00:01:49,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:49,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:01:49,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:49,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:01:49,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:01:49,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:01:49,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 152 transitions, 1836 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:49,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:49,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:01:49,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:49,534 INFO L124 PetriNetUnfolderBase]: 421/769 cut-off events. [2024-06-28 00:01:49,535 INFO L125 PetriNetUnfolderBase]: For 26203/26203 co-relation queries the response was YES. [2024-06-28 00:01:49,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5341 conditions, 769 events. 421/769 cut-off events. For 26203/26203 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3625 event pairs, 82 based on Foata normal form. 1/770 useless extension candidates. Maximal degree in co-relation 5264. Up to 637 conditions per place. [2024-06-28 00:01:49,542 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 101 selfloop transitions, 62 changer transitions 0/165 dead transitions. [2024-06-28 00:01:49,542 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 165 transitions, 2266 flow [2024-06-28 00:01:49,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:01:49,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:01:49,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-28 00:01:49,554 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 00:01:49,554 INFO L175 Difference]: Start difference. First operand has 169 places, 152 transitions, 1836 flow. Second operand 10 states and 110 transitions. [2024-06-28 00:01:49,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 165 transitions, 2266 flow [2024-06-28 00:01:49,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 165 transitions, 2143 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-06-28 00:01:49,619 INFO L231 Difference]: Finished difference. Result has 173 places, 152 transitions, 1842 flow [2024-06-28 00:01:49,619 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1713, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1842, PETRI_PLACES=173, PETRI_TRANSITIONS=152} [2024-06-28 00:01:49,620 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 143 predicate places. [2024-06-28 00:01:49,620 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 152 transitions, 1842 flow [2024-06-28 00:01:49,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:49,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:49,620 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:49,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 00:01:49,621 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)] === [2024-06-28 00:01:49,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:49,621 INFO L85 PathProgramCache]: Analyzing trace with hash 736010198, now seen corresponding path program 1 times [2024-06-28 00:01:49,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:49,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957309657] [2024-06-28 00:01:49,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:49,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:49,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:50,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:50,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:50,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957309657] [2024-06-28 00:01:50,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957309657] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:50,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:50,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:01:50,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261737716] [2024-06-28 00:01:50,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:50,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:01:50,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:50,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:01:50,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:01:51,040 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:01:51,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 152 transitions, 1842 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) [2024-06-28 00:01:51,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:51,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:01:51,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:51,243 INFO L124 PetriNetUnfolderBase]: 424/774 cut-off events. [2024-06-28 00:01:51,243 INFO L125 PetriNetUnfolderBase]: For 25545/25545 co-relation queries the response was YES. [2024-06-28 00:01:51,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5206 conditions, 774 events. 424/774 cut-off events. For 25545/25545 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3659 event pairs, 131 based on Foata normal form. 1/775 useless extension candidates. Maximal degree in co-relation 5129. Up to 727 conditions per place. [2024-06-28 00:01:51,254 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 139 selfloop transitions, 23 changer transitions 0/164 dead transitions. [2024-06-28 00:01:51,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 164 transitions, 2210 flow [2024-06-28 00:01:51,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:01:51,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:01:51,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 93 transitions. [2024-06-28 00:01:51,255 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-28 00:01:51,256 INFO L175 Difference]: Start difference. First operand has 173 places, 152 transitions, 1842 flow. Second operand 8 states and 93 transitions. [2024-06-28 00:01:51,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 164 transitions, 2210 flow [2024-06-28 00:01:51,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 164 transitions, 2125 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-28 00:01:51,323 INFO L231 Difference]: Finished difference. Result has 175 places, 154 transitions, 1833 flow [2024-06-28 00:01:51,323 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1757, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1833, PETRI_PLACES=175, PETRI_TRANSITIONS=154} [2024-06-28 00:01:51,323 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 145 predicate places. [2024-06-28 00:01:51,323 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 154 transitions, 1833 flow [2024-06-28 00:01:51,324 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) [2024-06-28 00:01:51,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:51,324 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:51,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 00:01:51,324 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)] === [2024-06-28 00:01:51,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:51,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1581865004, now seen corresponding path program 6 times [2024-06-28 00:01:51,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:51,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137461998] [2024-06-28 00:01:51,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:51,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:51,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:52,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:52,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:52,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137461998] [2024-06-28 00:01:52,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137461998] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:52,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:52,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:01:52,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254983441] [2024-06-28 00:01:52,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:52,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:01:52,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:52,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:01:52,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:01:52,653 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:01:52,654 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 154 transitions, 1833 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) [2024-06-28 00:01:52,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:52,654 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:01:52,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:53,019 INFO L124 PetriNetUnfolderBase]: 367/711 cut-off events. [2024-06-28 00:01:53,019 INFO L125 PetriNetUnfolderBase]: For 28391/28399 co-relation queries the response was YES. [2024-06-28 00:01:53,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5046 conditions, 711 events. 367/711 cut-off events. For 28391/28399 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3549 event pairs, 57 based on Foata normal form. 4/707 useless extension candidates. Maximal degree in co-relation 4969. Up to 574 conditions per place. [2024-06-28 00:01:53,025 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 131 selfloop transitions, 25 changer transitions 0/167 dead transitions. [2024-06-28 00:01:53,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 167 transitions, 2211 flow [2024-06-28 00:01:53,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:01:53,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:01:53,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-28 00:01:53,026 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36917562724014336 [2024-06-28 00:01:53,026 INFO L175 Difference]: Start difference. First operand has 175 places, 154 transitions, 1833 flow. Second operand 9 states and 103 transitions. [2024-06-28 00:01:53,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 167 transitions, 2211 flow [2024-06-28 00:01:53,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 167 transitions, 2153 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-28 00:01:53,073 INFO L231 Difference]: Finished difference. Result has 178 places, 155 transitions, 1865 flow [2024-06-28 00:01:53,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1775, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1865, PETRI_PLACES=178, PETRI_TRANSITIONS=155} [2024-06-28 00:01:53,073 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 148 predicate places. [2024-06-28 00:01:53,073 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 155 transitions, 1865 flow [2024-06-28 00:01:53,073 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) [2024-06-28 00:01:53,074 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:53,074 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:53,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 00:01:53,074 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)] === [2024-06-28 00:01:53,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:53,074 INFO L85 PathProgramCache]: Analyzing trace with hash -381931660, now seen corresponding path program 7 times [2024-06-28 00:01:53,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:53,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33969832] [2024-06-28 00:01:53,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:53,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:53,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:54,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:54,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:54,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33969832] [2024-06-28 00:01:54,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33969832] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:54,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:54,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:01:54,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268277130] [2024-06-28 00:01:54,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:54,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:01:54,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:54,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:01:54,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:01:54,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:01:54,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 155 transitions, 1865 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) [2024-06-28 00:01:54,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:54,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:01:54,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:54,687 INFO L124 PetriNetUnfolderBase]: 365/713 cut-off events. [2024-06-28 00:01:54,687 INFO L125 PetriNetUnfolderBase]: For 30078/30086 co-relation queries the response was YES. [2024-06-28 00:01:54,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5058 conditions, 713 events. 365/713 cut-off events. For 30078/30086 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3587 event pairs, 59 based on Foata normal form. 4/709 useless extension candidates. Maximal degree in co-relation 4979. Up to 577 conditions per place. [2024-06-28 00:01:54,693 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 126 selfloop transitions, 29 changer transitions 0/166 dead transitions. [2024-06-28 00:01:54,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 166 transitions, 2237 flow [2024-06-28 00:01:54,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:01:54,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:01:54,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-28 00:01:54,697 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36917562724014336 [2024-06-28 00:01:54,697 INFO L175 Difference]: Start difference. First operand has 178 places, 155 transitions, 1865 flow. Second operand 9 states and 103 transitions. [2024-06-28 00:01:54,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 166 transitions, 2237 flow [2024-06-28 00:01:54,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 166 transitions, 2156 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-28 00:01:54,769 INFO L231 Difference]: Finished difference. Result has 181 places, 156 transitions, 1885 flow [2024-06-28 00:01:54,769 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1784, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1885, PETRI_PLACES=181, PETRI_TRANSITIONS=156} [2024-06-28 00:01:54,769 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 151 predicate places. [2024-06-28 00:01:54,770 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 156 transitions, 1885 flow [2024-06-28 00:01:54,770 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) [2024-06-28 00:01:54,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:54,770 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:54,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 00:01:54,770 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)] === [2024-06-28 00:01:54,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:54,771 INFO L85 PathProgramCache]: Analyzing trace with hash -379130190, now seen corresponding path program 6 times [2024-06-28 00:01:54,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:54,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278820978] [2024-06-28 00:01:54,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:54,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:54,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:55,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:55,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:55,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278820978] [2024-06-28 00:01:55,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278820978] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:55,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:55,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:01:55,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42869319] [2024-06-28 00:01:55,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:55,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:01:55,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:55,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:01:55,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:01:56,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:01:56,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 156 transitions, 1885 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:56,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:56,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:01:56,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:56,316 INFO L124 PetriNetUnfolderBase]: 443/811 cut-off events. [2024-06-28 00:01:56,316 INFO L125 PetriNetUnfolderBase]: For 30314/30314 co-relation queries the response was YES. [2024-06-28 00:01:56,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5509 conditions, 811 events. 443/811 cut-off events. For 30314/30314 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 3911 event pairs, 85 based on Foata normal form. 1/812 useless extension candidates. Maximal degree in co-relation 5430. Up to 741 conditions per place. [2024-06-28 00:01:56,322 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 138 selfloop transitions, 30 changer transitions 0/170 dead transitions. [2024-06-28 00:01:56,322 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 170 transitions, 2297 flow [2024-06-28 00:01:56,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:01:56,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:01:56,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 102 transitions. [2024-06-28 00:01:56,323 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32903225806451614 [2024-06-28 00:01:56,324 INFO L175 Difference]: Start difference. First operand has 181 places, 156 transitions, 1885 flow. Second operand 10 states and 102 transitions. [2024-06-28 00:01:56,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 170 transitions, 2297 flow [2024-06-28 00:01:56,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 170 transitions, 2208 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-28 00:01:56,372 INFO L231 Difference]: Finished difference. Result has 185 places, 160 transitions, 1920 flow [2024-06-28 00:01:56,373 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1796, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1920, PETRI_PLACES=185, PETRI_TRANSITIONS=160} [2024-06-28 00:01:56,373 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 155 predicate places. [2024-06-28 00:01:56,373 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 160 transitions, 1920 flow [2024-06-28 00:01:56,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:56,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:56,374 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:56,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 00:01:56,374 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)] === [2024-06-28 00:01:56,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:56,374 INFO L85 PathProgramCache]: Analyzing trace with hash -2059696156, now seen corresponding path program 7 times [2024-06-28 00:01:56,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:56,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245924260] [2024-06-28 00:01:56,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:56,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:56,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:57,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:57,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:57,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245924260] [2024-06-28 00:01:57,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245924260] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:57,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:57,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:01:57,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915765610] [2024-06-28 00:01:57,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:57,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:01:57,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:57,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:01:57,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:01:57,576 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:01:57,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 160 transitions, 1920 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:57,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:57,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:01:57,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:57,871 INFO L124 PetriNetUnfolderBase]: 456/832 cut-off events. [2024-06-28 00:01:57,871 INFO L125 PetriNetUnfolderBase]: For 33202/33202 co-relation queries the response was YES. [2024-06-28 00:01:57,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5818 conditions, 832 events. 456/832 cut-off events. For 33202/33202 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 4028 event pairs, 81 based on Foata normal form. 1/833 useless extension candidates. Maximal degree in co-relation 5737. Up to 728 conditions per place. [2024-06-28 00:01:57,881 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 132 selfloop transitions, 44 changer transitions 0/178 dead transitions. [2024-06-28 00:01:57,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 178 transitions, 2495 flow [2024-06-28 00:01:57,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:01:57,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:01:57,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-28 00:01:57,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-06-28 00:01:57,882 INFO L175 Difference]: Start difference. First operand has 185 places, 160 transitions, 1920 flow. Second operand 10 states and 109 transitions. [2024-06-28 00:01:57,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 178 transitions, 2495 flow [2024-06-28 00:01:57,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 178 transitions, 2400 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-28 00:01:57,964 INFO L231 Difference]: Finished difference. Result has 190 places, 168 transitions, 2063 flow [2024-06-28 00:01:57,965 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1825, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2063, PETRI_PLACES=190, PETRI_TRANSITIONS=168} [2024-06-28 00:01:57,966 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 160 predicate places. [2024-06-28 00:01:57,966 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 168 transitions, 2063 flow [2024-06-28 00:01:57,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:57,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:57,966 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:57,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 00:01:57,968 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)] === [2024-06-28 00:01:57,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:57,969 INFO L85 PathProgramCache]: Analyzing trace with hash 1611673264, now seen corresponding path program 8 times [2024-06-28 00:01:57,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:57,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299539093] [2024-06-28 00:01:57,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:57,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:57,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:59,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:59,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:59,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299539093] [2024-06-28 00:01:59,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299539093] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:59,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:59,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:01:59,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451264391] [2024-06-28 00:01:59,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:59,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:01:59,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:59,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:01:59,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:01:59,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:01:59,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 168 transitions, 2063 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:59,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:59,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:01:59,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:59,626 INFO L124 PetriNetUnfolderBase]: 462/842 cut-off events. [2024-06-28 00:01:59,626 INFO L125 PetriNetUnfolderBase]: For 35293/35293 co-relation queries the response was YES. [2024-06-28 00:01:59,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6071 conditions, 842 events. 462/842 cut-off events. For 35293/35293 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 4077 event pairs, 81 based on Foata normal form. 1/843 useless extension candidates. Maximal degree in co-relation 5988. Up to 734 conditions per place. [2024-06-28 00:01:59,635 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 135 selfloop transitions, 45 changer transitions 0/182 dead transitions. [2024-06-28 00:01:59,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 182 transitions, 2595 flow [2024-06-28 00:01:59,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:01:59,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:01:59,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-28 00:01:59,636 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-06-28 00:01:59,636 INFO L175 Difference]: Start difference. First operand has 190 places, 168 transitions, 2063 flow. Second operand 10 states and 109 transitions. [2024-06-28 00:01:59,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 182 transitions, 2595 flow [2024-06-28 00:01:59,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 182 transitions, 2463 flow, removed 29 selfloop flow, removed 5 redundant places. [2024-06-28 00:01:59,697 INFO L231 Difference]: Finished difference. Result has 196 places, 172 transitions, 2098 flow [2024-06-28 00:01:59,697 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1937, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2098, PETRI_PLACES=196, PETRI_TRANSITIONS=172} [2024-06-28 00:01:59,697 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 166 predicate places. [2024-06-28 00:01:59,698 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 172 transitions, 2098 flow [2024-06-28 00:01:59,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:59,698 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:59,698 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:59,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 00:01:59,698 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)] === [2024-06-28 00:01:59,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:59,699 INFO L85 PathProgramCache]: Analyzing trace with hash -1463711914, now seen corresponding path program 9 times [2024-06-28 00:01:59,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:59,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77056995] [2024-06-28 00:01:59,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:59,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:59,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:00,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:00,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:00,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77056995] [2024-06-28 00:02:00,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77056995] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:00,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:00,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:02:00,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801757616] [2024-06-28 00:02:00,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:00,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:02:00,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:00,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:02:00,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:02:00,897 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:02:00,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 172 transitions, 2098 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:00,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:00,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:02:00,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:01,176 INFO L124 PetriNetUnfolderBase]: 460/839 cut-off events. [2024-06-28 00:02:01,176 INFO L125 PetriNetUnfolderBase]: For 34772/34772 co-relation queries the response was YES. [2024-06-28 00:02:01,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5930 conditions, 839 events. 460/839 cut-off events. For 34772/34772 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 4064 event pairs, 85 based on Foata normal form. 1/840 useless extension candidates. Maximal degree in co-relation 5844. Up to 732 conditions per place. [2024-06-28 00:02:01,185 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 137 selfloop transitions, 45 changer transitions 0/184 dead transitions. [2024-06-28 00:02:01,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 184 transitions, 2602 flow [2024-06-28 00:02:01,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:02:01,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:02:01,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-28 00:02:01,186 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-06-28 00:02:01,186 INFO L175 Difference]: Start difference. First operand has 196 places, 172 transitions, 2098 flow. Second operand 10 states and 109 transitions. [2024-06-28 00:02:01,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 184 transitions, 2602 flow [2024-06-28 00:02:01,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 184 transitions, 2505 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-28 00:02:01,253 INFO L231 Difference]: Finished difference. Result has 201 places, 174 transitions, 2138 flow [2024-06-28 00:02:01,253 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2003, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2138, PETRI_PLACES=201, PETRI_TRANSITIONS=174} [2024-06-28 00:02:01,253 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 171 predicate places. [2024-06-28 00:02:01,254 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 174 transitions, 2138 flow [2024-06-28 00:02:01,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:01,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:01,254 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:01,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 00:02:01,254 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)] === [2024-06-28 00:02:01,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:01,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1463716874, now seen corresponding path program 8 times [2024-06-28 00:02:01,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:01,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882014460] [2024-06-28 00:02:01,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:01,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:01,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:02,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:02,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:02,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882014460] [2024-06-28 00:02:02,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882014460] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:02,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:02,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:02:02,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465506783] [2024-06-28 00:02:02,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:02,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:02:02,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:02,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:02:02,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:02:02,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:02:02,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 174 transitions, 2138 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) [2024-06-28 00:02:02,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:02,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:02:02,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:03,032 INFO L124 PetriNetUnfolderBase]: 392/757 cut-off events. [2024-06-28 00:02:03,033 INFO L125 PetriNetUnfolderBase]: For 37789/37793 co-relation queries the response was YES. [2024-06-28 00:02:03,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5584 conditions, 757 events. 392/757 cut-off events. For 37789/37793 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 3839 event pairs, 58 based on Foata normal form. 4/751 useless extension candidates. Maximal degree in co-relation 5496. Up to 597 conditions per place. [2024-06-28 00:02:03,039 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 132 selfloop transitions, 39 changer transitions 0/185 dead transitions. [2024-06-28 00:02:03,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 185 transitions, 2542 flow [2024-06-28 00:02:03,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:02:03,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:02:03,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-28 00:02:03,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835125448028674 [2024-06-28 00:02:03,041 INFO L175 Difference]: Start difference. First operand has 201 places, 174 transitions, 2138 flow. Second operand 9 states and 107 transitions. [2024-06-28 00:02:03,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 185 transitions, 2542 flow [2024-06-28 00:02:03,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 185 transitions, 2443 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-28 00:02:03,120 INFO L231 Difference]: Finished difference. Result has 204 places, 175 transitions, 2161 flow [2024-06-28 00:02:03,120 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2039, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2161, PETRI_PLACES=204, PETRI_TRANSITIONS=175} [2024-06-28 00:02:03,121 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 174 predicate places. [2024-06-28 00:02:03,121 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 175 transitions, 2161 flow [2024-06-28 00:02:03,122 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) [2024-06-28 00:02:03,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:03,122 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:03,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 00:02:03,122 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)] === [2024-06-28 00:02:03,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:03,123 INFO L85 PathProgramCache]: Analyzing trace with hash -176492412, now seen corresponding path program 9 times [2024-06-28 00:02:03,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:03,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511957567] [2024-06-28 00:02:03,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:03,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:03,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:04,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:04,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:04,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511957567] [2024-06-28 00:02:04,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511957567] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:04,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:04,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:02:04,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446014839] [2024-06-28 00:02:04,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:04,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:02:04,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:04,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:02:04,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:02:04,503 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:02:04,504 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 175 transitions, 2161 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) [2024-06-28 00:02:04,504 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:04,504 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:02:04,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:04,797 INFO L124 PetriNetUnfolderBase]: 389/753 cut-off events. [2024-06-28 00:02:04,797 INFO L125 PetriNetUnfolderBase]: For 35503/35507 co-relation queries the response was YES. [2024-06-28 00:02:04,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5451 conditions, 753 events. 389/753 cut-off events. For 35503/35507 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 3816 event pairs, 63 based on Foata normal form. 2/745 useless extension candidates. Maximal degree in co-relation 5363. Up to 531 conditions per place. [2024-06-28 00:02:04,803 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 105 selfloop transitions, 64 changer transitions 0/183 dead transitions. [2024-06-28 00:02:04,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 183 transitions, 2517 flow [2024-06-28 00:02:04,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:02:04,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:02:04,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-28 00:02:04,804 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36917562724014336 [2024-06-28 00:02:04,805 INFO L175 Difference]: Start difference. First operand has 204 places, 175 transitions, 2161 flow. Second operand 9 states and 103 transitions. [2024-06-28 00:02:04,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 183 transitions, 2517 flow [2024-06-28 00:02:04,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 183 transitions, 2395 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-28 00:02:04,879 INFO L231 Difference]: Finished difference. Result has 206 places, 175 transitions, 2171 flow [2024-06-28 00:02:04,879 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2039, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2171, PETRI_PLACES=206, PETRI_TRANSITIONS=175} [2024-06-28 00:02:04,879 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 176 predicate places. [2024-06-28 00:02:04,879 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 175 transitions, 2171 flow [2024-06-28 00:02:04,880 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) [2024-06-28 00:02:04,880 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:04,880 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:04,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 00:02:04,880 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)] === [2024-06-28 00:02:04,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:04,880 INFO L85 PathProgramCache]: Analyzing trace with hash -176487452, now seen corresponding path program 10 times [2024-06-28 00:02:04,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:04,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876640035] [2024-06-28 00:02:04,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:04,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:04,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:06,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:06,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:06,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876640035] [2024-06-28 00:02:06,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876640035] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:06,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:06,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:02:06,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584906477] [2024-06-28 00:02:06,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:06,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:02:06,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:06,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:02:06,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:02:06,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:02:06,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 175 transitions, 2171 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:06,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:06,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:02:06,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:06,431 INFO L124 PetriNetUnfolderBase]: 468/855 cut-off events. [2024-06-28 00:02:06,432 INFO L125 PetriNetUnfolderBase]: For 35394/35394 co-relation queries the response was YES. [2024-06-28 00:02:06,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5926 conditions, 855 events. 468/855 cut-off events. For 35394/35394 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 4193 event pairs, 82 based on Foata normal form. 1/856 useless extension candidates. Maximal degree in co-relation 5837. Up to 626 conditions per place. [2024-06-28 00:02:06,439 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 104 selfloop transitions, 86 changer transitions 0/192 dead transitions. [2024-06-28 00:02:06,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 192 transitions, 2861 flow [2024-06-28 00:02:06,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:02:06,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:02:06,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-28 00:02:06,441 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 00:02:06,441 INFO L175 Difference]: Start difference. First operand has 206 places, 175 transitions, 2171 flow. Second operand 10 states and 110 transitions. [2024-06-28 00:02:06,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 192 transitions, 2861 flow [2024-06-28 00:02:06,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 192 transitions, 2671 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-28 00:02:06,528 INFO L231 Difference]: Finished difference. Result has 210 places, 182 transitions, 2283 flow [2024-06-28 00:02:06,529 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1983, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2283, PETRI_PLACES=210, PETRI_TRANSITIONS=182} [2024-06-28 00:02:06,529 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 180 predicate places. [2024-06-28 00:02:06,529 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 182 transitions, 2283 flow [2024-06-28 00:02:06,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:06,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:06,531 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:06,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 00:02:06,533 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)] === [2024-06-28 00:02:06,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:06,534 INFO L85 PathProgramCache]: Analyzing trace with hash -176314472, now seen corresponding path program 11 times [2024-06-28 00:02:06,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:06,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485415843] [2024-06-28 00:02:06,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:06,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:06,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:07,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:07,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:07,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485415843] [2024-06-28 00:02:07,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485415843] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:07,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:07,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:02:07,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268580329] [2024-06-28 00:02:07,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:07,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:02:07,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:07,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:02:07,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:02:07,769 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:02:07,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 182 transitions, 2283 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:07,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:07,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:02:07,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:08,034 INFO L124 PetriNetUnfolderBase]: 479/873 cut-off events. [2024-06-28 00:02:08,034 INFO L125 PetriNetUnfolderBase]: For 37929/37929 co-relation queries the response was YES. [2024-06-28 00:02:08,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6174 conditions, 873 events. 479/873 cut-off events. For 37929/37929 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 4302 event pairs, 82 based on Foata normal form. 1/874 useless extension candidates. Maximal degree in co-relation 6083. Up to 638 conditions per place. [2024-06-28 00:02:08,041 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 109 selfloop transitions, 88 changer transitions 0/199 dead transitions. [2024-06-28 00:02:08,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 199 transitions, 3090 flow [2024-06-28 00:02:08,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:02:08,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:02:08,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-28 00:02:08,043 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36451612903225805 [2024-06-28 00:02:08,044 INFO L175 Difference]: Start difference. First operand has 210 places, 182 transitions, 2283 flow. Second operand 10 states and 113 transitions. [2024-06-28 00:02:08,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 199 transitions, 3090 flow [2024-06-28 00:02:08,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 199 transitions, 2843 flow, removed 42 selfloop flow, removed 7 redundant places. [2024-06-28 00:02:08,143 INFO L231 Difference]: Finished difference. Result has 214 places, 188 transitions, 2332 flow [2024-06-28 00:02:08,143 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2056, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2332, PETRI_PLACES=214, PETRI_TRANSITIONS=188} [2024-06-28 00:02:08,143 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 184 predicate places. [2024-06-28 00:02:08,144 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 188 transitions, 2332 flow [2024-06-28 00:02:08,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:08,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:08,144 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:08,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 00:02:08,144 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)] === [2024-06-28 00:02:08,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:08,144 INFO L85 PathProgramCache]: Analyzing trace with hash -176307714, now seen corresponding path program 2 times [2024-06-28 00:02:08,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:08,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138493227] [2024-06-28 00:02:08,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:08,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:08,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:09,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:09,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:09,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138493227] [2024-06-28 00:02:09,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138493227] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:09,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:09,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:02:09,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543524138] [2024-06-28 00:02:09,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:09,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:02:09,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:09,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:02:09,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:02:09,714 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:02:09,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 188 transitions, 2332 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) [2024-06-28 00:02:09,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:09,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:02:09,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:09,905 INFO L124 PetriNetUnfolderBase]: 482/878 cut-off events. [2024-06-28 00:02:09,905 INFO L125 PetriNetUnfolderBase]: For 38377/38377 co-relation queries the response was YES. [2024-06-28 00:02:09,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6132 conditions, 878 events. 482/878 cut-off events. For 38377/38377 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4361 event pairs, 122 based on Foata normal form. 1/879 useless extension candidates. Maximal degree in co-relation 6040. Up to 790 conditions per place. [2024-06-28 00:02:09,912 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 166 selfloop transitions, 33 changer transitions 0/201 dead transitions. [2024-06-28 00:02:09,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 201 transitions, 2894 flow [2024-06-28 00:02:09,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:02:09,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:02:09,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 99 transitions. [2024-06-28 00:02:09,913 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39919354838709675 [2024-06-28 00:02:09,913 INFO L175 Difference]: Start difference. First operand has 214 places, 188 transitions, 2332 flow. Second operand 8 states and 99 transitions. [2024-06-28 00:02:09,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 201 transitions, 2894 flow [2024-06-28 00:02:10,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 201 transitions, 2709 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-28 00:02:10,008 INFO L231 Difference]: Finished difference. Result has 216 places, 192 transitions, 2270 flow [2024-06-28 00:02:10,008 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2147, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2270, PETRI_PLACES=216, PETRI_TRANSITIONS=192} [2024-06-28 00:02:10,008 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 186 predicate places. [2024-06-28 00:02:10,008 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 192 transitions, 2270 flow [2024-06-28 00:02:10,008 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) [2024-06-28 00:02:10,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:10,009 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:10,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 00:02:10,009 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)] === [2024-06-28 00:02:10,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:10,009 INFO L85 PathProgramCache]: Analyzing trace with hash -176307962, now seen corresponding path program 12 times [2024-06-28 00:02:10,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:10,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162482007] [2024-06-28 00:02:10,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:10,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:10,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:11,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:11,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:11,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162482007] [2024-06-28 00:02:11,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162482007] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:11,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:11,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:02:11,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871557184] [2024-06-28 00:02:11,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:11,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:02:11,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:11,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:02:11,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:02:11,263 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:02:11,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 192 transitions, 2270 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:11,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:11,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:02:11,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:11,524 INFO L124 PetriNetUnfolderBase]: 480/875 cut-off events. [2024-06-28 00:02:11,524 INFO L125 PetriNetUnfolderBase]: For 38541/38541 co-relation queries the response was YES. [2024-06-28 00:02:11,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5982 conditions, 875 events. 480/875 cut-off events. For 38541/38541 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4320 event pairs, 78 based on Foata normal form. 1/876 useless extension candidates. Maximal degree in co-relation 5890. Up to 641 conditions per place. [2024-06-28 00:02:11,531 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 111 selfloop transitions, 89 changer transitions 0/202 dead transitions. [2024-06-28 00:02:11,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 202 transitions, 2888 flow [2024-06-28 00:02:11,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:02:11,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:02:11,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-28 00:02:11,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3580645161290323 [2024-06-28 00:02:11,532 INFO L175 Difference]: Start difference. First operand has 216 places, 192 transitions, 2270 flow. Second operand 10 states and 111 transitions. [2024-06-28 00:02:11,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 202 transitions, 2888 flow [2024-06-28 00:02:11,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 202 transitions, 2815 flow, removed 22 selfloop flow, removed 4 redundant places. [2024-06-28 00:02:11,626 INFO L231 Difference]: Finished difference. Result has 222 places, 192 transitions, 2380 flow [2024-06-28 00:02:11,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2197, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2380, PETRI_PLACES=222, PETRI_TRANSITIONS=192} [2024-06-28 00:02:11,627 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 192 predicate places. [2024-06-28 00:02:11,627 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 192 transitions, 2380 flow [2024-06-28 00:02:11,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:11,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:11,627 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:11,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 00:02:11,627 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)] === [2024-06-28 00:02:11,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:11,628 INFO L85 PathProgramCache]: Analyzing trace with hash 51586678, now seen corresponding path program 13 times [2024-06-28 00:02:11,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:11,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388534582] [2024-06-28 00:02:11,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:11,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:11,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:12,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:12,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:12,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388534582] [2024-06-28 00:02:12,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388534582] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:12,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:12,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:02:12,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215500768] [2024-06-28 00:02:12,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:12,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:02:12,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:12,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:02:12,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:02:12,928 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:02:12,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 192 transitions, 2380 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:12,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:12,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:02:12,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:13,199 INFO L124 PetriNetUnfolderBase]: 483/880 cut-off events. [2024-06-28 00:02:13,199 INFO L125 PetriNetUnfolderBase]: For 40396/40396 co-relation queries the response was YES. [2024-06-28 00:02:13,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6193 conditions, 880 events. 483/880 cut-off events. For 40396/40396 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 4363 event pairs, 82 based on Foata normal form. 1/881 useless extension candidates. Maximal degree in co-relation 6098. Up to 645 conditions per place. [2024-06-28 00:02:13,206 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 102 selfloop transitions, 101 changer transitions 0/205 dead transitions. [2024-06-28 00:02:13,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 205 transitions, 3060 flow [2024-06-28 00:02:13,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:02:13,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:02:13,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-28 00:02:13,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 00:02:13,208 INFO L175 Difference]: Start difference. First operand has 222 places, 192 transitions, 2380 flow. Second operand 10 states and 110 transitions. [2024-06-28 00:02:13,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 205 transitions, 3060 flow [2024-06-28 00:02:13,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 205 transitions, 2884 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-28 00:02:13,308 INFO L231 Difference]: Finished difference. Result has 225 places, 195 transitions, 2463 flow [2024-06-28 00:02:13,308 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2210, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2463, PETRI_PLACES=225, PETRI_TRANSITIONS=195} [2024-06-28 00:02:13,309 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 195 predicate places. [2024-06-28 00:02:13,309 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 195 transitions, 2463 flow [2024-06-28 00:02:13,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:13,309 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:13,309 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:13,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 00:02:13,309 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)] === [2024-06-28 00:02:13,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:13,309 INFO L85 PathProgramCache]: Analyzing trace with hash 59867398, now seen corresponding path program 14 times [2024-06-28 00:02:13,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:13,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598003582] [2024-06-28 00:02:13,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:13,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:13,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:14,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:14,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:14,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598003582] [2024-06-28 00:02:14,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598003582] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:14,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:14,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:02:14,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667003749] [2024-06-28 00:02:14,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:14,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:02:14,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:14,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:02:14,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:02:14,560 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:02:14,560 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 195 transitions, 2463 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:14,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:14,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:02:14,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:14,815 INFO L124 PetriNetUnfolderBase]: 486/885 cut-off events. [2024-06-28 00:02:14,815 INFO L125 PetriNetUnfolderBase]: For 41930/41930 co-relation queries the response was YES. [2024-06-28 00:02:14,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6300 conditions, 885 events. 486/885 cut-off events. For 41930/41930 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4378 event pairs, 80 based on Foata normal form. 1/886 useless extension candidates. Maximal degree in co-relation 6204. Up to 649 conditions per place. [2024-06-28 00:02:14,824 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 86 selfloop transitions, 118 changer transitions 0/206 dead transitions. [2024-06-28 00:02:14,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 206 transitions, 3035 flow [2024-06-28 00:02:14,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:02:14,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:02:14,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-28 00:02:14,826 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-06-28 00:02:14,826 INFO L175 Difference]: Start difference. First operand has 225 places, 195 transitions, 2463 flow. Second operand 10 states and 109 transitions. [2024-06-28 00:02:14,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 206 transitions, 3035 flow [2024-06-28 00:02:14,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 206 transitions, 2834 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-28 00:02:14,930 INFO L231 Difference]: Finished difference. Result has 227 places, 197 transitions, 2545 flow [2024-06-28 00:02:14,930 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2264, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2545, PETRI_PLACES=227, PETRI_TRANSITIONS=197} [2024-06-28 00:02:14,931 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 197 predicate places. [2024-06-28 00:02:14,931 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 197 transitions, 2545 flow [2024-06-28 00:02:14,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:14,931 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:14,931 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:14,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 00:02:14,932 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)] === [2024-06-28 00:02:14,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:14,932 INFO L85 PathProgramCache]: Analyzing trace with hash 59876016, now seen corresponding path program 3 times [2024-06-28 00:02:14,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:14,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392735393] [2024-06-28 00:02:14,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:14,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:14,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:16,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:16,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:16,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392735393] [2024-06-28 00:02:16,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392735393] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:16,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:16,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:02:16,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59511275] [2024-06-28 00:02:16,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:16,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:02:16,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:16,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:02:16,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:02:16,202 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:02:16,202 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 197 transitions, 2545 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:16,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:16,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:02:16,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:16,501 INFO L124 PetriNetUnfolderBase]: 489/890 cut-off events. [2024-06-28 00:02:16,501 INFO L125 PetriNetUnfolderBase]: For 42822/42822 co-relation queries the response was YES. [2024-06-28 00:02:16,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6381 conditions, 890 events. 489/890 cut-off events. For 42822/42822 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 4423 event pairs, 167 based on Foata normal form. 1/891 useless extension candidates. Maximal degree in co-relation 6286. Up to 862 conditions per place. [2024-06-28 00:02:16,509 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 189 selfloop transitions, 16 changer transitions 0/207 dead transitions. [2024-06-28 00:02:16,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 207 transitions, 3001 flow [2024-06-28 00:02:16,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:02:16,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:02:16,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 88 transitions. [2024-06-28 00:02:16,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3154121863799283 [2024-06-28 00:02:16,511 INFO L175 Difference]: Start difference. First operand has 227 places, 197 transitions, 2545 flow. Second operand 9 states and 88 transitions. [2024-06-28 00:02:16,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 207 transitions, 3001 flow [2024-06-28 00:02:16,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 207 transitions, 2844 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-28 00:02:16,618 INFO L231 Difference]: Finished difference. Result has 230 places, 199 transitions, 2457 flow [2024-06-28 00:02:16,618 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2388, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2457, PETRI_PLACES=230, PETRI_TRANSITIONS=199} [2024-06-28 00:02:16,618 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 200 predicate places. [2024-06-28 00:02:16,619 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 199 transitions, 2457 flow [2024-06-28 00:02:16,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:16,619 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:16,619 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:16,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 00:02:16,619 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)] === [2024-06-28 00:02:16,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:16,619 INFO L85 PathProgramCache]: Analyzing trace with hash 59867646, now seen corresponding path program 4 times [2024-06-28 00:02:16,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:16,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521023104] [2024-06-28 00:02:16,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:16,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:16,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:18,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:18,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:18,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521023104] [2024-06-28 00:02:18,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521023104] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:18,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:18,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:02:18,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036093634] [2024-06-28 00:02:18,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:18,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:02:18,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:18,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:02:18,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:02:18,102 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:02:18,102 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 199 transitions, 2457 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) [2024-06-28 00:02:18,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:18,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:02:18,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:18,297 INFO L124 PetriNetUnfolderBase]: 492/895 cut-off events. [2024-06-28 00:02:18,297 INFO L125 PetriNetUnfolderBase]: For 44123/44123 co-relation queries the response was YES. [2024-06-28 00:02:18,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6286 conditions, 895 events. 492/895 cut-off events. For 44123/44123 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4453 event pairs, 128 based on Foata normal form. 1/896 useless extension candidates. Maximal degree in co-relation 6190. Up to 805 conditions per place. [2024-06-28 00:02:18,306 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 166 selfloop transitions, 42 changer transitions 0/210 dead transitions. [2024-06-28 00:02:18,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 210 transitions, 3031 flow [2024-06-28 00:02:18,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:02:18,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:02:18,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 97 transitions. [2024-06-28 00:02:18,309 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3911290322580645 [2024-06-28 00:02:18,309 INFO L175 Difference]: Start difference. First operand has 230 places, 199 transitions, 2457 flow. Second operand 8 states and 97 transitions. [2024-06-28 00:02:18,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 210 transitions, 3031 flow [2024-06-28 00:02:18,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 210 transitions, 2982 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-28 00:02:18,425 INFO L231 Difference]: Finished difference. Result has 231 places, 201 transitions, 2529 flow [2024-06-28 00:02:18,425 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2408, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2529, PETRI_PLACES=231, PETRI_TRANSITIONS=201} [2024-06-28 00:02:18,426 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 201 predicate places. [2024-06-28 00:02:18,426 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 201 transitions, 2529 flow [2024-06-28 00:02:18,426 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) [2024-06-28 00:02:18,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:18,426 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:18,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 00:02:18,427 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)] === [2024-06-28 00:02:18,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:18,427 INFO L85 PathProgramCache]: Analyzing trace with hash 36093658, now seen corresponding path program 15 times [2024-06-28 00:02:18,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:18,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857101499] [2024-06-28 00:02:18,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:18,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:18,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:19,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:19,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:19,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857101499] [2024-06-28 00:02:19,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857101499] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:19,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:19,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:02:19,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968936188] [2024-06-28 00:02:19,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:19,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:02:19,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:19,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:02:19,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:02:19,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:02:19,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 201 transitions, 2529 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:19,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:19,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:02:19,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:20,147 INFO L124 PetriNetUnfolderBase]: 490/892 cut-off events. [2024-06-28 00:02:20,147 INFO L125 PetriNetUnfolderBase]: For 44658/44658 co-relation queries the response was YES. [2024-06-28 00:02:20,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6281 conditions, 892 events. 490/892 cut-off events. For 44658/44658 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4418 event pairs, 80 based on Foata normal form. 1/893 useless extension candidates. Maximal degree in co-relation 6185. Up to 657 conditions per place. [2024-06-28 00:02:20,155 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 106 selfloop transitions, 102 changer transitions 0/210 dead transitions. [2024-06-28 00:02:20,156 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 210 transitions, 3073 flow [2024-06-28 00:02:20,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:02:20,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:02:20,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-28 00:02:20,157 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 00:02:20,157 INFO L175 Difference]: Start difference. First operand has 231 places, 201 transitions, 2529 flow. Second operand 10 states and 110 transitions. [2024-06-28 00:02:20,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 210 transitions, 3073 flow [2024-06-28 00:02:20,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 210 transitions, 2962 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-06-28 00:02:20,276 INFO L231 Difference]: Finished difference. Result has 236 places, 201 transitions, 2627 flow [2024-06-28 00:02:20,276 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2418, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2627, PETRI_PLACES=236, PETRI_TRANSITIONS=201} [2024-06-28 00:02:20,276 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 206 predicate places. [2024-06-28 00:02:20,276 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 201 transitions, 2627 flow [2024-06-28 00:02:20,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:20,276 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:20,276 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:20,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 00:02:20,277 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)] === [2024-06-28 00:02:20,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:20,277 INFO L85 PathProgramCache]: Analyzing trace with hash 51593436, now seen corresponding path program 5 times [2024-06-28 00:02:20,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:20,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210289767] [2024-06-28 00:02:20,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:20,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:20,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:21,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:21,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:21,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210289767] [2024-06-28 00:02:21,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210289767] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:21,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:21,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:02:21,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728970988] [2024-06-28 00:02:21,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:21,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:02:21,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:21,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:02:21,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:02:21,786 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:02:21,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 201 transitions, 2627 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) [2024-06-28 00:02:21,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:21,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:02:21,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:22,025 INFO L124 PetriNetUnfolderBase]: 488/889 cut-off events. [2024-06-28 00:02:22,025 INFO L125 PetriNetUnfolderBase]: For 44342/44342 co-relation queries the response was YES. [2024-06-28 00:02:22,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6325 conditions, 889 events. 488/889 cut-off events. For 44342/44342 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4425 event pairs, 122 based on Foata normal form. 1/890 useless extension candidates. Maximal degree in co-relation 6227. Up to 800 conditions per place. [2024-06-28 00:02:22,033 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 168 selfloop transitions, 39 changer transitions 0/209 dead transitions. [2024-06-28 00:02:22,033 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 209 transitions, 3059 flow [2024-06-28 00:02:22,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:02:22,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:02:22,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 97 transitions. [2024-06-28 00:02:22,034 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3911290322580645 [2024-06-28 00:02:22,034 INFO L175 Difference]: Start difference. First operand has 236 places, 201 transitions, 2627 flow. Second operand 8 states and 97 transitions. [2024-06-28 00:02:22,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 209 transitions, 3059 flow [2024-06-28 00:02:22,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 209 transitions, 2785 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-28 00:02:22,144 INFO L231 Difference]: Finished difference. Result has 236 places, 201 transitions, 2436 flow [2024-06-28 00:02:22,144 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2353, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2436, PETRI_PLACES=236, PETRI_TRANSITIONS=201} [2024-06-28 00:02:22,145 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 206 predicate places. [2024-06-28 00:02:22,145 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 201 transitions, 2436 flow [2024-06-28 00:02:22,145 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) [2024-06-28 00:02:22,145 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:22,146 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:22,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 00:02:22,146 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)] === [2024-06-28 00:02:22,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:22,146 INFO L85 PathProgramCache]: Analyzing trace with hash 60175228, now seen corresponding path program 1 times [2024-06-28 00:02:22,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:22,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019044182] [2024-06-28 00:02:22,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:22,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:22,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:23,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:23,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:23,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019044182] [2024-06-28 00:02:23,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019044182] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:23,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:23,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:02:23,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084600680] [2024-06-28 00:02:23,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:23,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:02:23,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:23,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:02:23,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:02:23,947 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:02:23,947 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 201 transitions, 2436 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:23,947 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:23,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:02:23,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:24,226 INFO L124 PetriNetUnfolderBase]: 485/885 cut-off events. [2024-06-28 00:02:24,227 INFO L125 PetriNetUnfolderBase]: For 43958/43958 co-relation queries the response was YES. [2024-06-28 00:02:24,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6040 conditions, 885 events. 485/885 cut-off events. For 43958/43958 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 4398 event pairs, 160 based on Foata normal form. 2/887 useless extension candidates. Maximal degree in co-relation 5942. Up to 850 conditions per place. [2024-06-28 00:02:24,236 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 192 selfloop transitions, 17 changer transitions 0/211 dead transitions. [2024-06-28 00:02:24,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 211 transitions, 2876 flow [2024-06-28 00:02:24,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:02:24,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:02:24,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 100 transitions. [2024-06-28 00:02:24,237 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2932551319648094 [2024-06-28 00:02:24,237 INFO L175 Difference]: Start difference. First operand has 236 places, 201 transitions, 2436 flow. Second operand 11 states and 100 transitions. [2024-06-28 00:02:24,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 211 transitions, 2876 flow [2024-06-28 00:02:24,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 211 transitions, 2766 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-28 00:02:24,335 INFO L231 Difference]: Finished difference. Result has 239 places, 201 transitions, 2364 flow [2024-06-28 00:02:24,335 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2326, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2364, PETRI_PLACES=239, PETRI_TRANSITIONS=201} [2024-06-28 00:02:24,335 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 209 predicate places. [2024-06-28 00:02:24,335 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 201 transitions, 2364 flow [2024-06-28 00:02:24,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:24,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:24,335 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:24,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 00:02:24,336 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)] === [2024-06-28 00:02:24,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:24,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1659289175, now seen corresponding path program 1 times [2024-06-28 00:02:24,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:24,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770311075] [2024-06-28 00:02:24,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:24,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:24,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:25,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:25,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:25,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770311075] [2024-06-28 00:02:25,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770311075] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:25,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:25,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:02:25,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510849220] [2024-06-28 00:02:25,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:25,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:02:25,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:25,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:02:25,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:02:25,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:02:25,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 201 transitions, 2364 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:25,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:25,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:02:25,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:25,989 INFO L124 PetriNetUnfolderBase]: 491/894 cut-off events. [2024-06-28 00:02:25,989 INFO L125 PetriNetUnfolderBase]: For 44873/44873 co-relation queries the response was YES. [2024-06-28 00:02:25,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6073 conditions, 894 events. 491/894 cut-off events. For 44873/44873 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4433 event pairs, 101 based on Foata normal form. 2/896 useless extension candidates. Maximal degree in co-relation 5973. Up to 794 conditions per place. [2024-06-28 00:02:25,998 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 178 selfloop transitions, 42 changer transitions 0/222 dead transitions. [2024-06-28 00:02:25,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 222 transitions, 2941 flow [2024-06-28 00:02:25,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:02:25,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:02:25,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-28 00:02:25,999 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34516129032258064 [2024-06-28 00:02:25,999 INFO L175 Difference]: Start difference. First operand has 239 places, 201 transitions, 2364 flow. Second operand 10 states and 107 transitions. [2024-06-28 00:02:25,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 222 transitions, 2941 flow [2024-06-28 00:02:26,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 222 transitions, 2901 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-28 00:02:26,116 INFO L231 Difference]: Finished difference. Result has 241 places, 208 transitions, 2541 flow [2024-06-28 00:02:26,117 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2324, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2541, PETRI_PLACES=241, PETRI_TRANSITIONS=208} [2024-06-28 00:02:26,117 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 211 predicate places. [2024-06-28 00:02:26,117 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 208 transitions, 2541 flow [2024-06-28 00:02:26,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:26,117 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:26,117 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:26,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 00:02:26,118 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)] === [2024-06-28 00:02:26,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:26,118 INFO L85 PathProgramCache]: Analyzing trace with hash -1363158796, now seen corresponding path program 1 times [2024-06-28 00:02:26,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:26,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429981735] [2024-06-28 00:02:26,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:26,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:26,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:27,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:27,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:27,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429981735] [2024-06-28 00:02:27,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429981735] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:27,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:27,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:02:27,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677723048] [2024-06-28 00:02:27,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:27,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:02:27,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:27,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:02:27,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:02:27,603 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:02:27,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 208 transitions, 2541 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) [2024-06-28 00:02:27,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:27,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:02:27,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:27,861 INFO L124 PetriNetUnfolderBase]: 503/915 cut-off events. [2024-06-28 00:02:27,861 INFO L125 PetriNetUnfolderBase]: For 49049/49049 co-relation queries the response was YES. [2024-06-28 00:02:27,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6452 conditions, 915 events. 503/915 cut-off events. For 49049/49049 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4572 event pairs, 67 based on Foata normal form. 2/917 useless extension candidates. Maximal degree in co-relation 6350. Up to 772 conditions per place. [2024-06-28 00:02:27,870 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 177 selfloop transitions, 51 changer transitions 0/230 dead transitions. [2024-06-28 00:02:27,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 230 transitions, 3263 flow [2024-06-28 00:02:27,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:02:27,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:02:27,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2024-06-28 00:02:27,871 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3978494623655914 [2024-06-28 00:02:27,871 INFO L175 Difference]: Start difference. First operand has 241 places, 208 transitions, 2541 flow. Second operand 9 states and 111 transitions. [2024-06-28 00:02:27,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 230 transitions, 3263 flow [2024-06-28 00:02:27,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 230 transitions, 3151 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-06-28 00:02:27,992 INFO L231 Difference]: Finished difference. Result has 246 places, 215 transitions, 2668 flow [2024-06-28 00:02:27,992 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2429, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2668, PETRI_PLACES=246, PETRI_TRANSITIONS=215} [2024-06-28 00:02:27,992 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 216 predicate places. [2024-06-28 00:02:27,993 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 215 transitions, 2668 flow [2024-06-28 00:02:27,993 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) [2024-06-28 00:02:27,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:27,993 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:27,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 00:02:27,993 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)] === [2024-06-28 00:02:27,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:27,993 INFO L85 PathProgramCache]: Analyzing trace with hash -401025443, now seen corresponding path program 2 times [2024-06-28 00:02:27,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:27,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187641385] [2024-06-28 00:02:27,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:27,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:28,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:29,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:29,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:29,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187641385] [2024-06-28 00:02:29,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187641385] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:29,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:29,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:02:29,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329162334] [2024-06-28 00:02:29,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:29,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:02:29,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:29,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:02:29,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:02:29,177 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:02:29,177 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 215 transitions, 2668 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:29,177 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:29,177 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:02:29,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:29,535 INFO L124 PetriNetUnfolderBase]: 504/916 cut-off events. [2024-06-28 00:02:29,535 INFO L125 PetriNetUnfolderBase]: For 49600/49600 co-relation queries the response was YES. [2024-06-28 00:02:29,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6573 conditions, 916 events. 504/916 cut-off events. For 49600/49600 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4571 event pairs, 65 based on Foata normal form. 2/918 useless extension candidates. Maximal degree in co-relation 6469. Up to 824 conditions per place. [2024-06-28 00:02:29,544 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 192 selfloop transitions, 37 changer transitions 0/231 dead transitions. [2024-06-28 00:02:29,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 231 transitions, 3220 flow [2024-06-28 00:02:29,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:02:29,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:02:29,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-28 00:02:29,545 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36917562724014336 [2024-06-28 00:02:29,545 INFO L175 Difference]: Start difference. First operand has 246 places, 215 transitions, 2668 flow. Second operand 9 states and 103 transitions. [2024-06-28 00:02:29,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 231 transitions, 3220 flow [2024-06-28 00:02:29,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 231 transitions, 3152 flow, removed 27 selfloop flow, removed 2 redundant places. [2024-06-28 00:02:29,700 INFO L231 Difference]: Finished difference. Result has 254 places, 218 transitions, 2757 flow [2024-06-28 00:02:29,700 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2614, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2757, PETRI_PLACES=254, PETRI_TRANSITIONS=218} [2024-06-28 00:02:29,701 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 224 predicate places. [2024-06-28 00:02:29,701 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 218 transitions, 2757 flow [2024-06-28 00:02:29,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:29,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:29,701 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:29,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 00:02:29,702 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)] === [2024-06-28 00:02:29,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:29,703 INFO L85 PathProgramCache]: Analyzing trace with hash -411722027, now seen corresponding path program 3 times [2024-06-28 00:02:29,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:29,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670073105] [2024-06-28 00:02:29,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:29,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:29,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:31,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:31,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:31,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670073105] [2024-06-28 00:02:31,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670073105] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:31,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:31,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:02:31,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222731639] [2024-06-28 00:02:31,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:31,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:02:31,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:31,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:02:31,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:02:31,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:02:31,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 218 transitions, 2757 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:31,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:31,192 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:02:31,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:31,705 INFO L124 PetriNetUnfolderBase]: 515/934 cut-off events. [2024-06-28 00:02:31,705 INFO L125 PetriNetUnfolderBase]: For 52048/52048 co-relation queries the response was YES. [2024-06-28 00:02:31,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6835 conditions, 934 events. 515/934 cut-off events. For 52048/52048 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 4664 event pairs, 69 based on Foata normal form. 1/935 useless extension candidates. Maximal degree in co-relation 6728. Up to 752 conditions per place. [2024-06-28 00:02:31,714 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 177 selfloop transitions, 59 changer transitions 0/238 dead transitions. [2024-06-28 00:02:31,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 238 transitions, 3509 flow [2024-06-28 00:02:31,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:02:31,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:02:31,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-28 00:02:31,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36451612903225805 [2024-06-28 00:02:31,716 INFO L175 Difference]: Start difference. First operand has 254 places, 218 transitions, 2757 flow. Second operand 10 states and 113 transitions. [2024-06-28 00:02:31,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 238 transitions, 3509 flow [2024-06-28 00:02:31,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 238 transitions, 3412 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-28 00:02:31,854 INFO L231 Difference]: Finished difference. Result has 260 places, 225 transitions, 2936 flow [2024-06-28 00:02:31,855 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2660, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2936, PETRI_PLACES=260, PETRI_TRANSITIONS=225} [2024-06-28 00:02:31,855 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 230 predicate places. [2024-06-28 00:02:31,855 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 225 transitions, 2936 flow [2024-06-28 00:02:31,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:31,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:31,856 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:31,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 00:02:31,856 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)] === [2024-06-28 00:02:31,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:31,856 INFO L85 PathProgramCache]: Analyzing trace with hash -411572080, now seen corresponding path program 2 times [2024-06-28 00:02:31,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:31,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564719072] [2024-06-28 00:02:31,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:31,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:31,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:33,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:33,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:33,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564719072] [2024-06-28 00:02:33,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564719072] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:33,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:33,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:02:33,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130487809] [2024-06-28 00:02:33,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:33,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:02:33,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:33,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:02:33,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:02:33,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:02:33,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 225 transitions, 2936 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) [2024-06-28 00:02:33,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:33,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:02:33,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:33,703 INFO L124 PetriNetUnfolderBase]: 550/991 cut-off events. [2024-06-28 00:02:33,704 INFO L125 PetriNetUnfolderBase]: For 65469/65469 co-relation queries the response was YES. [2024-06-28 00:02:33,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7714 conditions, 991 events. 550/991 cut-off events. For 65469/65469 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 4980 event pairs, 68 based on Foata normal form. 2/993 useless extension candidates. Maximal degree in co-relation 7604. Up to 657 conditions per place. [2024-06-28 00:02:33,719 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 179 selfloop transitions, 73 changer transitions 0/254 dead transitions. [2024-06-28 00:02:33,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 254 transitions, 4084 flow [2024-06-28 00:02:33,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:02:33,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:02:33,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 119 transitions. [2024-06-28 00:02:33,720 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4265232974910394 [2024-06-28 00:02:33,720 INFO L175 Difference]: Start difference. First operand has 260 places, 225 transitions, 2936 flow. Second operand 9 states and 119 transitions. [2024-06-28 00:02:33,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 254 transitions, 4084 flow [2024-06-28 00:02:33,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 254 transitions, 3931 flow, removed 46 selfloop flow, removed 6 redundant places. [2024-06-28 00:02:33,887 INFO L231 Difference]: Finished difference. Result has 266 places, 236 transitions, 3153 flow [2024-06-28 00:02:33,888 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2799, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3153, PETRI_PLACES=266, PETRI_TRANSITIONS=236} [2024-06-28 00:02:33,888 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 236 predicate places. [2024-06-28 00:02:33,888 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 236 transitions, 3153 flow [2024-06-28 00:02:33,888 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) [2024-06-28 00:02:33,888 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:33,888 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:33,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 00:02:33,889 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)] === [2024-06-28 00:02:33,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:33,889 INFO L85 PathProgramCache]: Analyzing trace with hash 1693647133, now seen corresponding path program 4 times [2024-06-28 00:02:33,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:33,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018168743] [2024-06-28 00:02:33,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:33,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:33,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:35,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:35,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:35,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018168743] [2024-06-28 00:02:35,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018168743] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:35,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:35,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:02:35,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182205129] [2024-06-28 00:02:35,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:35,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:02:35,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:35,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:02:35,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:02:35,442 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:02:35,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 236 transitions, 3153 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:35,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:35,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:02:35,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:35,757 INFO L124 PetriNetUnfolderBase]: 553/996 cut-off events. [2024-06-28 00:02:35,758 INFO L125 PetriNetUnfolderBase]: For 63760/63760 co-relation queries the response was YES. [2024-06-28 00:02:35,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7911 conditions, 996 events. 553/996 cut-off events. For 63760/63760 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 5014 event pairs, 66 based on Foata normal form. 1/997 useless extension candidates. Maximal degree in co-relation 7798. Up to 861 conditions per place. [2024-06-28 00:02:35,769 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 189 selfloop transitions, 60 changer transitions 0/251 dead transitions. [2024-06-28 00:02:35,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 251 transitions, 3718 flow [2024-06-28 00:02:35,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:02:35,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:02:35,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-28 00:02:35,770 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36129032258064514 [2024-06-28 00:02:35,770 INFO L175 Difference]: Start difference. First operand has 266 places, 236 transitions, 3153 flow. Second operand 10 states and 112 transitions. [2024-06-28 00:02:35,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 251 transitions, 3718 flow [2024-06-28 00:02:35,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 251 transitions, 3638 flow, removed 30 selfloop flow, removed 2 redundant places. [2024-06-28 00:02:35,994 INFO L231 Difference]: Finished difference. Result has 274 places, 238 transitions, 3237 flow [2024-06-28 00:02:35,995 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3073, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3237, PETRI_PLACES=274, PETRI_TRANSITIONS=238} [2024-06-28 00:02:35,997 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 244 predicate places. [2024-06-28 00:02:35,997 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 238 transitions, 3237 flow [2024-06-28 00:02:35,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:35,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:35,998 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:35,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 00:02:35,998 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)] === [2024-06-28 00:02:35,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:35,999 INFO L85 PathProgramCache]: Analyzing trace with hash -406209700, now seen corresponding path program 3 times [2024-06-28 00:02:36,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:36,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16837511] [2024-06-28 00:02:36,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:36,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:36,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:37,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:37,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:37,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16837511] [2024-06-28 00:02:37,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16837511] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:37,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:37,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:02:37,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856326877] [2024-06-28 00:02:37,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:37,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:02:37,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:37,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:02:37,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:02:37,567 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:02:37,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 238 transitions, 3237 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) [2024-06-28 00:02:37,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:37,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:02:37,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:37,890 INFO L124 PetriNetUnfolderBase]: 570/1024 cut-off events. [2024-06-28 00:02:37,890 INFO L125 PetriNetUnfolderBase]: For 70316/70316 co-relation queries the response was YES. [2024-06-28 00:02:37,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8234 conditions, 1024 events. 570/1024 cut-off events. For 70316/70316 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 5171 event pairs, 66 based on Foata normal form. 2/1026 useless extension candidates. Maximal degree in co-relation 8119. Up to 673 conditions per place. [2024-06-28 00:02:37,902 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 172 selfloop transitions, 90 changer transitions 0/264 dead transitions. [2024-06-28 00:02:37,902 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 264 transitions, 4386 flow [2024-06-28 00:02:37,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:02:37,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:02:37,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-28 00:02:37,903 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4229390681003584 [2024-06-28 00:02:37,903 INFO L175 Difference]: Start difference. First operand has 274 places, 238 transitions, 3237 flow. Second operand 9 states and 118 transitions. [2024-06-28 00:02:37,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 264 transitions, 4386 flow [2024-06-28 00:02:38,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 264 transitions, 4247 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-28 00:02:38,104 INFO L231 Difference]: Finished difference. Result has 276 places, 246 transitions, 3440 flow [2024-06-28 00:02:38,105 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3098, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3440, PETRI_PLACES=276, PETRI_TRANSITIONS=246} [2024-06-28 00:02:38,105 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 246 predicate places. [2024-06-28 00:02:38,105 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 246 transitions, 3440 flow [2024-06-28 00:02:38,105 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) [2024-06-28 00:02:38,106 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:38,106 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:38,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 00:02:38,106 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)] === [2024-06-28 00:02:38,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:38,106 INFO L85 PathProgramCache]: Analyzing trace with hash -406215497, now seen corresponding path program 5 times [2024-06-28 00:02:38,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:38,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529087528] [2024-06-28 00:02:38,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:38,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:38,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:39,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:39,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:39,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529087528] [2024-06-28 00:02:39,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529087528] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:39,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:39,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:02:39,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476788550] [2024-06-28 00:02:39,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:39,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:02:39,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:39,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:02:39,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:02:39,744 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:02:39,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 246 transitions, 3440 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:39,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:39,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:02:39,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:40,169 INFO L124 PetriNetUnfolderBase]: 568/1021 cut-off events. [2024-06-28 00:02:40,169 INFO L125 PetriNetUnfolderBase]: For 69344/69344 co-relation queries the response was YES. [2024-06-28 00:02:40,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8292 conditions, 1021 events. 568/1021 cut-off events. For 69344/69344 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 5155 event pairs, 69 based on Foata normal form. 1/1022 useless extension candidates. Maximal degree in co-relation 8175. Up to 876 conditions per place. [2024-06-28 00:02:40,180 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 193 selfloop transitions, 66 changer transitions 0/261 dead transitions. [2024-06-28 00:02:40,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 261 transitions, 4120 flow [2024-06-28 00:02:40,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:02:40,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:02:40,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-28 00:02:40,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35777126099706746 [2024-06-28 00:02:40,182 INFO L175 Difference]: Start difference. First operand has 276 places, 246 transitions, 3440 flow. Second operand 11 states and 122 transitions. [2024-06-28 00:02:40,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 261 transitions, 4120 flow [2024-06-28 00:02:40,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 261 transitions, 4001 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-28 00:02:40,387 INFO L231 Difference]: Finished difference. Result has 282 places, 246 transitions, 3461 flow [2024-06-28 00:02:40,387 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3321, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3461, PETRI_PLACES=282, PETRI_TRANSITIONS=246} [2024-06-28 00:02:40,388 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 252 predicate places. [2024-06-28 00:02:40,388 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 246 transitions, 3461 flow [2024-06-28 00:02:40,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:40,388 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:40,388 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:40,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 00:02:40,388 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)] === [2024-06-28 00:02:40,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:40,388 INFO L85 PathProgramCache]: Analyzing trace with hash -406007890, now seen corresponding path program 4 times [2024-06-28 00:02:40,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:40,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957791273] [2024-06-28 00:02:40,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:40,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:40,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:41,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:41,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:41,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957791273] [2024-06-28 00:02:41,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957791273] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:41,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:41,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:02:41,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098173430] [2024-06-28 00:02:41,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:41,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:02:41,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:41,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:02:41,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:02:41,920 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:02:41,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 246 transitions, 3461 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) [2024-06-28 00:02:41,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:41,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:02:41,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:42,255 INFO L124 PetriNetUnfolderBase]: 575/1033 cut-off events. [2024-06-28 00:02:42,255 INFO L125 PetriNetUnfolderBase]: For 73338/73338 co-relation queries the response was YES. [2024-06-28 00:02:42,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8345 conditions, 1033 events. 575/1033 cut-off events. For 73338/73338 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 5240 event pairs, 66 based on Foata normal form. 2/1035 useless extension candidates. Maximal degree in co-relation 8229. Up to 680 conditions per place. [2024-06-28 00:02:42,265 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 158 selfloop transitions, 105 changer transitions 0/265 dead transitions. [2024-06-28 00:02:42,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 265 transitions, 4387 flow [2024-06-28 00:02:42,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:02:42,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:02:42,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-28 00:02:42,266 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4157706093189964 [2024-06-28 00:02:42,267 INFO L175 Difference]: Start difference. First operand has 282 places, 246 transitions, 3461 flow. Second operand 9 states and 116 transitions. [2024-06-28 00:02:42,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 265 transitions, 4387 flow [2024-06-28 00:02:42,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 265 transitions, 4239 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-28 00:02:42,500 INFO L231 Difference]: Finished difference. Result has 284 places, 249 transitions, 3597 flow [2024-06-28 00:02:42,500 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3313, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3597, PETRI_PLACES=284, PETRI_TRANSITIONS=249} [2024-06-28 00:02:42,500 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 254 predicate places. [2024-06-28 00:02:42,501 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 249 transitions, 3597 flow [2024-06-28 00:02:42,501 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) [2024-06-28 00:02:42,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:42,501 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:42,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 00:02:42,501 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)] === [2024-06-28 00:02:42,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:42,501 INFO L85 PathProgramCache]: Analyzing trace with hash -406008107, now seen corresponding path program 6 times [2024-06-28 00:02:42,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:42,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112210844] [2024-06-28 00:02:42,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:42,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:42,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:44,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:44,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:44,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112210844] [2024-06-28 00:02:44,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112210844] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:44,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:44,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:02:44,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393373608] [2024-06-28 00:02:44,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:44,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:02:44,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:44,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:02:44,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:02:44,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:02:44,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 249 transitions, 3597 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:44,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:44,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:02:44,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:44,509 INFO L124 PetriNetUnfolderBase]: 573/1030 cut-off events. [2024-06-28 00:02:44,509 INFO L125 PetriNetUnfolderBase]: For 72069/72069 co-relation queries the response was YES. [2024-06-28 00:02:44,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8417 conditions, 1030 events. 573/1030 cut-off events. For 72069/72069 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 5236 event pairs, 65 based on Foata normal form. 1/1031 useless extension candidates. Maximal degree in co-relation 8299. Up to 895 conditions per place. [2024-06-28 00:02:44,521 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 194 selfloop transitions, 66 changer transitions 0/262 dead transitions. [2024-06-28 00:02:44,521 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 262 transitions, 4149 flow [2024-06-28 00:02:44,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:02:44,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:02:44,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-28 00:02:44,522 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36129032258064514 [2024-06-28 00:02:44,522 INFO L175 Difference]: Start difference. First operand has 284 places, 249 transitions, 3597 flow. Second operand 10 states and 112 transitions. [2024-06-28 00:02:44,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 262 transitions, 4149 flow [2024-06-28 00:02:44,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 262 transitions, 3923 flow, removed 33 selfloop flow, removed 6 redundant places. [2024-06-28 00:02:44,743 INFO L231 Difference]: Finished difference. Result has 288 places, 249 transitions, 3508 flow [2024-06-28 00:02:44,743 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3371, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3508, PETRI_PLACES=288, PETRI_TRANSITIONS=249} [2024-06-28 00:02:44,744 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 258 predicate places. [2024-06-28 00:02:44,744 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 249 transitions, 3508 flow [2024-06-28 00:02:44,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:44,744 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:44,744 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:44,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-28 00:02:44,744 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)] === [2024-06-28 00:02:44,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:44,745 INFO L85 PathProgramCache]: Analyzing trace with hash -406000450, now seen corresponding path program 5 times [2024-06-28 00:02:44,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:44,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251569349] [2024-06-28 00:02:44,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:44,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:44,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:46,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:46,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:46,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251569349] [2024-06-28 00:02:46,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251569349] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:46,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:46,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:02:46,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345388228] [2024-06-28 00:02:46,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:46,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:02:46,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:46,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:02:46,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:02:46,341 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:02:46,341 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 249 transitions, 3508 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) [2024-06-28 00:02:46,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:46,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:02:46,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:46,651 INFO L124 PetriNetUnfolderBase]: 569/1024 cut-off events. [2024-06-28 00:02:46,651 INFO L125 PetriNetUnfolderBase]: For 71098/71098 co-relation queries the response was YES. [2024-06-28 00:02:46,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8084 conditions, 1024 events. 569/1024 cut-off events. For 71098/71098 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 5192 event pairs, 65 based on Foata normal form. 2/1026 useless extension candidates. Maximal degree in co-relation 7967. Up to 676 conditions per place. [2024-06-28 00:02:46,662 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 139 selfloop transitions, 124 changer transitions 0/265 dead transitions. [2024-06-28 00:02:46,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 265 transitions, 4384 flow [2024-06-28 00:02:46,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:02:46,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:02:46,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 115 transitions. [2024-06-28 00:02:46,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4121863799283154 [2024-06-28 00:02:46,668 INFO L175 Difference]: Start difference. First operand has 288 places, 249 transitions, 3508 flow. Second operand 9 states and 115 transitions. [2024-06-28 00:02:46,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 265 transitions, 4384 flow [2024-06-28 00:02:46,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 265 transitions, 4245 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-28 00:02:46,882 INFO L231 Difference]: Finished difference. Result has 289 places, 250 transitions, 3642 flow [2024-06-28 00:02:46,882 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3373, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3642, PETRI_PLACES=289, PETRI_TRANSITIONS=250} [2024-06-28 00:02:46,882 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 259 predicate places. [2024-06-28 00:02:46,882 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 250 transitions, 3642 flow [2024-06-28 00:02:46,883 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) [2024-06-28 00:02:46,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:46,883 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:46,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-28 00:02:46,883 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)] === [2024-06-28 00:02:46,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:46,883 INFO L85 PathProgramCache]: Analyzing trace with hash -406000171, now seen corresponding path program 1 times [2024-06-28 00:02:46,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:46,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755876155] [2024-06-28 00:02:46,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:46,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:46,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:48,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:48,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:48,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755876155] [2024-06-28 00:02:48,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755876155] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:48,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:48,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:02:48,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734094633] [2024-06-28 00:02:48,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:48,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:02:48,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:48,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:02:48,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:02:48,873 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:02:48,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 250 transitions, 3642 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) [2024-06-28 00:02:48,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:48,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:02:48,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:49,212 INFO L124 PetriNetUnfolderBase]: 572/1029 cut-off events. [2024-06-28 00:02:49,212 INFO L125 PetriNetUnfolderBase]: For 69446/69446 co-relation queries the response was YES. [2024-06-28 00:02:49,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8268 conditions, 1029 events. 572/1029 cut-off events. For 69446/69446 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 5240 event pairs, 117 based on Foata normal form. 1/1030 useless extension candidates. Maximal degree in co-relation 8150. Up to 979 conditions per place. [2024-06-28 00:02:49,225 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 235 selfloop transitions, 26 changer transitions 0/263 dead transitions. [2024-06-28 00:02:49,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 263 transitions, 4214 flow [2024-06-28 00:02:49,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:02:49,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:02:49,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-28 00:02:49,226 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34838709677419355 [2024-06-28 00:02:49,226 INFO L175 Difference]: Start difference. First operand has 289 places, 250 transitions, 3642 flow. Second operand 10 states and 108 transitions. [2024-06-28 00:02:49,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 263 transitions, 4214 flow [2024-06-28 00:02:49,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 263 transitions, 4042 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-28 00:02:49,438 INFO L231 Difference]: Finished difference. Result has 294 places, 252 transitions, 3555 flow [2024-06-28 00:02:49,439 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3470, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3555, PETRI_PLACES=294, PETRI_TRANSITIONS=252} [2024-06-28 00:02:49,439 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 264 predicate places. [2024-06-28 00:02:49,439 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 252 transitions, 3555 flow [2024-06-28 00:02:49,440 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) [2024-06-28 00:02:49,440 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:49,440 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:49,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-28 00:02:49,440 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)] === [2024-06-28 00:02:49,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:49,441 INFO L85 PathProgramCache]: Analyzing trace with hash 1045025741, now seen corresponding path program 7 times [2024-06-28 00:02:49,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:49,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076574442] [2024-06-28 00:02:49,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:49,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:49,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:50,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:50,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:50,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076574442] [2024-06-28 00:02:50,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076574442] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:50,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:50,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:02:50,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579072638] [2024-06-28 00:02:50,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:50,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:02:50,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:50,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:02:50,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:02:50,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:02:50,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 252 transitions, 3555 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:50,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:50,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:02:50,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:51,231 INFO L124 PetriNetUnfolderBase]: 567/1021 cut-off events. [2024-06-28 00:02:51,231 INFO L125 PetriNetUnfolderBase]: For 68555/68555 co-relation queries the response was YES. [2024-06-28 00:02:51,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7970 conditions, 1021 events. 567/1021 cut-off events. For 68555/68555 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 5198 event pairs, 66 based on Foata normal form. 2/1023 useless extension candidates. Maximal degree in co-relation 7850. Up to 929 conditions per place. [2024-06-28 00:02:51,241 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 222 selfloop transitions, 38 changer transitions 0/262 dead transitions. [2024-06-28 00:02:51,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 262 transitions, 4101 flow [2024-06-28 00:02:51,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:02:51,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:02:51,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-28 00:02:51,242 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-28 00:02:51,242 INFO L175 Difference]: Start difference. First operand has 294 places, 252 transitions, 3555 flow. Second operand 10 states and 105 transitions. [2024-06-28 00:02:51,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 262 transitions, 4101 flow [2024-06-28 00:02:51,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 262 transitions, 4014 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-28 00:02:51,461 INFO L231 Difference]: Finished difference. Result has 296 places, 252 transitions, 3554 flow [2024-06-28 00:02:51,461 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3468, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3554, PETRI_PLACES=296, PETRI_TRANSITIONS=252} [2024-06-28 00:02:51,462 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 266 predicate places. [2024-06-28 00:02:51,462 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 252 transitions, 3554 flow [2024-06-28 00:02:51,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:51,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:51,462 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:51,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-28 00:02:51,463 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)] === [2024-06-28 00:02:51,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:51,463 INFO L85 PathProgramCache]: Analyzing trace with hash 416490445, now seen corresponding path program 8 times [2024-06-28 00:02:51,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:51,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713442386] [2024-06-28 00:02:51,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:51,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:51,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:52,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:52,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:52,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713442386] [2024-06-28 00:02:52,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713442386] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:52,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:52,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:02:52,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122673758] [2024-06-28 00:02:52,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:52,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:02:52,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:52,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:02:52,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:02:52,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:02:52,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 252 transitions, 3554 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:52,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:52,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:02:52,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:53,333 INFO L124 PetriNetUnfolderBase]: 564/1016 cut-off events. [2024-06-28 00:02:53,334 INFO L125 PetriNetUnfolderBase]: For 66073/66073 co-relation queries the response was YES. [2024-06-28 00:02:53,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7892 conditions, 1016 events. 564/1016 cut-off events. For 66073/66073 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 5185 event pairs, 66 based on Foata normal form. 1/1017 useless extension candidates. Maximal degree in co-relation 7771. Up to 871 conditions per place. [2024-06-28 00:02:53,344 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 201 selfloop transitions, 59 changer transitions 0/262 dead transitions. [2024-06-28 00:02:53,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 262 transitions, 4234 flow [2024-06-28 00:02:53,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:02:53,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:02:53,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-28 00:02:53,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 00:02:53,345 INFO L175 Difference]: Start difference. First operand has 296 places, 252 transitions, 3554 flow. Second operand 10 states and 110 transitions. [2024-06-28 00:02:53,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 262 transitions, 4234 flow [2024-06-28 00:02:53,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 262 transitions, 4116 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-28 00:02:53,550 INFO L231 Difference]: Finished difference. Result has 297 places, 252 transitions, 3560 flow [2024-06-28 00:02:53,550 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3436, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3560, PETRI_PLACES=297, PETRI_TRANSITIONS=252} [2024-06-28 00:02:53,550 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 267 predicate places. [2024-06-28 00:02:53,551 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 252 transitions, 3560 flow [2024-06-28 00:02:53,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:53,551 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:53,551 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:53,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-28 00:02:53,551 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)] === [2024-06-28 00:02:53,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:53,552 INFO L85 PathProgramCache]: Analyzing trace with hash 416288635, now seen corresponding path program 9 times [2024-06-28 00:02:53,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:53,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243663254] [2024-06-28 00:02:53,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:53,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:53,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:54,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:54,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:54,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243663254] [2024-06-28 00:02:54,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243663254] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:54,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:54,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:02:54,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601817456] [2024-06-28 00:02:54,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:54,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:02:54,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:54,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:02:54,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:02:54,902 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:02:54,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 252 transitions, 3560 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:54,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:54,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:02:54,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:55,249 INFO L124 PetriNetUnfolderBase]: 561/1011 cut-off events. [2024-06-28 00:02:55,249 INFO L125 PetriNetUnfolderBase]: For 65263/65263 co-relation queries the response was YES. [2024-06-28 00:02:55,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7807 conditions, 1011 events. 561/1011 cut-off events. For 65263/65263 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 5142 event pairs, 68 based on Foata normal form. 1/1012 useless extension candidates. Maximal degree in co-relation 7688. Up to 867 conditions per place. [2024-06-28 00:02:55,260 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 206 selfloop transitions, 54 changer transitions 0/262 dead transitions. [2024-06-28 00:02:55,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 262 transitions, 4242 flow [2024-06-28 00:02:55,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:02:55,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:02:55,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-28 00:02:55,261 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3580645161290323 [2024-06-28 00:02:55,261 INFO L175 Difference]: Start difference. First operand has 297 places, 252 transitions, 3560 flow. Second operand 10 states and 111 transitions. [2024-06-28 00:02:55,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 262 transitions, 4242 flow [2024-06-28 00:02:55,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 262 transitions, 4049 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-06-28 00:02:55,516 INFO L231 Difference]: Finished difference. Result has 298 places, 252 transitions, 3484 flow [2024-06-28 00:02:55,516 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3369, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3484, PETRI_PLACES=298, PETRI_TRANSITIONS=252} [2024-06-28 00:02:55,516 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 268 predicate places. [2024-06-28 00:02:55,516 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 252 transitions, 3484 flow [2024-06-28 00:02:55,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:55,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:55,517 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:55,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-28 00:02:55,517 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)] === [2024-06-28 00:02:55,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:55,517 INFO L85 PathProgramCache]: Analyzing trace with hash 568215967, now seen corresponding path program 10 times [2024-06-28 00:02:55,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:55,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872074672] [2024-06-28 00:02:55,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:55,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:55,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:57,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:57,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:57,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872074672] [2024-06-28 00:02:57,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872074672] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:57,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:57,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:02:57,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252620085] [2024-06-28 00:02:57,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:57,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:02:57,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:57,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:02:57,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:02:57,103 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:02:57,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 252 transitions, 3484 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:57,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:57,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:02:57,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:57,691 INFO L124 PetriNetUnfolderBase]: 558/1006 cut-off events. [2024-06-28 00:02:57,692 INFO L125 PetriNetUnfolderBase]: For 62694/62694 co-relation queries the response was YES. [2024-06-28 00:02:57,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7621 conditions, 1006 events. 558/1006 cut-off events. For 62694/62694 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 5110 event pairs, 66 based on Foata normal form. 1/1007 useless extension candidates. Maximal degree in co-relation 7503. Up to 863 conditions per place. [2024-06-28 00:02:57,703 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 208 selfloop transitions, 51 changer transitions 0/261 dead transitions. [2024-06-28 00:02:57,703 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 261 transitions, 4024 flow [2024-06-28 00:02:57,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:02:57,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:02:57,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-28 00:02:57,704 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3580645161290323 [2024-06-28 00:02:57,704 INFO L175 Difference]: Start difference. First operand has 298 places, 252 transitions, 3484 flow. Second operand 10 states and 111 transitions. [2024-06-28 00:02:57,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 261 transitions, 4024 flow [2024-06-28 00:02:57,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 261 transitions, 3897 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-28 00:02:57,901 INFO L231 Difference]: Finished difference. Result has 299 places, 252 transitions, 3466 flow [2024-06-28 00:02:57,901 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3357, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3466, PETRI_PLACES=299, PETRI_TRANSITIONS=252} [2024-06-28 00:02:57,902 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 269 predicate places. [2024-06-28 00:02:57,902 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 252 transitions, 3466 flow [2024-06-28 00:02:57,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:57,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:57,902 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:57,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-28 00:02:57,903 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)] === [2024-06-28 00:02:57,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:57,903 INFO L85 PathProgramCache]: Analyzing trace with hash -743251607, now seen corresponding path program 11 times [2024-06-28 00:02:57,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:57,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97365720] [2024-06-28 00:02:57,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:57,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:57,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:59,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:59,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:59,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97365720] [2024-06-28 00:02:59,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97365720] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:59,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:59,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:02:59,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447273371] [2024-06-28 00:02:59,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:59,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:02:59,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:59,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:02:59,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:02:59,459 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:02:59,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 252 transitions, 3466 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:59,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:59,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:02:59,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:59,770 INFO L124 PetriNetUnfolderBase]: 564/1016 cut-off events. [2024-06-28 00:02:59,771 INFO L125 PetriNetUnfolderBase]: For 63023/63023 co-relation queries the response was YES. [2024-06-28 00:02:59,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7665 conditions, 1016 events. 564/1016 cut-off events. For 63023/63023 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 5179 event pairs, 71 based on Foata normal form. 1/1017 useless extension candidates. Maximal degree in co-relation 7547. Up to 662 conditions per place. [2024-06-28 00:02:59,796 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 159 selfloop transitions, 107 changer transitions 0/268 dead transitions. [2024-06-28 00:02:59,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 268 transitions, 4266 flow [2024-06-28 00:02:59,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:02:59,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:02:59,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-28 00:02:59,813 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36129032258064514 [2024-06-28 00:02:59,813 INFO L175 Difference]: Start difference. First operand has 299 places, 252 transitions, 3466 flow. Second operand 10 states and 112 transitions. [2024-06-28 00:02:59,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 268 transitions, 4266 flow [2024-06-28 00:03:00,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 268 transitions, 4093 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-28 00:03:00,045 INFO L231 Difference]: Finished difference. Result has 299 places, 259 transitions, 3655 flow [2024-06-28 00:03:00,045 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3295, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3655, PETRI_PLACES=299, PETRI_TRANSITIONS=259} [2024-06-28 00:03:00,046 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 269 predicate places. [2024-06-28 00:03:00,046 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 259 transitions, 3655 flow [2024-06-28 00:03:00,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:00,046 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:00,046 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:00,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-28 00:03:00,046 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)] === [2024-06-28 00:03:00,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:00,047 INFO L85 PathProgramCache]: Analyzing trace with hash -743251390, now seen corresponding path program 6 times [2024-06-28 00:03:00,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:00,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308057060] [2024-06-28 00:03:00,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:00,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:00,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:01,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:01,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:01,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308057060] [2024-06-28 00:03:01,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308057060] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:01,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:01,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:03:01,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390000290] [2024-06-28 00:03:01,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:01,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:03:01,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:01,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:03:01,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:03:01,680 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:03:01,680 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 259 transitions, 3655 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) [2024-06-28 00:03:01,680 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:01,680 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:03:01,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:02,044 INFO L124 PetriNetUnfolderBase]: 570/1026 cut-off events. [2024-06-28 00:03:02,044 INFO L125 PetriNetUnfolderBase]: For 65622/65622 co-relation queries the response was YES. [2024-06-28 00:03:02,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7908 conditions, 1026 events. 570/1026 cut-off events. For 65622/65622 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 5216 event pairs, 71 based on Foata normal form. 2/1028 useless extension candidates. Maximal degree in co-relation 7788. Up to 548 conditions per place. [2024-06-28 00:03:02,054 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 180 selfloop transitions, 95 changer transitions 0/277 dead transitions. [2024-06-28 00:03:02,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 277 transitions, 4617 flow [2024-06-28 00:03:02,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:03:02,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:03:02,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 120 transitions. [2024-06-28 00:03:02,056 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43010752688172044 [2024-06-28 00:03:02,056 INFO L175 Difference]: Start difference. First operand has 299 places, 259 transitions, 3655 flow. Second operand 9 states and 120 transitions. [2024-06-28 00:03:02,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 277 transitions, 4617 flow [2024-06-28 00:03:02,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 277 transitions, 4337 flow, removed 43 selfloop flow, removed 10 redundant places. [2024-06-28 00:03:02,277 INFO L231 Difference]: Finished difference. Result has 298 places, 263 transitions, 3631 flow [2024-06-28 00:03:02,277 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3383, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3631, PETRI_PLACES=298, PETRI_TRANSITIONS=263} [2024-06-28 00:03:02,277 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 268 predicate places. [2024-06-28 00:03:02,277 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 263 transitions, 3631 flow [2024-06-28 00:03:02,278 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) [2024-06-28 00:03:02,278 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:02,278 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:02,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-28 00:03:02,278 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)] === [2024-06-28 00:03:02,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:02,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1855898278, now seen corresponding path program 7 times [2024-06-28 00:03:02,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:02,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943823429] [2024-06-28 00:03:02,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:02,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:02,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:03,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:03,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:03,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943823429] [2024-06-28 00:03:03,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943823429] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:03,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:03,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:03:03,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538196237] [2024-06-28 00:03:03,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:03,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:03:03,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:03,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:03:03,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:03:04,030 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:03:04,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 263 transitions, 3631 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) [2024-06-28 00:03:04,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:04,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:03:04,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:04,288 INFO L124 PetriNetUnfolderBase]: 583/1047 cut-off events. [2024-06-28 00:03:04,288 INFO L125 PetriNetUnfolderBase]: For 67624/67624 co-relation queries the response was YES. [2024-06-28 00:03:04,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8109 conditions, 1047 events. 583/1047 cut-off events. For 67624/67624 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 5355 event pairs, 74 based on Foata normal form. 1/1048 useless extension candidates. Maximal degree in co-relation 7993. Up to 732 conditions per place. [2024-06-28 00:03:04,298 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 170 selfloop transitions, 117 changer transitions 0/289 dead transitions. [2024-06-28 00:03:04,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 289 transitions, 4846 flow [2024-06-28 00:03:04,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:03:04,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:03:04,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-28 00:03:04,299 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4229390681003584 [2024-06-28 00:03:04,300 INFO L175 Difference]: Start difference. First operand has 298 places, 263 transitions, 3631 flow. Second operand 9 states and 118 transitions. [2024-06-28 00:03:04,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 289 transitions, 4846 flow [2024-06-28 00:03:04,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 289 transitions, 4622 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-06-28 00:03:04,470 INFO L231 Difference]: Finished difference. Result has 302 places, 277 transitions, 3915 flow [2024-06-28 00:03:04,471 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3443, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3915, PETRI_PLACES=302, PETRI_TRANSITIONS=277} [2024-06-28 00:03:04,471 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 272 predicate places. [2024-06-28 00:03:04,471 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 277 transitions, 3915 flow [2024-06-28 00:03:04,471 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) [2024-06-28 00:03:04,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:04,471 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:04,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-28 00:03:04,472 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)] === [2024-06-28 00:03:04,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:04,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1126054738, now seen corresponding path program 8 times [2024-06-28 00:03:04,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:04,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731534033] [2024-06-28 00:03:04,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:04,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:04,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:06,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:06,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:06,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731534033] [2024-06-28 00:03:06,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731534033] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:06,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:06,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:03:06,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25438977] [2024-06-28 00:03:06,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:06,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:03:06,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:06,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:03:06,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:03:06,107 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:03:06,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 277 transitions, 3915 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) [2024-06-28 00:03:06,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:06,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:03:06,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:06,391 INFO L124 PetriNetUnfolderBase]: 595/1067 cut-off events. [2024-06-28 00:03:06,391 INFO L125 PetriNetUnfolderBase]: For 73376/73376 co-relation queries the response was YES. [2024-06-28 00:03:06,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8472 conditions, 1067 events. 595/1067 cut-off events. For 73376/73376 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 5465 event pairs, 73 based on Foata normal form. 2/1069 useless extension candidates. Maximal degree in co-relation 8354. Up to 570 conditions per place. [2024-06-28 00:03:06,402 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 148 selfloop transitions, 145 changer transitions 0/295 dead transitions. [2024-06-28 00:03:06,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 295 transitions, 4896 flow [2024-06-28 00:03:06,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:03:06,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:03:06,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-28 00:03:06,403 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4229390681003584 [2024-06-28 00:03:06,403 INFO L175 Difference]: Start difference. First operand has 302 places, 277 transitions, 3915 flow. Second operand 9 states and 118 transitions. [2024-06-28 00:03:06,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 295 transitions, 4896 flow [2024-06-28 00:03:06,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 295 transitions, 4753 flow, removed 24 selfloop flow, removed 3 redundant places. [2024-06-28 00:03:06,629 INFO L231 Difference]: Finished difference. Result has 309 places, 284 transitions, 4172 flow [2024-06-28 00:03:06,629 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3772, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4172, PETRI_PLACES=309, PETRI_TRANSITIONS=284} [2024-06-28 00:03:06,630 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 279 predicate places. [2024-06-28 00:03:06,630 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 284 transitions, 4172 flow [2024-06-28 00:03:06,630 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) [2024-06-28 00:03:06,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:06,630 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:06,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-28 00:03:06,630 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)] === [2024-06-28 00:03:06,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:06,631 INFO L85 PathProgramCache]: Analyzing trace with hash -536590231, now seen corresponding path program 2 times [2024-06-28 00:03:06,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:06,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77737704] [2024-06-28 00:03:06,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:06,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:06,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:08,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:08,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:08,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77737704] [2024-06-28 00:03:08,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77737704] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:08,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:08,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:03:08,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126004781] [2024-06-28 00:03:08,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:08,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:03:08,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:08,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:03:08,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:03:08,472 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:03:08,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 284 transitions, 4172 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) [2024-06-28 00:03:08,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:08,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:03:08,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:08,908 INFO L124 PetriNetUnfolderBase]: 610/1092 cut-off events. [2024-06-28 00:03:08,908 INFO L125 PetriNetUnfolderBase]: For 81207/81207 co-relation queries the response was YES. [2024-06-28 00:03:08,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8974 conditions, 1092 events. 610/1092 cut-off events. For 81207/81207 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 5595 event pairs, 72 based on Foata normal form. 3/1095 useless extension candidates. Maximal degree in co-relation 8853. Up to 576 conditions per place. [2024-06-28 00:03:08,922 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 151 selfloop transitions, 149 changer transitions 0/302 dead transitions. [2024-06-28 00:03:08,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 302 transitions, 5316 flow [2024-06-28 00:03:08,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:03:08,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:03:08,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-28 00:03:08,923 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4129032258064516 [2024-06-28 00:03:08,923 INFO L175 Difference]: Start difference. First operand has 309 places, 284 transitions, 4172 flow. Second operand 10 states and 128 transitions. [2024-06-28 00:03:08,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 302 transitions, 5316 flow [2024-06-28 00:03:09,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 302 transitions, 5196 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-28 00:03:09,276 INFO L231 Difference]: Finished difference. Result has 316 places, 289 transitions, 4436 flow [2024-06-28 00:03:09,277 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4054, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=144, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4436, PETRI_PLACES=316, PETRI_TRANSITIONS=289} [2024-06-28 00:03:09,277 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 286 predicate places. [2024-06-28 00:03:09,277 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 289 transitions, 4436 flow [2024-06-28 00:03:09,277 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) [2024-06-28 00:03:09,278 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:09,278 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:09,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-28 00:03:09,278 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)] === [2024-06-28 00:03:09,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:09,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1170578026, now seen corresponding path program 9 times [2024-06-28 00:03:09,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:09,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890692913] [2024-06-28 00:03:09,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:09,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:09,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:10,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:10,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:10,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890692913] [2024-06-28 00:03:10,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890692913] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:10,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:10,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:03:10,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690942140] [2024-06-28 00:03:10,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:10,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:03:10,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:10,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:03:10,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:03:10,985 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:03:10,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 289 transitions, 4436 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) [2024-06-28 00:03:10,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:10,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:03:10,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:11,374 INFO L124 PetriNetUnfolderBase]: 650/1157 cut-off events. [2024-06-28 00:03:11,374 INFO L125 PetriNetUnfolderBase]: For 96490/96490 co-relation queries the response was YES. [2024-06-28 00:03:11,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10100 conditions, 1157 events. 650/1157 cut-off events. For 96490/96490 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 5970 event pairs, 78 based on Foata normal form. 2/1159 useless extension candidates. Maximal degree in co-relation 9977. Up to 627 conditions per place. [2024-06-28 00:03:11,387 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 198 selfloop transitions, 121 changer transitions 0/321 dead transitions. [2024-06-28 00:03:11,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 321 transitions, 6008 flow [2024-06-28 00:03:11,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:03:11,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:03:11,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 125 transitions. [2024-06-28 00:03:11,389 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44802867383512546 [2024-06-28 00:03:11,389 INFO L175 Difference]: Start difference. First operand has 316 places, 289 transitions, 4436 flow. Second operand 9 states and 125 transitions. [2024-06-28 00:03:11,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 321 transitions, 6008 flow [2024-06-28 00:03:11,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 321 transitions, 5676 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-28 00:03:11,698 INFO L231 Difference]: Finished difference. Result has 321 places, 303 transitions, 4592 flow [2024-06-28 00:03:11,699 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4130, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4592, PETRI_PLACES=321, PETRI_TRANSITIONS=303} [2024-06-28 00:03:11,699 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 291 predicate places. [2024-06-28 00:03:11,699 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 303 transitions, 4592 flow [2024-06-28 00:03:11,699 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) [2024-06-28 00:03:11,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:11,699 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:11,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-28 00:03:11,699 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)] === [2024-06-28 00:03:11,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:11,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1170578243, now seen corresponding path program 12 times [2024-06-28 00:03:11,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:11,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092398491] [2024-06-28 00:03:11,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:11,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:11,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:12,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:12,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:12,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092398491] [2024-06-28 00:03:12,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092398491] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:12,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:12,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:03:12,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000109815] [2024-06-28 00:03:12,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:12,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:03:12,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:12,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:03:12,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:03:13,077 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:03:13,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 303 transitions, 4592 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:13,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:13,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:03:13,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:13,465 INFO L124 PetriNetUnfolderBase]: 647/1152 cut-off events. [2024-06-28 00:03:13,465 INFO L125 PetriNetUnfolderBase]: For 94230/94230 co-relation queries the response was YES. [2024-06-28 00:03:13,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9948 conditions, 1152 events. 647/1152 cut-off events. For 94230/94230 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 5959 event pairs, 76 based on Foata normal form. 1/1153 useless extension candidates. Maximal degree in co-relation 9823. Up to 790 conditions per place. [2024-06-28 00:03:13,475 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 198 selfloop transitions, 114 changer transitions 0/314 dead transitions. [2024-06-28 00:03:13,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 314 transitions, 5553 flow [2024-06-28 00:03:13,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:03:13,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:03:13,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-28 00:03:13,476 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-28 00:03:13,476 INFO L175 Difference]: Start difference. First operand has 321 places, 303 transitions, 4592 flow. Second operand 10 states and 115 transitions. [2024-06-28 00:03:13,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 314 transitions, 5553 flow [2024-06-28 00:03:13,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 314 transitions, 5352 flow, removed 12 selfloop flow, removed 3 redundant places. [2024-06-28 00:03:13,755 INFO L231 Difference]: Finished difference. Result has 328 places, 304 transitions, 4648 flow [2024-06-28 00:03:13,755 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4391, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4648, PETRI_PLACES=328, PETRI_TRANSITIONS=304} [2024-06-28 00:03:13,756 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 298 predicate places. [2024-06-28 00:03:13,756 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 304 transitions, 4648 flow [2024-06-28 00:03:13,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:13,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:13,756 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:13,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-28 00:03:13,756 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)] === [2024-06-28 00:03:13,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:13,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1599397768, now seen corresponding path program 10 times [2024-06-28 00:03:13,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:13,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932114669] [2024-06-28 00:03:13,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:13,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:13,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:15,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:15,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:15,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932114669] [2024-06-28 00:03:15,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932114669] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:15,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:15,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:03:15,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447137564] [2024-06-28 00:03:15,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:15,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:03:15,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:15,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:03:15,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:03:15,488 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:03:15,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 304 transitions, 4648 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) [2024-06-28 00:03:15,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:15,489 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:03:15,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:15,761 INFO L124 PetriNetUnfolderBase]: 650/1157 cut-off events. [2024-06-28 00:03:15,762 INFO L125 PetriNetUnfolderBase]: For 96796/96796 co-relation queries the response was YES. [2024-06-28 00:03:15,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10005 conditions, 1157 events. 650/1157 cut-off events. For 96796/96796 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 5979 event pairs, 73 based on Foata normal form. 1/1158 useless extension candidates. Maximal degree in co-relation 9878. Up to 837 conditions per place. [2024-06-28 00:03:15,774 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 209 selfloop transitions, 108 changer transitions 0/319 dead transitions. [2024-06-28 00:03:15,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 319 transitions, 5813 flow [2024-06-28 00:03:15,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:03:15,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:03:15,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-28 00:03:15,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4229390681003584 [2024-06-28 00:03:15,775 INFO L175 Difference]: Start difference. First operand has 328 places, 304 transitions, 4648 flow. Second operand 9 states and 118 transitions. [2024-06-28 00:03:15,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 319 transitions, 5813 flow [2024-06-28 00:03:16,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 319 transitions, 5576 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-28 00:03:16,186 INFO L231 Difference]: Finished difference. Result has 329 places, 307 transitions, 4699 flow [2024-06-28 00:03:16,186 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4417, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4699, PETRI_PLACES=329, PETRI_TRANSITIONS=307} [2024-06-28 00:03:16,187 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 299 predicate places. [2024-06-28 00:03:16,187 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 307 transitions, 4699 flow [2024-06-28 00:03:16,187 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) [2024-06-28 00:03:16,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:16,187 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:16,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-28 00:03:16,187 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)] === [2024-06-28 00:03:16,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:16,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1599398047, now seen corresponding path program 3 times [2024-06-28 00:03:16,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:16,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125407426] [2024-06-28 00:03:16,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:16,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:16,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:17,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:17,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:17,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125407426] [2024-06-28 00:03:17,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125407426] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:17,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:17,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:03:17,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655206144] [2024-06-28 00:03:17,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:17,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:03:17,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:17,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:03:17,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:03:17,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:03:17,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 307 transitions, 4699 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) [2024-06-28 00:03:17,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:17,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:03:17,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:18,316 INFO L124 PetriNetUnfolderBase]: 661/1176 cut-off events. [2024-06-28 00:03:18,316 INFO L125 PetriNetUnfolderBase]: For 101750/101750 co-relation queries the response was YES. [2024-06-28 00:03:18,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10127 conditions, 1176 events. 661/1176 cut-off events. For 101750/101750 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 6095 event pairs, 76 based on Foata normal form. 3/1179 useless extension candidates. Maximal degree in co-relation 10002. Up to 843 conditions per place. [2024-06-28 00:03:18,328 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 211 selfloop transitions, 110 changer transitions 0/323 dead transitions. [2024-06-28 00:03:18,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 323 transitions, 5879 flow [2024-06-28 00:03:18,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:03:18,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:03:18,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 120 transitions. [2024-06-28 00:03:18,329 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43010752688172044 [2024-06-28 00:03:18,329 INFO L175 Difference]: Start difference. First operand has 329 places, 307 transitions, 4699 flow. Second operand 9 states and 120 transitions. [2024-06-28 00:03:18,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 323 transitions, 5879 flow [2024-06-28 00:03:18,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 323 transitions, 5706 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-28 00:03:18,631 INFO L231 Difference]: Finished difference. Result has 333 places, 310 transitions, 4806 flow [2024-06-28 00:03:18,631 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4526, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4806, PETRI_PLACES=333, PETRI_TRANSITIONS=310} [2024-06-28 00:03:18,631 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 303 predicate places. [2024-06-28 00:03:18,631 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 310 transitions, 4806 flow [2024-06-28 00:03:18,632 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) [2024-06-28 00:03:18,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:18,632 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:18,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-28 00:03:18,632 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)] === [2024-06-28 00:03:18,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:18,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1170570307, now seen corresponding path program 4 times [2024-06-28 00:03:18,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:18,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824227311] [2024-06-28 00:03:18,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:18,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:18,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:20,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:20,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:20,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824227311] [2024-06-28 00:03:20,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824227311] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:20,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:20,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:03:20,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962254785] [2024-06-28 00:03:20,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:20,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:03:20,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:20,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:03:20,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:03:20,309 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:03:20,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 310 transitions, 4806 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) [2024-06-28 00:03:20,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:20,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:03:20,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:20,689 INFO L124 PetriNetUnfolderBase]: 672/1195 cut-off events. [2024-06-28 00:03:20,689 INFO L125 PetriNetUnfolderBase]: For 105674/105674 co-relation queries the response was YES. [2024-06-28 00:03:20,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10371 conditions, 1195 events. 672/1195 cut-off events. For 105674/105674 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 6213 event pairs, 71 based on Foata normal form. 3/1198 useless extension candidates. Maximal degree in co-relation 10245. Up to 857 conditions per place. [2024-06-28 00:03:20,702 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 222 selfloop transitions, 103 changer transitions 0/327 dead transitions. [2024-06-28 00:03:20,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 327 transitions, 6032 flow [2024-06-28 00:03:20,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:03:20,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:03:20,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 120 transitions. [2024-06-28 00:03:20,703 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43010752688172044 [2024-06-28 00:03:20,703 INFO L175 Difference]: Start difference. First operand has 333 places, 310 transitions, 4806 flow. Second operand 9 states and 120 transitions. [2024-06-28 00:03:20,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 327 transitions, 6032 flow [2024-06-28 00:03:20,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 327 transitions, 5836 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-28 00:03:20,979 INFO L231 Difference]: Finished difference. Result has 336 places, 314 transitions, 4910 flow [2024-06-28 00:03:20,979 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4611, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4910, PETRI_PLACES=336, PETRI_TRANSITIONS=314} [2024-06-28 00:03:20,979 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 306 predicate places. [2024-06-28 00:03:20,979 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 314 transitions, 4910 flow [2024-06-28 00:03:20,979 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) [2024-06-28 00:03:20,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:20,980 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:20,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-28 00:03:20,980 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)] === [2024-06-28 00:03:20,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:20,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1170570586, now seen corresponding path program 11 times [2024-06-28 00:03:20,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:20,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203231786] [2024-06-28 00:03:20,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:20,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:20,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:22,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:22,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:22,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203231786] [2024-06-28 00:03:22,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203231786] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:22,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:22,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:03:22,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675776371] [2024-06-28 00:03:22,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:22,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:03:22,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:22,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:03:22,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:03:22,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:03:22,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 314 transitions, 4910 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) [2024-06-28 00:03:22,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:22,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:03:22,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:22,818 INFO L124 PetriNetUnfolderBase]: 670/1192 cut-off events. [2024-06-28 00:03:22,818 INFO L125 PetriNetUnfolderBase]: For 100262/100262 co-relation queries the response was YES. [2024-06-28 00:03:22,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10302 conditions, 1192 events. 670/1192 cut-off events. For 100262/100262 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 6178 event pairs, 73 based on Foata normal form. 1/1193 useless extension candidates. Maximal degree in co-relation 10175. Up to 873 conditions per place. [2024-06-28 00:03:22,833 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 223 selfloop transitions, 102 changer transitions 0/327 dead transitions. [2024-06-28 00:03:22,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 327 transitions, 6069 flow [2024-06-28 00:03:22,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:03:22,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:03:22,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-28 00:03:22,834 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4229390681003584 [2024-06-28 00:03:22,834 INFO L175 Difference]: Start difference. First operand has 336 places, 314 transitions, 4910 flow. Second operand 9 states and 118 transitions. [2024-06-28 00:03:22,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 327 transitions, 6069 flow [2024-06-28 00:03:23,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 327 transitions, 5886 flow, removed 25 selfloop flow, removed 5 redundant places. [2024-06-28 00:03:23,173 INFO L231 Difference]: Finished difference. Result has 340 places, 315 transitions, 4963 flow [2024-06-28 00:03:23,173 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4730, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4963, PETRI_PLACES=340, PETRI_TRANSITIONS=315} [2024-06-28 00:03:23,174 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 310 predicate places. [2024-06-28 00:03:23,174 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 315 transitions, 4963 flow [2024-06-28 00:03:23,174 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) [2024-06-28 00:03:23,174 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:23,174 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:23,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-28 00:03:23,174 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)] === [2024-06-28 00:03:23,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:23,175 INFO L85 PathProgramCache]: Analyzing trace with hash 1855890621, now seen corresponding path program 13 times [2024-06-28 00:03:23,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:23,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957073112] [2024-06-28 00:03:23,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:23,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:23,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:24,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:24,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:24,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957073112] [2024-06-28 00:03:24,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957073112] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:24,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:24,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:03:24,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006175293] [2024-06-28 00:03:24,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:24,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:03:24,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:24,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:03:24,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:03:24,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:03:24,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 315 transitions, 4963 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:24,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:24,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:03:24,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:24,945 INFO L124 PetriNetUnfolderBase]: 667/1187 cut-off events. [2024-06-28 00:03:24,945 INFO L125 PetriNetUnfolderBase]: For 100220/100220 co-relation queries the response was YES. [2024-06-28 00:03:24,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10168 conditions, 1187 events. 667/1187 cut-off events. For 100220/100220 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 6159 event pairs, 74 based on Foata normal form. 1/1188 useless extension candidates. Maximal degree in co-relation 10040. Up to 826 conditions per place. [2024-06-28 00:03:24,958 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 170 selfloop transitions, 152 changer transitions 0/324 dead transitions. [2024-06-28 00:03:24,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 324 transitions, 5781 flow [2024-06-28 00:03:24,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:03:24,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:03:24,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-28 00:03:24,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 00:03:24,959 INFO L175 Difference]: Start difference. First operand has 340 places, 315 transitions, 4963 flow. Second operand 10 states and 110 transitions. [2024-06-28 00:03:24,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 324 transitions, 5781 flow [2024-06-28 00:03:25,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 324 transitions, 5557 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-28 00:03:25,326 INFO L231 Difference]: Finished difference. Result has 343 places, 315 transitions, 5049 flow [2024-06-28 00:03:25,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4739, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5049, PETRI_PLACES=343, PETRI_TRANSITIONS=315} [2024-06-28 00:03:25,326 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 313 predicate places. [2024-06-28 00:03:25,327 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 315 transitions, 5049 flow [2024-06-28 00:03:25,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:25,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:25,327 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:25,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-28 00:03:25,327 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)] === [2024-06-28 00:03:25,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:25,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1118904681, now seen corresponding path program 14 times [2024-06-28 00:03:25,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:25,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239544250] [2024-06-28 00:03:25,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:25,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:25,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:26,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:26,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:26,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239544250] [2024-06-28 00:03:26,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239544250] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:26,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:26,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:03:26,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639363805] [2024-06-28 00:03:26,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:26,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:03:26,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:26,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:03:26,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:03:27,075 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:03:27,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 315 transitions, 5049 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:27,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:27,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:03:27,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:27,470 INFO L124 PetriNetUnfolderBase]: 670/1192 cut-off events. [2024-06-28 00:03:27,471 INFO L125 PetriNetUnfolderBase]: For 102407/102407 co-relation queries the response was YES. [2024-06-28 00:03:27,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10312 conditions, 1192 events. 670/1192 cut-off events. For 102407/102407 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 6196 event pairs, 75 based on Foata normal form. 1/1193 useless extension candidates. Maximal degree in co-relation 10182. Up to 830 conditions per place. [2024-06-28 00:03:27,485 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 196 selfloop transitions, 129 changer transitions 0/327 dead transitions. [2024-06-28 00:03:27,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 327 transitions, 6075 flow [2024-06-28 00:03:27,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:03:27,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:03:27,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-28 00:03:27,486 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36774193548387096 [2024-06-28 00:03:27,486 INFO L175 Difference]: Start difference. First operand has 343 places, 315 transitions, 5049 flow. Second operand 10 states and 114 transitions. [2024-06-28 00:03:27,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 327 transitions, 6075 flow [2024-06-28 00:03:28,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 327 transitions, 5813 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-28 00:03:28,033 INFO L231 Difference]: Finished difference. Result has 344 places, 317 transitions, 5097 flow [2024-06-28 00:03:28,033 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4795, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5097, PETRI_PLACES=344, PETRI_TRANSITIONS=317} [2024-06-28 00:03:28,033 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 314 predicate places. [2024-06-28 00:03:28,033 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 317 transitions, 5097 flow [2024-06-28 00:03:28,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:28,034 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:28,034 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:28,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-28 00:03:28,034 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)] === [2024-06-28 00:03:28,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:28,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1865095327, now seen corresponding path program 5 times [2024-06-28 00:03:28,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:28,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008036391] [2024-06-28 00:03:28,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:28,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:28,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:29,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:29,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:29,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008036391] [2024-06-28 00:03:29,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008036391] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:29,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:29,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:03:29,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612821964] [2024-06-28 00:03:29,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:29,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:03:29,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:29,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:03:29,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:03:29,601 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:03:29,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 317 transitions, 5097 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:29,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:29,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:03:29,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:30,041 INFO L124 PetriNetUnfolderBase]: 681/1211 cut-off events. [2024-06-28 00:03:30,041 INFO L125 PetriNetUnfolderBase]: For 108237/108237 co-relation queries the response was YES. [2024-06-28 00:03:30,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10435 conditions, 1211 events. 681/1211 cut-off events. For 108237/108237 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 6301 event pairs, 172 based on Foata normal form. 3/1214 useless extension candidates. Maximal degree in co-relation 10306. Up to 1168 conditions per place. [2024-06-28 00:03:30,053 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 309 selfloop transitions, 20 changer transitions 0/331 dead transitions. [2024-06-28 00:03:30,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 331 transitions, 6013 flow [2024-06-28 00:03:30,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:03:30,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:03:30,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 100 transitions. [2024-06-28 00:03:30,054 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3225806451612903 [2024-06-28 00:03:30,054 INFO L175 Difference]: Start difference. First operand has 344 places, 317 transitions, 5097 flow. Second operand 10 states and 100 transitions. [2024-06-28 00:03:30,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 331 transitions, 6013 flow [2024-06-28 00:03:30,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 331 transitions, 5655 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-28 00:03:30,404 INFO L231 Difference]: Finished difference. Result has 345 places, 320 transitions, 4852 flow [2024-06-28 00:03:30,404 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4741, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4852, PETRI_PLACES=345, PETRI_TRANSITIONS=320} [2024-06-28 00:03:30,404 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 315 predicate places. [2024-06-28 00:03:30,404 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 320 transitions, 4852 flow [2024-06-28 00:03:30,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:30,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:30,405 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:30,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-28 00:03:30,405 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)] === [2024-06-28 00:03:30,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:30,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1599390328, now seen corresponding path program 12 times [2024-06-28 00:03:30,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:30,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742558460] [2024-06-28 00:03:30,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:30,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:30,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:31,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:31,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:31,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742558460] [2024-06-28 00:03:31,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742558460] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:31,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:31,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:03:31,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40767433] [2024-06-28 00:03:31,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:31,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:03:31,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:31,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:03:31,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:03:32,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:03:32,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 320 transitions, 4852 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) [2024-06-28 00:03:32,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:32,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:03:32,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:32,468 INFO L124 PetriNetUnfolderBase]: 692/1229 cut-off events. [2024-06-28 00:03:32,468 INFO L125 PetriNetUnfolderBase]: For 107646/107646 co-relation queries the response was YES. [2024-06-28 00:03:32,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10379 conditions, 1229 events. 692/1229 cut-off events. For 107646/107646 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 6380 event pairs, 75 based on Foata normal form. 2/1231 useless extension candidates. Maximal degree in co-relation 10251. Up to 693 conditions per place. [2024-06-28 00:03:32,483 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 196 selfloop transitions, 141 changer transitions 0/339 dead transitions. [2024-06-28 00:03:32,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 339 transitions, 6274 flow [2024-06-28 00:03:32,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:03:32,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:03:32,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 124 transitions. [2024-06-28 00:03:32,484 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-28 00:03:32,484 INFO L175 Difference]: Start difference. First operand has 345 places, 320 transitions, 4852 flow. Second operand 9 states and 124 transitions. [2024-06-28 00:03:32,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 339 transitions, 6274 flow [2024-06-28 00:03:32,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 339 transitions, 6181 flow, removed 27 selfloop flow, removed 8 redundant places. [2024-06-28 00:03:32,858 INFO L231 Difference]: Finished difference. Result has 346 places, 325 transitions, 5122 flow [2024-06-28 00:03:32,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4759, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5122, PETRI_PLACES=346, PETRI_TRANSITIONS=325} [2024-06-28 00:03:32,859 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 316 predicate places. [2024-06-28 00:03:32,859 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 325 transitions, 5122 flow [2024-06-28 00:03:32,859 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) [2024-06-28 00:03:32,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:32,859 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:32,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-28 00:03:32,860 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)] === [2024-06-28 00:03:32,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:32,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1118697291, now seen corresponding path program 15 times [2024-06-28 00:03:32,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:32,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791743567] [2024-06-28 00:03:32,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:32,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:32,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:34,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:34,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:34,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791743567] [2024-06-28 00:03:34,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791743567] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:34,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:34,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:03:34,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104216502] [2024-06-28 00:03:34,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:34,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:03:34,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:34,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:03:34,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:03:34,748 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:03:34,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 325 transitions, 5122 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:34,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:34,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:03:34,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:35,239 INFO L124 PetriNetUnfolderBase]: 690/1226 cut-off events. [2024-06-28 00:03:35,239 INFO L125 PetriNetUnfolderBase]: For 105559/105559 co-relation queries the response was YES. [2024-06-28 00:03:35,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10485 conditions, 1226 events. 690/1226 cut-off events. For 105559/105559 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 6392 event pairs, 77 based on Foata normal form. 1/1227 useless extension candidates. Maximal degree in co-relation 10357. Up to 978 conditions per place. [2024-06-28 00:03:35,254 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 219 selfloop transitions, 114 changer transitions 0/335 dead transitions. [2024-06-28 00:03:35,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 335 transitions, 5810 flow [2024-06-28 00:03:35,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:03:35,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:03:35,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-28 00:03:35,255 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3519061583577713 [2024-06-28 00:03:35,255 INFO L175 Difference]: Start difference. First operand has 346 places, 325 transitions, 5122 flow. Second operand 11 states and 120 transitions. [2024-06-28 00:03:35,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 335 transitions, 5810 flow [2024-06-28 00:03:35,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 335 transitions, 5389 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-28 00:03:35,641 INFO L231 Difference]: Finished difference. Result has 350 places, 325 transitions, 4935 flow [2024-06-28 00:03:35,642 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4701, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4935, PETRI_PLACES=350, PETRI_TRANSITIONS=325} [2024-06-28 00:03:35,642 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 320 predicate places. [2024-06-28 00:03:35,642 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 325 transitions, 4935 flow [2024-06-28 00:03:35,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:35,642 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:35,642 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:35,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-28 00:03:35,642 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)] === [2024-06-28 00:03:35,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:35,644 INFO L85 PathProgramCache]: Analyzing trace with hash -976840426, now seen corresponding path program 13 times [2024-06-28 00:03:35,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:35,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682618683] [2024-06-28 00:03:35,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:35,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:35,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:37,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:37,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:37,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682618683] [2024-06-28 00:03:37,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682618683] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:37,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:37,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:03:37,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021235286] [2024-06-28 00:03:37,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:37,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:03:37,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:37,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:03:37,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:03:37,405 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:03:37,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 325 transitions, 4935 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) [2024-06-28 00:03:37,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:37,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:03:37,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:37,826 INFO L124 PetriNetUnfolderBase]: 684/1216 cut-off events. [2024-06-28 00:03:37,826 INFO L125 PetriNetUnfolderBase]: For 102897/102897 co-relation queries the response was YES. [2024-06-28 00:03:37,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10133 conditions, 1216 events. 684/1216 cut-off events. For 102897/102897 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 6353 event pairs, 74 based on Foata normal form. 2/1218 useless extension candidates. Maximal degree in co-relation 10003. Up to 685 conditions per place. [2024-06-28 00:03:37,840 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 191 selfloop transitions, 144 changer transitions 0/337 dead transitions. [2024-06-28 00:03:37,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 337 transitions, 5971 flow [2024-06-28 00:03:37,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:03:37,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:03:37,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 119 transitions. [2024-06-28 00:03:37,842 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4265232974910394 [2024-06-28 00:03:37,842 INFO L175 Difference]: Start difference. First operand has 350 places, 325 transitions, 4935 flow. Second operand 9 states and 119 transitions. [2024-06-28 00:03:37,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 337 transitions, 5971 flow [2024-06-28 00:03:38,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 337 transitions, 5690 flow, removed 29 selfloop flow, removed 9 redundant places. [2024-06-28 00:03:38,190 INFO L231 Difference]: Finished difference. Result has 350 places, 325 transitions, 4965 flow [2024-06-28 00:03:38,190 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4670, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=144, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4965, PETRI_PLACES=350, PETRI_TRANSITIONS=325} [2024-06-28 00:03:38,191 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 320 predicate places. [2024-06-28 00:03:38,191 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 325 transitions, 4965 flow [2024-06-28 00:03:38,191 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) [2024-06-28 00:03:38,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:38,191 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:38,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-28 00:03:38,191 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)] === [2024-06-28 00:03:38,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:38,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1170780053, now seen corresponding path program 16 times [2024-06-28 00:03:38,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:38,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031410340] [2024-06-28 00:03:38,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:38,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:38,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:39,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:39,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:39,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031410340] [2024-06-28 00:03:39,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031410340] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:39,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:39,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:03:39,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256550782] [2024-06-28 00:03:39,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:39,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:03:39,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:39,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:03:39,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:03:39,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:03:39,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 325 transitions, 4965 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:39,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:39,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:03:39,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:40,015 INFO L124 PetriNetUnfolderBase]: 682/1213 cut-off events. [2024-06-28 00:03:40,015 INFO L125 PetriNetUnfolderBase]: For 99618/99618 co-relation queries the response was YES. [2024-06-28 00:03:40,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10091 conditions, 1213 events. 682/1213 cut-off events. For 99618/99618 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 6313 event pairs, 79 based on Foata normal form. 1/1214 useless extension candidates. Maximal degree in co-relation 9961. Up to 853 conditions per place. [2024-06-28 00:03:40,029 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 217 selfloop transitions, 114 changer transitions 0/333 dead transitions. [2024-06-28 00:03:40,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 333 transitions, 5645 flow [2024-06-28 00:03:40,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:03:40,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:03:40,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-28 00:03:40,030 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36774193548387096 [2024-06-28 00:03:40,030 INFO L175 Difference]: Start difference. First operand has 350 places, 325 transitions, 4965 flow. Second operand 10 states and 114 transitions. [2024-06-28 00:03:40,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 333 transitions, 5645 flow [2024-06-28 00:03:40,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 333 transitions, 5332 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-28 00:03:40,382 INFO L231 Difference]: Finished difference. Result has 352 places, 325 transitions, 4887 flow [2024-06-28 00:03:40,382 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4652, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4887, PETRI_PLACES=352, PETRI_TRANSITIONS=325} [2024-06-28 00:03:40,383 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 322 predicate places. [2024-06-28 00:03:40,383 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 325 transitions, 4887 flow [2024-06-28 00:03:40,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:40,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:40,383 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:40,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-28 00:03:40,383 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)] === [2024-06-28 00:03:40,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:40,383 INFO L85 PathProgramCache]: Analyzing trace with hash 1126321648, now seen corresponding path program 14 times [2024-06-28 00:03:40,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:40,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054809700] [2024-06-28 00:03:40,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:40,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:40,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:41,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:41,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:41,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054809700] [2024-06-28 00:03:41,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054809700] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:41,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:41,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:03:41,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513620075] [2024-06-28 00:03:41,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:41,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:03:41,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:41,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:03:41,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:03:41,847 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:03:41,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 325 transitions, 4887 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:41,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:41,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:03:41,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:42,191 INFO L124 PetriNetUnfolderBase]: 678/1206 cut-off events. [2024-06-28 00:03:42,192 INFO L125 PetriNetUnfolderBase]: For 97963/97963 co-relation queries the response was YES. [2024-06-28 00:03:42,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9898 conditions, 1206 events. 678/1206 cut-off events. For 97963/97963 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 6292 event pairs, 173 based on Foata normal form. 1/1207 useless extension candidates. Maximal degree in co-relation 9766. Up to 1175 conditions per place. [2024-06-28 00:03:42,206 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 314 selfloop transitions, 18 changer transitions 0/334 dead transitions. [2024-06-28 00:03:42,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 334 transitions, 5571 flow [2024-06-28 00:03:42,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:03:42,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:03:42,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 96 transitions. [2024-06-28 00:03:42,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3096774193548387 [2024-06-28 00:03:42,208 INFO L175 Difference]: Start difference. First operand has 352 places, 325 transitions, 4887 flow. Second operand 10 states and 96 transitions. [2024-06-28 00:03:42,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 334 transitions, 5571 flow [2024-06-28 00:03:42,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 334 transitions, 5309 flow, removed 13 selfloop flow, removed 10 redundant places. [2024-06-28 00:03:42,577 INFO L231 Difference]: Finished difference. Result has 352 places, 325 transitions, 4666 flow [2024-06-28 00:03:42,577 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4625, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4666, PETRI_PLACES=352, PETRI_TRANSITIONS=325} [2024-06-28 00:03:42,577 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 322 predicate places. [2024-06-28 00:03:42,577 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 325 transitions, 4666 flow [2024-06-28 00:03:42,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:42,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:42,578 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:42,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-28 00:03:42,578 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)] === [2024-06-28 00:03:42,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:42,578 INFO L85 PathProgramCache]: Analyzing trace with hash 1862795981, now seen corresponding path program 6 times [2024-06-28 00:03:42,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:42,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032925629] [2024-06-28 00:03:42,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:42,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:42,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:44,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:44,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:44,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032925629] [2024-06-28 00:03:44,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032925629] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:44,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:44,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:03:44,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673322374] [2024-06-28 00:03:44,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:44,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:03:44,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:44,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:03:44,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:03:44,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:03:44,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 325 transitions, 4666 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:44,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:44,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:03:44,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:44,618 INFO L124 PetriNetUnfolderBase]: 676/1203 cut-off events. [2024-06-28 00:03:44,619 INFO L125 PetriNetUnfolderBase]: For 93612/93612 co-relation queries the response was YES. [2024-06-28 00:03:44,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9565 conditions, 1203 events. 676/1203 cut-off events. For 93612/93612 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 6293 event pairs, 172 based on Foata normal form. 1/1204 useless extension candidates. Maximal degree in co-relation 9434. Up to 1157 conditions per place. [2024-06-28 00:03:44,643 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 312 selfloop transitions, 24 changer transitions 0/338 dead transitions. [2024-06-28 00:03:44,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 338 transitions, 5426 flow [2024-06-28 00:03:44,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:03:44,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:03:44,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 113 transitions. [2024-06-28 00:03:44,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30376344086021506 [2024-06-28 00:03:44,645 INFO L175 Difference]: Start difference. First operand has 352 places, 325 transitions, 4666 flow. Second operand 12 states and 113 transitions. [2024-06-28 00:03:44,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 338 transitions, 5426 flow [2024-06-28 00:03:45,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 338 transitions, 5389 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-28 00:03:45,042 INFO L231 Difference]: Finished difference. Result has 355 places, 327 transitions, 4730 flow [2024-06-28 00:03:45,043 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4629, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4730, PETRI_PLACES=355, PETRI_TRANSITIONS=327} [2024-06-28 00:03:45,043 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 325 predicate places. [2024-06-28 00:03:45,043 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 327 transitions, 4730 flow [2024-06-28 00:03:45,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:45,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:45,043 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:45,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-28 00:03:45,044 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)] === [2024-06-28 00:03:45,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:45,045 INFO L85 PathProgramCache]: Analyzing trace with hash -1173405612, now seen corresponding path program 15 times [2024-06-28 00:03:45,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:45,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372354105] [2024-06-28 00:03:45,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:45,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:45,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:46,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:46,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:46,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372354105] [2024-06-28 00:03:46,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372354105] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:46,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:46,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:03:46,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918478858] [2024-06-28 00:03:46,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:46,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:03:46,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:46,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:03:46,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:03:46,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:03:46,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 327 transitions, 4730 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) [2024-06-28 00:03:46,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:46,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:03:46,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:47,141 INFO L124 PetriNetUnfolderBase]: 670/1193 cut-off events. [2024-06-28 00:03:47,142 INFO L125 PetriNetUnfolderBase]: For 92626/92626 co-relation queries the response was YES. [2024-06-28 00:03:47,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9403 conditions, 1193 events. 670/1193 cut-off events. For 92626/92626 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 6227 event pairs, 72 based on Foata normal form. 2/1195 useless extension candidates. Maximal degree in co-relation 9271. Up to 669 conditions per place. [2024-06-28 00:03:47,156 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 213 selfloop transitions, 126 changer transitions 0/341 dead transitions. [2024-06-28 00:03:47,156 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 341 transitions, 5980 flow [2024-06-28 00:03:47,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:03:47,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:03:47,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 125 transitions. [2024-06-28 00:03:47,157 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44802867383512546 [2024-06-28 00:03:47,157 INFO L175 Difference]: Start difference. First operand has 355 places, 327 transitions, 4730 flow. Second operand 9 states and 125 transitions. [2024-06-28 00:03:47,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 341 transitions, 5980 flow [2024-06-28 00:03:47,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 341 transitions, 5829 flow, removed 53 selfloop flow, removed 10 redundant places. [2024-06-28 00:03:47,507 INFO L231 Difference]: Finished difference. Result has 354 places, 327 transitions, 4870 flow [2024-06-28 00:03:47,508 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4611, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4870, PETRI_PLACES=354, PETRI_TRANSITIONS=327} [2024-06-28 00:03:47,508 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 324 predicate places. [2024-06-28 00:03:47,508 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 327 transitions, 4870 flow [2024-06-28 00:03:47,508 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) [2024-06-28 00:03:47,508 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:47,508 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:47,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-28 00:03:47,509 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)] === [2024-06-28 00:03:47,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:47,509 INFO L85 PathProgramCache]: Analyzing trace with hash 738158287, now seen corresponding path program 1 times [2024-06-28 00:03:47,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:47,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159097864] [2024-06-28 00:03:47,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:47,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:47,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:48,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:48,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:48,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159097864] [2024-06-28 00:03:48,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159097864] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:48,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:48,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:03:48,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583232395] [2024-06-28 00:03:48,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:48,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:03:48,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:48,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:03:48,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:03:48,972 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:03:48,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 327 transitions, 4870 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:48,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:48,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:03:48,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:49,418 INFO L124 PetriNetUnfolderBase]: 674/1201 cut-off events. [2024-06-28 00:03:49,418 INFO L125 PetriNetUnfolderBase]: For 95101/95101 co-relation queries the response was YES. [2024-06-28 00:03:49,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9600 conditions, 1201 events. 674/1201 cut-off events. For 95101/95101 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 6323 event pairs, 87 based on Foata normal form. 2/1203 useless extension candidates. Maximal degree in co-relation 9468. Up to 1076 conditions per place. [2024-06-28 00:03:49,434 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 317 selfloop transitions, 30 changer transitions 0/349 dead transitions. [2024-06-28 00:03:49,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 349 transitions, 5654 flow [2024-06-28 00:03:49,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:03:49,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:03:49,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 113 transitions. [2024-06-28 00:03:49,435 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3313782991202346 [2024-06-28 00:03:49,435 INFO L175 Difference]: Start difference. First operand has 354 places, 327 transitions, 4870 flow. Second operand 11 states and 113 transitions. [2024-06-28 00:03:49,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 349 transitions, 5654 flow [2024-06-28 00:03:49,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 349 transitions, 5342 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-28 00:03:49,823 INFO L231 Difference]: Finished difference. Result has 357 places, 329 transitions, 4670 flow [2024-06-28 00:03:49,824 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4558, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4670, PETRI_PLACES=357, PETRI_TRANSITIONS=329} [2024-06-28 00:03:49,824 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 327 predicate places. [2024-06-28 00:03:49,824 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 329 transitions, 4670 flow [2024-06-28 00:03:49,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:49,824 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:49,824 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:49,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-28 00:03:49,824 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)] === [2024-06-28 00:03:49,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:49,825 INFO L85 PathProgramCache]: Analyzing trace with hash -1992674625, now seen corresponding path program 2 times [2024-06-28 00:03:49,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:49,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694444316] [2024-06-28 00:03:49,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:49,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:49,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:50,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:50,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:50,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694444316] [2024-06-28 00:03:50,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694444316] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:50,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:50,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:03:50,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305008079] [2024-06-28 00:03:50,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:50,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:03:50,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:50,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:03:50,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:03:50,885 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-28 00:03:50,885 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 329 transitions, 4670 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) [2024-06-28 00:03:50,885 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:50,886 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-28 00:03:50,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:51,220 INFO L124 PetriNetUnfolderBase]: 620/1154 cut-off events. [2024-06-28 00:03:51,221 INFO L125 PetriNetUnfolderBase]: For 99608/99613 co-relation queries the response was YES. [2024-06-28 00:03:51,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9122 conditions, 1154 events. 620/1154 cut-off events. For 99608/99613 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 6333 event pairs, 17 based on Foata normal form. 7/1159 useless extension candidates. Maximal degree in co-relation 8987. Up to 655 conditions per place. [2024-06-28 00:03:51,234 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 179 selfloop transitions, 64 changer transitions 0/349 dead transitions. [2024-06-28 00:03:51,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 349 transitions, 5311 flow [2024-06-28 00:03:51,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:03:51,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:03:51,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-28 00:03:51,236 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4157706093189964 [2024-06-28 00:03:51,236 INFO L175 Difference]: Start difference. First operand has 357 places, 329 transitions, 4670 flow. Second operand 9 states and 116 transitions. [2024-06-28 00:03:51,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 349 transitions, 5311 flow [2024-06-28 00:03:51,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 349 transitions, 5176 flow, removed 36 selfloop flow, removed 9 redundant places. [2024-06-28 00:03:51,694 INFO L231 Difference]: Finished difference. Result has 358 places, 335 transitions, 4845 flow [2024-06-28 00:03:51,695 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4572, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4845, PETRI_PLACES=358, PETRI_TRANSITIONS=335} [2024-06-28 00:03:51,695 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 328 predicate places. [2024-06-28 00:03:51,695 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 335 transitions, 4845 flow [2024-06-28 00:03:51,696 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) [2024-06-28 00:03:51,696 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:51,696 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:51,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-28 00:03:51,696 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)] === [2024-06-28 00:03:51,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:51,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1571232309, now seen corresponding path program 1 times [2024-06-28 00:03:51,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:51,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503980230] [2024-06-28 00:03:51,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:51,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:51,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:53,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:53,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:53,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503980230] [2024-06-28 00:03:53,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503980230] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:53,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:53,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:03:53,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443205084] [2024-06-28 00:03:53,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:53,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:03:53,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:53,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:03:53,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:03:53,439 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:03:53,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 335 transitions, 4845 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:53,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:53,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:03:53,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:53,794 INFO L124 PetriNetUnfolderBase]: 683/1220 cut-off events. [2024-06-28 00:03:53,794 INFO L125 PetriNetUnfolderBase]: For 92611/92611 co-relation queries the response was YES. [2024-06-28 00:03:53,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9608 conditions, 1220 events. 683/1220 cut-off events. For 92611/92611 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 6459 event pairs, 94 based on Foata normal form. 1/1221 useless extension candidates. Maximal degree in co-relation 9471. Up to 1031 conditions per place. [2024-06-28 00:03:53,813 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 271 selfloop transitions, 76 changer transitions 0/349 dead transitions. [2024-06-28 00:03:53,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 349 transitions, 5597 flow [2024-06-28 00:03:53,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:03:53,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:03:53,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-28 00:03:53,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36200716845878134 [2024-06-28 00:03:53,814 INFO L175 Difference]: Start difference. First operand has 358 places, 335 transitions, 4845 flow. Second operand 9 states and 101 transitions. [2024-06-28 00:03:53,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 349 transitions, 5597 flow [2024-06-28 00:03:54,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 349 transitions, 5446 flow, removed 26 selfloop flow, removed 11 redundant places. [2024-06-28 00:03:54,245 INFO L231 Difference]: Finished difference. Result has 356 places, 335 transitions, 4873 flow [2024-06-28 00:03:54,245 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4704, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4873, PETRI_PLACES=356, PETRI_TRANSITIONS=335} [2024-06-28 00:03:54,245 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 326 predicate places. [2024-06-28 00:03:54,245 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 335 transitions, 4873 flow [2024-06-28 00:03:54,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:54,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:54,246 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:54,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-28 00:03:54,246 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)] === [2024-06-28 00:03:54,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:54,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1505288059, now seen corresponding path program 3 times [2024-06-28 00:03:54,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:54,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877374768] [2024-06-28 00:03:54,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:54,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:54,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:55,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:55,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:55,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877374768] [2024-06-28 00:03:55,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877374768] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:55,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:55,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:03:55,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91270922] [2024-06-28 00:03:55,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:55,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:03:55,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:55,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:03:55,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:03:55,833 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:03:55,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 335 transitions, 4873 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:55,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:55,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:03:55,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:56,308 INFO L124 PetriNetUnfolderBase]: 691/1236 cut-off events. [2024-06-28 00:03:56,308 INFO L125 PetriNetUnfolderBase]: For 88519/88519 co-relation queries the response was YES. [2024-06-28 00:03:56,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9572 conditions, 1236 events. 691/1236 cut-off events. For 88519/88519 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 6540 event pairs, 76 based on Foata normal form. 2/1238 useless extension candidates. Maximal degree in co-relation 9440. Up to 1131 conditions per place. [2024-06-28 00:03:56,323 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 310 selfloop transitions, 44 changer transitions 0/356 dead transitions. [2024-06-28 00:03:56,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 356 transitions, 5697 flow [2024-06-28 00:03:56,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:03:56,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:03:56,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 123 transitions. [2024-06-28 00:03:56,324 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33064516129032256 [2024-06-28 00:03:56,324 INFO L175 Difference]: Start difference. First operand has 356 places, 335 transitions, 4873 flow. Second operand 12 states and 123 transitions. [2024-06-28 00:03:56,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 356 transitions, 5697 flow [2024-06-28 00:03:56,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 356 transitions, 5375 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-28 00:03:56,724 INFO L231 Difference]: Finished difference. Result has 358 places, 338 transitions, 4729 flow [2024-06-28 00:03:56,724 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4556, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4729, PETRI_PLACES=358, PETRI_TRANSITIONS=338} [2024-06-28 00:03:56,725 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 328 predicate places. [2024-06-28 00:03:56,725 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 338 transitions, 4729 flow [2024-06-28 00:03:56,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:56,725 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:56,725 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:56,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-28 00:03:56,725 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)] === [2024-06-28 00:03:56,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:56,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1406972907, now seen corresponding path program 4 times [2024-06-28 00:03:56,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:56,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557800653] [2024-06-28 00:03:56,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:56,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:56,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:58,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:58,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:58,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557800653] [2024-06-28 00:03:58,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557800653] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:58,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:58,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:03:58,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296277580] [2024-06-28 00:03:58,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:58,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:03:58,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:58,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:03:58,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:03:58,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:03:58,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 338 transitions, 4729 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:58,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:58,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:03:58,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:58,581 INFO L124 PetriNetUnfolderBase]: 711/1275 cut-off events. [2024-06-28 00:03:58,581 INFO L125 PetriNetUnfolderBase]: For 89305/89305 co-relation queries the response was YES. [2024-06-28 00:03:58,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9680 conditions, 1275 events. 711/1275 cut-off events. For 89305/89305 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 6837 event pairs, 107 based on Foata normal form. 2/1277 useless extension candidates. Maximal degree in co-relation 9545. Up to 1126 conditions per place. [2024-06-28 00:03:58,596 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 310 selfloop transitions, 48 changer transitions 0/360 dead transitions. [2024-06-28 00:03:58,596 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 360 transitions, 5577 flow [2024-06-28 00:03:58,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:03:58,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:03:58,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-28 00:03:58,597 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34017595307917886 [2024-06-28 00:03:58,598 INFO L175 Difference]: Start difference. First operand has 358 places, 338 transitions, 4729 flow. Second operand 11 states and 116 transitions. [2024-06-28 00:03:58,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 360 transitions, 5577 flow [2024-06-28 00:03:59,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 360 transitions, 5393 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-28 00:03:59,013 INFO L231 Difference]: Finished difference. Result has 362 places, 343 transitions, 4756 flow [2024-06-28 00:03:59,013 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4545, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4756, PETRI_PLACES=362, PETRI_TRANSITIONS=343} [2024-06-28 00:03:59,013 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 332 predicate places. [2024-06-28 00:03:59,013 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 343 transitions, 4756 flow [2024-06-28 00:03:59,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:59,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:59,014 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:59,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-28 00:03:59,014 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)] === [2024-06-28 00:03:59,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:59,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1162810275, now seen corresponding path program 5 times [2024-06-28 00:03:59,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:59,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348750417] [2024-06-28 00:03:59,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:59,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:59,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:00,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:00,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:00,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348750417] [2024-06-28 00:04:00,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348750417] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:00,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:00,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:04:00,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417406624] [2024-06-28 00:04:00,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:00,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:04:00,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:00,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:04:00,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:04:00,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:04:00,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 343 transitions, 4756 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:00,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:00,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:04:00,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:00,803 INFO L124 PetriNetUnfolderBase]: 719/1291 cut-off events. [2024-06-28 00:04:00,803 INFO L125 PetriNetUnfolderBase]: For 91625/91625 co-relation queries the response was YES. [2024-06-28 00:04:00,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9796 conditions, 1291 events. 719/1291 cut-off events. For 91625/91625 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 6950 event pairs, 99 based on Foata normal form. 2/1293 useless extension candidates. Maximal degree in co-relation 9659. Up to 1096 conditions per place. [2024-06-28 00:04:00,818 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 316 selfloop transitions, 47 changer transitions 0/365 dead transitions. [2024-06-28 00:04:00,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 365 transitions, 5619 flow [2024-06-28 00:04:00,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:04:00,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:04:00,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-28 00:04:00,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36129032258064514 [2024-06-28 00:04:00,820 INFO L175 Difference]: Start difference. First operand has 362 places, 343 transitions, 4756 flow. Second operand 10 states and 112 transitions. [2024-06-28 00:04:00,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 365 transitions, 5619 flow [2024-06-28 00:04:01,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 365 transitions, 5501 flow, removed 31 selfloop flow, removed 7 redundant places. [2024-06-28 00:04:01,245 INFO L231 Difference]: Finished difference. Result has 366 places, 347 transitions, 4855 flow [2024-06-28 00:04:01,246 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4638, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4855, PETRI_PLACES=366, PETRI_TRANSITIONS=347} [2024-06-28 00:04:01,246 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 336 predicate places. [2024-06-28 00:04:01,246 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 347 transitions, 4855 flow [2024-06-28 00:04:01,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:01,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:01,246 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:01,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-28 00:04:01,246 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)] === [2024-06-28 00:04:01,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:01,247 INFO L85 PathProgramCache]: Analyzing trace with hash 691751815, now seen corresponding path program 1 times [2024-06-28 00:04:01,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:01,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398891641] [2024-06-28 00:04:01,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:01,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:01,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:03,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:03,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:03,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398891641] [2024-06-28 00:04:03,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398891641] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:03,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:03,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:04:03,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747926055] [2024-06-28 00:04:03,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:03,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:04:03,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:03,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:04:03,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:04:03,162 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:04:03,162 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 347 transitions, 4855 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) [2024-06-28 00:04:03,163 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:03,163 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:04:03,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:03,593 INFO L124 PetriNetUnfolderBase]: 725/1302 cut-off events. [2024-06-28 00:04:03,594 INFO L125 PetriNetUnfolderBase]: For 95206/95206 co-relation queries the response was YES. [2024-06-28 00:04:03,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9951 conditions, 1302 events. 725/1302 cut-off events. For 95206/95206 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 7021 event pairs, 80 based on Foata normal form. 2/1304 useless extension candidates. Maximal degree in co-relation 9812. Up to 1150 conditions per place. [2024-06-28 00:04:03,615 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 305 selfloop transitions, 58 changer transitions 0/365 dead transitions. [2024-06-28 00:04:03,615 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 365 transitions, 5688 flow [2024-06-28 00:04:03,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:04:03,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:04:03,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-28 00:04:03,619 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36950146627565983 [2024-06-28 00:04:03,620 INFO L175 Difference]: Start difference. First operand has 366 places, 347 transitions, 4855 flow. Second operand 11 states and 126 transitions. [2024-06-28 00:04:03,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 365 transitions, 5688 flow [2024-06-28 00:04:04,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 365 transitions, 5527 flow, removed 40 selfloop flow, removed 7 redundant places. [2024-06-28 00:04:04,127 INFO L231 Difference]: Finished difference. Result has 370 places, 349 transitions, 4856 flow [2024-06-28 00:04:04,127 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4694, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4856, PETRI_PLACES=370, PETRI_TRANSITIONS=349} [2024-06-28 00:04:04,127 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 340 predicate places. [2024-06-28 00:04:04,128 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 349 transitions, 4856 flow [2024-06-28 00:04:04,128 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) [2024-06-28 00:04:04,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:04,128 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:04,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-28 00:04:04,128 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)] === [2024-06-28 00:04:04,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:04,128 INFO L85 PathProgramCache]: Analyzing trace with hash -452079561, now seen corresponding path program 6 times [2024-06-28 00:04:04,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:04,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957075494] [2024-06-28 00:04:04,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:04,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:04,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:05,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:05,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:05,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957075494] [2024-06-28 00:04:05,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957075494] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:05,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:05,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:04:05,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232271498] [2024-06-28 00:04:05,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:05,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:04:05,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:05,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:04:05,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:04:05,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:04:05,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 349 transitions, 4856 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:05,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:05,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:04:05,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:06,002 INFO L124 PetriNetUnfolderBase]: 729/1309 cut-off events. [2024-06-28 00:04:06,002 INFO L125 PetriNetUnfolderBase]: For 95839/95839 co-relation queries the response was YES. [2024-06-28 00:04:06,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9935 conditions, 1309 events. 729/1309 cut-off events. For 95839/95839 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 7052 event pairs, 74 based on Foata normal form. 2/1311 useless extension candidates. Maximal degree in co-relation 9795. Up to 1214 conditions per place. [2024-06-28 00:04:06,019 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 341 selfloop transitions, 27 changer transitions 0/370 dead transitions. [2024-06-28 00:04:06,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 370 transitions, 5696 flow [2024-06-28 00:04:06,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:04:06,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:04:06,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 114 transitions. [2024-06-28 00:04:06,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3343108504398827 [2024-06-28 00:04:06,020 INFO L175 Difference]: Start difference. First operand has 370 places, 349 transitions, 4856 flow. Second operand 11 states and 114 transitions. [2024-06-28 00:04:06,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 370 transitions, 5696 flow [2024-06-28 00:04:06,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 370 transitions, 5552 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-28 00:04:06,464 INFO L231 Difference]: Finished difference. Result has 373 places, 351 transitions, 4832 flow [2024-06-28 00:04:06,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4712, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4832, PETRI_PLACES=373, PETRI_TRANSITIONS=351} [2024-06-28 00:04:06,465 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 343 predicate places. [2024-06-28 00:04:06,466 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 351 transitions, 4832 flow [2024-06-28 00:04:06,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:06,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:06,466 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:06,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-28 00:04:06,466 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)] === [2024-06-28 00:04:06,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:06,467 INFO L85 PathProgramCache]: Analyzing trace with hash 940604219, now seen corresponding path program 7 times [2024-06-28 00:04:06,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:06,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143795702] [2024-06-28 00:04:06,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:06,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:06,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:07,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:07,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:07,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143795702] [2024-06-28 00:04:07,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143795702] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:07,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:07,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:04:07,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042132415] [2024-06-28 00:04:07,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:07,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:04:07,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:07,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:04:07,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:04:08,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:04:08,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 351 transitions, 4832 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:08,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:08,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:04:08,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:08,495 INFO L124 PetriNetUnfolderBase]: 756/1362 cut-off events. [2024-06-28 00:04:08,495 INFO L125 PetriNetUnfolderBase]: For 107572/107572 co-relation queries the response was YES. [2024-06-28 00:04:08,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10452 conditions, 1362 events. 756/1362 cut-off events. For 107572/107572 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 7455 event pairs, 79 based on Foata normal form. 2/1364 useless extension candidates. Maximal degree in co-relation 10310. Up to 1191 conditions per place. [2024-06-28 00:04:08,514 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 335 selfloop transitions, 40 changer transitions 0/377 dead transitions. [2024-06-28 00:04:08,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 377 transitions, 5981 flow [2024-06-28 00:04:08,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:04:08,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:04:08,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-28 00:04:08,515 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3489736070381232 [2024-06-28 00:04:08,515 INFO L175 Difference]: Start difference. First operand has 373 places, 351 transitions, 4832 flow. Second operand 11 states and 119 transitions. [2024-06-28 00:04:08,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 377 transitions, 5981 flow [2024-06-28 00:04:09,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 377 transitions, 5875 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-06-28 00:04:09,061 INFO L231 Difference]: Finished difference. Result has 377 places, 359 transitions, 5019 flow [2024-06-28 00:04:09,061 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4726, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=313, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5019, PETRI_PLACES=377, PETRI_TRANSITIONS=359} [2024-06-28 00:04:09,061 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 347 predicate places. [2024-06-28 00:04:09,062 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 359 transitions, 5019 flow [2024-06-28 00:04:09,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:09,062 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:09,062 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:09,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-28 00:04:09,062 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)] === [2024-06-28 00:04:09,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:09,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1556092281, now seen corresponding path program 8 times [2024-06-28 00:04:09,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:09,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179800319] [2024-06-28 00:04:09,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:09,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:09,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:10,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:10,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:10,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179800319] [2024-06-28 00:04:10,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179800319] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:10,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:10,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:04:10,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338258628] [2024-06-28 00:04:10,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:10,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:04:10,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:10,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:04:10,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:04:10,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:04:10,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 359 transitions, 5019 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:10,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:10,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:04:10,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:11,035 INFO L124 PetriNetUnfolderBase]: 764/1378 cut-off events. [2024-06-28 00:04:11,035 INFO L125 PetriNetUnfolderBase]: For 110708/110708 co-relation queries the response was YES. [2024-06-28 00:04:11,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10652 conditions, 1378 events. 764/1378 cut-off events. For 110708/110708 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 7580 event pairs, 91 based on Foata normal form. 2/1380 useless extension candidates. Maximal degree in co-relation 10507. Up to 1274 conditions per place. [2024-06-28 00:04:11,054 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 334 selfloop transitions, 40 changer transitions 0/376 dead transitions. [2024-06-28 00:04:11,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 376 transitions, 5873 flow [2024-06-28 00:04:11,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:04:11,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:04:11,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-28 00:04:11,056 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34017595307917886 [2024-06-28 00:04:11,056 INFO L175 Difference]: Start difference. First operand has 377 places, 359 transitions, 5019 flow. Second operand 11 states and 116 transitions. [2024-06-28 00:04:11,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 376 transitions, 5873 flow [2024-06-28 00:04:11,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 376 transitions, 5708 flow, removed 62 selfloop flow, removed 6 redundant places. [2024-06-28 00:04:11,600 INFO L231 Difference]: Finished difference. Result has 382 places, 361 transitions, 5012 flow [2024-06-28 00:04:11,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4872, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5012, PETRI_PLACES=382, PETRI_TRANSITIONS=361} [2024-06-28 00:04:11,600 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 352 predicate places. [2024-06-28 00:04:11,600 INFO L495 AbstractCegarLoop]: Abstraction has has 382 places, 361 transitions, 5012 flow [2024-06-28 00:04:11,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:11,600 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:11,600 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:11,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-28 00:04:11,601 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)] === [2024-06-28 00:04:11,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:11,601 INFO L85 PathProgramCache]: Analyzing trace with hash -777624167, now seen corresponding path program 9 times [2024-06-28 00:04:11,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:11,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456663769] [2024-06-28 00:04:11,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:11,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:11,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:12,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:12,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:12,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456663769] [2024-06-28 00:04:12,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456663769] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:12,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:12,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:04:12,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473776213] [2024-06-28 00:04:12,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:12,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:04:12,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:12,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:04:12,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:04:13,019 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:04:13,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 361 transitions, 5012 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:13,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:13,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:04:13,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:13,532 INFO L124 PetriNetUnfolderBase]: 761/1373 cut-off events. [2024-06-28 00:04:13,532 INFO L125 PetriNetUnfolderBase]: For 103081/103081 co-relation queries the response was YES. [2024-06-28 00:04:13,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10290 conditions, 1373 events. 761/1373 cut-off events. For 103081/103081 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 7553 event pairs, 86 based on Foata normal form. 2/1375 useless extension candidates. Maximal degree in co-relation 10143. Up to 1241 conditions per place. [2024-06-28 00:04:13,549 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 334 selfloop transitions, 41 changer transitions 0/377 dead transitions. [2024-06-28 00:04:13,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 377 transitions, 5802 flow [2024-06-28 00:04:13,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:04:13,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:04:13,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-28 00:04:13,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34310850439882695 [2024-06-28 00:04:13,550 INFO L175 Difference]: Start difference. First operand has 382 places, 361 transitions, 5012 flow. Second operand 11 states and 117 transitions. [2024-06-28 00:04:13,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 377 transitions, 5802 flow [2024-06-28 00:04:14,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 377 transitions, 5669 flow, removed 36 selfloop flow, removed 7 redundant places. [2024-06-28 00:04:14,082 INFO L231 Difference]: Finished difference. Result has 386 places, 361 transitions, 4967 flow [2024-06-28 00:04:14,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4879, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4967, PETRI_PLACES=386, PETRI_TRANSITIONS=361} [2024-06-28 00:04:14,082 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 356 predicate places. [2024-06-28 00:04:14,083 INFO L495 AbstractCegarLoop]: Abstraction has has 386 places, 361 transitions, 4967 flow [2024-06-28 00:04:14,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:14,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:14,083 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:14,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-28 00:04:14,083 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)] === [2024-06-28 00:04:14,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:14,083 INFO L85 PathProgramCache]: Analyzing trace with hash 292402719, now seen corresponding path program 2 times [2024-06-28 00:04:14,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:14,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091288015] [2024-06-28 00:04:14,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:14,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:14,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:15,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:15,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:15,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091288015] [2024-06-28 00:04:15,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091288015] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:15,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:15,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:04:15,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068918308] [2024-06-28 00:04:15,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:15,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:04:15,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:15,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:04:15,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:04:15,864 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:04:15,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 361 transitions, 4967 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) [2024-06-28 00:04:15,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:15,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:04:15,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:16,284 INFO L124 PetriNetUnfolderBase]: 770/1388 cut-off events. [2024-06-28 00:04:16,284 INFO L125 PetriNetUnfolderBase]: For 105024/105024 co-relation queries the response was YES. [2024-06-28 00:04:16,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10307 conditions, 1388 events. 770/1388 cut-off events. For 105024/105024 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 7647 event pairs, 93 based on Foata normal form. 2/1390 useless extension candidates. Maximal degree in co-relation 10159. Up to 1148 conditions per place. [2024-06-28 00:04:16,302 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 269 selfloop transitions, 106 changer transitions 0/377 dead transitions. [2024-06-28 00:04:16,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 377 transitions, 5813 flow [2024-06-28 00:04:16,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:04:16,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:04:16,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-28 00:04:16,303 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-28 00:04:16,303 INFO L175 Difference]: Start difference. First operand has 386 places, 361 transitions, 4967 flow. Second operand 10 states and 120 transitions. [2024-06-28 00:04:16,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 377 transitions, 5813 flow [2024-06-28 00:04:16,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 377 transitions, 5731 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-28 00:04:16,873 INFO L231 Difference]: Finished difference. Result has 387 places, 365 transitions, 5168 flow [2024-06-28 00:04:16,873 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4885, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5168, PETRI_PLACES=387, PETRI_TRANSITIONS=365} [2024-06-28 00:04:16,873 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 357 predicate places. [2024-06-28 00:04:16,873 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 365 transitions, 5168 flow [2024-06-28 00:04:16,873 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) [2024-06-28 00:04:16,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:16,873 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:16,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-28 00:04:16,874 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)] === [2024-06-28 00:04:16,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:16,876 INFO L85 PathProgramCache]: Analyzing trace with hash 298898149, now seen corresponding path program 1 times [2024-06-28 00:04:16,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:16,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936203261] [2024-06-28 00:04:16,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:16,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:16,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:18,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:18,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:18,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936203261] [2024-06-28 00:04:18,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936203261] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:18,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:18,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:04:18,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760908128] [2024-06-28 00:04:18,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:18,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:04:18,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:18,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:04:18,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:04:18,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:04:18,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 365 transitions, 5168 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) [2024-06-28 00:04:18,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:18,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:04:18,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:19,225 INFO L124 PetriNetUnfolderBase]: 793/1437 cut-off events. [2024-06-28 00:04:19,225 INFO L125 PetriNetUnfolderBase]: For 146596/146596 co-relation queries the response was YES. [2024-06-28 00:04:19,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10816 conditions, 1437 events. 793/1437 cut-off events. For 146596/146596 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 7933 event pairs, 98 based on Foata normal form. 12/1449 useless extension candidates. Maximal degree in co-relation 10668. Up to 1156 conditions per place. [2024-06-28 00:04:19,239 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 275 selfloop transitions, 105 changer transitions 5/387 dead transitions. [2024-06-28 00:04:19,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 387 transitions, 6143 flow [2024-06-28 00:04:19,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:04:19,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:04:19,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-28 00:04:19,240 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4096774193548387 [2024-06-28 00:04:19,240 INFO L175 Difference]: Start difference. First operand has 387 places, 365 transitions, 5168 flow. Second operand 10 states and 127 transitions. [2024-06-28 00:04:19,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 387 transitions, 6143 flow [2024-06-28 00:04:19,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 387 transitions, 5715 flow, removed 34 selfloop flow, removed 10 redundant places. [2024-06-28 00:04:19,786 INFO L231 Difference]: Finished difference. Result has 388 places, 369 transitions, 5089 flow [2024-06-28 00:04:19,786 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4773, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5089, PETRI_PLACES=388, PETRI_TRANSITIONS=369} [2024-06-28 00:04:19,786 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 358 predicate places. [2024-06-28 00:04:19,786 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 369 transitions, 5089 flow [2024-06-28 00:04:19,787 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) [2024-06-28 00:04:19,787 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:19,787 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:19,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-28 00:04:19,787 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)] === [2024-06-28 00:04:19,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:19,787 INFO L85 PathProgramCache]: Analyzing trace with hash 298897839, now seen corresponding path program 3 times [2024-06-28 00:04:19,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:19,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509810988] [2024-06-28 00:04:19,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:19,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:19,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:21,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:21,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:21,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509810988] [2024-06-28 00:04:21,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509810988] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:21,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:21,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:04:21,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322584011] [2024-06-28 00:04:21,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:21,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:04:21,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:21,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:04:21,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:04:21,729 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:04:21,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 369 transitions, 5089 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) [2024-06-28 00:04:21,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:21,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:04:21,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:22,243 INFO L124 PetriNetUnfolderBase]: 782/1412 cut-off events. [2024-06-28 00:04:22,243 INFO L125 PetriNetUnfolderBase]: For 106950/106950 co-relation queries the response was YES. [2024-06-28 00:04:22,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10660 conditions, 1412 events. 782/1412 cut-off events. For 106950/106950 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 7819 event pairs, 93 based on Foata normal form. 2/1414 useless extension candidates. Maximal degree in co-relation 10511. Up to 1168 conditions per place. [2024-06-28 00:04:22,260 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 274 selfloop transitions, 108 changer transitions 0/384 dead transitions. [2024-06-28 00:04:22,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 384 transitions, 5949 flow [2024-06-28 00:04:22,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:04:22,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:04:22,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-28 00:04:22,262 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-28 00:04:22,262 INFO L175 Difference]: Start difference. First operand has 388 places, 369 transitions, 5089 flow. Second operand 10 states and 124 transitions. [2024-06-28 00:04:22,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 384 transitions, 5949 flow [2024-06-28 00:04:22,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 384 transitions, 5731 flow, removed 35 selfloop flow, removed 6 redundant places. [2024-06-28 00:04:22,821 INFO L231 Difference]: Finished difference. Result has 392 places, 371 transitions, 5140 flow [2024-06-28 00:04:22,822 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4871, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5140, PETRI_PLACES=392, PETRI_TRANSITIONS=371} [2024-06-28 00:04:22,822 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 362 predicate places. [2024-06-28 00:04:22,822 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 371 transitions, 5140 flow [2024-06-28 00:04:22,822 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) [2024-06-28 00:04:22,822 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:22,822 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:22,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-28 00:04:22,822 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)] === [2024-06-28 00:04:22,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:22,823 INFO L85 PathProgramCache]: Analyzing trace with hash 587622617, now seen corresponding path program 10 times [2024-06-28 00:04:22,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:22,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316116856] [2024-06-28 00:04:22,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:22,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:22,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:24,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:24,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:24,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316116856] [2024-06-28 00:04:24,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316116856] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:24,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:24,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:04:24,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173000689] [2024-06-28 00:04:24,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:24,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:04:24,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:24,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:04:24,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:04:24,299 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:04:24,299 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 371 transitions, 5140 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:24,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:24,299 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:04:24,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:24,824 INFO L124 PetriNetUnfolderBase]: 786/1420 cut-off events. [2024-06-28 00:04:24,825 INFO L125 PetriNetUnfolderBase]: For 111006/111006 co-relation queries the response was YES. [2024-06-28 00:04:24,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10783 conditions, 1420 events. 786/1420 cut-off events. For 111006/111006 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 7867 event pairs, 94 based on Foata normal form. 2/1422 useless extension candidates. Maximal degree in co-relation 10632. Up to 1325 conditions per place. [2024-06-28 00:04:24,844 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 360 selfloop transitions, 27 changer transitions 0/389 dead transitions. [2024-06-28 00:04:24,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 389 transitions, 6018 flow [2024-06-28 00:04:24,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:04:24,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:04:24,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 111 transitions. [2024-06-28 00:04:24,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3255131964809384 [2024-06-28 00:04:24,845 INFO L175 Difference]: Start difference. First operand has 392 places, 371 transitions, 5140 flow. Second operand 11 states and 111 transitions. [2024-06-28 00:04:24,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 389 transitions, 6018 flow [2024-06-28 00:04:25,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 389 transitions, 5765 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-28 00:04:25,397 INFO L231 Difference]: Finished difference. Result has 396 places, 373 transitions, 5015 flow [2024-06-28 00:04:25,397 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4887, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=371, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5015, PETRI_PLACES=396, PETRI_TRANSITIONS=373} [2024-06-28 00:04:25,397 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 366 predicate places. [2024-06-28 00:04:25,397 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 373 transitions, 5015 flow [2024-06-28 00:04:25,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:25,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:25,398 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:25,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-28 00:04:25,398 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)] === [2024-06-28 00:04:25,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:25,398 INFO L85 PathProgramCache]: Analyzing trace with hash -1414051269, now seen corresponding path program 11 times [2024-06-28 00:04:25,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:25,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033878657] [2024-06-28 00:04:25,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:25,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:25,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:26,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:26,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:26,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033878657] [2024-06-28 00:04:26,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033878657] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:26,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:26,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:04:26,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799006556] [2024-06-28 00:04:26,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:26,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:04:26,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:26,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:04:26,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:04:26,903 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:04:26,904 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 373 transitions, 5015 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:26,904 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:26,904 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:04:26,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:27,476 INFO L124 PetriNetUnfolderBase]: 801/1449 cut-off events. [2024-06-28 00:04:27,476 INFO L125 PetriNetUnfolderBase]: For 124019/124019 co-relation queries the response was YES. [2024-06-28 00:04:27,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11039 conditions, 1449 events. 801/1449 cut-off events. For 124019/124019 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 8099 event pairs, 97 based on Foata normal form. 2/1451 useless extension candidates. Maximal degree in co-relation 10885. Up to 1310 conditions per place. [2024-06-28 00:04:27,496 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 354 selfloop transitions, 36 changer transitions 0/392 dead transitions. [2024-06-28 00:04:27,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 406 places, 392 transitions, 6129 flow [2024-06-28 00:04:27,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:04:27,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:04:27,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-28 00:04:27,497 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34017595307917886 [2024-06-28 00:04:27,497 INFO L175 Difference]: Start difference. First operand has 396 places, 373 transitions, 5015 flow. Second operand 11 states and 116 transitions. [2024-06-28 00:04:27,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 406 places, 392 transitions, 6129 flow [2024-06-28 00:04:28,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 392 transitions, 6019 flow, removed 30 selfloop flow, removed 8 redundant places. [2024-06-28 00:04:28,075 INFO L231 Difference]: Finished difference. Result has 401 places, 377 transitions, 5107 flow [2024-06-28 00:04:28,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4905, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5107, PETRI_PLACES=401, PETRI_TRANSITIONS=377} [2024-06-28 00:04:28,076 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 371 predicate places. [2024-06-28 00:04:28,076 INFO L495 AbstractCegarLoop]: Abstraction has has 401 places, 377 transitions, 5107 flow [2024-06-28 00:04:28,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:28,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:28,076 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:28,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-28 00:04:28,076 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)] === [2024-06-28 00:04:28,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:28,077 INFO L85 PathProgramCache]: Analyzing trace with hash 645835037, now seen corresponding path program 12 times [2024-06-28 00:04:28,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:28,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417820330] [2024-06-28 00:04:28,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:28,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:28,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:29,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:29,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:29,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417820330] [2024-06-28 00:04:29,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417820330] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:29,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:29,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:04:29,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36002005] [2024-06-28 00:04:29,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:29,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:04:29,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:29,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:04:29,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:04:29,937 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:04:29,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 377 transitions, 5107 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:29,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:29,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:04:29,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:30,505 INFO L124 PetriNetUnfolderBase]: 805/1457 cut-off events. [2024-06-28 00:04:30,505 INFO L125 PetriNetUnfolderBase]: For 126730/126730 co-relation queries the response was YES. [2024-06-28 00:04:30,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11106 conditions, 1457 events. 805/1457 cut-off events. For 126730/126730 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 8168 event pairs, 103 based on Foata normal form. 2/1459 useless extension candidates. Maximal degree in co-relation 10949. Up to 1357 conditions per place. [2024-06-28 00:04:30,523 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 349 selfloop transitions, 39 changer transitions 0/390 dead transitions. [2024-06-28 00:04:30,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 390 transitions, 5954 flow [2024-06-28 00:04:30,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:04:30,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:04:30,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-28 00:04:30,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34838709677419355 [2024-06-28 00:04:30,524 INFO L175 Difference]: Start difference. First operand has 401 places, 377 transitions, 5107 flow. Second operand 10 states and 108 transitions. [2024-06-28 00:04:30,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 390 transitions, 5954 flow [2024-06-28 00:04:31,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 404 places, 390 transitions, 5829 flow, removed 42 selfloop flow, removed 6 redundant places. [2024-06-28 00:04:31,092 INFO L231 Difference]: Finished difference. Result has 405 places, 378 transitions, 5108 flow [2024-06-28 00:04:31,092 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4992, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5108, PETRI_PLACES=405, PETRI_TRANSITIONS=378} [2024-06-28 00:04:31,092 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 375 predicate places. [2024-06-28 00:04:31,092 INFO L495 AbstractCegarLoop]: Abstraction has has 405 places, 378 transitions, 5108 flow [2024-06-28 00:04:31,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:31,093 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:31,093 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:31,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-28 00:04:31,093 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)] === [2024-06-28 00:04:31,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:31,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1963943733, now seen corresponding path program 13 times [2024-06-28 00:04:31,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:31,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011767777] [2024-06-28 00:04:31,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:31,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:31,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:32,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:32,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:32,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011767777] [2024-06-28 00:04:32,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011767777] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:32,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:32,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:04:32,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813511640] [2024-06-28 00:04:32,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:32,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:04:32,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:32,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:04:32,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:04:32,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:04:32,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 378 transitions, 5108 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:32,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:32,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:04:32,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:33,089 INFO L124 PetriNetUnfolderBase]: 802/1452 cut-off events. [2024-06-28 00:04:33,090 INFO L125 PetriNetUnfolderBase]: For 118231/118231 co-relation queries the response was YES. [2024-06-28 00:04:33,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10794 conditions, 1452 events. 802/1452 cut-off events. For 118231/118231 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 8143 event pairs, 100 based on Foata normal form. 2/1454 useless extension candidates. Maximal degree in co-relation 10635. Up to 1336 conditions per place. [2024-06-28 00:04:33,108 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 351 selfloop transitions, 38 changer transitions 0/391 dead transitions. [2024-06-28 00:04:33,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 391 transitions, 5918 flow [2024-06-28 00:04:33,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:04:33,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:04:33,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 114 transitions. [2024-06-28 00:04:33,109 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3343108504398827 [2024-06-28 00:04:33,109 INFO L175 Difference]: Start difference. First operand has 405 places, 378 transitions, 5108 flow. Second operand 11 states and 114 transitions. [2024-06-28 00:04:33,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 391 transitions, 5918 flow [2024-06-28 00:04:33,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 391 transitions, 5799 flow, removed 26 selfloop flow, removed 7 redundant places. [2024-06-28 00:04:33,758 INFO L231 Difference]: Finished difference. Result has 409 places, 378 transitions, 5069 flow [2024-06-28 00:04:33,758 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4989, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5069, PETRI_PLACES=409, PETRI_TRANSITIONS=378} [2024-06-28 00:04:33,759 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 379 predicate places. [2024-06-28 00:04:33,759 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 378 transitions, 5069 flow [2024-06-28 00:04:33,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:33,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:33,759 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:33,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-28 00:04:33,760 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)] === [2024-06-28 00:04:33,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:33,760 INFO L85 PathProgramCache]: Analyzing trace with hash 611958627, now seen corresponding path program 14 times [2024-06-28 00:04:33,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:33,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321737805] [2024-06-28 00:04:33,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:33,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:33,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:35,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:35,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:35,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321737805] [2024-06-28 00:04:35,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321737805] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:35,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:35,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:04:35,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131032155] [2024-06-28 00:04:35,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:35,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:04:35,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:35,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:04:35,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:04:35,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:04:35,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 378 transitions, 5069 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:35,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:35,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:04:35,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:36,164 INFO L124 PetriNetUnfolderBase]: 806/1460 cut-off events. [2024-06-28 00:04:36,164 INFO L125 PetriNetUnfolderBase]: For 120678/120678 co-relation queries the response was YES. [2024-06-28 00:04:36,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10821 conditions, 1460 events. 806/1460 cut-off events. For 120678/120678 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 8223 event pairs, 102 based on Foata normal form. 2/1462 useless extension candidates. Maximal degree in co-relation 10661. Up to 1345 conditions per place. [2024-06-28 00:04:36,182 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 336 selfloop transitions, 53 changer transitions 0/391 dead transitions. [2024-06-28 00:04:36,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 391 transitions, 5915 flow [2024-06-28 00:04:36,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:04:36,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:04:36,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 124 transitions. [2024-06-28 00:04:36,183 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-28 00:04:36,183 INFO L175 Difference]: Start difference. First operand has 409 places, 378 transitions, 5069 flow. Second operand 12 states and 124 transitions. [2024-06-28 00:04:36,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 391 transitions, 5915 flow [2024-06-28 00:04:36,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 391 transitions, 5841 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-28 00:04:36,809 INFO L231 Difference]: Finished difference. Result has 412 places, 379 transitions, 5147 flow [2024-06-28 00:04:36,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4995, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5147, PETRI_PLACES=412, PETRI_TRANSITIONS=379} [2024-06-28 00:04:36,809 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 382 predicate places. [2024-06-28 00:04:36,810 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 379 transitions, 5147 flow [2024-06-28 00:04:36,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:36,810 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:36,810 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:36,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-28 00:04:36,810 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)] === [2024-06-28 00:04:36,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:36,810 INFO L85 PathProgramCache]: Analyzing trace with hash -467382863, now seen corresponding path program 15 times [2024-06-28 00:04:36,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:36,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646936642] [2024-06-28 00:04:36,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:36,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:36,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:38,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:38,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:38,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646936642] [2024-06-28 00:04:38,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646936642] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:38,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:38,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:04:38,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220820430] [2024-06-28 00:04:38,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:38,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:04:38,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:38,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:04:38,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:04:38,603 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:04:38,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 379 transitions, 5147 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:38,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:38,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:04:38,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:39,137 INFO L124 PetriNetUnfolderBase]: 813/1473 cut-off events. [2024-06-28 00:04:39,137 INFO L125 PetriNetUnfolderBase]: For 123641/123641 co-relation queries the response was YES. [2024-06-28 00:04:39,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11002 conditions, 1473 events. 813/1473 cut-off events. For 123641/123641 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 8289 event pairs, 106 based on Foata normal form. 2/1475 useless extension candidates. Maximal degree in co-relation 10842. Up to 1358 conditions per place. [2024-06-28 00:04:39,157 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 342 selfloop transitions, 50 changer transitions 0/394 dead transitions. [2024-06-28 00:04:39,157 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 423 places, 394 transitions, 6021 flow [2024-06-28 00:04:39,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:04:39,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:04:39,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 124 transitions. [2024-06-28 00:04:39,159 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-28 00:04:39,159 INFO L175 Difference]: Start difference. First operand has 412 places, 379 transitions, 5147 flow. Second operand 12 states and 124 transitions. [2024-06-28 00:04:39,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 423 places, 394 transitions, 6021 flow [2024-06-28 00:04:39,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 394 transitions, 5876 flow, removed 20 selfloop flow, removed 10 redundant places. [2024-06-28 00:04:39,728 INFO L231 Difference]: Finished difference. Result has 415 places, 382 transitions, 5177 flow [2024-06-28 00:04:39,728 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5002, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=379, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5177, PETRI_PLACES=415, PETRI_TRANSITIONS=382} [2024-06-28 00:04:39,728 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 385 predicate places. [2024-06-28 00:04:39,728 INFO L495 AbstractCegarLoop]: Abstraction has has 415 places, 382 transitions, 5177 flow [2024-06-28 00:04:39,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:39,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:39,728 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:39,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-28 00:04:39,729 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)] === [2024-06-28 00:04:39,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:39,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1836141445, now seen corresponding path program 16 times [2024-06-28 00:04:39,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:39,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103798161] [2024-06-28 00:04:39,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:39,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:39,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:41,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:41,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:41,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103798161] [2024-06-28 00:04:41,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103798161] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:41,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:41,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:04:41,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820268824] [2024-06-28 00:04:41,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:41,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:04:41,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:41,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:04:41,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:04:41,631 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:04:41,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 382 transitions, 5177 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:41,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:41,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:04:41,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:42,123 INFO L124 PetriNetUnfolderBase]: 828/1502 cut-off events. [2024-06-28 00:04:42,123 INFO L125 PetriNetUnfolderBase]: For 137066/137066 co-relation queries the response was YES. [2024-06-28 00:04:42,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11432 conditions, 1502 events. 828/1502 cut-off events. For 137066/137066 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 8527 event pairs, 103 based on Foata normal form. 2/1504 useless extension candidates. Maximal degree in co-relation 11270. Up to 1314 conditions per place. [2024-06-28 00:04:42,144 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 339 selfloop transitions, 60 changer transitions 0/401 dead transitions. [2024-06-28 00:04:42,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 401 transitions, 6331 flow [2024-06-28 00:04:42,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:04:42,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:04:42,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-28 00:04:42,145 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-28 00:04:42,145 INFO L175 Difference]: Start difference. First operand has 415 places, 382 transitions, 5177 flow. Second operand 11 states and 124 transitions. [2024-06-28 00:04:42,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 401 transitions, 6331 flow [2024-06-28 00:04:42,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 401 transitions, 6198 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-28 00:04:42,865 INFO L231 Difference]: Finished difference. Result has 420 places, 386 transitions, 5311 flow [2024-06-28 00:04:42,865 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5044, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=382, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5311, PETRI_PLACES=420, PETRI_TRANSITIONS=386} [2024-06-28 00:04:42,865 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 390 predicate places. [2024-06-28 00:04:42,866 INFO L495 AbstractCegarLoop]: Abstraction has has 420 places, 386 transitions, 5311 flow [2024-06-28 00:04:42,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:42,866 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:42,866 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:42,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-28 00:04:42,866 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)] === [2024-06-28 00:04:42,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:42,866 INFO L85 PathProgramCache]: Analyzing trace with hash -1831379845, now seen corresponding path program 17 times [2024-06-28 00:04:42,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:42,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118337578] [2024-06-28 00:04:42,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:42,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:42,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:44,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:44,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:44,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118337578] [2024-06-28 00:04:44,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118337578] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:44,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:44,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:04:44,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518908071] [2024-06-28 00:04:44,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:44,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:04:44,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:44,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:04:44,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:04:44,477 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:04:44,477 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 386 transitions, 5311 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:44,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:44,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:04:44,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:44,986 INFO L124 PetriNetUnfolderBase]: 832/1510 cut-off events. [2024-06-28 00:04:44,986 INFO L125 PetriNetUnfolderBase]: For 140213/140213 co-relation queries the response was YES. [2024-06-28 00:04:45,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11563 conditions, 1510 events. 832/1510 cut-off events. For 140213/140213 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 8583 event pairs, 107 based on Foata normal form. 2/1512 useless extension candidates. Maximal degree in co-relation 11398. Up to 1360 conditions per place. [2024-06-28 00:04:45,008 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 342 selfloop transitions, 54 changer transitions 0/398 dead transitions. [2024-06-28 00:04:45,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 398 transitions, 6176 flow [2024-06-28 00:04:45,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:04:45,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:04:45,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-28 00:04:45,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36774193548387096 [2024-06-28 00:04:45,009 INFO L175 Difference]: Start difference. First operand has 420 places, 386 transitions, 5311 flow. Second operand 10 states and 114 transitions. [2024-06-28 00:04:45,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 398 transitions, 6176 flow [2024-06-28 00:04:45,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 424 places, 398 transitions, 6017 flow, removed 52 selfloop flow, removed 5 redundant places. [2024-06-28 00:04:45,690 INFO L231 Difference]: Finished difference. Result has 425 places, 387 transitions, 5313 flow [2024-06-28 00:04:45,690 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5164, PETRI_DIFFERENCE_MINUEND_PLACES=415, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=386, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5313, PETRI_PLACES=425, PETRI_TRANSITIONS=387} [2024-06-28 00:04:45,691 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 395 predicate places. [2024-06-28 00:04:45,691 INFO L495 AbstractCegarLoop]: Abstraction has has 425 places, 387 transitions, 5313 flow [2024-06-28 00:04:45,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:45,691 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:45,691 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:45,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-28 00:04:45,691 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)] === [2024-06-28 00:04:45,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:45,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1665319045, now seen corresponding path program 18 times [2024-06-28 00:04:45,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:45,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934987530] [2024-06-28 00:04:45,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:45,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:45,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:47,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:47,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:47,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934987530] [2024-06-28 00:04:47,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934987530] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:47,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:47,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:04:47,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727384456] [2024-06-28 00:04:47,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:47,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:04:47,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:47,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:04:47,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:04:47,801 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:04:47,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 425 places, 387 transitions, 5313 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:47,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:47,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:04:47,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:48,398 INFO L124 PetriNetUnfolderBase]: 836/1518 cut-off events. [2024-06-28 00:04:48,398 INFO L125 PetriNetUnfolderBase]: For 141212/141212 co-relation queries the response was YES. [2024-06-28 00:04:48,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11563 conditions, 1518 events. 836/1518 cut-off events. For 141212/141212 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 8665 event pairs, 109 based on Foata normal form. 2/1520 useless extension candidates. Maximal degree in co-relation 11396. Up to 1362 conditions per place. [2024-06-28 00:04:48,422 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 339 selfloop transitions, 58 changer transitions 0/399 dead transitions. [2024-06-28 00:04:48,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 434 places, 399 transitions, 6170 flow [2024-06-28 00:04:48,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:04:48,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:04:48,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-28 00:04:48,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36451612903225805 [2024-06-28 00:04:48,424 INFO L175 Difference]: Start difference. First operand has 425 places, 387 transitions, 5313 flow. Second operand 10 states and 113 transitions. [2024-06-28 00:04:48,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 434 places, 399 transitions, 6170 flow [2024-06-28 00:04:49,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 426 places, 399 transitions, 6034 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-28 00:04:49,095 INFO L231 Difference]: Finished difference. Result has 427 places, 388 transitions, 5338 flow [2024-06-28 00:04:49,095 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5177, PETRI_DIFFERENCE_MINUEND_PLACES=417, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5338, PETRI_PLACES=427, PETRI_TRANSITIONS=388} [2024-06-28 00:04:49,096 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 397 predicate places. [2024-06-28 00:04:49,096 INFO L495 AbstractCegarLoop]: Abstraction has has 427 places, 388 transitions, 5338 flow [2024-06-28 00:04:49,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:49,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:49,096 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:49,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-28 00:04:49,096 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)] === [2024-06-28 00:04:49,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:49,097 INFO L85 PathProgramCache]: Analyzing trace with hash -1665323695, now seen corresponding path program 19 times [2024-06-28 00:04:49,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:49,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518215461] [2024-06-28 00:04:49,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:49,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:49,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:50,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:50,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:50,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518215461] [2024-06-28 00:04:50,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518215461] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:50,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:50,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:04:50,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434571376] [2024-06-28 00:04:50,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:50,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:04:50,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:50,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:04:50,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:04:50,785 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:04:50,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 427 places, 388 transitions, 5338 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:50,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:50,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:04:50,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:51,297 INFO L124 PetriNetUnfolderBase]: 844/1534 cut-off events. [2024-06-28 00:04:51,297 INFO L125 PetriNetUnfolderBase]: For 143863/143863 co-relation queries the response was YES. [2024-06-28 00:04:51,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11670 conditions, 1534 events. 844/1534 cut-off events. For 143863/143863 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 8801 event pairs, 109 based on Foata normal form. 2/1536 useless extension candidates. Maximal degree in co-relation 11502. Up to 1384 conditions per place. [2024-06-28 00:04:51,317 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 343 selfloop transitions, 58 changer transitions 0/403 dead transitions. [2024-06-28 00:04:51,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 437 places, 403 transitions, 6215 flow [2024-06-28 00:04:51,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:04:51,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:04:51,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-28 00:04:51,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 00:04:51,318 INFO L175 Difference]: Start difference. First operand has 427 places, 388 transitions, 5338 flow. Second operand 11 states and 121 transitions. [2024-06-28 00:04:51,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 437 places, 403 transitions, 6215 flow [2024-06-28 00:04:51,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 429 places, 403 transitions, 6073 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-28 00:04:51,989 INFO L231 Difference]: Finished difference. Result has 431 places, 390 transitions, 5373 flow [2024-06-28 00:04:51,989 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5196, PETRI_DIFFERENCE_MINUEND_PLACES=419, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5373, PETRI_PLACES=431, PETRI_TRANSITIONS=390} [2024-06-28 00:04:51,990 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 401 predicate places. [2024-06-28 00:04:51,990 INFO L495 AbstractCegarLoop]: Abstraction has has 431 places, 390 transitions, 5373 flow [2024-06-28 00:04:51,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:51,990 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:51,990 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:51,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-28 00:04:51,990 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)] === [2024-06-28 00:04:51,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:51,990 INFO L85 PathProgramCache]: Analyzing trace with hash -150832949, now seen corresponding path program 20 times [2024-06-28 00:04:51,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:51,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104005952] [2024-06-28 00:04:51,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:51,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:52,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:53,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:53,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:53,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104005952] [2024-06-28 00:04:53,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104005952] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:53,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:53,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:04:53,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220709303] [2024-06-28 00:04:53,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:53,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:04:53,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:53,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:04:53,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:04:53,985 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:04:53,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 431 places, 390 transitions, 5373 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:53,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:53,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:04:53,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:54,667 INFO L124 PetriNetUnfolderBase]: 841/1529 cut-off events. [2024-06-28 00:04:54,668 INFO L125 PetriNetUnfolderBase]: For 135465/135465 co-relation queries the response was YES. [2024-06-28 00:04:54,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11420 conditions, 1529 events. 841/1529 cut-off events. For 135465/135465 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 8763 event pairs, 108 based on Foata normal form. 2/1531 useless extension candidates. Maximal degree in co-relation 11250. Up to 1378 conditions per place. [2024-06-28 00:04:54,689 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 343 selfloop transitions, 59 changer transitions 0/404 dead transitions. [2024-06-28 00:04:54,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 404 transitions, 6209 flow [2024-06-28 00:04:54,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:04:54,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:04:54,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2024-06-28 00:04:54,691 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 00:04:54,691 INFO L175 Difference]: Start difference. First operand has 431 places, 390 transitions, 5373 flow. Second operand 12 states and 132 transitions. [2024-06-28 00:04:54,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 442 places, 404 transitions, 6209 flow [2024-06-28 00:04:55,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 404 transitions, 6051 flow, removed 31 selfloop flow, removed 7 redundant places. [2024-06-28 00:04:55,364 INFO L231 Difference]: Finished difference. Result has 436 places, 390 transitions, 5337 flow [2024-06-28 00:04:55,365 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5215, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=390, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5337, PETRI_PLACES=436, PETRI_TRANSITIONS=390} [2024-06-28 00:04:55,365 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 406 predicate places. [2024-06-28 00:04:55,365 INFO L495 AbstractCegarLoop]: Abstraction has has 436 places, 390 transitions, 5337 flow [2024-06-28 00:04:55,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:55,365 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:55,366 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:55,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-28 00:04:55,366 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)] === [2024-06-28 00:04:55,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:55,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1698281981, now seen corresponding path program 2 times [2024-06-28 00:04:55,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:55,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591729668] [2024-06-28 00:04:55,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:55,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:55,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:57,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:57,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:57,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591729668] [2024-06-28 00:04:57,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591729668] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:57,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:57,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:04:57,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792373132] [2024-06-28 00:04:57,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:57,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:04:57,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:57,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:04:57,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:04:57,440 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:04:57,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 436 places, 390 transitions, 5337 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) [2024-06-28 00:04:57,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:57,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:04:57,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:57,951 INFO L124 PetriNetUnfolderBase]: 849/1545 cut-off events. [2024-06-28 00:04:57,951 INFO L125 PetriNetUnfolderBase]: For 148574/148574 co-relation queries the response was YES. [2024-06-28 00:04:57,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11479 conditions, 1545 events. 849/1545 cut-off events. For 148574/148574 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 8850 event pairs, 118 based on Foata normal form. 4/1549 useless extension candidates. Maximal degree in co-relation 11308. Up to 1206 conditions per place. [2024-06-28 00:04:57,973 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 271 selfloop transitions, 132 changer transitions 0/405 dead transitions. [2024-06-28 00:04:57,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 446 places, 405 transitions, 6253 flow [2024-06-28 00:04:57,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:04:57,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:04:57,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-28 00:04:57,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-28 00:04:57,975 INFO L175 Difference]: Start difference. First operand has 436 places, 390 transitions, 5337 flow. Second operand 11 states and 132 transitions. [2024-06-28 00:04:57,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 446 places, 405 transitions, 6253 flow [2024-06-28 00:04:58,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 405 transitions, 6102 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-06-28 00:04:58,710 INFO L231 Difference]: Finished difference. Result has 437 places, 394 transitions, 5553 flow [2024-06-28 00:04:58,710 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5186, PETRI_DIFFERENCE_MINUEND_PLACES=425, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=390, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5553, PETRI_PLACES=437, PETRI_TRANSITIONS=394} [2024-06-28 00:04:58,710 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 407 predicate places. [2024-06-28 00:04:58,711 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 394 transitions, 5553 flow [2024-06-28 00:04:58,711 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) [2024-06-28 00:04:58,711 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:58,711 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:58,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-28 00:04:58,711 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)] === [2024-06-28 00:04:58,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:58,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1616882615, now seen corresponding path program 4 times [2024-06-28 00:04:58,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:58,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262538670] [2024-06-28 00:04:58,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:58,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:58,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:00,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:00,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:00,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262538670] [2024-06-28 00:05:00,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262538670] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:00,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:00,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:05:00,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371508384] [2024-06-28 00:05:00,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:00,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:05:00,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:00,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:05:00,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:05:00,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:05:00,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 394 transitions, 5553 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) [2024-06-28 00:05:00,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:00,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:05:00,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:01,043 INFO L124 PetriNetUnfolderBase]: 858/1560 cut-off events. [2024-06-28 00:05:01,043 INFO L125 PetriNetUnfolderBase]: For 139959/139959 co-relation queries the response was YES. [2024-06-28 00:05:01,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11784 conditions, 1560 events. 858/1560 cut-off events. For 139959/139959 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 8964 event pairs, 116 based on Foata normal form. 2/1562 useless extension candidates. Maximal degree in co-relation 11613. Up to 1224 conditions per place. [2024-06-28 00:05:01,067 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 275 selfloop transitions, 132 changer transitions 0/409 dead transitions. [2024-06-28 00:05:01,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 446 places, 409 transitions, 6473 flow [2024-06-28 00:05:01,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:05:01,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:05:01,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-28 00:05:01,068 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4096774193548387 [2024-06-28 00:05:01,068 INFO L175 Difference]: Start difference. First operand has 437 places, 394 transitions, 5553 flow. Second operand 10 states and 127 transitions. [2024-06-28 00:05:01,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 446 places, 409 transitions, 6473 flow [2024-06-28 00:05:01,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 439 places, 409 transitions, 6222 flow, removed 38 selfloop flow, removed 7 redundant places. [2024-06-28 00:05:01,815 INFO L231 Difference]: Finished difference. Result has 441 places, 398 transitions, 5644 flow [2024-06-28 00:05:01,815 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5302, PETRI_DIFFERENCE_MINUEND_PLACES=430, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=394, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5644, PETRI_PLACES=441, PETRI_TRANSITIONS=398} [2024-06-28 00:05:01,815 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 411 predicate places. [2024-06-28 00:05:01,815 INFO L495 AbstractCegarLoop]: Abstraction has has 441 places, 398 transitions, 5644 flow [2024-06-28 00:05:01,815 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) [2024-06-28 00:05:01,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:01,815 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:01,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-28 00:05:01,816 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)] === [2024-06-28 00:05:01,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:01,816 INFO L85 PathProgramCache]: Analyzing trace with hash -2009584907, now seen corresponding path program 21 times [2024-06-28 00:05:01,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:01,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894592792] [2024-06-28 00:05:01,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:01,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:01,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:03,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:03,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:03,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894592792] [2024-06-28 00:05:03,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894592792] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:03,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:03,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:05:03,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189381207] [2024-06-28 00:05:03,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:03,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:05:03,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:03,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:05:03,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:05:03,466 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:05:03,466 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 441 places, 398 transitions, 5644 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:03,466 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:03,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:05:03,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:03,961 INFO L124 PetriNetUnfolderBase]: 862/1568 cut-off events. [2024-06-28 00:05:03,962 INFO L125 PetriNetUnfolderBase]: For 143558/143558 co-relation queries the response was YES. [2024-06-28 00:05:03,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12015 conditions, 1568 events. 862/1568 cut-off events. For 143558/143558 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 9020 event pairs, 116 based on Foata normal form. 2/1570 useless extension candidates. Maximal degree in co-relation 11842. Up to 1200 conditions per place. [2024-06-28 00:05:03,983 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 286 selfloop transitions, 121 changer transitions 0/409 dead transitions. [2024-06-28 00:05:03,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 451 places, 409 transitions, 6526 flow [2024-06-28 00:05:03,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:05:03,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:05:03,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-28 00:05:03,984 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 00:05:03,984 INFO L175 Difference]: Start difference. First operand has 441 places, 398 transitions, 5644 flow. Second operand 11 states and 121 transitions. [2024-06-28 00:05:03,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 451 places, 409 transitions, 6526 flow [2024-06-28 00:05:04,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 444 places, 409 transitions, 6226 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-28 00:05:04,750 INFO L231 Difference]: Finished difference. Result has 445 places, 399 transitions, 5638 flow [2024-06-28 00:05:04,750 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5344, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5638, PETRI_PLACES=445, PETRI_TRANSITIONS=399} [2024-06-28 00:05:04,751 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 415 predicate places. [2024-06-28 00:05:04,751 INFO L495 AbstractCegarLoop]: Abstraction has has 445 places, 399 transitions, 5638 flow [2024-06-28 00:05:04,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:04,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:04,751 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:04,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-28 00:05:04,751 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)] === [2024-06-28 00:05:04,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:04,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1698035717, now seen corresponding path program 22 times [2024-06-28 00:05:04,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:04,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198356530] [2024-06-28 00:05:04,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:04,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:04,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:06,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:06,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:06,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198356530] [2024-06-28 00:05:06,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198356530] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:06,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:06,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:05:06,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496857089] [2024-06-28 00:05:06,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:06,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:05:06,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:06,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:05:06,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:05:06,386 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:05:06,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 399 transitions, 5638 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:06,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:06,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:05:06,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:06,898 INFO L124 PetriNetUnfolderBase]: 866/1576 cut-off events. [2024-06-28 00:05:06,899 INFO L125 PetriNetUnfolderBase]: For 147074/147074 co-relation queries the response was YES. [2024-06-28 00:05:06,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12054 conditions, 1576 events. 866/1576 cut-off events. For 147074/147074 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 9055 event pairs, 116 based on Foata normal form. 2/1578 useless extension candidates. Maximal degree in co-relation 11879. Up to 1208 conditions per place. [2024-06-28 00:05:06,919 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 248 selfloop transitions, 160 changer transitions 0/410 dead transitions. [2024-06-28 00:05:06,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 410 transitions, 6524 flow [2024-06-28 00:05:06,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:05:06,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:05:06,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-28 00:05:06,920 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34310850439882695 [2024-06-28 00:05:06,920 INFO L175 Difference]: Start difference. First operand has 445 places, 399 transitions, 5638 flow. Second operand 11 states and 117 transitions. [2024-06-28 00:05:06,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 410 transitions, 6524 flow [2024-06-28 00:05:07,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 446 places, 410 transitions, 6240 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-06-28 00:05:07,720 INFO L231 Difference]: Finished difference. Result has 447 places, 400 transitions, 5728 flow [2024-06-28 00:05:07,720 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5354, PETRI_DIFFERENCE_MINUEND_PLACES=436, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=159, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5728, PETRI_PLACES=447, PETRI_TRANSITIONS=400} [2024-06-28 00:05:07,721 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 417 predicate places. [2024-06-28 00:05:07,721 INFO L495 AbstractCegarLoop]: Abstraction has has 447 places, 400 transitions, 5728 flow [2024-06-28 00:05:07,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:07,721 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:07,721 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:07,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-28 00:05:07,721 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)] === [2024-06-28 00:05:07,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:07,721 INFO L85 PathProgramCache]: Analyzing trace with hash -1927939587, now seen corresponding path program 3 times [2024-06-28 00:05:07,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:07,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133096129] [2024-06-28 00:05:07,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:07,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:07,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:09,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:09,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:09,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133096129] [2024-06-28 00:05:09,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133096129] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:09,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:09,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:05:09,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887966755] [2024-06-28 00:05:09,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:09,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:05:09,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:09,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:05:09,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:05:09,800 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:05:09,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 447 places, 400 transitions, 5728 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) [2024-06-28 00:05:09,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:09,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:05:09,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:10,323 INFO L124 PetriNetUnfolderBase]: 874/1592 cut-off events. [2024-06-28 00:05:10,323 INFO L125 PetriNetUnfolderBase]: For 161207/161207 co-relation queries the response was YES. [2024-06-28 00:05:10,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12227 conditions, 1592 events. 874/1592 cut-off events. For 161207/161207 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 9167 event pairs, 120 based on Foata normal form. 4/1596 useless extension candidates. Maximal degree in co-relation 12051. Up to 1249 conditions per place. [2024-06-28 00:05:10,346 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 305 selfloop transitions, 108 changer transitions 0/415 dead transitions. [2024-06-28 00:05:10,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 457 places, 415 transitions, 6670 flow [2024-06-28 00:05:10,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:05:10,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:05:10,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-28 00:05:10,347 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-28 00:05:10,347 INFO L175 Difference]: Start difference. First operand has 447 places, 400 transitions, 5728 flow. Second operand 11 states and 132 transitions. [2024-06-28 00:05:10,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 457 places, 415 transitions, 6670 flow [2024-06-28 00:05:11,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 448 places, 415 transitions, 6306 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-28 00:05:11,151 INFO L231 Difference]: Finished difference. Result has 450 places, 404 transitions, 5691 flow [2024-06-28 00:05:11,151 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5364, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=400, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5691, PETRI_PLACES=450, PETRI_TRANSITIONS=404} [2024-06-28 00:05:11,151 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 420 predicate places. [2024-06-28 00:05:11,151 INFO L495 AbstractCegarLoop]: Abstraction has has 450 places, 404 transitions, 5691 flow [2024-06-28 00:05:11,151 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) [2024-06-28 00:05:11,151 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:11,152 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:11,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-28 00:05:11,152 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)] === [2024-06-28 00:05:11,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:11,152 INFO L85 PathProgramCache]: Analyzing trace with hash -2105322021, now seen corresponding path program 23 times [2024-06-28 00:05:11,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:11,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170664940] [2024-06-28 00:05:11,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:11,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:11,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:12,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:12,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:12,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170664940] [2024-06-28 00:05:12,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170664940] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:12,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:12,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:05:12,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781874914] [2024-06-28 00:05:12,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:12,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:05:12,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:12,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:05:12,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:05:12,830 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:05:12,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 450 places, 404 transitions, 5691 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:12,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:12,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:05:12,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:13,491 INFO L124 PetriNetUnfolderBase]: 889/1621 cut-off events. [2024-06-28 00:05:13,492 INFO L125 PetriNetUnfolderBase]: For 165143/165143 co-relation queries the response was YES. [2024-06-28 00:05:13,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12640 conditions, 1621 events. 889/1621 cut-off events. For 165143/165143 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 9422 event pairs, 117 based on Foata normal form. 2/1623 useless extension candidates. Maximal degree in co-relation 12462. Up to 1236 conditions per place. [2024-06-28 00:05:13,511 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 295 selfloop transitions, 122 changer transitions 0/419 dead transitions. [2024-06-28 00:05:13,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 460 places, 419 transitions, 6873 flow [2024-06-28 00:05:13,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:05:13,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:05:13,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-28 00:05:13,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 00:05:13,512 INFO L175 Difference]: Start difference. First operand has 450 places, 404 transitions, 5691 flow. Second operand 11 states and 121 transitions. [2024-06-28 00:05:13,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 460 places, 419 transitions, 6873 flow [2024-06-28 00:05:14,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 453 places, 419 transitions, 6664 flow, removed 41 selfloop flow, removed 7 redundant places. [2024-06-28 00:05:14,254 INFO L231 Difference]: Finished difference. Result has 455 places, 407 transitions, 5842 flow [2024-06-28 00:05:14,254 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5482, PETRI_DIFFERENCE_MINUEND_PLACES=443, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=404, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5842, PETRI_PLACES=455, PETRI_TRANSITIONS=407} [2024-06-28 00:05:14,254 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 425 predicate places. [2024-06-28 00:05:14,254 INFO L495 AbstractCegarLoop]: Abstraction has has 455 places, 407 transitions, 5842 flow [2024-06-28 00:05:14,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:14,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:14,254 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:14,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-28 00:05:14,255 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)] === [2024-06-28 00:05:14,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:14,255 INFO L85 PathProgramCache]: Analyzing trace with hash 548190433, now seen corresponding path program 2 times [2024-06-28 00:05:14,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:14,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670318894] [2024-06-28 00:05:14,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:14,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:14,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:15,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:15,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:15,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670318894] [2024-06-28 00:05:15,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670318894] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:15,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:15,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:05:15,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428477922] [2024-06-28 00:05:15,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:15,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:05:15,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:15,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:05:15,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:05:15,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:05:15,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 455 places, 407 transitions, 5842 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 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) [2024-06-28 00:05:15,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:15,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:05:15,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:16,274 INFO L124 PetriNetUnfolderBase]: 886/1616 cut-off events. [2024-06-28 00:05:16,274 INFO L125 PetriNetUnfolderBase]: For 155448/155448 co-relation queries the response was YES. [2024-06-28 00:05:16,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12619 conditions, 1616 events. 886/1616 cut-off events. For 155448/155448 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 9366 event pairs, 119 based on Foata normal form. 1/1617 useless extension candidates. Maximal degree in co-relation 12438. Up to 1088 conditions per place. [2024-06-28 00:05:16,310 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 247 selfloop transitions, 169 changer transitions 0/418 dead transitions. [2024-06-28 00:05:16,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 464 places, 418 transitions, 7138 flow [2024-06-28 00:05:16,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:05:16,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:05:16,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-28 00:05:16,311 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4064516129032258 [2024-06-28 00:05:16,311 INFO L175 Difference]: Start difference. First operand has 455 places, 407 transitions, 5842 flow. Second operand 10 states and 126 transitions. [2024-06-28 00:05:16,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 464 places, 418 transitions, 7138 flow [2024-06-28 00:05:17,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 457 places, 418 transitions, 6919 flow, removed 37 selfloop flow, removed 7 redundant places. [2024-06-28 00:05:17,062 INFO L231 Difference]: Finished difference. Result has 458 places, 407 transitions, 5967 flow [2024-06-28 00:05:17,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5623, PETRI_DIFFERENCE_MINUEND_PLACES=448, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=407, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=169, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5967, PETRI_PLACES=458, PETRI_TRANSITIONS=407} [2024-06-28 00:05:17,062 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 428 predicate places. [2024-06-28 00:05:17,062 INFO L495 AbstractCegarLoop]: Abstraction has has 458 places, 407 transitions, 5967 flow [2024-06-28 00:05:17,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 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) [2024-06-28 00:05:17,062 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:17,062 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:17,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-28 00:05:17,063 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)] === [2024-06-28 00:05:17,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:17,063 INFO L85 PathProgramCache]: Analyzing trace with hash 326545393, now seen corresponding path program 3 times [2024-06-28 00:05:17,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:17,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525554276] [2024-06-28 00:05:17,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:17,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:17,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:18,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:18,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:18,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525554276] [2024-06-28 00:05:18,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525554276] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:18,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:18,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:05:18,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057537006] [2024-06-28 00:05:18,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:18,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:05:18,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:18,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:05:18,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:05:18,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:05:18,653 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 458 places, 407 transitions, 5967 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 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) [2024-06-28 00:05:18,653 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:18,653 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:05:18,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:19,148 INFO L124 PetriNetUnfolderBase]: 884/1613 cut-off events. [2024-06-28 00:05:19,148 INFO L125 PetriNetUnfolderBase]: For 150215/150215 co-relation queries the response was YES. [2024-06-28 00:05:19,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12669 conditions, 1613 events. 884/1613 cut-off events. For 150215/150215 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 9357 event pairs, 121 based on Foata normal form. 1/1614 useless extension candidates. Maximal degree in co-relation 12486. Up to 1086 conditions per place. [2024-06-28 00:05:19,170 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 270 selfloop transitions, 146 changer transitions 0/418 dead transitions. [2024-06-28 00:05:19,170 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 467 places, 418 transitions, 7267 flow [2024-06-28 00:05:19,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:05:19,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:05:19,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-28 00:05:19,171 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4096774193548387 [2024-06-28 00:05:19,171 INFO L175 Difference]: Start difference. First operand has 458 places, 407 transitions, 5967 flow. Second operand 10 states and 127 transitions. [2024-06-28 00:05:19,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 467 places, 418 transitions, 7267 flow [2024-06-28 00:05:19,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 457 places, 418 transitions, 6902 flow, removed 9 selfloop flow, removed 10 redundant places. [2024-06-28 00:05:19,917 INFO L231 Difference]: Finished difference. Result has 458 places, 407 transitions, 5904 flow [2024-06-28 00:05:19,917 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5606, PETRI_DIFFERENCE_MINUEND_PLACES=448, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=407, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5904, PETRI_PLACES=458, PETRI_TRANSITIONS=407} [2024-06-28 00:05:19,917 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 428 predicate places. [2024-06-28 00:05:19,917 INFO L495 AbstractCegarLoop]: Abstraction has has 458 places, 407 transitions, 5904 flow [2024-06-28 00:05:19,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 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) [2024-06-28 00:05:19,917 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:19,918 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:19,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-28 00:05:19,918 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)] === [2024-06-28 00:05:19,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:19,918 INFO L85 PathProgramCache]: Analyzing trace with hash -1934619591, now seen corresponding path program 24 times [2024-06-28 00:05:19,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:19,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691812268] [2024-06-28 00:05:19,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:19,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:19,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:21,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:21,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:21,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691812268] [2024-06-28 00:05:21,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691812268] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:21,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:21,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:05:21,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463973180] [2024-06-28 00:05:21,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:21,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:05:21,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:21,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:05:21,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:05:21,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:05:21,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 458 places, 407 transitions, 5904 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:21,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:21,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:05:21,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:22,130 INFO L124 PetriNetUnfolderBase]: 899/1642 cut-off events. [2024-06-28 00:05:22,130 INFO L125 PetriNetUnfolderBase]: For 171069/171069 co-relation queries the response was YES. [2024-06-28 00:05:22,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13147 conditions, 1642 events. 899/1642 cut-off events. For 171069/171069 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 9600 event pairs, 124 based on Foata normal form. 2/1644 useless extension candidates. Maximal degree in co-relation 12964. Up to 1251 conditions per place. [2024-06-28 00:05:22,155 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 300 selfloop transitions, 120 changer transitions 0/422 dead transitions. [2024-06-28 00:05:22,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 468 places, 422 transitions, 7102 flow [2024-06-28 00:05:22,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:05:22,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:05:22,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-28 00:05:22,156 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36070381231671556 [2024-06-28 00:05:22,157 INFO L175 Difference]: Start difference. First operand has 458 places, 407 transitions, 5904 flow. Second operand 11 states and 123 transitions. [2024-06-28 00:05:22,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 468 places, 422 transitions, 7102 flow [2024-06-28 00:05:22,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 458 places, 422 transitions, 6797 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-28 00:05:22,956 INFO L231 Difference]: Finished difference. Result has 460 places, 410 transitions, 5965 flow [2024-06-28 00:05:22,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5601, PETRI_DIFFERENCE_MINUEND_PLACES=448, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=407, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5965, PETRI_PLACES=460, PETRI_TRANSITIONS=410} [2024-06-28 00:05:22,956 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 430 predicate places. [2024-06-28 00:05:22,956 INFO L495 AbstractCegarLoop]: Abstraction has has 460 places, 410 transitions, 5965 flow [2024-06-28 00:05:22,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:22,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:22,957 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:22,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-28 00:05:22,957 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)] === [2024-06-28 00:05:22,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:22,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1934614941, now seen corresponding path program 25 times [2024-06-28 00:05:22,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:22,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225572254] [2024-06-28 00:05:22,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:22,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:22,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:24,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:24,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:24,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225572254] [2024-06-28 00:05:24,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225572254] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:24,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:24,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:05:24,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413864002] [2024-06-28 00:05:24,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:24,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:05:24,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:24,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:05:24,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:05:24,897 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:05:24,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 460 places, 410 transitions, 5965 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:24,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:24,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:05:24,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:25,536 INFO L124 PetriNetUnfolderBase]: 896/1637 cut-off events. [2024-06-28 00:05:25,536 INFO L125 PetriNetUnfolderBase]: For 158913/158913 co-relation queries the response was YES. [2024-06-28 00:05:25,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12832 conditions, 1637 events. 896/1637 cut-off events. For 158913/158913 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 9565 event pairs, 125 based on Foata normal form. 2/1639 useless extension candidates. Maximal degree in co-relation 12648. Up to 1269 conditions per place. [2024-06-28 00:05:25,559 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 299 selfloop transitions, 119 changer transitions 0/420 dead transitions. [2024-06-28 00:05:25,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 470 places, 420 transitions, 6823 flow [2024-06-28 00:05:25,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:05:25,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:05:25,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-28 00:05:25,560 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35777126099706746 [2024-06-28 00:05:25,560 INFO L175 Difference]: Start difference. First operand has 460 places, 410 transitions, 5965 flow. Second operand 11 states and 122 transitions. [2024-06-28 00:05:25,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 470 places, 420 transitions, 6823 flow [2024-06-28 00:05:26,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 463 places, 420 transitions, 6584 flow, removed 50 selfloop flow, removed 7 redundant places. [2024-06-28 00:05:26,380 INFO L231 Difference]: Finished difference. Result has 464 places, 410 transitions, 5968 flow [2024-06-28 00:05:26,380 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5726, PETRI_DIFFERENCE_MINUEND_PLACES=453, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=410, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5968, PETRI_PLACES=464, PETRI_TRANSITIONS=410} [2024-06-28 00:05:26,380 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 434 predicate places. [2024-06-28 00:05:26,380 INFO L495 AbstractCegarLoop]: Abstraction has has 464 places, 410 transitions, 5968 flow [2024-06-28 00:05:26,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:26,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:26,381 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:26,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-28 00:05:26,381 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)] === [2024-06-28 00:05:26,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:26,381 INFO L85 PathProgramCache]: Analyzing trace with hash -2009347571, now seen corresponding path program 4 times [2024-06-28 00:05:26,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:26,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339148717] [2024-06-28 00:05:26,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:26,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:26,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:27,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:27,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:27,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339148717] [2024-06-28 00:05:27,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339148717] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:27,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:27,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:05:27,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008441404] [2024-06-28 00:05:27,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:27,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:05:27,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:27,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:05:27,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:05:27,972 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:05:27,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 464 places, 410 transitions, 5968 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 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) [2024-06-28 00:05:27,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:27,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:05:27,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:28,432 INFO L124 PetriNetUnfolderBase]: 894/1634 cut-off events. [2024-06-28 00:05:28,433 INFO L125 PetriNetUnfolderBase]: For 146608/146608 co-relation queries the response was YES. [2024-06-28 00:05:28,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12728 conditions, 1634 events. 894/1634 cut-off events. For 146608/146608 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 9532 event pairs, 125 based on Foata normal form. 1/1635 useless extension candidates. Maximal degree in co-relation 12542. Up to 1108 conditions per place. [2024-06-28 00:05:28,456 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 285 selfloop transitions, 133 changer transitions 0/420 dead transitions. [2024-06-28 00:05:28,456 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 472 places, 420 transitions, 7050 flow [2024-06-28 00:05:28,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:05:28,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:05:28,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 121 transitions. [2024-06-28 00:05:28,457 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4336917562724014 [2024-06-28 00:05:28,457 INFO L175 Difference]: Start difference. First operand has 464 places, 410 transitions, 5968 flow. Second operand 9 states and 121 transitions. [2024-06-28 00:05:28,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 472 places, 420 transitions, 7050 flow [2024-06-28 00:05:29,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 463 places, 420 transitions, 6800 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-28 00:05:29,154 INFO L231 Difference]: Finished difference. Result has 464 places, 410 transitions, 5990 flow [2024-06-28 00:05:29,154 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5718, PETRI_DIFFERENCE_MINUEND_PLACES=455, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=410, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5990, PETRI_PLACES=464, PETRI_TRANSITIONS=410} [2024-06-28 00:05:29,154 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 434 predicate places. [2024-06-28 00:05:29,154 INFO L495 AbstractCegarLoop]: Abstraction has has 464 places, 410 transitions, 5990 flow [2024-06-28 00:05:29,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 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) [2024-06-28 00:05:29,154 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:29,155 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:29,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-28 00:05:29,155 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)] === [2024-06-28 00:05:29,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:29,155 INFO L85 PathProgramCache]: Analyzing trace with hash -2009338953, now seen corresponding path program 5 times [2024-06-28 00:05:29,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:29,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310202264] [2024-06-28 00:05:29,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:29,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:29,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:31,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:31,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:31,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310202264] [2024-06-28 00:05:31,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310202264] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:31,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:31,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:05:31,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122568093] [2024-06-28 00:05:31,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:31,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:05:31,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:31,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:05:31,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:05:31,200 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:05:31,201 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 464 places, 410 transitions, 5990 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) [2024-06-28 00:05:31,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:31,201 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:05:31,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:31,720 INFO L124 PetriNetUnfolderBase]: 900/1644 cut-off events. [2024-06-28 00:05:31,721 INFO L125 PetriNetUnfolderBase]: For 155063/155063 co-relation queries the response was YES. [2024-06-28 00:05:31,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12891 conditions, 1644 events. 900/1644 cut-off events. For 155063/155063 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 9626 event pairs, 125 based on Foata normal form. 2/1646 useless extension candidates. Maximal degree in co-relation 12705. Up to 1304 conditions per place. [2024-06-28 00:05:31,755 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 313 selfloop transitions, 108 changer transitions 0/423 dead transitions. [2024-06-28 00:05:31,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 473 places, 423 transitions, 6934 flow [2024-06-28 00:05:31,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:05:31,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:05:31,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-28 00:05:31,756 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4096774193548387 [2024-06-28 00:05:31,756 INFO L175 Difference]: Start difference. First operand has 464 places, 410 transitions, 5990 flow. Second operand 10 states and 127 transitions. [2024-06-28 00:05:31,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 473 places, 423 transitions, 6934 flow [2024-06-28 00:05:32,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 464 places, 423 transitions, 6657 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-28 00:05:32,684 INFO L231 Difference]: Finished difference. Result has 465 places, 412 transitions, 5990 flow [2024-06-28 00:05:32,684 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5713, PETRI_DIFFERENCE_MINUEND_PLACES=455, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=410, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5990, PETRI_PLACES=465, PETRI_TRANSITIONS=412} [2024-06-28 00:05:32,684 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 435 predicate places. [2024-06-28 00:05:32,684 INFO L495 AbstractCegarLoop]: Abstraction has has 465 places, 412 transitions, 5990 flow [2024-06-28 00:05:32,684 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) [2024-06-28 00:05:32,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:32,685 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:32,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-28 00:05:32,685 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)] === [2024-06-28 00:05:32,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:32,685 INFO L85 PathProgramCache]: Analyzing trace with hash 2112719519, now seen corresponding path program 26 times [2024-06-28 00:05:32,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:32,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884951242] [2024-06-28 00:05:32,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:32,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:32,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:34,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:34,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:34,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884951242] [2024-06-28 00:05:34,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884951242] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:34,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:34,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:05:34,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375986106] [2024-06-28 00:05:34,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:34,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:05:34,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:34,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:05:34,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:05:34,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:05:34,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 465 places, 412 transitions, 5990 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:34,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:34,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:05:34,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:35,244 INFO L124 PetriNetUnfolderBase]: 897/1639 cut-off events. [2024-06-28 00:05:35,245 INFO L125 PetriNetUnfolderBase]: For 142874/142874 co-relation queries the response was YES. [2024-06-28 00:05:35,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12602 conditions, 1639 events. 897/1639 cut-off events. For 142874/142874 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 9595 event pairs, 124 based on Foata normal form. 2/1641 useless extension candidates. Maximal degree in co-relation 12416. Up to 1271 conditions per place. [2024-06-28 00:05:35,267 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 298 selfloop transitions, 122 changer transitions 0/422 dead transitions. [2024-06-28 00:05:35,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 475 places, 422 transitions, 6852 flow [2024-06-28 00:05:35,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:05:35,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:05:35,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-28 00:05:35,267 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3489736070381232 [2024-06-28 00:05:35,267 INFO L175 Difference]: Start difference. First operand has 465 places, 412 transitions, 5990 flow. Second operand 11 states and 119 transitions. [2024-06-28 00:05:35,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 475 places, 422 transitions, 6852 flow [2024-06-28 00:05:35,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 467 places, 422 transitions, 6557 flow, removed 41 selfloop flow, removed 8 redundant places. [2024-06-28 00:05:35,982 INFO L231 Difference]: Finished difference. Result has 468 places, 412 transitions, 5943 flow [2024-06-28 00:05:35,982 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5695, PETRI_DIFFERENCE_MINUEND_PLACES=457, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=412, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5943, PETRI_PLACES=468, PETRI_TRANSITIONS=412} [2024-06-28 00:05:35,982 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 438 predicate places. [2024-06-28 00:05:35,983 INFO L495 AbstractCegarLoop]: Abstraction has has 468 places, 412 transitions, 5943 flow [2024-06-28 00:05:35,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:35,983 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:35,983 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:35,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-28 00:05:35,983 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)] === [2024-06-28 00:05:35,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:35,983 INFO L85 PathProgramCache]: Analyzing trace with hash 2108130899, now seen corresponding path program 27 times [2024-06-28 00:05:35,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:35,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999324242] [2024-06-28 00:05:35,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:35,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:35,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:37,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:37,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:37,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999324242] [2024-06-28 00:05:37,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999324242] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:37,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:37,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:05:37,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127359147] [2024-06-28 00:05:37,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:37,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:05:37,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:37,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:05:37,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:05:37,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:05:37,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 468 places, 412 transitions, 5943 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:37,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:37,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:05:37,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:38,191 INFO L124 PetriNetUnfolderBase]: 905/1655 cut-off events. [2024-06-28 00:05:38,191 INFO L125 PetriNetUnfolderBase]: For 145675/145675 co-relation queries the response was YES. [2024-06-28 00:05:38,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12645 conditions, 1655 events. 905/1655 cut-off events. For 145675/145675 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 9725 event pairs, 120 based on Foata normal form. 2/1657 useless extension candidates. Maximal degree in co-relation 12457. Up to 1198 conditions per place. [2024-06-28 00:05:38,215 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 298 selfloop transitions, 127 changer transitions 0/427 dead transitions. [2024-06-28 00:05:38,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 478 places, 427 transitions, 7111 flow [2024-06-28 00:05:38,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:05:38,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:05:38,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-28 00:05:38,216 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3519061583577713 [2024-06-28 00:05:38,216 INFO L175 Difference]: Start difference. First operand has 468 places, 412 transitions, 5943 flow. Second operand 11 states and 120 transitions. [2024-06-28 00:05:38,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 478 places, 427 transitions, 7111 flow [2024-06-28 00:05:38,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 469 places, 427 transitions, 6869 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-28 00:05:38,986 INFO L231 Difference]: Finished difference. Result has 471 places, 414 transitions, 6025 flow [2024-06-28 00:05:38,987 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5701, PETRI_DIFFERENCE_MINUEND_PLACES=459, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=412, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6025, PETRI_PLACES=471, PETRI_TRANSITIONS=414} [2024-06-28 00:05:38,987 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 441 predicate places. [2024-06-28 00:05:38,987 INFO L495 AbstractCegarLoop]: Abstraction has has 471 places, 414 transitions, 6025 flow [2024-06-28 00:05:38,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:38,987 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:38,987 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:38,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-28 00:05:38,987 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)] === [2024-06-28 00:05:38,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:38,988 INFO L85 PathProgramCache]: Analyzing trace with hash -2039665589, now seen corresponding path program 4 times [2024-06-28 00:05:38,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:38,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347712442] [2024-06-28 00:05:38,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:38,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:39,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:40,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:40,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:40,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347712442] [2024-06-28 00:05:40,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347712442] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:40,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:40,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:05:40,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479087838] [2024-06-28 00:05:40,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:40,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:05:40,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:40,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:05:40,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:05:41,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:05:41,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 471 places, 414 transitions, 6025 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) [2024-06-28 00:05:41,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:41,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:05:41,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:41,619 INFO L124 PetriNetUnfolderBase]: 913/1671 cut-off events. [2024-06-28 00:05:41,619 INFO L125 PetriNetUnfolderBase]: For 162666/162666 co-relation queries the response was YES. [2024-06-28 00:05:41,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12866 conditions, 1671 events. 913/1671 cut-off events. For 162666/162666 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 9850 event pairs, 128 based on Foata normal form. 4/1675 useless extension candidates. Maximal degree in co-relation 12676. Up to 1330 conditions per place. [2024-06-28 00:05:41,646 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 310 selfloop transitions, 117 changer transitions 0/429 dead transitions. [2024-06-28 00:05:41,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 481 places, 429 transitions, 7001 flow [2024-06-28 00:05:41,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:05:41,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:05:41,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-28 00:05:41,647 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-28 00:05:41,647 INFO L175 Difference]: Start difference. First operand has 471 places, 414 transitions, 6025 flow. Second operand 11 states and 132 transitions. [2024-06-28 00:05:41,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 481 places, 429 transitions, 7001 flow [2024-06-28 00:05:42,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 465 places, 429 transitions, 6545 flow, removed 51 selfloop flow, removed 16 redundant places. [2024-06-28 00:05:42,470 INFO L231 Difference]: Finished difference. Result has 467 places, 418 transitions, 5919 flow [2024-06-28 00:05:42,470 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5569, PETRI_DIFFERENCE_MINUEND_PLACES=455, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=414, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5919, PETRI_PLACES=467, PETRI_TRANSITIONS=418} [2024-06-28 00:05:42,470 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 437 predicate places. [2024-06-28 00:05:42,471 INFO L495 AbstractCegarLoop]: Abstraction has has 467 places, 418 transitions, 5919 flow [2024-06-28 00:05:42,471 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) [2024-06-28 00:05:42,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:42,471 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:42,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-28 00:05:42,471 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)] === [2024-06-28 00:05:42,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:42,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1912458315, now seen corresponding path program 5 times [2024-06-28 00:05:42,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:42,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861742543] [2024-06-28 00:05:42,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:42,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:42,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:44,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:44,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:44,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861742543] [2024-06-28 00:05:44,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861742543] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:44,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:44,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:05:44,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67009596] [2024-06-28 00:05:44,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:44,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:05:44,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:44,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:05:44,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:05:44,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:05:44,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 467 places, 418 transitions, 5919 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:44,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:44,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:05:44,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:44,912 INFO L124 PetriNetUnfolderBase]: 924/1692 cut-off events. [2024-06-28 00:05:44,913 INFO L125 PetriNetUnfolderBase]: For 162329/162329 co-relation queries the response was YES. [2024-06-28 00:05:44,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12903 conditions, 1692 events. 924/1692 cut-off events. For 162329/162329 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 10004 event pairs, 270 based on Foata normal form. 2/1694 useless extension candidates. Maximal degree in co-relation 12720. Up to 1615 conditions per place. [2024-06-28 00:05:44,937 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 407 selfloop transitions, 27 changer transitions 0/436 dead transitions. [2024-06-28 00:05:44,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 478 places, 436 transitions, 7153 flow [2024-06-28 00:05:44,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:05:44,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:05:44,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 117 transitions. [2024-06-28 00:05:44,938 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31451612903225806 [2024-06-28 00:05:44,938 INFO L175 Difference]: Start difference. First operand has 467 places, 418 transitions, 5919 flow. Second operand 12 states and 117 transitions. [2024-06-28 00:05:44,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 478 places, 436 transitions, 7153 flow [2024-06-28 00:05:45,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 471 places, 436 transitions, 6920 flow, removed 44 selfloop flow, removed 7 redundant places. [2024-06-28 00:05:45,795 INFO L231 Difference]: Finished difference. Result has 473 places, 422 transitions, 5861 flow [2024-06-28 00:05:45,796 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5686, PETRI_DIFFERENCE_MINUEND_PLACES=460, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=393, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5861, PETRI_PLACES=473, PETRI_TRANSITIONS=422} [2024-06-28 00:05:45,796 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 443 predicate places. [2024-06-28 00:05:45,796 INFO L495 AbstractCegarLoop]: Abstraction has has 473 places, 422 transitions, 5861 flow [2024-06-28 00:05:45,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:45,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:45,796 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:45,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-28 00:05:45,796 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)] === [2024-06-28 00:05:45,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:45,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1958266843, now seen corresponding path program 6 times [2024-06-28 00:05:45,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:45,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712986969] [2024-06-28 00:05:45,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:45,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:45,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:47,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:47,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:47,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712986969] [2024-06-28 00:05:47,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712986969] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:47,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:47,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:05:47,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424428712] [2024-06-28 00:05:47,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:47,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:05:47,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:47,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:05:47,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:05:47,703 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:05:47,703 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 473 places, 422 transitions, 5861 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) [2024-06-28 00:05:47,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:47,703 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:05:47,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:48,207 INFO L124 PetriNetUnfolderBase]: 930/1702 cut-off events. [2024-06-28 00:05:48,207 INFO L125 PetriNetUnfolderBase]: For 164398/164398 co-relation queries the response was YES. [2024-06-28 00:05:48,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12938 conditions, 1702 events. 930/1702 cut-off events. For 164398/164398 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 10059 event pairs, 129 based on Foata normal form. 2/1704 useless extension candidates. Maximal degree in co-relation 12752. Up to 1364 conditions per place. [2024-06-28 00:05:48,229 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 316 selfloop transitions, 117 changer transitions 0/435 dead transitions. [2024-06-28 00:05:48,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 482 places, 435 transitions, 6837 flow [2024-06-28 00:05:48,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:05:48,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:05:48,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-28 00:05:48,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4096774193548387 [2024-06-28 00:05:48,230 INFO L175 Difference]: Start difference. First operand has 473 places, 422 transitions, 5861 flow. Second operand 10 states and 127 transitions. [2024-06-28 00:05:48,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 482 places, 435 transitions, 6837 flow [2024-06-28 00:05:49,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 475 places, 435 transitions, 6731 flow, removed 41 selfloop flow, removed 7 redundant places. [2024-06-28 00:05:49,110 INFO L231 Difference]: Finished difference. Result has 476 places, 424 transitions, 6054 flow [2024-06-28 00:05:49,111 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5755, PETRI_DIFFERENCE_MINUEND_PLACES=466, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6054, PETRI_PLACES=476, PETRI_TRANSITIONS=424} [2024-06-28 00:05:49,111 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 446 predicate places. [2024-06-28 00:05:49,111 INFO L495 AbstractCegarLoop]: Abstraction has has 476 places, 424 transitions, 6054 flow [2024-06-28 00:05:49,111 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) [2024-06-28 00:05:49,112 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:49,112 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:49,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-28 00:05:49,112 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)] === [2024-06-28 00:05:49,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:49,112 INFO L85 PathProgramCache]: Analyzing trace with hash -2046345593, now seen corresponding path program 28 times [2024-06-28 00:05:49,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:49,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528469587] [2024-06-28 00:05:49,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:49,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:49,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:50,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:50,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:50,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528469587] [2024-06-28 00:05:50,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528469587] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:50,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:50,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:05:50,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365056813] [2024-06-28 00:05:50,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:50,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:05:50,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:50,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:05:50,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:05:50,819 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:05:50,819 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 476 places, 424 transitions, 6054 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:50,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:50,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:05:50,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:51,397 INFO L124 PetriNetUnfolderBase]: 934/1710 cut-off events. [2024-06-28 00:05:51,397 INFO L125 PetriNetUnfolderBase]: For 167830/167830 co-relation queries the response was YES. [2024-06-28 00:05:51,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13170 conditions, 1710 events. 934/1710 cut-off events. For 167830/167830 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 10155 event pairs, 127 based on Foata normal form. 2/1712 useless extension candidates. Maximal degree in co-relation 12983. Up to 1317 conditions per place. [2024-06-28 00:05:51,421 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 298 selfloop transitions, 137 changer transitions 0/437 dead transitions. [2024-06-28 00:05:51,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 486 places, 437 transitions, 7227 flow [2024-06-28 00:05:51,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:05:51,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:05:51,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-28 00:05:51,423 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3489736070381232 [2024-06-28 00:05:51,423 INFO L175 Difference]: Start difference. First operand has 476 places, 424 transitions, 6054 flow. Second operand 11 states and 119 transitions. [2024-06-28 00:05:51,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 486 places, 437 transitions, 7227 flow [2024-06-28 00:05:52,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 476 places, 437 transitions, 6891 flow, removed 28 selfloop flow, removed 10 redundant places. [2024-06-28 00:05:52,120 INFO L231 Difference]: Finished difference. Result has 477 places, 425 transitions, 6037 flow [2024-06-28 00:05:52,121 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5718, PETRI_DIFFERENCE_MINUEND_PLACES=466, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=424, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6037, PETRI_PLACES=477, PETRI_TRANSITIONS=425} [2024-06-28 00:05:52,121 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 447 predicate places. [2024-06-28 00:05:52,121 INFO L495 AbstractCegarLoop]: Abstraction has has 477 places, 425 transitions, 6037 flow [2024-06-28 00:05:52,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:52,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:52,121 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:52,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-28 00:05:52,121 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)] === [2024-06-28 00:05:52,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:52,122 INFO L85 PathProgramCache]: Analyzing trace with hash 1993501181, now seen corresponding path program 6 times [2024-06-28 00:05:52,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:52,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157131167] [2024-06-28 00:05:52,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:52,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:52,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:53,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:53,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:53,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157131167] [2024-06-28 00:05:53,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157131167] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:53,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:53,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:05:53,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158316772] [2024-06-28 00:05:53,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:53,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:05:53,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:53,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:05:53,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:05:54,018 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:05:54,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 477 places, 425 transitions, 6037 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:54,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:54,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:05:54,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:54,621 INFO L124 PetriNetUnfolderBase]: 938/1718 cut-off events. [2024-06-28 00:05:54,621 INFO L125 PetriNetUnfolderBase]: For 170179/170179 co-relation queries the response was YES. [2024-06-28 00:05:54,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13127 conditions, 1718 events. 938/1718 cut-off events. For 170179/170179 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 10201 event pairs, 274 based on Foata normal form. 2/1720 useless extension candidates. Maximal degree in co-relation 12940. Up to 1669 conditions per place. [2024-06-28 00:05:54,647 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 411 selfloop transitions, 25 changer transitions 0/438 dead transitions. [2024-06-28 00:05:54,647 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 488 places, 438 transitions, 6973 flow [2024-06-28 00:05:54,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:05:54,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:05:54,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 115 transitions. [2024-06-28 00:05:54,648 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30913978494623656 [2024-06-28 00:05:54,648 INFO L175 Difference]: Start difference. First operand has 477 places, 425 transitions, 6037 flow. Second operand 12 states and 115 transitions. [2024-06-28 00:05:54,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 488 places, 438 transitions, 6973 flow [2024-06-28 00:05:55,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 475 places, 438 transitions, 6462 flow, removed 24 selfloop flow, removed 13 redundant places. [2024-06-28 00:05:55,474 INFO L231 Difference]: Finished difference. Result has 476 places, 426 transitions, 5620 flow [2024-06-28 00:05:55,475 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5526, PETRI_DIFFERENCE_MINUEND_PLACES=464, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=425, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=400, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5620, PETRI_PLACES=476, PETRI_TRANSITIONS=426} [2024-06-28 00:05:55,475 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 446 predicate places. [2024-06-28 00:05:55,475 INFO L495 AbstractCegarLoop]: Abstraction has has 476 places, 426 transitions, 5620 flow [2024-06-28 00:05:55,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:55,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:55,476 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:55,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-28 00:05:55,476 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)] === [2024-06-28 00:05:55,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:55,476 INFO L85 PathProgramCache]: Analyzing trace with hash -2046340943, now seen corresponding path program 29 times [2024-06-28 00:05:55,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:55,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537824842] [2024-06-28 00:05:55,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:55,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:55,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:57,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:57,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:57,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537824842] [2024-06-28 00:05:57,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537824842] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:57,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:57,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:05:57,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625632766] [2024-06-28 00:05:57,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:57,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:05:57,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:57,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:05:57,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:05:57,338 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:05:57,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 476 places, 426 transitions, 5620 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:57,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:57,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:05:57,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:57,933 INFO L124 PetriNetUnfolderBase]: 942/1726 cut-off events. [2024-06-28 00:05:57,933 INFO L125 PetriNetUnfolderBase]: For 172909/172909 co-relation queries the response was YES. [2024-06-28 00:05:57,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12510 conditions, 1726 events. 942/1726 cut-off events. For 172909/172909 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 10253 event pairs, 129 based on Foata normal form. 2/1728 useless extension candidates. Maximal degree in co-relation 12327. Up to 1358 conditions per place. [2024-06-28 00:05:57,956 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 299 selfloop transitions, 136 changer transitions 0/437 dead transitions. [2024-06-28 00:05:57,956 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 486 places, 437 transitions, 6550 flow [2024-06-28 00:05:57,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:05:57,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:05:57,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-28 00:05:57,957 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3460410557184751 [2024-06-28 00:05:57,957 INFO L175 Difference]: Start difference. First operand has 476 places, 426 transitions, 5620 flow. Second operand 11 states and 118 transitions. [2024-06-28 00:05:57,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 486 places, 437 transitions, 6550 flow [2024-06-28 00:05:58,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 476 places, 437 transitions, 6467 flow, removed 17 selfloop flow, removed 10 redundant places. [2024-06-28 00:05:58,737 INFO L231 Difference]: Finished difference. Result has 477 places, 427 transitions, 5853 flow [2024-06-28 00:05:58,738 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5537, PETRI_DIFFERENCE_MINUEND_PLACES=466, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5853, PETRI_PLACES=477, PETRI_TRANSITIONS=427} [2024-06-28 00:05:58,738 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 447 predicate places. [2024-06-28 00:05:58,738 INFO L495 AbstractCegarLoop]: Abstraction has has 477 places, 427 transitions, 5853 flow [2024-06-28 00:05:58,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:58,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:58,738 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:58,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-28 00:05:58,738 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)] === [2024-06-28 00:05:58,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:58,739 INFO L85 PathProgramCache]: Analyzing trace with hash 323682281, now seen corresponding path program 30 times [2024-06-28 00:05:58,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:58,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140554766] [2024-06-28 00:05:58,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:58,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:58,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:00,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:06:00,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:00,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140554766] [2024-06-28 00:06:00,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140554766] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:00,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:00,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:06:00,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521115699] [2024-06-28 00:06:00,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:00,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:06:00,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:00,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:06:00,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:06:00,416 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:06:00,416 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 477 places, 427 transitions, 5853 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:00,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:00,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:06:00,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:01,010 INFO L124 PetriNetUnfolderBase]: 939/1721 cut-off events. [2024-06-28 00:06:01,010 INFO L125 PetriNetUnfolderBase]: For 161366/161366 co-relation queries the response was YES. [2024-06-28 00:06:01,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12408 conditions, 1721 events. 939/1721 cut-off events. For 161366/161366 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 10238 event pairs, 128 based on Foata normal form. 2/1723 useless extension candidates. Maximal degree in co-relation 12224. Up to 1353 conditions per place. [2024-06-28 00:06:01,040 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 300 selfloop transitions, 135 changer transitions 0/437 dead transitions. [2024-06-28 00:06:01,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 487 places, 437 transitions, 6745 flow [2024-06-28 00:06:01,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:06:01,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:06:01,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-28 00:06:01,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3519061583577713 [2024-06-28 00:06:01,041 INFO L175 Difference]: Start difference. First operand has 477 places, 427 transitions, 5853 flow. Second operand 11 states and 120 transitions. [2024-06-28 00:06:01,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 487 places, 437 transitions, 6745 flow [2024-06-28 00:06:01,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 478 places, 437 transitions, 6409 flow, removed 33 selfloop flow, removed 9 redundant places. [2024-06-28 00:06:01,857 INFO L231 Difference]: Finished difference. Result has 479 places, 427 transitions, 5791 flow [2024-06-28 00:06:01,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5517, PETRI_DIFFERENCE_MINUEND_PLACES=468, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5791, PETRI_PLACES=479, PETRI_TRANSITIONS=427} [2024-06-28 00:06:01,857 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 449 predicate places. [2024-06-28 00:06:01,858 INFO L495 AbstractCegarLoop]: Abstraction has has 479 places, 427 transitions, 5791 flow [2024-06-28 00:06:01,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:01,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:01,858 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:06:01,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-28 00:06:01,858 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)] === [2024-06-28 00:06:01,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:01,859 INFO L85 PathProgramCache]: Analyzing trace with hash 1993500871, now seen corresponding path program 7 times [2024-06-28 00:06:01,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:01,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359659038] [2024-06-28 00:06:01,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:01,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:01,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:03,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:06:03,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:03,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359659038] [2024-06-28 00:06:03,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359659038] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:03,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:03,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:06:03,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028960318] [2024-06-28 00:06:03,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:03,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:06:03,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:03,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:06:03,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:06:03,941 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:06:03,941 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 479 places, 427 transitions, 5791 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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) [2024-06-28 00:06:03,941 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:03,942 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:06:03,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:04,503 INFO L124 PetriNetUnfolderBase]: 950/1739 cut-off events. [2024-06-28 00:06:04,504 INFO L125 PetriNetUnfolderBase]: For 168045/168045 co-relation queries the response was YES. [2024-06-28 00:06:04,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12654 conditions, 1739 events. 950/1739 cut-off events. For 168045/168045 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 10329 event pairs, 274 based on Foata normal form. 2/1741 useless extension candidates. Maximal degree in co-relation 12469. Up to 1678 conditions per place. [2024-06-28 00:06:04,528 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 415 selfloop transitions, 28 changer transitions 0/445 dead transitions. [2024-06-28 00:06:04,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 491 places, 445 transitions, 7131 flow [2024-06-28 00:06:04,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 00:06:04,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 00:06:04,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 123 transitions. [2024-06-28 00:06:04,529 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3052109181141439 [2024-06-28 00:06:04,529 INFO L175 Difference]: Start difference. First operand has 479 places, 427 transitions, 5791 flow. Second operand 13 states and 123 transitions. [2024-06-28 00:06:04,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 491 places, 445 transitions, 7131 flow [2024-06-28 00:06:05,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 481 places, 445 transitions, 6724 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-28 00:06:05,338 INFO L231 Difference]: Finished difference. Result has 482 places, 431 transitions, 5571 flow [2024-06-28 00:06:05,338 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5386, PETRI_DIFFERENCE_MINUEND_PLACES=469, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=401, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5571, PETRI_PLACES=482, PETRI_TRANSITIONS=431} [2024-06-28 00:06:05,338 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 452 predicate places. [2024-06-28 00:06:05,338 INFO L495 AbstractCegarLoop]: Abstraction has has 482 places, 431 transitions, 5571 flow [2024-06-28 00:06:05,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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) [2024-06-28 00:06:05,338 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:05,338 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:06:05,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-28 00:06:05,339 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)] === [2024-06-28 00:06:05,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:05,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1901982795, now seen corresponding path program 7 times [2024-06-28 00:06:05,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:05,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544341753] [2024-06-28 00:06:05,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:05,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:05,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:06,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:06:06,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:06,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544341753] [2024-06-28 00:06:06,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544341753] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:06,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:06,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:06:06,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076858345] [2024-06-28 00:06:06,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:06,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:06:06,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:06,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:06:06,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:06:07,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:06:07,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 482 places, 431 transitions, 5571 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:07,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:07,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:06:07,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:07,549 INFO L124 PetriNetUnfolderBase]: 944/1729 cut-off events. [2024-06-28 00:06:07,549 INFO L125 PetriNetUnfolderBase]: For 153210/153210 co-relation queries the response was YES. [2024-06-28 00:06:07,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11756 conditions, 1729 events. 944/1729 cut-off events. For 153210/153210 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 10301 event pairs, 272 based on Foata normal form. 4/1733 useless extension candidates. Maximal degree in co-relation 11570. Up to 1680 conditions per place. [2024-06-28 00:06:07,573 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 418 selfloop transitions, 22 changer transitions 0/442 dead transitions. [2024-06-28 00:06:07,573 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 492 places, 442 transitions, 6475 flow [2024-06-28 00:06:07,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:06:07,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:06:07,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 107 transitions. [2024-06-28 00:06:07,574 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31378299120234604 [2024-06-28 00:06:07,574 INFO L175 Difference]: Start difference. First operand has 482 places, 431 transitions, 5571 flow. Second operand 11 states and 107 transitions. [2024-06-28 00:06:07,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 492 places, 442 transitions, 6475 flow [2024-06-28 00:06:08,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 483 places, 442 transitions, 6338 flow, removed 55 selfloop flow, removed 9 redundant places. [2024-06-28 00:06:08,322 INFO L231 Difference]: Finished difference. Result has 484 places, 431 transitions, 5483 flow [2024-06-28 00:06:08,322 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5434, PETRI_DIFFERENCE_MINUEND_PLACES=473, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=431, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=409, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5483, PETRI_PLACES=484, PETRI_TRANSITIONS=431} [2024-06-28 00:06:08,322 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 454 predicate places. [2024-06-28 00:06:08,322 INFO L495 AbstractCegarLoop]: Abstraction has has 484 places, 431 transitions, 5483 flow [2024-06-28 00:06:08,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:08,323 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:08,323 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:06:08,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-28 00:06:08,323 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)] === [2024-06-28 00:06:08,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:08,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1901982485, now seen corresponding path program 8 times [2024-06-28 00:06:08,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:08,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262544760] [2024-06-28 00:06:08,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:08,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:08,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:09,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:06:09,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:09,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262544760] [2024-06-28 00:06:09,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262544760] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:09,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:09,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:06:09,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023471434] [2024-06-28 00:06:09,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:09,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:06:09,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:09,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:06:09,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:06:09,973 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:06:09,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 484 places, 431 transitions, 5483 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:09,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:09,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:06:09,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:10,532 INFO L124 PetriNetUnfolderBase]: 940/1723 cut-off events. [2024-06-28 00:06:10,533 INFO L125 PetriNetUnfolderBase]: For 123821/123821 co-relation queries the response was YES. [2024-06-28 00:06:10,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11312 conditions, 1723 events. 940/1723 cut-off events. For 123821/123821 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 10258 event pairs, 271 based on Foata normal form. 2/1725 useless extension candidates. Maximal degree in co-relation 11124. Up to 1677 conditions per place. [2024-06-28 00:06:10,556 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 417 selfloop transitions, 23 changer transitions 0/442 dead transitions. [2024-06-28 00:06:10,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 494 places, 442 transitions, 6417 flow [2024-06-28 00:06:10,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:06:10,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:06:10,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 108 transitions. [2024-06-28 00:06:10,557 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31671554252199413 [2024-06-28 00:06:10,557 INFO L175 Difference]: Start difference. First operand has 484 places, 431 transitions, 5483 flow. Second operand 11 states and 108 transitions. [2024-06-28 00:06:10,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 494 places, 442 transitions, 6417 flow [2024-06-28 00:06:11,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 484 places, 442 transitions, 6310 flow, removed 28 selfloop flow, removed 10 redundant places. [2024-06-28 00:06:11,156 INFO L231 Difference]: Finished difference. Result has 485 places, 431 transitions, 5427 flow [2024-06-28 00:06:11,156 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5376, PETRI_DIFFERENCE_MINUEND_PLACES=474, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=431, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=408, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5427, PETRI_PLACES=485, PETRI_TRANSITIONS=431} [2024-06-28 00:06:11,156 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 455 predicate places. [2024-06-28 00:06:11,156 INFO L495 AbstractCegarLoop]: Abstraction has has 485 places, 431 transitions, 5427 flow [2024-06-28 00:06:11,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:11,157 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:11,157 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:06:11,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-28 00:06:11,157 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)] === [2024-06-28 00:06:11,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:11,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1901973867, now seen corresponding path program 5 times [2024-06-28 00:06:11,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:11,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72785699] [2024-06-28 00:06:11,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:11,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:11,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:12,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:06:12,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:12,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72785699] [2024-06-28 00:06:12,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72785699] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:12,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:12,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:06:12,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110530503] [2024-06-28 00:06:12,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:12,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:06:12,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:12,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:06:12,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:06:12,856 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:06:12,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 485 places, 431 transitions, 5427 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:12,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:12,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:06:12,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:13,440 INFO L124 PetriNetUnfolderBase]: 938/1720 cut-off events. [2024-06-28 00:06:13,440 INFO L125 PetriNetUnfolderBase]: For 106128/106128 co-relation queries the response was YES. [2024-06-28 00:06:13,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11067 conditions, 1720 events. 938/1720 cut-off events. For 106128/106128 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 10268 event pairs, 271 based on Foata normal form. 1/1721 useless extension candidates. Maximal degree in co-relation 10878. Up to 1686 conditions per place. [2024-06-28 00:06:13,462 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 419 selfloop transitions, 19 changer transitions 0/440 dead transitions. [2024-06-28 00:06:13,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 495 places, 440 transitions, 6323 flow [2024-06-28 00:06:13,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:06:13,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:06:13,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 102 transitions. [2024-06-28 00:06:13,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2991202346041056 [2024-06-28 00:06:13,463 INFO L175 Difference]: Start difference. First operand has 485 places, 431 transitions, 5427 flow. Second operand 11 states and 102 transitions. [2024-06-28 00:06:13,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 495 places, 440 transitions, 6323 flow [2024-06-28 00:06:14,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 483 places, 440 transitions, 6239 flow, removed 12 selfloop flow, removed 12 redundant places. [2024-06-28 00:06:14,127 INFO L231 Difference]: Finished difference. Result has 484 places, 431 transitions, 5387 flow [2024-06-28 00:06:14,128 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5343, PETRI_DIFFERENCE_MINUEND_PLACES=473, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=431, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=412, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5387, PETRI_PLACES=484, PETRI_TRANSITIONS=431} [2024-06-28 00:06:14,128 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 454 predicate places. [2024-06-28 00:06:14,128 INFO L495 AbstractCegarLoop]: Abstraction has has 484 places, 431 transitions, 5387 flow [2024-06-28 00:06:14,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:14,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:14,128 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:06:14,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-28 00:06:14,129 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)] === [2024-06-28 00:06:14,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:14,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1643369731, now seen corresponding path program 1 times [2024-06-28 00:06:14,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:14,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586657023] [2024-06-28 00:06:14,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:14,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:14,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:15,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:06:15,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:15,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586657023] [2024-06-28 00:06:15,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586657023] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:15,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:15,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:06:15,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883658130] [2024-06-28 00:06:15,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:15,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:06:15,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:15,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:06:15,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:06:15,774 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:06:15,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 484 places, 431 transitions, 5387 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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) [2024-06-28 00:06:15,774 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:15,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:06:15,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:16,371 INFO L124 PetriNetUnfolderBase]: 954/1752 cut-off events. [2024-06-28 00:06:16,372 INFO L125 PetriNetUnfolderBase]: For 115678/115678 co-relation queries the response was YES. [2024-06-28 00:06:16,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11219 conditions, 1752 events. 954/1752 cut-off events. For 115678/115678 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 10512 event pairs, 117 based on Foata normal form. 2/1754 useless extension candidates. Maximal degree in co-relation 11031. Up to 1492 conditions per place. [2024-06-28 00:06:16,398 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 410 selfloop transitions, 42 changer transitions 0/454 dead transitions. [2024-06-28 00:06:16,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 493 places, 454 transitions, 6406 flow [2024-06-28 00:06:16,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:06:16,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:06:16,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 104 transitions. [2024-06-28 00:06:16,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33548387096774196 [2024-06-28 00:06:16,399 INFO L175 Difference]: Start difference. First operand has 484 places, 431 transitions, 5387 flow. Second operand 10 states and 104 transitions. [2024-06-28 00:06:16,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 493 places, 454 transitions, 6406 flow [2024-06-28 00:06:17,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 481 places, 454 transitions, 6343 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-28 00:06:17,053 INFO L231 Difference]: Finished difference. Result has 485 places, 435 transitions, 5525 flow [2024-06-28 00:06:17,053 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5324, PETRI_DIFFERENCE_MINUEND_PLACES=472, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=431, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=389, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5525, PETRI_PLACES=485, PETRI_TRANSITIONS=435} [2024-06-28 00:06:17,053 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 455 predicate places. [2024-06-28 00:06:17,053 INFO L495 AbstractCegarLoop]: Abstraction has has 485 places, 435 transitions, 5525 flow [2024-06-28 00:06:17,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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) [2024-06-28 00:06:17,053 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:17,053 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:06:17,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-28 00:06:17,053 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)] === [2024-06-28 00:06:17,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:17,054 INFO L85 PathProgramCache]: Analyzing trace with hash -1147707195, now seen corresponding path program 2 times [2024-06-28 00:06:17,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:17,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900758557] [2024-06-28 00:06:17,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:17,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:17,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:18,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:06:18,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:18,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900758557] [2024-06-28 00:06:18,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900758557] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:18,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:18,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:06:18,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942973518] [2024-06-28 00:06:18,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:18,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:06:18,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:18,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:06:18,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:06:18,804 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:06:18,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 485 places, 435 transitions, 5525 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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) [2024-06-28 00:06:18,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:18,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:06:18,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:19,422 INFO L124 PetriNetUnfolderBase]: 965/1773 cut-off events. [2024-06-28 00:06:19,423 INFO L125 PetriNetUnfolderBase]: For 131557/131557 co-relation queries the response was YES. [2024-06-28 00:06:19,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11722 conditions, 1773 events. 965/1773 cut-off events. For 131557/131557 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 10693 event pairs, 121 based on Foata normal form. 2/1775 useless extension candidates. Maximal degree in co-relation 11532. Up to 1280 conditions per place. [2024-06-28 00:06:19,442 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 392 selfloop transitions, 63 changer transitions 0/457 dead transitions. [2024-06-28 00:06:19,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 494 places, 457 transitions, 6756 flow [2024-06-28 00:06:19,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:06:19,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:06:19,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-28 00:06:19,444 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36451612903225805 [2024-06-28 00:06:19,444 INFO L175 Difference]: Start difference. First operand has 485 places, 435 transitions, 5525 flow. Second operand 10 states and 113 transitions. [2024-06-28 00:06:19,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 494 places, 457 transitions, 6756 flow [2024-06-28 00:06:20,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 489 places, 457 transitions, 6656 flow, removed 26 selfloop flow, removed 5 redundant places. [2024-06-28 00:06:20,285 INFO L231 Difference]: Finished difference. Result has 490 places, 437 transitions, 5585 flow [2024-06-28 00:06:20,285 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5425, PETRI_DIFFERENCE_MINUEND_PLACES=480, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=435, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=373, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5585, PETRI_PLACES=490, PETRI_TRANSITIONS=437} [2024-06-28 00:06:20,285 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 460 predicate places. [2024-06-28 00:06:20,285 INFO L495 AbstractCegarLoop]: Abstraction has has 490 places, 437 transitions, 5585 flow [2024-06-28 00:06:20,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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) [2024-06-28 00:06:20,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:20,286 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:06:20,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-28 00:06:20,286 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)] === [2024-06-28 00:06:20,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:20,286 INFO L85 PathProgramCache]: Analyzing trace with hash -953302597, now seen corresponding path program 3 times [2024-06-28 00:06:20,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:20,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202201802] [2024-06-28 00:06:20,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:20,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:20,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:21,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:06:21,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:21,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202201802] [2024-06-28 00:06:21,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202201802] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:21,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:21,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:06:21,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066050020] [2024-06-28 00:06:21,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:21,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:06:21,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:21,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:06:21,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:06:21,983 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:06:21,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 490 places, 437 transitions, 5585 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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) [2024-06-28 00:06:21,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:21,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:06:21,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:22,574 INFO L124 PetriNetUnfolderBase]: 976/1794 cut-off events. [2024-06-28 00:06:22,574 INFO L125 PetriNetUnfolderBase]: For 149247/149247 co-relation queries the response was YES. [2024-06-28 00:06:22,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12108 conditions, 1794 events. 976/1794 cut-off events. For 149247/149247 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 10850 event pairs, 164 based on Foata normal form. 2/1796 useless extension candidates. Maximal degree in co-relation 11917. Up to 1529 conditions per place. [2024-06-28 00:06:22,601 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 381 selfloop transitions, 74 changer transitions 0/457 dead transitions. [2024-06-28 00:06:22,601 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 499 places, 457 transitions, 6818 flow [2024-06-28 00:06:22,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:06:22,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:06:22,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-28 00:06:22,602 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3580645161290323 [2024-06-28 00:06:22,602 INFO L175 Difference]: Start difference. First operand has 490 places, 437 transitions, 5585 flow. Second operand 10 states and 111 transitions. [2024-06-28 00:06:22,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 499 places, 457 transitions, 6818 flow [2024-06-28 00:06:23,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 493 places, 457 transitions, 6724 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-28 00:06:23,480 INFO L231 Difference]: Finished difference. Result has 494 places, 439 transitions, 5678 flow [2024-06-28 00:06:23,481 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5495, PETRI_DIFFERENCE_MINUEND_PLACES=484, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=437, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=364, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5678, PETRI_PLACES=494, PETRI_TRANSITIONS=439} [2024-06-28 00:06:23,481 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 464 predicate places. [2024-06-28 00:06:23,481 INFO L495 AbstractCegarLoop]: Abstraction has has 494 places, 439 transitions, 5678 flow [2024-06-28 00:06:23,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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) [2024-06-28 00:06:23,481 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:23,481 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:06:23,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-28 00:06:23,481 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)] === [2024-06-28 00:06:23,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:23,482 INFO L85 PathProgramCache]: Analyzing trace with hash -1531091889, now seen corresponding path program 4 times [2024-06-28 00:06:23,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:23,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790858323] [2024-06-28 00:06:23,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:23,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:23,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:25,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:06:25,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:25,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790858323] [2024-06-28 00:06:25,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790858323] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:25,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:25,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:06:25,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563937261] [2024-06-28 00:06:25,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:25,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:06:25,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:25,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:06:25,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:06:25,164 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:06:25,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 494 places, 439 transitions, 5678 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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) [2024-06-28 00:06:25,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:25,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:06:25,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:25,748 INFO L124 PetriNetUnfolderBase]: 973/1789 cut-off events. [2024-06-28 00:06:25,748 INFO L125 PetriNetUnfolderBase]: For 136274/136274 co-relation queries the response was YES. [2024-06-28 00:06:25,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11935 conditions, 1789 events. 973/1789 cut-off events. For 136274/136274 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 10819 event pairs, 145 based on Foata normal form. 2/1791 useless extension candidates. Maximal degree in co-relation 11742. Up to 1426 conditions per place. [2024-06-28 00:06:25,774 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 387 selfloop transitions, 69 changer transitions 0/458 dead transitions. [2024-06-28 00:06:25,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 503 places, 458 transitions, 6889 flow [2024-06-28 00:06:25,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:06:25,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:06:25,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-28 00:06:25,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36129032258064514 [2024-06-28 00:06:25,775 INFO L175 Difference]: Start difference. First operand has 494 places, 439 transitions, 5678 flow. Second operand 10 states and 112 transitions. [2024-06-28 00:06:25,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 503 places, 458 transitions, 6889 flow [2024-06-28 00:06:26,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 497 places, 458 transitions, 6783 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-28 00:06:26,476 INFO L231 Difference]: Finished difference. Result has 498 places, 439 transitions, 5718 flow [2024-06-28 00:06:26,476 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5572, PETRI_DIFFERENCE_MINUEND_PLACES=488, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=439, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=370, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5718, PETRI_PLACES=498, PETRI_TRANSITIONS=439} [2024-06-28 00:06:26,476 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 468 predicate places. [2024-06-28 00:06:26,477 INFO L495 AbstractCegarLoop]: Abstraction has has 498 places, 439 transitions, 5718 flow [2024-06-28 00:06:26,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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) [2024-06-28 00:06:26,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:26,477 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:06:26,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-28 00:06:26,477 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)] === [2024-06-28 00:06:26,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:26,478 INFO L85 PathProgramCache]: Analyzing trace with hash -283918723, now seen corresponding path program 5 times [2024-06-28 00:06:26,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:26,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052432066] [2024-06-28 00:06:26,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:26,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:26,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:28,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:06:28,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:28,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052432066] [2024-06-28 00:06:28,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052432066] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:28,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:28,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:06:28,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903109914] [2024-06-28 00:06:28,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:28,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:06:28,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:28,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:06:28,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:06:28,337 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:06:28,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 498 places, 439 transitions, 5718 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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) [2024-06-28 00:06:28,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:28,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:06:28,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:28,930 INFO L124 PetriNetUnfolderBase]: 970/1784 cut-off events. [2024-06-28 00:06:28,930 INFO L125 PetriNetUnfolderBase]: For 123289/123289 co-relation queries the response was YES. [2024-06-28 00:06:28,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11770 conditions, 1784 events. 970/1784 cut-off events. For 123289/123289 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 10796 event pairs, 169 based on Foata normal form. 2/1786 useless extension candidates. Maximal degree in co-relation 11575. Up to 1588 conditions per place. [2024-06-28 00:06:28,955 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 376 selfloop transitions, 77 changer transitions 0/455 dead transitions. [2024-06-28 00:06:28,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 507 places, 455 transitions, 6669 flow [2024-06-28 00:06:28,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:06:28,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:06:28,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-28 00:06:28,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-06-28 00:06:28,956 INFO L175 Difference]: Start difference. First operand has 498 places, 439 transitions, 5718 flow. Second operand 10 states and 109 transitions. [2024-06-28 00:06:28,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 507 places, 455 transitions, 6669 flow [2024-06-28 00:06:29,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 497 places, 455 transitions, 6461 flow, removed 9 selfloop flow, removed 10 redundant places. [2024-06-28 00:06:29,619 INFO L231 Difference]: Finished difference. Result has 498 places, 439 transitions, 5669 flow [2024-06-28 00:06:29,619 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5510, PETRI_DIFFERENCE_MINUEND_PLACES=488, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=439, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5669, PETRI_PLACES=498, PETRI_TRANSITIONS=439} [2024-06-28 00:06:29,620 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 468 predicate places. [2024-06-28 00:06:29,620 INFO L495 AbstractCegarLoop]: Abstraction has has 498 places, 439 transitions, 5669 flow [2024-06-28 00:06:29,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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) [2024-06-28 00:06:29,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:29,620 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:06:29,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-28 00:06:29,620 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)] === [2024-06-28 00:06:29,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:29,621 INFO L85 PathProgramCache]: Analyzing trace with hash 6530985, now seen corresponding path program 1 times [2024-06-28 00:06:29,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:29,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207406512] [2024-06-28 00:06:29,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:29,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:29,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:31,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:06:31,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:31,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207406512] [2024-06-28 00:06:31,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207406512] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:31,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:31,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:06:31,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356908995] [2024-06-28 00:06:31,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:31,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:06:31,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:31,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:06:31,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:06:31,666 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:06:31,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 498 places, 439 transitions, 5669 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:31,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:31,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:06:31,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:32,281 INFO L124 PetriNetUnfolderBase]: 1016/1879 cut-off events. [2024-06-28 00:06:32,281 INFO L125 PetriNetUnfolderBase]: For 253730/253730 co-relation queries the response was YES. [2024-06-28 00:06:32,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13708 conditions, 1879 events. 1016/1879 cut-off events. For 253730/253730 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 11420 event pairs, 133 based on Foata normal form. 8/1887 useless extension candidates. Maximal degree in co-relation 13513. Up to 1363 conditions per place. [2024-06-28 00:06:32,306 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 313 selfloop transitions, 144 changer transitions 7/466 dead transitions. [2024-06-28 00:06:32,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 508 places, 466 transitions, 7397 flow [2024-06-28 00:06:32,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:06:32,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:06:32,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-28 00:06:32,307 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41055718475073316 [2024-06-28 00:06:32,307 INFO L175 Difference]: Start difference. First operand has 498 places, 439 transitions, 5669 flow. Second operand 11 states and 140 transitions. [2024-06-28 00:06:32,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 508 places, 466 transitions, 7397 flow [2024-06-28 00:06:33,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 500 places, 466 transitions, 7246 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-28 00:06:33,359 INFO L231 Difference]: Finished difference. Result has 502 places, 439 transitions, 5882 flow [2024-06-28 00:06:33,360 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5518, PETRI_DIFFERENCE_MINUEND_PLACES=490, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=439, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5882, PETRI_PLACES=502, PETRI_TRANSITIONS=439} [2024-06-28 00:06:33,360 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 472 predicate places. [2024-06-28 00:06:33,360 INFO L495 AbstractCegarLoop]: Abstraction has has 502 places, 439 transitions, 5882 flow [2024-06-28 00:06:33,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:33,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:33,360 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:06:33,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-28 00:06:33,360 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)] === [2024-06-28 00:06:33,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:33,361 INFO L85 PathProgramCache]: Analyzing trace with hash 6521685, now seen corresponding path program 2 times [2024-06-28 00:06:33,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:33,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398826674] [2024-06-28 00:06:33,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:33,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:33,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:35,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:06:35,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:35,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398826674] [2024-06-28 00:06:35,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398826674] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:35,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:35,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 00:06:35,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928727473] [2024-06-28 00:06:35,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:35,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 00:06:35,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:35,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 00:06:35,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-28 00:06:35,615 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:06:35,616 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 502 places, 439 transitions, 5882 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:35,616 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:35,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:06:35,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:36,198 INFO L124 PetriNetUnfolderBase]: 995/1836 cut-off events. [2024-06-28 00:06:36,198 INFO L125 PetriNetUnfolderBase]: For 197699/197699 co-relation queries the response was YES. [2024-06-28 00:06:36,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13420 conditions, 1836 events. 995/1836 cut-off events. For 197699/197699 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 11083 event pairs, 132 based on Foata normal form. 2/1838 useless extension candidates. Maximal degree in co-relation 13223. Up to 1586 conditions per place. [2024-06-28 00:06:36,224 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 343 selfloop transitions, 111 changer transitions 0/456 dead transitions. [2024-06-28 00:06:36,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 512 places, 456 transitions, 6893 flow [2024-06-28 00:06:36,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:06:36,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:06:36,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 138 transitions. [2024-06-28 00:06:36,225 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-28 00:06:36,225 INFO L175 Difference]: Start difference. First operand has 502 places, 439 transitions, 5882 flow. Second operand 12 states and 138 transitions. [2024-06-28 00:06:36,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 512 places, 456 transitions, 6893 flow [2024-06-28 00:06:37,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 504 places, 456 transitions, 6630 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-28 00:06:37,167 INFO L231 Difference]: Finished difference. Result has 505 places, 442 transitions, 5918 flow [2024-06-28 00:06:37,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5619, PETRI_DIFFERENCE_MINUEND_PLACES=493, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=439, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5918, PETRI_PLACES=505, PETRI_TRANSITIONS=442} [2024-06-28 00:06:37,168 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 475 predicate places. [2024-06-28 00:06:37,168 INFO L495 AbstractCegarLoop]: Abstraction has has 505 places, 442 transitions, 5918 flow [2024-06-28 00:06:37,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:37,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:37,169 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:06:37,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-28 00:06:37,169 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)] === [2024-06-28 00:06:37,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:37,170 INFO L85 PathProgramCache]: Analyzing trace with hash 675632573, now seen corresponding path program 6 times [2024-06-28 00:06:37,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:37,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768292350] [2024-06-28 00:06:37,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:37,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:37,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:39,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:06:39,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:39,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768292350] [2024-06-28 00:06:39,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768292350] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:39,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:39,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:06:39,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810590764] [2024-06-28 00:06:39,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:39,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:06:39,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:39,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:06:39,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:06:39,373 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:06:39,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 505 places, 442 transitions, 5918 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:39,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:39,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:06:39,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:39,945 INFO L124 PetriNetUnfolderBase]: 999/1844 cut-off events. [2024-06-28 00:06:39,945 INFO L125 PetriNetUnfolderBase]: For 197612/197612 co-relation queries the response was YES. [2024-06-28 00:06:39,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13457 conditions, 1844 events. 999/1844 cut-off events. For 197612/197612 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 11126 event pairs, 132 based on Foata normal form. 2/1846 useless extension candidates. Maximal degree in co-relation 13259. Up to 1495 conditions per place. [2024-06-28 00:06:39,971 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 320 selfloop transitions, 135 changer transitions 0/457 dead transitions. [2024-06-28 00:06:39,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 515 places, 457 transitions, 6883 flow [2024-06-28 00:06:39,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:06:39,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:06:39,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-28 00:06:39,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375366568914956 [2024-06-28 00:06:39,972 INFO L175 Difference]: Start difference. First operand has 505 places, 442 transitions, 5918 flow. Second operand 11 states and 128 transitions. [2024-06-28 00:06:39,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 515 places, 457 transitions, 6883 flow [2024-06-28 00:06:40,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 508 places, 457 transitions, 6672 flow, removed 30 selfloop flow, removed 7 redundant places. [2024-06-28 00:06:40,938 INFO L231 Difference]: Finished difference. Result has 509 places, 443 transitions, 5998 flow [2024-06-28 00:06:40,939 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5708, PETRI_DIFFERENCE_MINUEND_PLACES=498, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=442, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5998, PETRI_PLACES=509, PETRI_TRANSITIONS=443} [2024-06-28 00:06:40,939 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 479 predicate places. [2024-06-28 00:06:40,939 INFO L495 AbstractCegarLoop]: Abstraction has has 509 places, 443 transitions, 5998 flow [2024-06-28 00:06:40,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:40,939 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:40,939 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:06:40,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-28 00:06:40,939 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)] === [2024-06-28 00:06:40,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:40,940 INFO L85 PathProgramCache]: Analyzing trace with hash 675632790, now seen corresponding path program 1 times [2024-06-28 00:06:40,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:40,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658929078] [2024-06-28 00:06:40,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:40,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:40,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:42,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:06:42,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:42,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658929078] [2024-06-28 00:06:42,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658929078] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:42,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:42,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:06:42,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202462438] [2024-06-28 00:06:42,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:42,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:06:42,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:42,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:06:42,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:06:42,848 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:06:42,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 509 places, 443 transitions, 5998 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:42,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:42,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:06:42,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:43,371 INFO L124 PetriNetUnfolderBase]: 997/1841 cut-off events. [2024-06-28 00:06:43,371 INFO L125 PetriNetUnfolderBase]: For 183979/183979 co-relation queries the response was YES. [2024-06-28 00:06:43,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13410 conditions, 1841 events. 997/1841 cut-off events. For 183979/183979 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 11143 event pairs, 132 based on Foata normal form. 1/1842 useless extension candidates. Maximal degree in co-relation 13210. Up to 1465 conditions per place. [2024-06-28 00:06:43,398 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 308 selfloop transitions, 144 changer transitions 0/454 dead transitions. [2024-06-28 00:06:43,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 518 places, 454 transitions, 6928 flow [2024-06-28 00:06:43,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:06:43,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:06:43,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-28 00:06:43,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-28 00:06:43,399 INFO L175 Difference]: Start difference. First operand has 509 places, 443 transitions, 5998 flow. Second operand 10 states and 120 transitions. [2024-06-28 00:06:43,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 518 places, 454 transitions, 6928 flow [2024-06-28 00:06:44,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 509 places, 454 transitions, 6610 flow, removed 25 selfloop flow, removed 9 redundant places. [2024-06-28 00:06:44,364 INFO L231 Difference]: Finished difference. Result has 510 places, 443 transitions, 5992 flow [2024-06-28 00:06:44,364 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5680, PETRI_DIFFERENCE_MINUEND_PLACES=500, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=443, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=144, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5992, PETRI_PLACES=510, PETRI_TRANSITIONS=443} [2024-06-28 00:06:44,364 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 480 predicate places. [2024-06-28 00:06:44,364 INFO L495 AbstractCegarLoop]: Abstraction has has 510 places, 443 transitions, 5992 flow [2024-06-28 00:06:44,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:44,365 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:44,365 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:06:44,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-28 00:06:44,365 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)] === [2024-06-28 00:06:44,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:44,365 INFO L85 PathProgramCache]: Analyzing trace with hash 474543323, now seen corresponding path program 7 times [2024-06-28 00:06:44,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:44,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357130217] [2024-06-28 00:06:44,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:44,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:44,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:46,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:06:46,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:46,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357130217] [2024-06-28 00:06:46,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357130217] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:46,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:46,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:06:46,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897818296] [2024-06-28 00:06:46,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:46,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:06:46,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:46,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:06:46,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:06:46,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:06:46,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 510 places, 443 transitions, 5992 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:46,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:46,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:06:46,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:47,158 INFO L124 PetriNetUnfolderBase]: 1026/1900 cut-off events. [2024-06-28 00:06:47,158 INFO L125 PetriNetUnfolderBase]: For 258831/258831 co-relation queries the response was YES. [2024-06-28 00:06:47,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13764 conditions, 1900 events. 1026/1900 cut-off events. For 258831/258831 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 11558 event pairs, 138 based on Foata normal form. 10/1910 useless extension candidates. Maximal degree in co-relation 13563. Up to 1626 conditions per place. [2024-06-28 00:06:47,185 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 376 selfloop transitions, 83 changer transitions 9/470 dead transitions. [2024-06-28 00:06:47,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 520 places, 470 transitions, 7147 flow [2024-06-28 00:06:47,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:06:47,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:06:47,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-28 00:06:47,186 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39882697947214074 [2024-06-28 00:06:47,186 INFO L175 Difference]: Start difference. First operand has 510 places, 443 transitions, 5992 flow. Second operand 11 states and 136 transitions. [2024-06-28 00:06:47,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 520 places, 470 transitions, 7147 flow [2024-06-28 00:06:48,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 511 places, 470 transitions, 6843 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-28 00:06:48,202 INFO L231 Difference]: Finished difference. Result has 513 places, 447 transitions, 5916 flow [2024-06-28 00:06:48,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5698, PETRI_DIFFERENCE_MINUEND_PLACES=501, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=443, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5916, PETRI_PLACES=513, PETRI_TRANSITIONS=447} [2024-06-28 00:06:48,202 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 483 predicate places. [2024-06-28 00:06:48,203 INFO L495 AbstractCegarLoop]: Abstraction has has 513 places, 447 transitions, 5916 flow [2024-06-28 00:06:48,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:48,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:48,203 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:06:48,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-28 00:06:48,203 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)] === [2024-06-28 00:06:48,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:48,204 INFO L85 PathProgramCache]: Analyzing trace with hash -383736561, now seen corresponding path program 8 times [2024-06-28 00:06:48,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:48,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163608091] [2024-06-28 00:06:48,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:48,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:48,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:50,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:06:50,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:50,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163608091] [2024-06-28 00:06:50,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163608091] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:50,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:50,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:06:50,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074216727] [2024-06-28 00:06:50,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:50,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:06:50,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:50,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:06:50,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:06:50,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:06:50,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 513 places, 447 transitions, 5916 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:50,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:50,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:06:50,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:51,026 INFO L124 PetriNetUnfolderBase]: 1031/1911 cut-off events. [2024-06-28 00:06:51,026 INFO L125 PetriNetUnfolderBase]: For 260981/260981 co-relation queries the response was YES. [2024-06-28 00:06:51,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13730 conditions, 1911 events. 1031/1911 cut-off events. For 260981/260981 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 11670 event pairs, 140 based on Foata normal form. 10/1921 useless extension candidates. Maximal degree in co-relation 13528. Up to 1637 conditions per place. [2024-06-28 00:06:51,054 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 386 selfloop transitions, 76 changer transitions 9/473 dead transitions. [2024-06-28 00:06:51,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 523 places, 473 transitions, 7065 flow [2024-06-28 00:06:51,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:06:51,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:06:51,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-28 00:06:51,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39882697947214074 [2024-06-28 00:06:51,055 INFO L175 Difference]: Start difference. First operand has 513 places, 447 transitions, 5916 flow. Second operand 11 states and 136 transitions. [2024-06-28 00:06:51,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 523 places, 473 transitions, 7065 flow [2024-06-28 00:06:52,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 518 places, 473 transitions, 6931 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-28 00:06:52,197 INFO L231 Difference]: Finished difference. Result has 520 places, 450 transitions, 5984 flow [2024-06-28 00:06:52,197 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5789, PETRI_DIFFERENCE_MINUEND_PLACES=508, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=447, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5984, PETRI_PLACES=520, PETRI_TRANSITIONS=450} [2024-06-28 00:06:52,198 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 490 predicate places. [2024-06-28 00:06:52,198 INFO L495 AbstractCegarLoop]: Abstraction has has 520 places, 450 transitions, 5984 flow [2024-06-28 00:06:52,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:52,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:52,198 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:06:52,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-28 00:06:52,198 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)] === [2024-06-28 00:06:52,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:52,199 INFO L85 PathProgramCache]: Analyzing trace with hash 668275343, now seen corresponding path program 9 times [2024-06-28 00:06:52,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:52,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625025582] [2024-06-28 00:06:52,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:52,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:52,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:54,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:06:54,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:54,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625025582] [2024-06-28 00:06:54,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625025582] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:54,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:54,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:06:54,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857657950] [2024-06-28 00:06:54,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:54,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:06:54,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:54,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:06:54,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:06:54,400 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:06:54,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 520 places, 450 transitions, 5984 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:54,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:54,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:06:54,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:55,003 INFO L124 PetriNetUnfolderBase]: 1022/1892 cut-off events. [2024-06-28 00:06:55,003 INFO L125 PetriNetUnfolderBase]: For 214950/214950 co-relation queries the response was YES. [2024-06-28 00:06:55,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13921 conditions, 1892 events. 1022/1892 cut-off events. For 214950/214950 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 11569 event pairs, 135 based on Foata normal form. 2/1894 useless extension candidates. Maximal degree in co-relation 13717. Up to 1620 conditions per place. [2024-06-28 00:06:55,032 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 368 selfloop transitions, 99 changer transitions 0/469 dead transitions. [2024-06-28 00:06:55,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 531 places, 469 transitions, 7283 flow [2024-06-28 00:06:55,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:06:55,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:06:55,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2024-06-28 00:06:55,037 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3736559139784946 [2024-06-28 00:06:55,037 INFO L175 Difference]: Start difference. First operand has 520 places, 450 transitions, 5984 flow. Second operand 12 states and 139 transitions. [2024-06-28 00:06:55,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 531 places, 469 transitions, 7283 flow [2024-06-28 00:06:56,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 525 places, 469 transitions, 7156 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-28 00:06:56,177 INFO L231 Difference]: Finished difference. Result has 527 places, 453 transitions, 6139 flow [2024-06-28 00:06:56,177 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5857, PETRI_DIFFERENCE_MINUEND_PLACES=514, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=450, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=352, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6139, PETRI_PLACES=527, PETRI_TRANSITIONS=453} [2024-06-28 00:06:56,177 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 497 predicate places. [2024-06-28 00:06:56,178 INFO L495 AbstractCegarLoop]: Abstraction has has 527 places, 453 transitions, 6139 flow [2024-06-28 00:06:56,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:56,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:56,178 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:06:56,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-28 00:06:56,178 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)] === [2024-06-28 00:06:56,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:56,179 INFO L85 PathProgramCache]: Analyzing trace with hash -527834481, now seen corresponding path program 10 times [2024-06-28 00:06:56,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:56,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392893494] [2024-06-28 00:06:56,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:56,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:56,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:57,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:06:57,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:57,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392893494] [2024-06-28 00:06:57,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392893494] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:57,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:57,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:06:57,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731975007] [2024-06-28 00:06:57,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:57,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:06:57,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:57,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:06:57,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:06:58,091 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:06:58,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 527 places, 453 transitions, 6139 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:58,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:58,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:06:58,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:58,934 INFO L124 PetriNetUnfolderBase]: 1037/1921 cut-off events. [2024-06-28 00:06:58,934 INFO L125 PetriNetUnfolderBase]: For 236145/236145 co-relation queries the response was YES. [2024-06-28 00:06:58,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14497 conditions, 1921 events. 1037/1921 cut-off events. For 236145/236145 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 11780 event pairs, 140 based on Foata normal form. 2/1923 useless extension candidates. Maximal degree in co-relation 14290. Up to 1537 conditions per place. [2024-06-28 00:06:58,963 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 376 selfloop transitions, 93 changer transitions 0/471 dead transitions. [2024-06-28 00:06:58,963 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 537 places, 471 transitions, 7448 flow [2024-06-28 00:06:58,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:06:58,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:06:58,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-28 00:06:58,964 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39002932551319647 [2024-06-28 00:06:58,964 INFO L175 Difference]: Start difference. First operand has 527 places, 453 transitions, 6139 flow. Second operand 11 states and 133 transitions. [2024-06-28 00:06:58,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 537 places, 471 transitions, 7448 flow [2024-06-28 00:07:00,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 531 places, 471 transitions, 7310 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-28 00:07:00,262 INFO L231 Difference]: Finished difference. Result has 533 places, 456 transitions, 6277 flow [2024-06-28 00:07:00,262 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6001, PETRI_DIFFERENCE_MINUEND_PLACES=521, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=453, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6277, PETRI_PLACES=533, PETRI_TRANSITIONS=456} [2024-06-28 00:07:00,263 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 503 predicate places. [2024-06-28 00:07:00,263 INFO L495 AbstractCegarLoop]: Abstraction has has 533 places, 456 transitions, 6277 flow [2024-06-28 00:07:00,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:00,263 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:00,263 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:07:00,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-28 00:07:00,264 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)] === [2024-06-28 00:07:00,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:00,265 INFO L85 PathProgramCache]: Analyzing trace with hash -1053316665, now seen corresponding path program 11 times [2024-06-28 00:07:00,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:00,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499514747] [2024-06-28 00:07:00,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:00,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:00,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:02,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:07:02,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:02,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499514747] [2024-06-28 00:07:02,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499514747] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:02,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:02,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:07:02,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081613022] [2024-06-28 00:07:02,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:02,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:07:02,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:02,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:07:02,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:07:02,556 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:07:02,557 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 533 places, 456 transitions, 6277 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:02,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:02,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:07:02,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:03,378 INFO L124 PetriNetUnfolderBase]: 1073/1997 cut-off events. [2024-06-28 00:07:03,378 INFO L125 PetriNetUnfolderBase]: For 361061/361061 co-relation queries the response was YES. [2024-06-28 00:07:03,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15079 conditions, 1997 events. 1073/1997 cut-off events. For 361061/361061 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 12346 event pairs, 152 based on Foata normal form. 16/2013 useless extension candidates. Maximal degree in co-relation 14869. Up to 1689 conditions per place. [2024-06-28 00:07:03,408 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 388 selfloop transitions, 73 changer transitions 20/483 dead transitions. [2024-06-28 00:07:03,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 545 places, 483 transitions, 7448 flow [2024-06-28 00:07:03,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 00:07:03,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 00:07:03,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 148 transitions. [2024-06-28 00:07:03,409 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36724565756823824 [2024-06-28 00:07:03,409 INFO L175 Difference]: Start difference. First operand has 533 places, 456 transitions, 6277 flow. Second operand 13 states and 148 transitions. [2024-06-28 00:07:03,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 545 places, 483 transitions, 7448 flow [2024-06-28 00:07:04,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 538 places, 483 transitions, 7283 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-28 00:07:04,804 INFO L231 Difference]: Finished difference. Result has 541 places, 452 transitions, 6237 flow [2024-06-28 00:07:04,804 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6122, PETRI_DIFFERENCE_MINUEND_PLACES=526, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=456, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=383, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=6237, PETRI_PLACES=541, PETRI_TRANSITIONS=452} [2024-06-28 00:07:04,805 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 511 predicate places. [2024-06-28 00:07:04,805 INFO L495 AbstractCegarLoop]: Abstraction has has 541 places, 452 transitions, 6237 flow [2024-06-28 00:07:04,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:04,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:04,805 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:07:04,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-28 00:07:04,806 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)] === [2024-06-28 00:07:04,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:04,806 INFO L85 PathProgramCache]: Analyzing trace with hash -389450481, now seen corresponding path program 12 times [2024-06-28 00:07:04,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:04,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991448856] [2024-06-28 00:07:04,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:04,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:04,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:06,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:07:06,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:06,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991448856] [2024-06-28 00:07:06,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991448856] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:06,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:06,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:07:06,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393819223] [2024-06-28 00:07:06,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:06,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:07:06,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:06,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:07:06,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:07:06,825 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:07:06,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 541 places, 452 transitions, 6237 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:06,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:06,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:07:06,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:07,557 INFO L124 PetriNetUnfolderBase]: 1039/1931 cut-off events. [2024-06-28 00:07:07,557 INFO L125 PetriNetUnfolderBase]: For 243835/243835 co-relation queries the response was YES. [2024-06-28 00:07:07,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14782 conditions, 1931 events. 1039/1931 cut-off events. For 243835/243835 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 11926 event pairs, 144 based on Foata normal form. 2/1933 useless extension candidates. Maximal degree in co-relation 14568. Up to 1515 conditions per place. [2024-06-28 00:07:07,586 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 378 selfloop transitions, 91 changer transitions 0/471 dead transitions. [2024-06-28 00:07:07,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 545 places, 471 transitions, 7553 flow [2024-06-28 00:07:07,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:07:07,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:07:07,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-28 00:07:07,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39296187683284456 [2024-06-28 00:07:07,588 INFO L175 Difference]: Start difference. First operand has 541 places, 452 transitions, 6237 flow. Second operand 11 states and 134 transitions. [2024-06-28 00:07:07,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 545 places, 471 transitions, 7553 flow [2024-06-28 00:07:09,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 534 places, 471 transitions, 7424 flow, removed 14 selfloop flow, removed 11 redundant places. [2024-06-28 00:07:09,007 INFO L231 Difference]: Finished difference. Result has 537 places, 455 transitions, 6394 flow [2024-06-28 00:07:09,008 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6114, PETRI_DIFFERENCE_MINUEND_PLACES=524, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=452, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6394, PETRI_PLACES=537, PETRI_TRANSITIONS=455} [2024-06-28 00:07:09,008 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 507 predicate places. [2024-06-28 00:07:09,008 INFO L495 AbstractCegarLoop]: Abstraction has has 537 places, 455 transitions, 6394 flow [2024-06-28 00:07:09,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:09,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:09,008 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:07:09,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-28 00:07:09,008 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)] === [2024-06-28 00:07:09,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:09,009 INFO L85 PathProgramCache]: Analyzing trace with hash -389300751, now seen corresponding path program 13 times [2024-06-28 00:07:09,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:09,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709025109] [2024-06-28 00:07:09,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:09,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:09,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:10,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:07:10,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:10,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709025109] [2024-06-28 00:07:10,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709025109] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:10,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:10,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:07:10,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620821135] [2024-06-28 00:07:10,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:10,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:07:10,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:10,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:07:10,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:07:11,112 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:07:11,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 537 places, 455 transitions, 6394 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:11,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:11,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:07:11,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:11,976 INFO L124 PetriNetUnfolderBase]: 1036/1926 cut-off events. [2024-06-28 00:07:11,976 INFO L125 PetriNetUnfolderBase]: For 225038/225038 co-relation queries the response was YES. [2024-06-28 00:07:12,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14542 conditions, 1926 events. 1036/1926 cut-off events. For 225038/225038 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 11909 event pairs, 149 based on Foata normal form. 2/1928 useless extension candidates. Maximal degree in co-relation 14329. Up to 1581 conditions per place. [2024-06-28 00:07:12,007 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 375 selfloop transitions, 91 changer transitions 0/468 dead transitions. [2024-06-28 00:07:12,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 547 places, 468 transitions, 7356 flow [2024-06-28 00:07:12,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:07:12,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:07:12,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-28 00:07:12,008 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3812316715542522 [2024-06-28 00:07:12,008 INFO L175 Difference]: Start difference. First operand has 537 places, 455 transitions, 6394 flow. Second operand 11 states and 130 transitions. [2024-06-28 00:07:12,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 547 places, 468 transitions, 7356 flow [2024-06-28 00:07:13,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 540 places, 468 transitions, 7106 flow, removed 43 selfloop flow, removed 7 redundant places. [2024-06-28 00:07:13,289 INFO L231 Difference]: Finished difference. Result has 541 places, 455 transitions, 6330 flow [2024-06-28 00:07:13,290 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6144, PETRI_DIFFERENCE_MINUEND_PLACES=530, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=455, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=364, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6330, PETRI_PLACES=541, PETRI_TRANSITIONS=455} [2024-06-28 00:07:13,290 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 511 predicate places. [2024-06-28 00:07:13,290 INFO L495 AbstractCegarLoop]: Abstraction has has 541 places, 455 transitions, 6330 flow [2024-06-28 00:07:13,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:13,291 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:13,291 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:07:13,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-28 00:07:13,291 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)] === [2024-06-28 00:07:13,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:13,292 INFO L85 PathProgramCache]: Analyzing trace with hash -531553551, now seen corresponding path program 14 times [2024-06-28 00:07:13,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:13,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903807409] [2024-06-28 00:07:13,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:13,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:13,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:15,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:07:15,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:15,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903807409] [2024-06-28 00:07:15,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903807409] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:15,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:15,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:07:15,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334335505] [2024-06-28 00:07:15,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:15,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:07:15,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:15,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:07:15,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:07:15,369 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:07:15,369 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 541 places, 455 transitions, 6330 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:15,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:15,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:07:15,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:16,044 INFO L124 PetriNetUnfolderBase]: 1055/1963 cut-off events. [2024-06-28 00:07:16,044 INFO L125 PetriNetUnfolderBase]: For 246213/246213 co-relation queries the response was YES. [2024-06-28 00:07:16,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14968 conditions, 1963 events. 1055/1963 cut-off events. For 246213/246213 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 12194 event pairs, 142 based on Foata normal form. 2/1965 useless extension candidates. Maximal degree in co-relation 14754. Up to 1380 conditions per place. [2024-06-28 00:07:16,075 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 380 selfloop transitions, 94 changer transitions 0/476 dead transitions. [2024-06-28 00:07:16,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 550 places, 476 transitions, 7686 flow [2024-06-28 00:07:16,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:07:16,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:07:16,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-28 00:07:16,076 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4064516129032258 [2024-06-28 00:07:16,077 INFO L175 Difference]: Start difference. First operand has 541 places, 455 transitions, 6330 flow. Second operand 10 states and 126 transitions. [2024-06-28 00:07:16,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 550 places, 476 transitions, 7686 flow [2024-06-28 00:07:17,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 541 places, 476 transitions, 7506 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-28 00:07:17,457 INFO L231 Difference]: Finished difference. Result has 544 places, 459 transitions, 6459 flow [2024-06-28 00:07:17,457 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6150, PETRI_DIFFERENCE_MINUEND_PLACES=532, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=455, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6459, PETRI_PLACES=544, PETRI_TRANSITIONS=459} [2024-06-28 00:07:17,457 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 514 predicate places. [2024-06-28 00:07:17,457 INFO L495 AbstractCegarLoop]: Abstraction has has 544 places, 459 transitions, 6459 flow [2024-06-28 00:07:17,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:17,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:17,458 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:07:17,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-28 00:07:17,458 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)] === [2024-06-28 00:07:17,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:17,458 INFO L85 PathProgramCache]: Analyzing trace with hash 668482733, now seen corresponding path program 15 times [2024-06-28 00:07:17,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:17,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415211456] [2024-06-28 00:07:17,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:17,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:17,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:19,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:07:19,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:19,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415211456] [2024-06-28 00:07:19,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415211456] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:19,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:19,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:07:19,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76910672] [2024-06-28 00:07:19,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:19,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:07:19,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:19,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:07:19,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:07:19,591 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:07:19,591 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 544 places, 459 transitions, 6459 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:19,591 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:19,591 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:07:19,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:20,319 INFO L124 PetriNetUnfolderBase]: 1084/2022 cut-off events. [2024-06-28 00:07:20,320 INFO L125 PetriNetUnfolderBase]: For 322212/322212 co-relation queries the response was YES. [2024-06-28 00:07:20,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15433 conditions, 2022 events. 1084/2022 cut-off events. For 322212/322212 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 12648 event pairs, 156 based on Foata normal form. 10/2032 useless extension candidates. Maximal degree in co-relation 15217. Up to 1753 conditions per place. [2024-06-28 00:07:20,353 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 383 selfloop transitions, 91 changer transitions 9/485 dead transitions. [2024-06-28 00:07:20,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 554 places, 485 transitions, 7638 flow [2024-06-28 00:07:20,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:07:20,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:07:20,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-28 00:07:20,354 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39882697947214074 [2024-06-28 00:07:20,354 INFO L175 Difference]: Start difference. First operand has 544 places, 459 transitions, 6459 flow. Second operand 11 states and 136 transitions. [2024-06-28 00:07:20,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 554 places, 485 transitions, 7638 flow [2024-06-28 00:07:21,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 544 places, 485 transitions, 7356 flow, removed 45 selfloop flow, removed 10 redundant places. [2024-06-28 00:07:21,844 INFO L231 Difference]: Finished difference. Result has 546 places, 462 transitions, 6412 flow [2024-06-28 00:07:21,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6181, PETRI_DIFFERENCE_MINUEND_PLACES=534, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=459, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=369, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6412, PETRI_PLACES=546, PETRI_TRANSITIONS=462} [2024-06-28 00:07:21,845 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 516 predicate places. [2024-06-28 00:07:21,845 INFO L495 AbstractCegarLoop]: Abstraction has has 546 places, 462 transitions, 6412 flow [2024-06-28 00:07:21,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:21,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:21,845 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:07:21,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-28 00:07:21,845 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)] === [2024-06-28 00:07:21,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:21,846 INFO L85 PathProgramCache]: Analyzing trace with hash 668280923, now seen corresponding path program 16 times [2024-06-28 00:07:21,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:21,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028819847] [2024-06-28 00:07:21,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:21,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:21,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:23,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:07:23,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:23,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028819847] [2024-06-28 00:07:23,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028819847] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:23,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:23,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:07:23,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262872237] [2024-06-28 00:07:23,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:23,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:07:23,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:23,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:07:23,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:07:24,195 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:07:24,196 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 546 places, 462 transitions, 6412 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:24,196 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:24,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:07:24,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:25,016 INFO L124 PetriNetUnfolderBase]: 1083/2027 cut-off events. [2024-06-28 00:07:25,016 INFO L125 PetriNetUnfolderBase]: For 358283/358283 co-relation queries the response was YES. [2024-06-28 00:07:25,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15013 conditions, 2027 events. 1083/2027 cut-off events. For 358283/358283 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 12663 event pairs, 159 based on Foata normal form. 16/2043 useless extension candidates. Maximal degree in co-relation 14800. Up to 1703 conditions per place. [2024-06-28 00:07:25,047 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 364 selfloop transitions, 98 changer transitions 20/484 dead transitions. [2024-06-28 00:07:25,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 558 places, 484 transitions, 7518 flow [2024-06-28 00:07:25,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 00:07:25,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 00:07:25,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 152 transitions. [2024-06-28 00:07:25,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3771712158808933 [2024-06-28 00:07:25,048 INFO L175 Difference]: Start difference. First operand has 546 places, 462 transitions, 6412 flow. Second operand 13 states and 152 transitions. [2024-06-28 00:07:25,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 558 places, 484 transitions, 7518 flow [2024-06-28 00:07:26,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 551 places, 484 transitions, 7305 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-28 00:07:26,595 INFO L231 Difference]: Finished difference. Result has 554 places, 453 transitions, 6304 flow [2024-06-28 00:07:26,595 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6199, PETRI_DIFFERENCE_MINUEND_PLACES=539, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=462, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=364, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=6304, PETRI_PLACES=554, PETRI_TRANSITIONS=453} [2024-06-28 00:07:26,596 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 524 predicate places. [2024-06-28 00:07:26,596 INFO L495 AbstractCegarLoop]: Abstraction has has 554 places, 453 transitions, 6304 flow [2024-06-28 00:07:26,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:26,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:26,596 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:07:26,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-28 00:07:26,596 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)] === [2024-06-28 00:07:26,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:26,597 INFO L85 PathProgramCache]: Analyzing trace with hash 468979133, now seen corresponding path program 17 times [2024-06-28 00:07:26,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:26,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966966409] [2024-06-28 00:07:26,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:26,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:26,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:28,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:07:28,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:28,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966966409] [2024-06-28 00:07:28,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966966409] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:28,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:28,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:07:28,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932028024] [2024-06-28 00:07:28,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:28,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:07:28,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:28,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:07:28,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:07:28,696 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:07:28,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 554 places, 453 transitions, 6304 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:28,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:28,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:07:28,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:29,562 INFO L124 PetriNetUnfolderBase]: 1041/1945 cut-off events. [2024-06-28 00:07:29,563 INFO L125 PetriNetUnfolderBase]: For 236166/236166 co-relation queries the response was YES. [2024-06-28 00:07:29,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14538 conditions, 1945 events. 1041/1945 cut-off events. For 236166/236166 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 12117 event pairs, 151 based on Foata normal form. 2/1947 useless extension candidates. Maximal degree in co-relation 14335. Up to 1606 conditions per place. [2024-06-28 00:07:29,595 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 362 selfloop transitions, 103 changer transitions 0/467 dead transitions. [2024-06-28 00:07:29,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 557 places, 467 transitions, 7286 flow [2024-06-28 00:07:29,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:07:29,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:07:29,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-28 00:07:29,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3782991202346041 [2024-06-28 00:07:29,596 INFO L175 Difference]: Start difference. First operand has 554 places, 453 transitions, 6304 flow. Second operand 11 states and 129 transitions. [2024-06-28 00:07:29,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 557 places, 467 transitions, 7286 flow [2024-06-28 00:07:30,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 545 places, 467 transitions, 7098 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-28 00:07:30,923 INFO L231 Difference]: Finished difference. Result has 546 places, 454 transitions, 6352 flow [2024-06-28 00:07:30,923 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6116, PETRI_DIFFERENCE_MINUEND_PLACES=535, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=453, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6352, PETRI_PLACES=546, PETRI_TRANSITIONS=454} [2024-06-28 00:07:30,923 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 516 predicate places. [2024-06-28 00:07:30,924 INFO L495 AbstractCegarLoop]: Abstraction has has 546 places, 454 transitions, 6352 flow [2024-06-28 00:07:30,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:30,924 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:30,924 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:07:30,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-28 00:07:30,924 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)] === [2024-06-28 00:07:30,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:30,925 INFO L85 PathProgramCache]: Analyzing trace with hash 474335933, now seen corresponding path program 18 times [2024-06-28 00:07:30,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:30,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682958102] [2024-06-28 00:07:30,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:30,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:30,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:32,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:07:32,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:32,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682958102] [2024-06-28 00:07:32,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682958102] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:32,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:32,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:07:32,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849399332] [2024-06-28 00:07:32,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:32,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:07:32,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:32,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:07:32,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:07:33,121 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:07:33,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 546 places, 454 transitions, 6352 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:33,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:33,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:07:33,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:33,813 INFO L124 PetriNetUnfolderBase]: 1056/1974 cut-off events. [2024-06-28 00:07:33,813 INFO L125 PetriNetUnfolderBase]: For 229282/229282 co-relation queries the response was YES. [2024-06-28 00:07:33,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14771 conditions, 1974 events. 1056/1974 cut-off events. For 229282/229282 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 12348 event pairs, 153 based on Foata normal form. 2/1976 useless extension candidates. Maximal degree in co-relation 14571. Up to 1717 conditions per place. [2024-06-28 00:07:33,841 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 384 selfloop transitions, 88 changer transitions 0/474 dead transitions. [2024-06-28 00:07:33,842 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 557 places, 474 transitions, 7442 flow [2024-06-28 00:07:33,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:07:33,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:07:33,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 137 transitions. [2024-06-28 00:07:33,843 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3682795698924731 [2024-06-28 00:07:33,843 INFO L175 Difference]: Start difference. First operand has 546 places, 454 transitions, 6352 flow. Second operand 12 states and 137 transitions. [2024-06-28 00:07:33,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 557 places, 474 transitions, 7442 flow [2024-06-28 00:07:35,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 548 places, 474 transitions, 7204 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-28 00:07:35,246 INFO L231 Difference]: Finished difference. Result has 551 places, 459 transitions, 6434 flow [2024-06-28 00:07:35,246 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6134, PETRI_DIFFERENCE_MINUEND_PLACES=537, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=454, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=366, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6434, PETRI_PLACES=551, PETRI_TRANSITIONS=459} [2024-06-28 00:07:35,247 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 521 predicate places. [2024-06-28 00:07:35,247 INFO L495 AbstractCegarLoop]: Abstraction has has 551 places, 459 transitions, 6434 flow [2024-06-28 00:07:35,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:35,247 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:35,247 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:07:35,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-28 00:07:35,247 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)] === [2024-06-28 00:07:35,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:35,247 INFO L85 PathProgramCache]: Analyzing trace with hash 468829403, now seen corresponding path program 19 times [2024-06-28 00:07:35,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:35,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420631338] [2024-06-28 00:07:35,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:35,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:35,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:37,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:07:37,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:37,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420631338] [2024-06-28 00:07:37,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420631338] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:37,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:37,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:07:37,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822681682] [2024-06-28 00:07:37,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:37,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:07:37,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:37,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:07:37,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:07:37,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:07:37,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 551 places, 459 transitions, 6434 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:37,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:37,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:07:37,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:37,931 INFO L124 PetriNetUnfolderBase]: 1064/1990 cut-off events. [2024-06-28 00:07:37,931 INFO L125 PetriNetUnfolderBase]: For 232808/232808 co-relation queries the response was YES. [2024-06-28 00:07:37,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14909 conditions, 1990 events. 1064/1990 cut-off events. For 232808/232808 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 12474 event pairs, 151 based on Foata normal form. 2/1992 useless extension candidates. Maximal degree in co-relation 14706. Up to 1523 conditions per place. [2024-06-28 00:07:37,961 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 370 selfloop transitions, 105 changer transitions 0/477 dead transitions. [2024-06-28 00:07:37,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 561 places, 477 transitions, 7755 flow [2024-06-28 00:07:37,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:07:37,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:07:37,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-28 00:07:37,962 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3841642228739003 [2024-06-28 00:07:37,962 INFO L175 Difference]: Start difference. First operand has 551 places, 459 transitions, 6434 flow. Second operand 11 states and 131 transitions. [2024-06-28 00:07:37,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 561 places, 477 transitions, 7755 flow [2024-06-28 00:07:39,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 553 places, 477 transitions, 7541 flow, removed 29 selfloop flow, removed 8 redundant places. [2024-06-28 00:07:39,241 INFO L231 Difference]: Finished difference. Result has 555 places, 461 transitions, 6504 flow [2024-06-28 00:07:39,241 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6220, PETRI_DIFFERENCE_MINUEND_PLACES=543, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=459, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6504, PETRI_PLACES=555, PETRI_TRANSITIONS=461} [2024-06-28 00:07:39,241 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 525 predicate places. [2024-06-28 00:07:39,241 INFO L495 AbstractCegarLoop]: Abstraction has has 555 places, 461 transitions, 6504 flow [2024-06-28 00:07:39,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:39,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:39,242 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:07:39,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-28 00:07:39,242 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)] === [2024-06-28 00:07:39,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:39,242 INFO L85 PathProgramCache]: Analyzing trace with hash 468973553, now seen corresponding path program 20 times [2024-06-28 00:07:39,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:39,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130017264] [2024-06-28 00:07:39,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:39,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:39,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:41,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:07:41,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:41,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130017264] [2024-06-28 00:07:41,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130017264] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:41,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:41,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:07:41,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224943418] [2024-06-28 00:07:41,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:41,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:07:41,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:41,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:07:41,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:07:41,174 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:07:41,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 555 places, 461 transitions, 6504 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:41,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:41,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:07:41,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:41,981 INFO L124 PetriNetUnfolderBase]: 1061/1985 cut-off events. [2024-06-28 00:07:41,981 INFO L125 PetriNetUnfolderBase]: For 219049/219049 co-relation queries the response was YES. [2024-06-28 00:07:42,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14602 conditions, 1985 events. 1061/1985 cut-off events. For 219049/219049 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 12417 event pairs, 152 based on Foata normal form. 2/1987 useless extension candidates. Maximal degree in co-relation 14397. Up to 1591 conditions per place. [2024-06-28 00:07:42,012 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 367 selfloop transitions, 106 changer transitions 0/475 dead transitions. [2024-06-28 00:07:42,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 565 places, 475 transitions, 7482 flow [2024-06-28 00:07:42,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:07:42,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:07:42,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-28 00:07:42,014 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3812316715542522 [2024-06-28 00:07:42,014 INFO L175 Difference]: Start difference. First operand has 555 places, 461 transitions, 6504 flow. Second operand 11 states and 130 transitions. [2024-06-28 00:07:42,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 565 places, 475 transitions, 7482 flow [2024-06-28 00:07:43,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 553 places, 475 transitions, 7097 flow, removed 43 selfloop flow, removed 12 redundant places. [2024-06-28 00:07:43,301 INFO L231 Difference]: Finished difference. Result has 554 places, 461 transitions, 6339 flow [2024-06-28 00:07:43,301 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6119, PETRI_DIFFERENCE_MINUEND_PLACES=543, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=461, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6339, PETRI_PLACES=554, PETRI_TRANSITIONS=461} [2024-06-28 00:07:43,301 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 524 predicate places. [2024-06-28 00:07:43,301 INFO L495 AbstractCegarLoop]: Abstraction has has 554 places, 461 transitions, 6339 flow [2024-06-28 00:07:43,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:43,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:43,302 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:07:43,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-28 00:07:43,302 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)] === [2024-06-28 00:07:43,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:43,302 INFO L85 PathProgramCache]: Analyzing trace with hash -701799411, now seen corresponding path program 21 times [2024-06-28 00:07:43,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:43,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384826882] [2024-06-28 00:07:43,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:43,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:43,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:45,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:07:45,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:45,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384826882] [2024-06-28 00:07:45,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384826882] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:45,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:45,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:07:45,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429596476] [2024-06-28 00:07:45,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:45,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:07:45,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:45,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:07:45,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:07:45,386 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:07:45,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 554 places, 461 transitions, 6339 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:45,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:45,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:07:45,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:46,147 INFO L124 PetriNetUnfolderBase]: 1072/2006 cut-off events. [2024-06-28 00:07:46,147 INFO L125 PetriNetUnfolderBase]: For 242002/242002 co-relation queries the response was YES. [2024-06-28 00:07:46,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14673 conditions, 2006 events. 1072/2006 cut-off events. For 242002/242002 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 12622 event pairs, 166 based on Foata normal form. 2/2008 useless extension candidates. Maximal degree in co-relation 14472. Up to 1473 conditions per place. [2024-06-28 00:07:46,177 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 339 selfloop transitions, 136 changer transitions 0/477 dead transitions. [2024-06-28 00:07:46,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 564 places, 477 transitions, 7645 flow [2024-06-28 00:07:46,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:07:46,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:07:46,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-28 00:07:46,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39589442815249265 [2024-06-28 00:07:46,179 INFO L175 Difference]: Start difference. First operand has 554 places, 461 transitions, 6339 flow. Second operand 11 states and 135 transitions. [2024-06-28 00:07:46,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 564 places, 477 transitions, 7645 flow [2024-06-28 00:07:47,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 546 places, 477 transitions, 7262 flow, removed 26 selfloop flow, removed 18 redundant places. [2024-06-28 00:07:47,428 INFO L231 Difference]: Finished difference. Result has 547 places, 463 transitions, 6282 flow [2024-06-28 00:07:47,428 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5960, PETRI_DIFFERENCE_MINUEND_PLACES=536, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=461, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6282, PETRI_PLACES=547, PETRI_TRANSITIONS=463} [2024-06-28 00:07:47,428 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 517 predicate places. [2024-06-28 00:07:47,428 INFO L495 AbstractCegarLoop]: Abstraction has has 547 places, 463 transitions, 6282 flow [2024-06-28 00:07:47,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:47,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:47,429 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:07:47,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-28 00:07:47,429 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)] === [2024-06-28 00:07:47,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:47,429 INFO L85 PathProgramCache]: Analyzing trace with hash -701793614, now seen corresponding path program 2 times [2024-06-28 00:07:47,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:47,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675498678] [2024-06-28 00:07:47,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:47,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:47,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:49,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:07:49,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:49,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675498678] [2024-06-28 00:07:49,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675498678] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:49,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:49,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:07:49,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026282284] [2024-06-28 00:07:49,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:49,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:07:49,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:49,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:07:49,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:07:49,827 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:07:49,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 547 places, 463 transitions, 6282 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:49,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:49,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:07:49,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:50,716 INFO L124 PetriNetUnfolderBase]: 1081/2021 cut-off events. [2024-06-28 00:07:50,717 INFO L125 PetriNetUnfolderBase]: For 228790/228790 co-relation queries the response was YES. [2024-06-28 00:07:50,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14452 conditions, 2021 events. 1081/2021 cut-off events. For 228790/228790 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 12714 event pairs, 167 based on Foata normal form. 1/2022 useless extension candidates. Maximal degree in co-relation 14260. Up to 1502 conditions per place. [2024-06-28 00:07:50,746 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 339 selfloop transitions, 139 changer transitions 0/480 dead transitions. [2024-06-28 00:07:50,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 556 places, 480 transitions, 7357 flow [2024-06-28 00:07:50,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:07:50,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:07:50,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-28 00:07:50,747 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4129032258064516 [2024-06-28 00:07:50,747 INFO L175 Difference]: Start difference. First operand has 547 places, 463 transitions, 6282 flow. Second operand 10 states and 128 transitions. [2024-06-28 00:07:50,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 556 places, 480 transitions, 7357 flow [2024-06-28 00:07:51,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 548 places, 480 transitions, 7074 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-28 00:07:51,907 INFO L231 Difference]: Finished difference. Result has 549 places, 468 transitions, 6380 flow [2024-06-28 00:07:51,908 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6001, PETRI_DIFFERENCE_MINUEND_PLACES=539, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=463, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6380, PETRI_PLACES=549, PETRI_TRANSITIONS=468} [2024-06-28 00:07:51,908 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 519 predicate places. [2024-06-28 00:07:51,908 INFO L495 AbstractCegarLoop]: Abstraction has has 549 places, 468 transitions, 6380 flow [2024-06-28 00:07:51,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:51,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:51,908 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:07:51,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-28 00:07:51,908 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)] === [2024-06-28 00:07:51,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:51,908 INFO L85 PathProgramCache]: Analyzing trace with hash 931124849, now seen corresponding path program 22 times [2024-06-28 00:07:51,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:51,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476047201] [2024-06-28 00:07:51,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:51,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:51,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:53,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:07:53,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:53,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476047201] [2024-06-28 00:07:53,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476047201] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:53,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:53,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:07:53,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770674224] [2024-06-28 00:07:53,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:53,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:07:53,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:53,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:07:53,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:07:54,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:07:54,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 549 places, 468 transitions, 6380 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:54,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:54,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:07:54,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:54,736 INFO L124 PetriNetUnfolderBase]: 1085/2029 cut-off events. [2024-06-28 00:07:54,736 INFO L125 PetriNetUnfolderBase]: For 240595/240595 co-relation queries the response was YES. [2024-06-28 00:07:54,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14550 conditions, 2029 events. 1085/2029 cut-off events. For 240595/240595 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 12746 event pairs, 167 based on Foata normal form. 2/2031 useless extension candidates. Maximal degree in co-relation 14357. Up to 1474 conditions per place. [2024-06-28 00:07:54,764 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 346 selfloop transitions, 136 changer transitions 0/484 dead transitions. [2024-06-28 00:07:54,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 559 places, 484 transitions, 7682 flow [2024-06-28 00:07:54,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:07:54,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:07:54,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-28 00:07:54,765 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39882697947214074 [2024-06-28 00:07:54,765 INFO L175 Difference]: Start difference. First operand has 549 places, 468 transitions, 6380 flow. Second operand 11 states and 136 transitions. [2024-06-28 00:07:54,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 559 places, 484 transitions, 7682 flow [2024-06-28 00:07:56,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 551 places, 484 transitions, 7355 flow, removed 28 selfloop flow, removed 8 redundant places. [2024-06-28 00:07:56,058 INFO L231 Difference]: Finished difference. Result has 552 places, 469 transitions, 6355 flow [2024-06-28 00:07:56,059 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6053, PETRI_DIFFERENCE_MINUEND_PLACES=541, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=468, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6355, PETRI_PLACES=552, PETRI_TRANSITIONS=469} [2024-06-28 00:07:56,059 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 522 predicate places. [2024-06-28 00:07:56,059 INFO L495 AbstractCegarLoop]: Abstraction has has 552 places, 469 transitions, 6355 flow [2024-06-28 00:07:56,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:56,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:56,059 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:07:56,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-06-28 00:07:56,059 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)] === [2024-06-28 00:07:56,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:56,060 INFO L85 PathProgramCache]: Analyzing trace with hash 927549929, now seen corresponding path program 23 times [2024-06-28 00:07:56,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:56,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034235886] [2024-06-28 00:07:56,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:56,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:56,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:57,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:07:57,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:57,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034235886] [2024-06-28 00:07:57,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034235886] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:57,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:57,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:07:57,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703948776] [2024-06-28 00:07:57,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:57,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:07:57,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:57,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:07:57,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:07:57,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:07:57,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 552 places, 469 transitions, 6355 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:57,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:57,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:07:57,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:58,366 INFO L124 PetriNetUnfolderBase]: 1089/2037 cut-off events. [2024-06-28 00:07:58,366 INFO L125 PetriNetUnfolderBase]: For 245597/245597 co-relation queries the response was YES. [2024-06-28 00:07:58,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14601 conditions, 2037 events. 1089/2037 cut-off events. For 245597/245597 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 12807 event pairs, 167 based on Foata normal form. 2/2039 useless extension candidates. Maximal degree in co-relation 14407. Up to 1341 conditions per place. [2024-06-28 00:07:58,397 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 346 selfloop transitions, 137 changer transitions 0/485 dead transitions. [2024-06-28 00:07:58,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 562 places, 485 transitions, 7657 flow [2024-06-28 00:07:58,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:07:58,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:07:58,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-28 00:07:58,398 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39296187683284456 [2024-06-28 00:07:58,398 INFO L175 Difference]: Start difference. First operand has 552 places, 469 transitions, 6355 flow. Second operand 11 states and 134 transitions. [2024-06-28 00:07:58,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 562 places, 485 transitions, 7657 flow [2024-06-28 00:07:59,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 553 places, 485 transitions, 7365 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-28 00:07:59,630 INFO L231 Difference]: Finished difference. Result has 554 places, 470 transitions, 6367 flow [2024-06-28 00:07:59,631 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6063, PETRI_DIFFERENCE_MINUEND_PLACES=543, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=469, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6367, PETRI_PLACES=554, PETRI_TRANSITIONS=470} [2024-06-28 00:07:59,631 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 524 predicate places. [2024-06-28 00:07:59,631 INFO L495 AbstractCegarLoop]: Abstraction has has 554 places, 470 transitions, 6367 flow [2024-06-28 00:07:59,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:59,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:59,631 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:07:59,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-06-28 00:07:59,631 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)] === [2024-06-28 00:07:59,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:59,631 INFO L85 PathProgramCache]: Analyzing trace with hash -1362666851, now seen corresponding path program 24 times [2024-06-28 00:07:59,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:59,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328401653] [2024-06-28 00:07:59,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:59,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:59,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:01,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:08:01,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:01,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328401653] [2024-06-28 00:08:01,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328401653] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:01,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:01,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:08:01,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161038653] [2024-06-28 00:08:01,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:01,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:08:01,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:01,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:08:01,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:08:01,570 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:08:01,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 554 places, 470 transitions, 6367 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:01,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:01,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:08:01,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:02,310 INFO L124 PetriNetUnfolderBase]: 1086/2032 cut-off events. [2024-06-28 00:08:02,310 INFO L125 PetriNetUnfolderBase]: For 229433/229433 co-relation queries the response was YES. [2024-06-28 00:08:02,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14291 conditions, 2032 events. 1086/2032 cut-off events. For 229433/229433 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 12796 event pairs, 172 based on Foata normal form. 2/2034 useless extension candidates. Maximal degree in co-relation 14096. Up to 1516 conditions per place. [2024-06-28 00:08:02,341 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 344 selfloop transitions, 136 changer transitions 0/482 dead transitions. [2024-06-28 00:08:02,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 564 places, 482 transitions, 7359 flow [2024-06-28 00:08:02,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:08:02,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:08:02,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-28 00:08:02,342 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39002932551319647 [2024-06-28 00:08:02,342 INFO L175 Difference]: Start difference. First operand has 554 places, 470 transitions, 6367 flow. Second operand 11 states and 133 transitions. [2024-06-28 00:08:02,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 564 places, 482 transitions, 7359 flow [2024-06-28 00:08:03,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 554 places, 482 transitions, 7002 flow, removed 22 selfloop flow, removed 10 redundant places. [2024-06-28 00:08:03,642 INFO L231 Difference]: Finished difference. Result has 555 places, 470 transitions, 6286 flow [2024-06-28 00:08:03,642 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6010, PETRI_DIFFERENCE_MINUEND_PLACES=544, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=470, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=334, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6286, PETRI_PLACES=555, PETRI_TRANSITIONS=470} [2024-06-28 00:08:03,643 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 525 predicate places. [2024-06-28 00:08:03,643 INFO L495 AbstractCegarLoop]: Abstraction has has 555 places, 470 transitions, 6286 flow [2024-06-28 00:08:03,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:03,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:03,643 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:08:03,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-06-28 00:08:03,643 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)] === [2024-06-28 00:08:03,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:03,644 INFO L85 PathProgramCache]: Analyzing trace with hash -366008547, now seen corresponding path program 25 times [2024-06-28 00:08:03,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:03,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602433224] [2024-06-28 00:08:03,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:03,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:03,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:06,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:08:06,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:06,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602433224] [2024-06-28 00:08:06,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602433224] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:06,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:06,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:08:06,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61316428] [2024-06-28 00:08:06,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:06,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:08:06,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:06,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:08:06,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:08:06,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:08:06,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 555 places, 470 transitions, 6286 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:06,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:06,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:08:06,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:07,026 INFO L124 PetriNetUnfolderBase]: 1139/2140 cut-off events. [2024-06-28 00:08:07,026 INFO L125 PetriNetUnfolderBase]: For 414715/414715 co-relation queries the response was YES. [2024-06-28 00:08:07,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16662 conditions, 2140 events. 1139/2140 cut-off events. For 414715/414715 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 13519 event pairs, 186 based on Foata normal form. 8/2148 useless extension candidates. Maximal degree in co-relation 16468. Up to 1588 conditions per place. [2024-06-28 00:08:07,060 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 373 selfloop transitions, 113 changer transitions 10/498 dead transitions. [2024-06-28 00:08:07,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 565 places, 498 transitions, 8166 flow [2024-06-28 00:08:07,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:08:07,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:08:07,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 151 transitions. [2024-06-28 00:08:07,060 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44281524926686217 [2024-06-28 00:08:07,061 INFO L175 Difference]: Start difference. First operand has 555 places, 470 transitions, 6286 flow. Second operand 11 states and 151 transitions. [2024-06-28 00:08:07,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 565 places, 498 transitions, 8166 flow [2024-06-28 00:08:08,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 555 places, 498 transitions, 7892 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-28 00:08:08,909 INFO L231 Difference]: Finished difference. Result has 557 places, 470 transitions, 6320 flow [2024-06-28 00:08:08,909 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6012, PETRI_DIFFERENCE_MINUEND_PLACES=545, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=470, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6320, PETRI_PLACES=557, PETRI_TRANSITIONS=470} [2024-06-28 00:08:08,909 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 527 predicate places. [2024-06-28 00:08:08,909 INFO L495 AbstractCegarLoop]: Abstraction has has 557 places, 470 transitions, 6320 flow [2024-06-28 00:08:08,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:08,910 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:08,910 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:08:08,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2024-06-28 00:08:08,910 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)] === [2024-06-28 00:08:08,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:08,911 INFO L85 PathProgramCache]: Analyzing trace with hash -193316097, now seen corresponding path program 26 times [2024-06-28 00:08:08,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:08,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969738709] [2024-06-28 00:08:08,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:08,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:08,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:10,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:08:10,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:10,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969738709] [2024-06-28 00:08:10,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969738709] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:10,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:10,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:08:10,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048828860] [2024-06-28 00:08:10,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:10,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:08:10,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:10,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:08:10,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:08:11,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:08:11,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 557 places, 470 transitions, 6320 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:11,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:11,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:08:11,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:11,797 INFO L124 PetriNetUnfolderBase]: 1121/2102 cut-off events. [2024-06-28 00:08:11,797 INFO L125 PetriNetUnfolderBase]: For 365394/365394 co-relation queries the response was YES. [2024-06-28 00:08:11,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16579 conditions, 2102 events. 1121/2102 cut-off events. For 365394/365394 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 13238 event pairs, 190 based on Foata normal form. 2/2104 useless extension candidates. Maximal degree in co-relation 16383. Up to 1586 conditions per place. [2024-06-28 00:08:11,829 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 309 selfloop transitions, 171 changer transitions 0/482 dead transitions. [2024-06-28 00:08:11,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 564 places, 482 transitions, 7325 flow [2024-06-28 00:08:11,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:08:11,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:08:11,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-28 00:08:11,830 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3841642228739003 [2024-06-28 00:08:11,830 INFO L175 Difference]: Start difference. First operand has 557 places, 470 transitions, 6320 flow. Second operand 11 states and 131 transitions. [2024-06-28 00:08:11,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 564 places, 482 transitions, 7325 flow [2024-06-28 00:08:13,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 557 places, 482 transitions, 7144 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-28 00:08:13,560 INFO L231 Difference]: Finished difference. Result has 558 places, 471 transitions, 6508 flow [2024-06-28 00:08:13,560 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6139, PETRI_DIFFERENCE_MINUEND_PLACES=547, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=470, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=170, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6508, PETRI_PLACES=558, PETRI_TRANSITIONS=471} [2024-06-28 00:08:13,560 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 528 predicate places. [2024-06-28 00:08:13,560 INFO L495 AbstractCegarLoop]: Abstraction has has 558 places, 471 transitions, 6508 flow [2024-06-28 00:08:13,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:13,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:13,561 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:08:13,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2024-06-28 00:08:13,561 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)] === [2024-06-28 00:08:13,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:13,561 INFO L85 PathProgramCache]: Analyzing trace with hash -185697041, now seen corresponding path program 3 times [2024-06-28 00:08:13,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:13,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543228087] [2024-06-28 00:08:13,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:13,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:13,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:15,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:08:15,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:15,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543228087] [2024-06-28 00:08:15,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543228087] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:15,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:15,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:08:15,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193300674] [2024-06-28 00:08:15,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:15,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:08:15,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:15,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:08:15,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:08:15,495 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 00:08:15,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 558 places, 471 transitions, 6508 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) [2024-06-28 00:08:15,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:15,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 00:08:15,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:16,140 INFO L124 PetriNetUnfolderBase]: 1137/2138 cut-off events. [2024-06-28 00:08:16,140 INFO L125 PetriNetUnfolderBase]: For 433315/433315 co-relation queries the response was YES. [2024-06-28 00:08:16,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16990 conditions, 2138 events. 1137/2138 cut-off events. For 433315/433315 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 13527 event pairs, 191 based on Foata normal form. 10/2148 useless extension candidates. Maximal degree in co-relation 16795. Up to 1564 conditions per place. [2024-06-28 00:08:16,173 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 302 selfloop transitions, 172 changer transitions 11/488 dead transitions. [2024-06-28 00:08:16,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 568 places, 488 transitions, 7646 flow [2024-06-28 00:08:16,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:08:16,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:08:16,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 151 transitions. [2024-06-28 00:08:16,174 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44281524926686217 [2024-06-28 00:08:16,174 INFO L175 Difference]: Start difference. First operand has 558 places, 471 transitions, 6508 flow. Second operand 11 states and 151 transitions. [2024-06-28 00:08:16,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 568 places, 488 transitions, 7646 flow [2024-06-28 00:08:18,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 559 places, 488 transitions, 7288 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-28 00:08:18,191 INFO L231 Difference]: Finished difference. Result has 560 places, 468 transitions, 6477 flow [2024-06-28 00:08:18,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6150, PETRI_DIFFERENCE_MINUEND_PLACES=549, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=471, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=172, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6477, PETRI_PLACES=560, PETRI_TRANSITIONS=468} [2024-06-28 00:08:18,192 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 530 predicate places. [2024-06-28 00:08:18,192 INFO L495 AbstractCegarLoop]: Abstraction has has 560 places, 468 transitions, 6477 flow [2024-06-28 00:08:18,192 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) [2024-06-28 00:08:18,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:18,193 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:08:18,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2024-06-28 00:08:18,193 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)] === [2024-06-28 00:08:18,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:18,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1326170735, now seen corresponding path program 27 times [2024-06-28 00:08:18,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:18,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629997606] [2024-06-28 00:08:18,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:18,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:18,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:20,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:08:20,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:20,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629997606] [2024-06-28 00:08:20,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629997606] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:20,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:20,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:08:20,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535581968] [2024-06-28 00:08:20,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:20,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:08:20,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:20,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:08:20,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:08:20,801 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:08:20,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 560 places, 468 transitions, 6477 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:20,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:20,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:08:20,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:21,635 INFO L124 PetriNetUnfolderBase]: 1154/2177 cut-off events. [2024-06-28 00:08:21,635 INFO L125 PetriNetUnfolderBase]: For 512039/512039 co-relation queries the response was YES. [2024-06-28 00:08:21,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18649 conditions, 2177 events. 1154/2177 cut-off events. For 512039/512039 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 13796 event pairs, 203 based on Foata normal form. 8/2185 useless extension candidates. Maximal degree in co-relation 18453. Up to 1508 conditions per place. [2024-06-28 00:08:21,670 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 345 selfloop transitions, 138 changer transitions 10/495 dead transitions. [2024-06-28 00:08:21,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 567 places, 495 transitions, 8361 flow [2024-06-28 00:08:21,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:08:21,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:08:21,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 148 transitions. [2024-06-28 00:08:21,671 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4340175953079179 [2024-06-28 00:08:21,671 INFO L175 Difference]: Start difference. First operand has 560 places, 468 transitions, 6477 flow. Second operand 11 states and 148 transitions. [2024-06-28 00:08:21,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 567 places, 495 transitions, 8361 flow [2024-06-28 00:08:24,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 557 places, 495 transitions, 7987 flow, removed 15 selfloop flow, removed 10 redundant places. [2024-06-28 00:08:24,079 INFO L231 Difference]: Finished difference. Result has 559 places, 467 transitions, 6489 flow [2024-06-28 00:08:24,079 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6121, PETRI_DIFFERENCE_MINUEND_PLACES=547, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=468, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6489, PETRI_PLACES=559, PETRI_TRANSITIONS=467} [2024-06-28 00:08:24,080 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 529 predicate places. [2024-06-28 00:08:24,080 INFO L495 AbstractCegarLoop]: Abstraction has has 559 places, 467 transitions, 6489 flow [2024-06-28 00:08:24,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:24,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:24,080 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:08:24,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2024-06-28 00:08:24,080 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)] === [2024-06-28 00:08:24,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:24,081 INFO L85 PathProgramCache]: Analyzing trace with hash 162050460, now seen corresponding path program 3 times [2024-06-28 00:08:24,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:24,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377307623] [2024-06-28 00:08:24,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:24,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:24,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:25,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:08:25,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:25,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377307623] [2024-06-28 00:08:25,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377307623] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:25,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:25,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:08:25,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566040965] [2024-06-28 00:08:25,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:25,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:08:25,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:25,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:08:25,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:08:26,055 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:08:26,056 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 559 places, 467 transitions, 6489 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:26,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:26,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:08:26,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:26,842 INFO L124 PetriNetUnfolderBase]: 1130/2128 cut-off events. [2024-06-28 00:08:26,842 INFO L125 PetriNetUnfolderBase]: For 438556/438556 co-relation queries the response was YES. [2024-06-28 00:08:26,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18208 conditions, 2128 events. 1130/2128 cut-off events. For 438556/438556 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 13421 event pairs, 205 based on Foata normal form. 1/2129 useless extension candidates. Maximal degree in co-relation 18012. Up to 1589 conditions per place. [2024-06-28 00:08:26,874 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 331 selfloop transitions, 143 changer transitions 0/476 dead transitions. [2024-06-28 00:08:26,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 565 places, 476 transitions, 7457 flow [2024-06-28 00:08:26,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:08:26,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:08:26,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-28 00:08:26,875 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4096774193548387 [2024-06-28 00:08:26,875 INFO L175 Difference]: Start difference. First operand has 559 places, 467 transitions, 6489 flow. Second operand 10 states and 127 transitions. [2024-06-28 00:08:26,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 565 places, 476 transitions, 7457 flow [2024-06-28 00:08:29,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 557 places, 476 transitions, 7218 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-28 00:08:29,042 INFO L231 Difference]: Finished difference. Result has 558 places, 467 transitions, 6558 flow [2024-06-28 00:08:29,042 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6250, PETRI_DIFFERENCE_MINUEND_PLACES=548, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=467, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6558, PETRI_PLACES=558, PETRI_TRANSITIONS=467} [2024-06-28 00:08:29,042 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 528 predicate places. [2024-06-28 00:08:29,043 INFO L495 AbstractCegarLoop]: Abstraction has has 558 places, 467 transitions, 6558 flow [2024-06-28 00:08:29,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:29,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:29,043 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:08:29,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2024-06-28 00:08:29,043 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)] === [2024-06-28 00:08:29,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:29,043 INFO L85 PathProgramCache]: Analyzing trace with hash 156480473, now seen corresponding path program 28 times [2024-06-28 00:08:29,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:29,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027453911] [2024-06-28 00:08:29,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:29,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:29,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:30,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:08:30,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:30,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027453911] [2024-06-28 00:08:30,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027453911] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:30,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:30,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:08:30,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079944515] [2024-06-28 00:08:30,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:30,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:08:30,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:30,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:08:30,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:08:31,100 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:08:31,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 558 places, 467 transitions, 6558 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:31,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:31,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:08:31,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:31,947 INFO L124 PetriNetUnfolderBase]: 1141/2149 cut-off events. [2024-06-28 00:08:31,947 INFO L125 PetriNetUnfolderBase]: For 454882/454882 co-relation queries the response was YES. [2024-06-28 00:08:31,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18665 conditions, 2149 events. 1141/2149 cut-off events. For 454882/454882 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 13581 event pairs, 209 based on Foata normal form. 2/2151 useless extension candidates. Maximal degree in co-relation 18470. Up to 1616 conditions per place. [2024-06-28 00:08:31,981 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 353 selfloop transitions, 128 changer transitions 0/483 dead transitions. [2024-06-28 00:08:31,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 568 places, 483 transitions, 7885 flow [2024-06-28 00:08:31,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:08:31,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:08:31,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-28 00:08:31,982 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40762463343108507 [2024-06-28 00:08:31,982 INFO L175 Difference]: Start difference. First operand has 558 places, 467 transitions, 6558 flow. Second operand 11 states and 139 transitions. [2024-06-28 00:08:31,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 568 places, 483 transitions, 7885 flow [2024-06-28 00:08:34,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 560 places, 483 transitions, 7611 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-28 00:08:34,293 INFO L231 Difference]: Finished difference. Result has 561 places, 469 transitions, 6592 flow [2024-06-28 00:08:34,293 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6284, PETRI_DIFFERENCE_MINUEND_PLACES=550, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=467, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6592, PETRI_PLACES=561, PETRI_TRANSITIONS=469} [2024-06-28 00:08:34,293 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 531 predicate places. [2024-06-28 00:08:34,293 INFO L495 AbstractCegarLoop]: Abstraction has has 561 places, 469 transitions, 6592 flow [2024-06-28 00:08:34,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:34,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:34,293 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:08:34,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2024-06-28 00:08:34,293 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)] === [2024-06-28 00:08:34,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:34,294 INFO L85 PathProgramCache]: Analyzing trace with hash 1946302313, now seen corresponding path program 29 times [2024-06-28 00:08:34,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:34,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189403370] [2024-06-28 00:08:34,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:34,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:34,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:36,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:08:36,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:36,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189403370] [2024-06-28 00:08:36,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189403370] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:36,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:36,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:08:36,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99483439] [2024-06-28 00:08:36,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:36,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:08:36,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:36,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:08:36,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:08:36,325 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:08:36,326 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 561 places, 469 transitions, 6592 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:36,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:36,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:08:36,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:37,198 INFO L124 PetriNetUnfolderBase]: 1145/2157 cut-off events. [2024-06-28 00:08:37,198 INFO L125 PetriNetUnfolderBase]: For 465537/465537 co-relation queries the response was YES. [2024-06-28 00:08:37,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18773 conditions, 2157 events. 1145/2157 cut-off events. For 465537/465537 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 13638 event pairs, 204 based on Foata normal form. 2/2159 useless extension candidates. Maximal degree in co-relation 18577. Up to 1804 conditions per place. [2024-06-28 00:08:37,325 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 349 selfloop transitions, 134 changer transitions 0/485 dead transitions. [2024-06-28 00:08:37,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 574 places, 485 transitions, 7624 flow [2024-06-28 00:08:37,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-28 00:08:37,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-28 00:08:37,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 158 transitions. [2024-06-28 00:08:37,327 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3640552995391705 [2024-06-28 00:08:37,327 INFO L175 Difference]: Start difference. First operand has 561 places, 469 transitions, 6592 flow. Second operand 14 states and 158 transitions. [2024-06-28 00:08:37,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 574 places, 485 transitions, 7624 flow [2024-06-28 00:08:39,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 567 places, 485 transitions, 7454 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-28 00:08:39,620 INFO L231 Difference]: Finished difference. Result has 568 places, 471 transitions, 6732 flow [2024-06-28 00:08:39,620 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6422, PETRI_DIFFERENCE_MINUEND_PLACES=554, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=469, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=6732, PETRI_PLACES=568, PETRI_TRANSITIONS=471} [2024-06-28 00:08:39,621 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 538 predicate places. [2024-06-28 00:08:39,621 INFO L495 AbstractCegarLoop]: Abstraction has has 568 places, 471 transitions, 6732 flow [2024-06-28 00:08:39,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:39,621 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:39,621 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:08:39,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2024-06-28 00:08:39,622 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)] === [2024-06-28 00:08:39,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:39,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1933646803, now seen corresponding path program 30 times [2024-06-28 00:08:39,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:39,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730275569] [2024-06-28 00:08:39,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:39,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:39,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:41,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:08:41,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:41,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730275569] [2024-06-28 00:08:41,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730275569] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:41,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:41,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:08:41,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485927649] [2024-06-28 00:08:41,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:41,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:08:41,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:41,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:08:41,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:08:41,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:08:41,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 568 places, 471 transitions, 6732 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:41,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:41,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:08:41,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:42,468 INFO L124 PetriNetUnfolderBase]: 1142/2152 cut-off events. [2024-06-28 00:08:42,468 INFO L125 PetriNetUnfolderBase]: For 450711/450711 co-relation queries the response was YES. [2024-06-28 00:08:42,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18704 conditions, 2152 events. 1142/2152 cut-off events. For 450711/450711 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 13587 event pairs, 206 based on Foata normal form. 2/2154 useless extension candidates. Maximal degree in co-relation 18506. Up to 1636 conditions per place. [2024-06-28 00:08:42,504 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 353 selfloop transitions, 128 changer transitions 0/483 dead transitions. [2024-06-28 00:08:42,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 578 places, 483 transitions, 7731 flow [2024-06-28 00:08:42,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:08:42,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:08:42,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-28 00:08:42,505 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40175953079178883 [2024-06-28 00:08:42,505 INFO L175 Difference]: Start difference. First operand has 568 places, 471 transitions, 6732 flow. Second operand 11 states and 137 transitions. [2024-06-28 00:08:42,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 578 places, 483 transitions, 7731 flow [2024-06-28 00:08:44,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 568 places, 483 transitions, 7432 flow, removed 26 selfloop flow, removed 10 redundant places. [2024-06-28 00:08:44,708 INFO L231 Difference]: Finished difference. Result has 569 places, 471 transitions, 6695 flow [2024-06-28 00:08:44,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6435, PETRI_DIFFERENCE_MINUEND_PLACES=558, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=471, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=343, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6695, PETRI_PLACES=569, PETRI_TRANSITIONS=471} [2024-06-28 00:08:44,708 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 539 predicate places. [2024-06-28 00:08:44,708 INFO L495 AbstractCegarLoop]: Abstraction has has 569 places, 471 transitions, 6695 flow [2024-06-28 00:08:44,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:44,708 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:44,709 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:08:44,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2024-06-28 00:08:44,709 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)] === [2024-06-28 00:08:44,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:44,709 INFO L85 PathProgramCache]: Analyzing trace with hash 2127586213, now seen corresponding path program 31 times [2024-06-28 00:08:44,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:44,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056292555] [2024-06-28 00:08:44,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:44,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:44,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:46,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:08:46,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:46,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056292555] [2024-06-28 00:08:46,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056292555] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:46,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:46,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:08:46,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868637638] [2024-06-28 00:08:46,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:46,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:08:46,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:46,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:08:46,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:08:46,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:08:46,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 569 places, 471 transitions, 6695 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:46,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:46,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:08:46,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:47,595 INFO L124 PetriNetUnfolderBase]: 1146/2160 cut-off events. [2024-06-28 00:08:47,595 INFO L125 PetriNetUnfolderBase]: For 457068/457068 co-relation queries the response was YES. [2024-06-28 00:08:47,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18730 conditions, 2160 events. 1146/2160 cut-off events. For 457068/457068 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 13663 event pairs, 209 based on Foata normal form. 2/2162 useless extension candidates. Maximal degree in co-relation 18531. Up to 1644 conditions per place. [2024-06-28 00:08:47,630 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 352 selfloop transitions, 130 changer transitions 0/484 dead transitions. [2024-06-28 00:08:47,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 579 places, 484 transitions, 7721 flow [2024-06-28 00:08:47,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:08:47,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:08:47,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-28 00:08:47,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39882697947214074 [2024-06-28 00:08:47,631 INFO L175 Difference]: Start difference. First operand has 569 places, 471 transitions, 6695 flow. Second operand 11 states and 136 transitions. [2024-06-28 00:08:47,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 579 places, 484 transitions, 7721 flow [2024-06-28 00:08:49,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 569 places, 484 transitions, 7463 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-28 00:08:49,853 INFO L231 Difference]: Finished difference. Result has 570 places, 472 transitions, 6730 flow [2024-06-28 00:08:49,853 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6437, PETRI_DIFFERENCE_MINUEND_PLACES=559, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=471, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6730, PETRI_PLACES=570, PETRI_TRANSITIONS=472} [2024-06-28 00:08:49,853 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 540 predicate places. [2024-06-28 00:08:49,853 INFO L495 AbstractCegarLoop]: Abstraction has has 570 places, 472 transitions, 6730 flow [2024-06-28 00:08:49,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:49,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:49,854 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:08:49,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2024-06-28 00:08:49,854 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)] === [2024-06-28 00:08:49,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:49,855 INFO L85 PathProgramCache]: Analyzing trace with hash 434294107, now seen corresponding path program 4 times [2024-06-28 00:08:49,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:49,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536267479] [2024-06-28 00:08:49,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:49,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:49,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:51,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:08:51,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:51,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536267479] [2024-06-28 00:08:51,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536267479] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:51,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:51,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:08:51,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489694596] [2024-06-28 00:08:51,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:51,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:08:51,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:51,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:08:51,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:08:51,973 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:08:51,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 570 places, 472 transitions, 6730 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:51,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:51,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:08:51,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:52,699 INFO L124 PetriNetUnfolderBase]: 1172/2214 cut-off events. [2024-06-28 00:08:52,699 INFO L125 PetriNetUnfolderBase]: For 541401/541401 co-relation queries the response was YES. [2024-06-28 00:08:52,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20320 conditions, 2214 events. 1172/2214 cut-off events. For 541401/541401 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 14036 event pairs, 226 based on Foata normal form. 2/2216 useless extension candidates. Maximal degree in co-relation 20120. Up to 1816 conditions per place. [2024-06-28 00:08:52,735 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 356 selfloop transitions, 132 changer transitions 0/490 dead transitions. [2024-06-28 00:08:52,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 580 places, 490 transitions, 8132 flow [2024-06-28 00:08:52,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:08:52,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:08:52,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-28 00:08:52,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40762463343108507 [2024-06-28 00:08:52,736 INFO L175 Difference]: Start difference. First operand has 570 places, 472 transitions, 6730 flow. Second operand 11 states and 139 transitions. [2024-06-28 00:08:52,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 580 places, 490 transitions, 8132 flow [2024-06-28 00:08:55,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 571 places, 490 transitions, 7850 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-28 00:08:55,317 INFO L231 Difference]: Finished difference. Result has 572 places, 473 transitions, 6752 flow [2024-06-28 00:08:55,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6448, PETRI_DIFFERENCE_MINUEND_PLACES=561, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=472, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6752, PETRI_PLACES=572, PETRI_TRANSITIONS=473} [2024-06-28 00:08:55,317 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 542 predicate places. [2024-06-28 00:08:55,317 INFO L495 AbstractCegarLoop]: Abstraction has has 572 places, 473 transitions, 6752 flow [2024-06-28 00:08:55,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:55,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:55,318 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:08:55,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2024-06-28 00:08:55,318 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)] === [2024-06-28 00:08:55,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:55,318 INFO L85 PathProgramCache]: Analyzing trace with hash -783654853, now seen corresponding path program 32 times [2024-06-28 00:08:55,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:55,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234235834] [2024-06-28 00:08:55,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:55,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:55,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:57,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:08:57,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:57,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234235834] [2024-06-28 00:08:57,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234235834] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:57,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:57,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:08:57,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576885653] [2024-06-28 00:08:57,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:57,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:08:57,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:57,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:08:57,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:08:57,369 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:08:57,369 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 572 places, 473 transitions, 6752 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:57,369 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:57,369 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:08:57,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:58,145 INFO L124 PetriNetUnfolderBase]: 1176/2222 cut-off events. [2024-06-28 00:08:58,145 INFO L125 PetriNetUnfolderBase]: For 553211/553211 co-relation queries the response was YES. [2024-06-28 00:08:58,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20435 conditions, 2222 events. 1176/2222 cut-off events. For 553211/553211 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 14150 event pairs, 218 based on Foata normal form. 2/2224 useless extension candidates. Maximal degree in co-relation 20234. Up to 1692 conditions per place. [2024-06-28 00:08:58,180 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 337 selfloop transitions, 147 changer transitions 0/486 dead transitions. [2024-06-28 00:08:58,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 582 places, 486 transitions, 7775 flow [2024-06-28 00:08:58,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:08:58,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:08:58,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-28 00:08:58,181 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39002932551319647 [2024-06-28 00:08:58,181 INFO L175 Difference]: Start difference. First operand has 572 places, 473 transitions, 6752 flow. Second operand 11 states and 133 transitions. [2024-06-28 00:08:58,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 582 places, 486 transitions, 7775 flow [2024-06-28 00:09:00,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 573 places, 486 transitions, 7481 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-28 00:09:00,925 INFO L231 Difference]: Finished difference. Result has 574 places, 474 transitions, 6787 flow [2024-06-28 00:09:00,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6458, PETRI_DIFFERENCE_MINUEND_PLACES=563, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=473, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6787, PETRI_PLACES=574, PETRI_TRANSITIONS=474} [2024-06-28 00:09:00,925 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 544 predicate places. [2024-06-28 00:09:00,925 INFO L495 AbstractCegarLoop]: Abstraction has has 574 places, 474 transitions, 6787 flow [2024-06-28 00:09:00,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:00,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:00,926 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:09:00,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2024-06-28 00:09:00,926 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)] === [2024-06-28 00:09:00,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:00,926 INFO L85 PathProgramCache]: Analyzing trace with hash 453419241, now seen corresponding path program 33 times [2024-06-28 00:09:00,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:00,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214151558] [2024-06-28 00:09:00,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:00,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:00,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:02,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:09:02,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:02,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214151558] [2024-06-28 00:09:02,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214151558] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:02,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:02,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:09:02,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129290594] [2024-06-28 00:09:02,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:02,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:09:02,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:02,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:09:02,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:09:02,954 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:09:02,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 574 places, 474 transitions, 6787 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:02,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:02,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:09:02,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:03,815 INFO L124 PetriNetUnfolderBase]: 1158/2184 cut-off events. [2024-06-28 00:09:03,816 INFO L125 PetriNetUnfolderBase]: For 478271/478271 co-relation queries the response was YES. [2024-06-28 00:09:03,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19078 conditions, 2184 events. 1158/2184 cut-off events. For 478271/478271 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 13853 event pairs, 211 based on Foata normal form. 2/2186 useless extension candidates. Maximal degree in co-relation 18876. Up to 1645 conditions per place. [2024-06-28 00:09:03,848 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 357 selfloop transitions, 131 changer transitions 0/490 dead transitions. [2024-06-28 00:09:03,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 584 places, 490 transitions, 8156 flow [2024-06-28 00:09:03,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:09:03,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:09:03,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-28 00:09:03,849 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40175953079178883 [2024-06-28 00:09:03,849 INFO L175 Difference]: Start difference. First operand has 574 places, 474 transitions, 6787 flow. Second operand 11 states and 137 transitions. [2024-06-28 00:09:03,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 584 places, 490 transitions, 8156 flow [2024-06-28 00:09:06,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 575 places, 490 transitions, 7838 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-28 00:09:06,195 INFO L231 Difference]: Finished difference. Result has 576 places, 476 transitions, 6799 flow [2024-06-28 00:09:06,195 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6469, PETRI_DIFFERENCE_MINUEND_PLACES=565, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=474, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6799, PETRI_PLACES=576, PETRI_TRANSITIONS=476} [2024-06-28 00:09:06,195 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 546 predicate places. [2024-06-28 00:09:06,195 INFO L495 AbstractCegarLoop]: Abstraction has has 576 places, 476 transitions, 6799 flow [2024-06-28 00:09:06,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:06,196 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:06,196 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:09:06,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2024-06-28 00:09:06,196 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)] === [2024-06-28 00:09:06,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:06,196 INFO L85 PathProgramCache]: Analyzing trace with hash 461053177, now seen corresponding path program 5 times [2024-06-28 00:09:06,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:06,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587482532] [2024-06-28 00:09:06,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:06,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:06,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:08,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:09:08,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:08,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587482532] [2024-06-28 00:09:08,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587482532] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:08,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:08,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:09:08,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769446677] [2024-06-28 00:09:08,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:08,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:09:08,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:08,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:09:08,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:09:08,360 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:09:08,360 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 576 places, 476 transitions, 6799 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:08,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:08,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:09:08,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:09,048 INFO L124 PetriNetUnfolderBase]: 1184/2238 cut-off events. [2024-06-28 00:09:09,049 INFO L125 PetriNetUnfolderBase]: For 570679/570679 co-relation queries the response was YES. [2024-06-28 00:09:09,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20612 conditions, 2238 events. 1184/2238 cut-off events. For 570679/570679 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 14251 event pairs, 218 based on Foata normal form. 2/2240 useless extension candidates. Maximal degree in co-relation 20409. Up to 1801 conditions per place. [2024-06-28 00:09:09,085 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 381 selfloop transitions, 113 changer transitions 0/496 dead transitions. [2024-06-28 00:09:09,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 586 places, 496 transitions, 8293 flow [2024-06-28 00:09:09,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:09:09,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:09:09,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-28 00:09:09,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41055718475073316 [2024-06-28 00:09:09,086 INFO L175 Difference]: Start difference. First operand has 576 places, 476 transitions, 6799 flow. Second operand 11 states and 140 transitions. [2024-06-28 00:09:09,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 586 places, 496 transitions, 8293 flow [2024-06-28 00:09:11,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 579 places, 496 transitions, 8109 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-28 00:09:11,601 INFO L231 Difference]: Finished difference. Result has 580 places, 477 transitions, 6883 flow [2024-06-28 00:09:11,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6615, PETRI_DIFFERENCE_MINUEND_PLACES=569, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=476, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6883, PETRI_PLACES=580, PETRI_TRANSITIONS=477} [2024-06-28 00:09:11,601 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 550 predicate places. [2024-06-28 00:09:11,601 INFO L495 AbstractCegarLoop]: Abstraction has has 580 places, 477 transitions, 6883 flow [2024-06-28 00:09:11,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:11,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:11,601 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:09:11,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2024-06-28 00:09:11,602 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)] === [2024-06-28 00:09:11,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:11,602 INFO L85 PathProgramCache]: Analyzing trace with hash 2134736053, now seen corresponding path program 34 times [2024-06-28 00:09:11,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:11,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252328580] [2024-06-28 00:09:11,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:11,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:11,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:13,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:09:13,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:13,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252328580] [2024-06-28 00:09:13,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252328580] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:13,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:13,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:09:13,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199700741] [2024-06-28 00:09:13,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:13,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:09:13,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:13,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:09:13,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:09:13,370 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:09:13,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 580 places, 477 transitions, 6883 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:13,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:13,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:09:13,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:14,082 INFO L124 PetriNetUnfolderBase]: 1181/2233 cut-off events. [2024-06-28 00:09:14,082 INFO L125 PetriNetUnfolderBase]: For 554851/554851 co-relation queries the response was YES. [2024-06-28 00:09:14,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20484 conditions, 2233 events. 1181/2233 cut-off events. For 554851/554851 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 14237 event pairs, 219 based on Foata normal form. 2/2235 useless extension candidates. Maximal degree in co-relation 20279. Up to 1717 conditions per place. [2024-06-28 00:09:14,120 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 352 selfloop transitions, 134 changer transitions 0/488 dead transitions. [2024-06-28 00:09:14,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 590 places, 488 transitions, 7879 flow [2024-06-28 00:09:14,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:09:14,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:09:14,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-28 00:09:14,121 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39589442815249265 [2024-06-28 00:09:14,121 INFO L175 Difference]: Start difference. First operand has 580 places, 477 transitions, 6883 flow. Second operand 11 states and 135 transitions. [2024-06-28 00:09:14,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 590 places, 488 transitions, 7879 flow [2024-06-28 00:09:16,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 581 places, 488 transitions, 7599 flow, removed 28 selfloop flow, removed 9 redundant places. [2024-06-28 00:09:16,927 INFO L231 Difference]: Finished difference. Result has 582 places, 477 transitions, 6875 flow [2024-06-28 00:09:16,927 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6603, PETRI_DIFFERENCE_MINUEND_PLACES=571, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=477, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=343, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6875, PETRI_PLACES=582, PETRI_TRANSITIONS=477} [2024-06-28 00:09:16,927 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 552 predicate places. [2024-06-28 00:09:16,928 INFO L495 AbstractCegarLoop]: Abstraction has has 582 places, 477 transitions, 6875 flow [2024-06-28 00:09:16,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:16,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:16,928 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:09:16,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2024-06-28 00:09:16,928 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)] === [2024-06-28 00:09:16,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:16,929 INFO L85 PathProgramCache]: Analyzing trace with hash 363406899, now seen corresponding path program 6 times [2024-06-28 00:09:16,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:16,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717407881] [2024-06-28 00:09:16,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:16,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:16,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:18,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:09:18,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:18,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717407881] [2024-06-28 00:09:18,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717407881] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:18,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:18,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:09:18,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296393699] [2024-06-28 00:09:18,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:18,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:09:18,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:18,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:09:18,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:09:18,962 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:09:18,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 582 places, 477 transitions, 6875 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:18,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:18,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:09:18,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:19,681 INFO L124 PetriNetUnfolderBase]: 1156/2182 cut-off events. [2024-06-28 00:09:19,681 INFO L125 PetriNetUnfolderBase]: For 455641/455641 co-relation queries the response was YES. [2024-06-28 00:09:19,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18631 conditions, 2182 events. 1156/2182 cut-off events. For 455641/455641 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 13874 event pairs, 207 based on Foata normal form. 2/2184 useless extension candidates. Maximal degree in co-relation 18425. Up to 1842 conditions per place. [2024-06-28 00:09:19,717 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 375 selfloop transitions, 115 changer transitions 0/492 dead transitions. [2024-06-28 00:09:19,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 592 places, 492 transitions, 7964 flow [2024-06-28 00:09:19,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:09:19,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:09:19,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-28 00:09:19,718 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39589442815249265 [2024-06-28 00:09:19,718 INFO L175 Difference]: Start difference. First operand has 582 places, 477 transitions, 6875 flow. Second operand 11 states and 135 transitions. [2024-06-28 00:09:19,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 592 places, 492 transitions, 7964 flow [2024-06-28 00:09:22,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 582 places, 492 transitions, 7690 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-28 00:09:22,006 INFO L231 Difference]: Finished difference. Result has 583 places, 480 transitions, 6920 flow [2024-06-28 00:09:22,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6601, PETRI_DIFFERENCE_MINUEND_PLACES=572, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=477, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=364, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6920, PETRI_PLACES=583, PETRI_TRANSITIONS=480} [2024-06-28 00:09:22,006 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 553 predicate places. [2024-06-28 00:09:22,006 INFO L495 AbstractCegarLoop]: Abstraction has has 583 places, 480 transitions, 6920 flow [2024-06-28 00:09:22,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:22,006 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:22,006 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:09:22,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2024-06-28 00:09:22,007 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)] === [2024-06-28 00:09:22,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:22,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1416512331, now seen corresponding path program 35 times [2024-06-28 00:09:22,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:22,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184369981] [2024-06-28 00:09:22,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:22,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:22,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:23,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:09:23,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:23,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184369981] [2024-06-28 00:09:23,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184369981] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:23,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:23,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:09:23,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208778923] [2024-06-28 00:09:23,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:23,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:09:23,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:23,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:09:23,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:09:23,854 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:09:23,854 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 583 places, 480 transitions, 6920 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:23,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:23,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:09:23,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:24,520 INFO L124 PetriNetUnfolderBase]: 1160/2190 cut-off events. [2024-06-28 00:09:24,520 INFO L125 PetriNetUnfolderBase]: For 460869/460869 co-relation queries the response was YES. [2024-06-28 00:09:24,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18728 conditions, 2190 events. 1160/2190 cut-off events. For 460869/460869 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 13971 event pairs, 206 based on Foata normal form. 2/2192 useless extension candidates. Maximal degree in co-relation 18521. Up to 1674 conditions per place. [2024-06-28 00:09:24,556 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 321 selfloop transitions, 169 changer transitions 0/492 dead transitions. [2024-06-28 00:09:24,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 593 places, 492 transitions, 7957 flow [2024-06-28 00:09:24,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:09:24,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:09:24,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-28 00:09:24,557 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39002932551319647 [2024-06-28 00:09:24,557 INFO L175 Difference]: Start difference. First operand has 583 places, 480 transitions, 6920 flow. Second operand 11 states and 133 transitions. [2024-06-28 00:09:24,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 593 places, 492 transitions, 7957 flow [2024-06-28 00:09:26,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 587 places, 492 transitions, 7759 flow, removed 36 selfloop flow, removed 6 redundant places. [2024-06-28 00:09:26,894 INFO L231 Difference]: Finished difference. Result has 588 places, 481 transitions, 7099 flow [2024-06-28 00:09:26,894 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6722, PETRI_DIFFERENCE_MINUEND_PLACES=577, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=480, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=168, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7099, PETRI_PLACES=588, PETRI_TRANSITIONS=481} [2024-06-28 00:09:26,894 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 558 predicate places. [2024-06-28 00:09:26,894 INFO L495 AbstractCegarLoop]: Abstraction has has 588 places, 481 transitions, 7099 flow [2024-06-28 00:09:26,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:26,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:26,895 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:09:26,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2024-06-28 00:09:26,895 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)] === [2024-06-28 00:09:26,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:26,895 INFO L85 PathProgramCache]: Analyzing trace with hash -783649056, now seen corresponding path program 4 times [2024-06-28 00:09:26,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:26,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538351123] [2024-06-28 00:09:26,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:26,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:26,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:29,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:09:29,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:29,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538351123] [2024-06-28 00:09:29,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538351123] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:29,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:29,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:09:29,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925610650] [2024-06-28 00:09:29,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:29,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:09:29,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:29,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:09:29,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:09:29,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:09:29,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 588 places, 481 transitions, 7099 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:29,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:29,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:09:29,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:30,227 INFO L124 PetriNetUnfolderBase]: 1169/2205 cut-off events. [2024-06-28 00:09:30,227 INFO L125 PetriNetUnfolderBase]: For 453154/453154 co-relation queries the response was YES. [2024-06-28 00:09:30,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19088 conditions, 2205 events. 1169/2205 cut-off events. For 453154/453154 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 14058 event pairs, 209 based on Foata normal form. 1/2206 useless extension candidates. Maximal degree in co-relation 18879. Up to 1630 conditions per place. [2024-06-28 00:09:30,258 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 331 selfloop transitions, 167 changer transitions 0/500 dead transitions. [2024-06-28 00:09:30,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 598 places, 500 transitions, 8561 flow [2024-06-28 00:09:30,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:09:30,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:09:30,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-28 00:09:30,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40762463343108507 [2024-06-28 00:09:30,260 INFO L175 Difference]: Start difference. First operand has 588 places, 481 transitions, 7099 flow. Second operand 11 states and 139 transitions. [2024-06-28 00:09:30,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 598 places, 500 transitions, 8561 flow [2024-06-28 00:09:32,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 589 places, 500 transitions, 8195 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-28 00:09:32,560 INFO L231 Difference]: Finished difference. Result has 590 places, 486 transitions, 7169 flow [2024-06-28 00:09:32,560 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6733, PETRI_DIFFERENCE_MINUEND_PLACES=579, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=481, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=162, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7169, PETRI_PLACES=590, PETRI_TRANSITIONS=486} [2024-06-28 00:09:32,560 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 560 predicate places. [2024-06-28 00:09:32,560 INFO L495 AbstractCegarLoop]: Abstraction has has 590 places, 486 transitions, 7169 flow [2024-06-28 00:09:32,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:32,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:32,561 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:09:32,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2024-06-28 00:09:32,561 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)] === [2024-06-28 00:09:32,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:32,561 INFO L85 PathProgramCache]: Analyzing trace with hash -576995616, now seen corresponding path program 5 times [2024-06-28 00:09:32,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:32,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904630324] [2024-06-28 00:09:32,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:32,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:32,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:35,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:09:35,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:35,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904630324] [2024-06-28 00:09:35,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904630324] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:35,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:35,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 00:09:35,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936015674] [2024-06-28 00:09:35,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:35,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 00:09:35,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:35,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 00:09:35,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2024-06-28 00:09:35,222 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:09:35,222 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 590 places, 486 transitions, 7169 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:35,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:35,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:09:35,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:36,124 INFO L124 PetriNetUnfolderBase]: 1181/2225 cut-off events. [2024-06-28 00:09:36,124 INFO L125 PetriNetUnfolderBase]: For 463184/463184 co-relation queries the response was YES. [2024-06-28 00:09:36,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19329 conditions, 2225 events. 1181/2225 cut-off events. For 463184/463184 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 14223 event pairs, 205 based on Foata normal form. 1/2226 useless extension candidates. Maximal degree in co-relation 19119. Up to 1876 conditions per place. [2024-06-28 00:09:36,162 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 372 selfloop transitions, 132 changer transitions 0/506 dead transitions. [2024-06-28 00:09:36,163 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 601 places, 506 transitions, 8436 flow [2024-06-28 00:09:36,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:09:36,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:09:36,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 141 transitions. [2024-06-28 00:09:36,163 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3790322580645161 [2024-06-28 00:09:36,163 INFO L175 Difference]: Start difference. First operand has 590 places, 486 transitions, 7169 flow. Second operand 12 states and 141 transitions. [2024-06-28 00:09:36,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 601 places, 506 transitions, 8436 flow [2024-06-28 00:09:38,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 592 places, 506 transitions, 7965 flow, removed 54 selfloop flow, removed 9 redundant places. [2024-06-28 00:09:38,936 INFO L231 Difference]: Finished difference. Result has 594 places, 494 transitions, 7203 flow [2024-06-28 00:09:38,936 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6768, PETRI_DIFFERENCE_MINUEND_PLACES=581, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=486, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7203, PETRI_PLACES=594, PETRI_TRANSITIONS=494} [2024-06-28 00:09:38,936 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 564 predicate places. [2024-06-28 00:09:38,936 INFO L495 AbstractCegarLoop]: Abstraction has has 594 places, 494 transitions, 7203 flow [2024-06-28 00:09:38,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:38,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:38,936 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:09:38,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2024-06-28 00:09:38,937 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)] === [2024-06-28 00:09:38,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:38,938 INFO L85 PathProgramCache]: Analyzing trace with hash 1194600727, now seen corresponding path program 36 times [2024-06-28 00:09:38,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:38,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646659379] [2024-06-28 00:09:38,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:38,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:38,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:40,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:09:40,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:40,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646659379] [2024-06-28 00:09:40,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646659379] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:40,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:40,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:09:40,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208113591] [2024-06-28 00:09:40,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:40,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:09:40,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:40,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:09:40,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:09:40,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:09:40,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 594 places, 494 transitions, 7203 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:40,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:40,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:09:40,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:41,456 INFO L124 PetriNetUnfolderBase]: 1185/2233 cut-off events. [2024-06-28 00:09:41,456 INFO L125 PetriNetUnfolderBase]: For 480078/480078 co-relation queries the response was YES. [2024-06-28 00:09:41,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19302 conditions, 2233 events. 1185/2233 cut-off events. For 480078/480078 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 14280 event pairs, 209 based on Foata normal form. 2/2235 useless extension candidates. Maximal degree in co-relation 19090. Up to 1715 conditions per place. [2024-06-28 00:09:41,491 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 354 selfloop transitions, 150 changer transitions 0/506 dead transitions. [2024-06-28 00:09:41,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 604 places, 506 transitions, 8270 flow [2024-06-28 00:09:41,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:09:41,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:09:41,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-28 00:09:41,493 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39296187683284456 [2024-06-28 00:09:41,493 INFO L175 Difference]: Start difference. First operand has 594 places, 494 transitions, 7203 flow. Second operand 11 states and 134 transitions. [2024-06-28 00:09:41,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 604 places, 506 transitions, 8270 flow [2024-06-28 00:09:44,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 595 places, 506 transitions, 7988 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-28 00:09:44,089 INFO L231 Difference]: Finished difference. Result has 596 places, 495 transitions, 7262 flow [2024-06-28 00:09:44,089 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6921, PETRI_DIFFERENCE_MINUEND_PLACES=585, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=494, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7262, PETRI_PLACES=596, PETRI_TRANSITIONS=495} [2024-06-28 00:09:44,090 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 566 predicate places. [2024-06-28 00:09:44,090 INFO L495 AbstractCegarLoop]: Abstraction has has 596 places, 495 transitions, 7262 flow [2024-06-28 00:09:44,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:44,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:44,090 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:09:44,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2024-06-28 00:09:44,090 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)] === [2024-06-28 00:09:44,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:44,091 INFO L85 PathProgramCache]: Analyzing trace with hash 1194868133, now seen corresponding path program 7 times [2024-06-28 00:09:44,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:44,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974888504] [2024-06-28 00:09:44,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:44,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:44,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:46,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:09:46,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:46,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974888504] [2024-06-28 00:09:46,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974888504] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:46,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:46,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:09:46,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274323139] [2024-06-28 00:09:46,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:46,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:09:46,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:46,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:09:46,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:09:46,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:09:46,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 596 places, 495 transitions, 7262 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:46,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:46,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:09:46,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:46,808 INFO L124 PetriNetUnfolderBase]: 1189/2241 cut-off events. [2024-06-28 00:09:46,808 INFO L125 PetriNetUnfolderBase]: For 484555/484555 co-relation queries the response was YES. [2024-06-28 00:09:46,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19450 conditions, 2241 events. 1189/2241 cut-off events. For 484555/484555 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 14341 event pairs, 213 based on Foata normal form. 2/2243 useless extension candidates. Maximal degree in co-relation 19237. Up to 1903 conditions per place. [2024-06-28 00:09:46,845 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 384 selfloop transitions, 124 changer transitions 0/510 dead transitions. [2024-06-28 00:09:46,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 606 places, 510 transitions, 8393 flow [2024-06-28 00:09:46,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:09:46,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:09:46,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-28 00:09:46,849 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39589442815249265 [2024-06-28 00:09:46,849 INFO L175 Difference]: Start difference. First operand has 596 places, 495 transitions, 7262 flow. Second operand 11 states and 135 transitions. [2024-06-28 00:09:46,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 606 places, 510 transitions, 8393 flow [2024-06-28 00:09:49,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 597 places, 510 transitions, 8063 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-28 00:09:49,281 INFO L231 Difference]: Finished difference. Result has 598 places, 498 transitions, 7275 flow [2024-06-28 00:09:49,282 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6932, PETRI_DIFFERENCE_MINUEND_PLACES=587, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=495, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=373, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7275, PETRI_PLACES=598, PETRI_TRANSITIONS=498} [2024-06-28 00:09:49,282 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 568 predicate places. [2024-06-28 00:09:49,282 INFO L495 AbstractCegarLoop]: Abstraction has has 598 places, 498 transitions, 7275 flow [2024-06-28 00:09:49,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:49,282 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:49,282 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:09:49,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2024-06-28 00:09:49,283 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)] === [2024-06-28 00:09:49,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:49,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1525616675, now seen corresponding path program 37 times [2024-06-28 00:09:49,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:49,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758312722] [2024-06-28 00:09:49,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:49,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:49,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:51,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:09:51,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:51,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758312722] [2024-06-28 00:09:51,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758312722] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:51,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:51,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:09:51,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156572824] [2024-06-28 00:09:51,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:51,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:09:51,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:51,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:09:51,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:09:51,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:09:51,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 598 places, 498 transitions, 7275 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:51,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:51,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:09:51,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:52,374 INFO L124 PetriNetUnfolderBase]: 1200/2262 cut-off events. [2024-06-28 00:09:52,374 INFO L125 PetriNetUnfolderBase]: For 515115/515115 co-relation queries the response was YES. [2024-06-28 00:09:52,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19923 conditions, 2262 events. 1200/2262 cut-off events. For 515115/515115 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 14482 event pairs, 214 based on Foata normal form. 2/2264 useless extension candidates. Maximal degree in co-relation 19709. Up to 1910 conditions per place. [2024-06-28 00:09:52,405 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 389 selfloop transitions, 123 changer transitions 0/514 dead transitions. [2024-06-28 00:09:52,405 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 609 places, 514 transitions, 8713 flow [2024-06-28 00:09:52,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:09:52,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:09:52,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 143 transitions. [2024-06-28 00:09:52,406 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3844086021505376 [2024-06-28 00:09:52,406 INFO L175 Difference]: Start difference. First operand has 598 places, 498 transitions, 7275 flow. Second operand 12 states and 143 transitions. [2024-06-28 00:09:52,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 609 places, 514 transitions, 8713 flow [2024-06-28 00:09:55,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 603 places, 514 transitions, 8493 flow, removed 38 selfloop flow, removed 6 redundant places. [2024-06-28 00:09:55,143 INFO L231 Difference]: Finished difference. Result has 604 places, 500 transitions, 7381 flow [2024-06-28 00:09:55,143 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=7055, PETRI_DIFFERENCE_MINUEND_PLACES=592, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=376, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7381, PETRI_PLACES=604, PETRI_TRANSITIONS=500} [2024-06-28 00:09:55,143 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 574 predicate places. [2024-06-28 00:09:55,143 INFO L495 AbstractCegarLoop]: Abstraction has has 604 places, 500 transitions, 7381 flow [2024-06-28 00:09:55,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:55,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:55,144 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:09:55,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2024-06-28 00:09:55,144 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)] === [2024-06-28 00:09:55,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:55,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1525622255, now seen corresponding path program 38 times [2024-06-28 00:09:55,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:55,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854810253] [2024-06-28 00:09:55,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:55,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:55,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:57,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:09:57,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:57,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854810253] [2024-06-28 00:09:57,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854810253] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:57,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:57,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:09:57,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995248187] [2024-06-28 00:09:57,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:57,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:09:57,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:57,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:09:57,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:09:57,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:09:57,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 604 places, 500 transitions, 7381 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:57,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:57,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:09:57,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:58,251 INFO L124 PetriNetUnfolderBase]: 1197/2257 cut-off events. [2024-06-28 00:09:58,252 INFO L125 PetriNetUnfolderBase]: For 496345/496345 co-relation queries the response was YES. [2024-06-28 00:09:58,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19699 conditions, 2257 events. 1197/2257 cut-off events. For 496345/496345 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 14474 event pairs, 215 based on Foata normal form. 2/2259 useless extension candidates. Maximal degree in co-relation 19483. Up to 1737 conditions per place. [2024-06-28 00:09:58,296 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 361 selfloop transitions, 148 changer transitions 0/511 dead transitions. [2024-06-28 00:09:58,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 614 places, 511 transitions, 8423 flow [2024-06-28 00:09:58,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:09:58,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:09:58,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-28 00:09:58,297 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39589442815249265 [2024-06-28 00:09:58,297 INFO L175 Difference]: Start difference. First operand has 604 places, 500 transitions, 7381 flow. Second operand 11 states and 135 transitions. [2024-06-28 00:09:58,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 614 places, 511 transitions, 8423 flow [2024-06-28 00:10:00,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 608 places, 511 transitions, 8220 flow, removed 33 selfloop flow, removed 6 redundant places. [2024-06-28 00:10:00,914 INFO L231 Difference]: Finished difference. Result has 609 places, 500 transitions, 7479 flow [2024-06-28 00:10:00,914 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=7178, PETRI_DIFFERENCE_MINUEND_PLACES=598, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=500, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=352, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7479, PETRI_PLACES=609, PETRI_TRANSITIONS=500} [2024-06-28 00:10:00,915 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 579 predicate places. [2024-06-28 00:10:00,915 INFO L495 AbstractCegarLoop]: Abstraction has has 609 places, 500 transitions, 7479 flow [2024-06-28 00:10:00,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:00,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:10:00,915 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:10:00,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2024-06-28 00:10:00,915 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)] === [2024-06-28 00:10:00,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:10:00,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1194877433, now seen corresponding path program 8 times [2024-06-28 00:10:00,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:10:00,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6435772] [2024-06-28 00:10:00,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:10:00,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:10:00,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:10:02,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:10:02,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:10:02,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6435772] [2024-06-28 00:10:02,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6435772] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:10:02,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:10:02,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 00:10:02,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805515677] [2024-06-28 00:10:02,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:10:02,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 00:10:02,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:10:02,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 00:10:02,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-28 00:10:03,171 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:10:03,172 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 609 places, 500 transitions, 7479 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:03,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:10:03,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:10:03,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:10:03,967 INFO L124 PetriNetUnfolderBase]: 1223/2311 cut-off events. [2024-06-28 00:10:03,967 INFO L125 PetriNetUnfolderBase]: For 601280/601280 co-relation queries the response was YES. [2024-06-28 00:10:04,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21500 conditions, 2311 events. 1223/2311 cut-off events. For 601280/601280 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 14857 event pairs, 223 based on Foata normal form. 2/2313 useless extension candidates. Maximal degree in co-relation 21282. Up to 1881 conditions per place. [2024-06-28 00:10:04,010 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 392 selfloop transitions, 124 changer transitions 0/518 dead transitions. [2024-06-28 00:10:04,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 620 places, 518 transitions, 8971 flow [2024-06-28 00:10:04,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:10:04,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:10:04,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 146 transitions. [2024-06-28 00:10:04,011 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3924731182795699 [2024-06-28 00:10:04,011 INFO L175 Difference]: Start difference. First operand has 609 places, 500 transitions, 7479 flow. Second operand 12 states and 146 transitions. [2024-06-28 00:10:04,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 620 places, 518 transitions, 8971 flow [2024-06-28 00:10:07,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 610 places, 518 transitions, 8669 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-28 00:10:07,127 INFO L231 Difference]: Finished difference. Result has 611 places, 501 transitions, 7473 flow [2024-06-28 00:10:07,127 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=7177, PETRI_DIFFERENCE_MINUEND_PLACES=599, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=500, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=376, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7473, PETRI_PLACES=611, PETRI_TRANSITIONS=501} [2024-06-28 00:10:07,127 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 581 predicate places. [2024-06-28 00:10:07,127 INFO L495 AbstractCegarLoop]: Abstraction has has 611 places, 501 transitions, 7473 flow [2024-06-28 00:10:07,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:07,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:10:07,128 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:10:07,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2024-06-28 00:10:07,128 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)] === [2024-06-28 00:10:07,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:10:07,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1187249294, now seen corresponding path program 6 times [2024-06-28 00:10:07,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:10:07,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800386173] [2024-06-28 00:10:07,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:10:07,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:10:07,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:10:08,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:10:08,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:10:08,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800386173] [2024-06-28 00:10:08,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800386173] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:10:08,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:10:08,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:10:08,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853313100] [2024-06-28 00:10:08,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:10:08,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:10:08,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:10:08,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:10:08,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:10:08,895 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:10:08,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 611 places, 501 transitions, 7473 flow. Second operand has 10 states, 10 states have (on average 7.6) internal successors, (76), 10 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) [2024-06-28 00:10:08,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:10:08,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:10:08,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:10:09,664 INFO L124 PetriNetUnfolderBase]: 1226/2316 cut-off events. [2024-06-28 00:10:09,664 INFO L125 PetriNetUnfolderBase]: For 596837/596837 co-relation queries the response was YES. [2024-06-28 00:10:09,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21594 conditions, 2316 events. 1226/2316 cut-off events. For 596837/596837 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 14891 event pairs, 225 based on Foata normal form. 1/2317 useless extension candidates. Maximal degree in co-relation 21375. Up to 1773 conditions per place. [2024-06-28 00:10:09,703 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 347 selfloop transitions, 163 changer transitions 0/512 dead transitions. [2024-06-28 00:10:09,703 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 620 places, 512 transitions, 8581 flow [2024-06-28 00:10:09,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:10:09,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:10:09,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-28 00:10:09,704 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4064516129032258 [2024-06-28 00:10:09,704 INFO L175 Difference]: Start difference. First operand has 611 places, 501 transitions, 7473 flow. Second operand 10 states and 126 transitions. [2024-06-28 00:10:09,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 620 places, 512 transitions, 8581 flow [2024-06-28 00:10:12,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 610 places, 512 transitions, 8295 flow, removed 20 selfloop flow, removed 10 redundant places. [2024-06-28 00:10:13,000 INFO L231 Difference]: Finished difference. Result has 611 places, 503 transitions, 7611 flow [2024-06-28 00:10:13,000 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=7187, PETRI_DIFFERENCE_MINUEND_PLACES=601, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=501, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=161, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7611, PETRI_PLACES=611, PETRI_TRANSITIONS=503} [2024-06-28 00:10:13,001 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 581 predicate places. [2024-06-28 00:10:13,001 INFO L495 AbstractCegarLoop]: Abstraction has has 611 places, 503 transitions, 7611 flow [2024-06-28 00:10:13,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.6) internal successors, (76), 10 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) [2024-06-28 00:10:13,001 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:10:13,001 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:10:13,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2024-06-28 00:10:13,001 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)] === [2024-06-28 00:10:13,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:10:13,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1423869561, now seen corresponding path program 39 times [2024-06-28 00:10:13,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:10:13,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933453996] [2024-06-28 00:10:13,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:10:13,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:10:13,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:10:14,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:10:14,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:10:14,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933453996] [2024-06-28 00:10:14,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933453996] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:10:14,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:10:14,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:10:14,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679913056] [2024-06-28 00:10:14,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:10:14,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:10:14,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:10:14,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:10:14,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:10:14,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:10:14,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 611 places, 503 transitions, 7611 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:14,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:10:14,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:10:14,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:10:15,808 INFO L124 PetriNetUnfolderBase]: 1208/2278 cut-off events. [2024-06-28 00:10:15,808 INFO L125 PetriNetUnfolderBase]: For 518644/518644 co-relation queries the response was YES. [2024-06-28 00:10:15,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20196 conditions, 2278 events. 1208/2278 cut-off events. For 518644/518644 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 14657 event pairs, 207 based on Foata normal form. 2/2280 useless extension candidates. Maximal degree in co-relation 19976. Up to 1731 conditions per place. [2024-06-28 00:10:15,847 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 339 selfloop transitions, 176 changer transitions 0/517 dead transitions. [2024-06-28 00:10:15,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 621 places, 517 transitions, 9026 flow [2024-06-28 00:10:15,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:10:15,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:10:15,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-28 00:10:15,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-28 00:10:15,848 INFO L175 Difference]: Start difference. First operand has 611 places, 503 transitions, 7611 flow. Second operand 11 states and 132 transitions. [2024-06-28 00:10:15,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 621 places, 517 transitions, 9026 flow [2024-06-28 00:10:18,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 612 places, 517 transitions, 8656 flow, removed 29 selfloop flow, removed 9 redundant places. [2024-06-28 00:10:18,686 INFO L231 Difference]: Finished difference. Result has 613 places, 504 transitions, 7638 flow [2024-06-28 00:10:18,686 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=7243, PETRI_DIFFERENCE_MINUEND_PLACES=602, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=175, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7638, PETRI_PLACES=613, PETRI_TRANSITIONS=504} [2024-06-28 00:10:18,686 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 583 predicate places. [2024-06-28 00:10:18,687 INFO L495 AbstractCegarLoop]: Abstraction has has 613 places, 504 transitions, 7638 flow [2024-06-28 00:10:18,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:18,687 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:10:18,687 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:10:18,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2024-06-28 00:10:18,687 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)] === [2024-06-28 00:10:18,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:10:18,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1167161661, now seen corresponding path program 40 times [2024-06-28 00:10:18,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:10:18,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240406477] [2024-06-28 00:10:18,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:10:18,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:10:18,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:10:20,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:10:20,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:10:20,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240406477] [2024-06-28 00:10:20,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240406477] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:10:20,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:10:20,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:10:20,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995947219] [2024-06-28 00:10:20,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:10:20,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:10:20,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:10:20,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:10:20,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:10:21,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:10:21,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 613 places, 504 transitions, 7638 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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) [2024-06-28 00:10:21,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:10:21,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:10:21,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:10:21,854 INFO L124 PetriNetUnfolderBase]: 1205/2273 cut-off events. [2024-06-28 00:10:21,854 INFO L125 PetriNetUnfolderBase]: For 491748/491748 co-relation queries the response was YES. [2024-06-28 00:10:21,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19820 conditions, 2273 events. 1205/2273 cut-off events. For 491748/491748 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 14633 event pairs, 416 based on Foata normal form. 2/2275 useless extension candidates. Maximal degree in co-relation 19600. Up to 2233 conditions per place. [2024-06-28 00:10:21,895 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 493 selfloop transitions, 20 changer transitions 0/515 dead transitions. [2024-06-28 00:10:21,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 624 places, 515 transitions, 8688 flow [2024-06-28 00:10:21,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:10:21,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:10:21,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 110 transitions. [2024-06-28 00:10:21,896 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2956989247311828 [2024-06-28 00:10:21,896 INFO L175 Difference]: Start difference. First operand has 613 places, 504 transitions, 7638 flow. Second operand 12 states and 110 transitions. [2024-06-28 00:10:21,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 624 places, 515 transitions, 8688 flow [2024-06-28 00:10:24,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 611 places, 515 transitions, 7839 flow, removed 34 selfloop flow, removed 13 redundant places. [2024-06-28 00:10:24,702 INFO L231 Difference]: Finished difference. Result has 612 places, 504 transitions, 6833 flow [2024-06-28 00:10:24,702 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6789, PETRI_DIFFERENCE_MINUEND_PLACES=600, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=504, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=484, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6833, PETRI_PLACES=612, PETRI_TRANSITIONS=504} [2024-06-28 00:10:24,703 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 582 predicate places. [2024-06-28 00:10:24,703 INFO L495 AbstractCegarLoop]: Abstraction has has 612 places, 504 transitions, 6833 flow [2024-06-28 00:10:24,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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) [2024-06-28 00:10:24,703 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:10:24,703 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:10:24,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2024-06-28 00:10:24,703 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)] === [2024-06-28 00:10:24,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:10:24,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1680037609, now seen corresponding path program 9 times [2024-06-28 00:10:24,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:10:24,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343773597] [2024-06-28 00:10:24,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:10:24,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:10:24,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:10:26,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:10:26,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:10:26,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343773597] [2024-06-28 00:10:26,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343773597] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:10:26,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:10:26,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:10:26,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581188144] [2024-06-28 00:10:26,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:10:26,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:10:26,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:10:26,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:10:26,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:10:26,541 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:10:26,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 612 places, 504 transitions, 6833 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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) [2024-06-28 00:10:26,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:10:26,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:10:26,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:10:27,375 INFO L124 PetriNetUnfolderBase]: 1261/2393 cut-off events. [2024-06-28 00:10:27,375 INFO L125 PetriNetUnfolderBase]: For 765195/765195 co-relation queries the response was YES. [2024-06-28 00:10:27,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21902 conditions, 2393 events. 1261/2393 cut-off events. For 765195/765195 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 15471 event pairs, 442 based on Foata normal form. 8/2401 useless extension candidates. Maximal degree in co-relation 21685. Up to 2125 conditions per place. [2024-06-28 00:10:27,416 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 490 selfloop transitions, 25 changer transitions 10/527 dead transitions. [2024-06-28 00:10:27,416 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 624 places, 527 transitions, 8439 flow [2024-06-28 00:10:27,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 00:10:27,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 00:10:27,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 131 transitions. [2024-06-28 00:10:27,417 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3250620347394541 [2024-06-28 00:10:27,417 INFO L175 Difference]: Start difference. First operand has 612 places, 504 transitions, 6833 flow. Second operand 13 states and 131 transitions. [2024-06-28 00:10:27,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 624 places, 527 transitions, 8439 flow [2024-06-28 00:10:31,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 611 places, 527 transitions, 8222 flow, removed 6 selfloop flow, removed 13 redundant places. [2024-06-28 00:10:31,076 INFO L231 Difference]: Finished difference. Result has 612 places, 501 transitions, 6653 flow [2024-06-28 00:10:31,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6620, PETRI_DIFFERENCE_MINUEND_PLACES=599, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=504, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=479, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=6653, PETRI_PLACES=612, PETRI_TRANSITIONS=501} [2024-06-28 00:10:31,077 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 582 predicate places. [2024-06-28 00:10:31,077 INFO L495 AbstractCegarLoop]: Abstraction has has 612 places, 501 transitions, 6653 flow [2024-06-28 00:10:31,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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) [2024-06-28 00:10:31,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:10:31,077 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:10:31,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2024-06-28 00:10:31,078 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)] === [2024-06-28 00:10:31,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:10:31,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1167161444, now seen corresponding path program 7 times [2024-06-28 00:10:31,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:10:31,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434566170] [2024-06-28 00:10:31,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:10:31,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:10:31,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:10:33,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:10:33,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:10:33,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434566170] [2024-06-28 00:10:33,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434566170] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:10:33,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:10:33,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:10:33,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805298461] [2024-06-28 00:10:33,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:10:33,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:10:33,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:10:33,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:10:33,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:10:33,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:10:33,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 612 places, 501 transitions, 6653 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 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) [2024-06-28 00:10:33,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:10:33,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:10:33,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:10:34,272 INFO L124 PetriNetUnfolderBase]: 1237/2344 cut-off events. [2024-06-28 00:10:34,272 INFO L125 PetriNetUnfolderBase]: For 659450/659450 co-relation queries the response was YES. [2024-06-28 00:10:34,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21127 conditions, 2344 events. 1237/2344 cut-off events. For 659450/659450 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 15071 event pairs, 444 based on Foata normal form. 1/2345 useless extension candidates. Maximal degree in co-relation 20910. Up to 2298 conditions per place. [2024-06-28 00:10:34,312 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 484 selfloop transitions, 25 changer transitions 0/511 dead transitions. [2024-06-28 00:10:34,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 619 places, 511 transitions, 7693 flow [2024-06-28 00:10:34,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:10:34,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:10:34,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 112 transitions. [2024-06-28 00:10:34,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3010752688172043 [2024-06-28 00:10:34,313 INFO L175 Difference]: Start difference. First operand has 612 places, 501 transitions, 6653 flow. Second operand 12 states and 112 transitions. [2024-06-28 00:10:34,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 619 places, 511 transitions, 7693 flow [2024-06-28 00:10:37,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 607 places, 511 transitions, 7609 flow, removed 21 selfloop flow, removed 12 redundant places. [2024-06-28 00:10:38,005 INFO L231 Difference]: Finished difference. Result has 608 places, 501 transitions, 6630 flow [2024-06-28 00:10:38,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6569, PETRI_DIFFERENCE_MINUEND_PLACES=596, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=501, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=476, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6630, PETRI_PLACES=608, PETRI_TRANSITIONS=501} [2024-06-28 00:10:38,006 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 578 predicate places. [2024-06-28 00:10:38,006 INFO L495 AbstractCegarLoop]: Abstraction has has 608 places, 501 transitions, 6630 flow [2024-06-28 00:10:38,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 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) [2024-06-28 00:10:38,006 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:10:38,006 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:10:38,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2024-06-28 00:10:38,006 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)] === [2024-06-28 00:10:38,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:10:38,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1168074247, now seen corresponding path program 10 times [2024-06-28 00:10:38,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:10:38,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806297983] [2024-06-28 00:10:38,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:10:38,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:10:38,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:10:40,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:10:40,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:10:40,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806297983] [2024-06-28 00:10:40,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806297983] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:10:40,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:10:40,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 00:10:40,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45283651] [2024-06-28 00:10:40,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:10:40,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 00:10:40,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:10:40,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 00:10:40,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-28 00:10:40,418 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:10:40,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 608 places, 501 transitions, 6630 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-28 00:10:40,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:10:40,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:10:40,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:10:41,385 INFO L124 PetriNetUnfolderBase]: 1241/2352 cut-off events. [2024-06-28 00:10:41,386 INFO L125 PetriNetUnfolderBase]: For 655927/655927 co-relation queries the response was YES. [2024-06-28 00:10:41,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21115 conditions, 2352 events. 1241/2352 cut-off events. For 655927/655927 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 15140 event pairs, 442 based on Foata normal form. 2/2354 useless extension candidates. Maximal degree in co-relation 20900. Up to 2209 conditions per place. [2024-06-28 00:10:41,422 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 495 selfloop transitions, 24 changer transitions 0/521 dead transitions. [2024-06-28 00:10:41,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 620 places, 521 transitions, 8218 flow [2024-06-28 00:10:41,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 00:10:41,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 00:10:41,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 125 transitions. [2024-06-28 00:10:41,423 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31017369727047145 [2024-06-28 00:10:41,423 INFO L175 Difference]: Start difference. First operand has 608 places, 501 transitions, 6630 flow. Second operand 13 states and 125 transitions. [2024-06-28 00:10:41,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 620 places, 521 transitions, 8218 flow [2024-06-28 00:10:45,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 610 places, 521 transitions, 8156 flow, removed 10 selfloop flow, removed 10 redundant places. [2024-06-28 00:10:45,120 INFO L231 Difference]: Finished difference. Result has 611 places, 502 transitions, 6666 flow [2024-06-28 00:10:45,120 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6568, PETRI_DIFFERENCE_MINUEND_PLACES=598, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=501, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=477, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=6666, PETRI_PLACES=611, PETRI_TRANSITIONS=502} [2024-06-28 00:10:45,120 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 581 predicate places. [2024-06-28 00:10:45,121 INFO L495 AbstractCegarLoop]: Abstraction has has 611 places, 502 transitions, 6666 flow [2024-06-28 00:10:45,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-28 00:10:45,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:10:45,121 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:10:45,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2024-06-28 00:10:45,121 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)] === [2024-06-28 00:10:45,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:10:45,121 INFO L85 PathProgramCache]: Analyzing trace with hash -17745427, now seen corresponding path program 11 times [2024-06-28 00:10:45,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:10:45,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301583092] [2024-06-28 00:10:45,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:10:45,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:10:45,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:10:47,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:10:47,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:10:47,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301583092] [2024-06-28 00:10:47,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301583092] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:10:47,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:10:47,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:10:47,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723965432] [2024-06-28 00:10:47,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:10:47,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:10:47,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:10:47,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:10:47,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:10:47,404 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:10:47,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 611 places, 502 transitions, 6666 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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) [2024-06-28 00:10:47,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:10:47,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:10:47,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:10:48,218 INFO L124 PetriNetUnfolderBase]: 1238/2347 cut-off events. [2024-06-28 00:10:48,218 INFO L125 PetriNetUnfolderBase]: For 639110/639110 co-relation queries the response was YES. [2024-06-28 00:10:48,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20808 conditions, 2347 events. 1238/2347 cut-off events. For 639110/639110 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 15105 event pairs, 443 based on Foata normal form. 2/2349 useless extension candidates. Maximal degree in co-relation 20592. Up to 2295 conditions per place. [2024-06-28 00:10:48,258 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 489 selfloop transitions, 26 changer transitions 0/517 dead transitions. [2024-06-28 00:10:48,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 622 places, 517 transitions, 7825 flow [2024-06-28 00:10:48,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:10:48,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:10:48,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 115 transitions. [2024-06-28 00:10:48,259 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30913978494623656 [2024-06-28 00:10:48,259 INFO L175 Difference]: Start difference. First operand has 611 places, 502 transitions, 6666 flow. Second operand 12 states and 115 transitions. [2024-06-28 00:10:48,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 622 places, 517 transitions, 7825 flow [2024-06-28 00:10:51,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 611 places, 517 transitions, 7735 flow, removed 21 selfloop flow, removed 11 redundant places. [2024-06-28 00:10:51,867 INFO L231 Difference]: Finished difference. Result has 612 places, 505 transitions, 6737 flow [2024-06-28 00:10:51,868 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6578, PETRI_DIFFERENCE_MINUEND_PLACES=600, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=502, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=478, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6737, PETRI_PLACES=612, PETRI_TRANSITIONS=505} [2024-06-28 00:10:51,868 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 582 predicate places. [2024-06-28 00:10:51,868 INFO L495 AbstractCegarLoop]: Abstraction has has 612 places, 505 transitions, 6737 flow [2024-06-28 00:10:51,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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) [2024-06-28 00:10:51,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:10:51,868 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:10:51,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2024-06-28 00:10:51,869 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)] === [2024-06-28 00:10:51,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:10:51,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1668995719, now seen corresponding path program 12 times [2024-06-28 00:10:51,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:10:51,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142536770] [2024-06-28 00:10:51,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:10:51,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:10:51,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:10:53,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:10:53,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:10:53,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142536770] [2024-06-28 00:10:53,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142536770] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:10:53,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:10:53,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:10:53,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139778141] [2024-06-28 00:10:53,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:10:53,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:10:53,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:10:53,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:10:53,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:10:53,864 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:10:53,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 612 places, 505 transitions, 6737 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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) [2024-06-28 00:10:53,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:10:53,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:10:53,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:10:54,715 INFO L124 PetriNetUnfolderBase]: 1242/2355 cut-off events. [2024-06-28 00:10:54,716 INFO L125 PetriNetUnfolderBase]: For 650363/650363 co-relation queries the response was YES. [2024-06-28 00:10:54,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20899 conditions, 2355 events. 1242/2355 cut-off events. For 650363/650363 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 15199 event pairs, 437 based on Foata normal form. 2/2357 useless extension candidates. Maximal degree in co-relation 20682. Up to 2214 conditions per place. [2024-06-28 00:10:54,756 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 494 selfloop transitions, 29 changer transitions 0/525 dead transitions. [2024-06-28 00:10:54,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 624 places, 525 transitions, 8303 flow [2024-06-28 00:10:54,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 00:10:54,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 00:10:54,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 130 transitions. [2024-06-28 00:10:54,757 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3225806451612903 [2024-06-28 00:10:54,757 INFO L175 Difference]: Start difference. First operand has 612 places, 505 transitions, 6737 flow. Second operand 13 states and 130 transitions. [2024-06-28 00:10:54,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 624 places, 525 transitions, 8303 flow [2024-06-28 00:10:58,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 617 places, 525 transitions, 8191 flow, removed 44 selfloop flow, removed 7 redundant places. [2024-06-28 00:10:58,164 INFO L231 Difference]: Finished difference. Result has 618 places, 506 transitions, 6737 flow [2024-06-28 00:10:58,165 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6625, PETRI_DIFFERENCE_MINUEND_PLACES=605, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=505, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=476, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=6737, PETRI_PLACES=618, PETRI_TRANSITIONS=506} [2024-06-28 00:10:58,165 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 588 predicate places. [2024-06-28 00:10:58,165 INFO L495 AbstractCegarLoop]: Abstraction has has 618 places, 506 transitions, 6737 flow [2024-06-28 00:10:58,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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) [2024-06-28 00:10:58,165 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:10:58,165 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:10:58,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2024-06-28 00:10:58,165 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)] === [2024-06-28 00:10:58,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:10:58,166 INFO L85 PathProgramCache]: Analyzing trace with hash -854384317, now seen corresponding path program 13 times [2024-06-28 00:10:58,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:10:58,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031474949] [2024-06-28 00:10:58,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:10:58,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:10:58,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:10:59,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:10:59,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:10:59,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031474949] [2024-06-28 00:10:59,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031474949] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:10:59,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:10:59,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:10:59,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669487200] [2024-06-28 00:10:59,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:10:59,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:10:59,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:10:59,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:10:59,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:11:00,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:11:00,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 618 places, 506 transitions, 6737 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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) [2024-06-28 00:11:00,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:11:00,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:11:00,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:11:00,910 INFO L124 PetriNetUnfolderBase]: 1239/2350 cut-off events. [2024-06-28 00:11:00,910 INFO L125 PetriNetUnfolderBase]: For 628662/628662 co-relation queries the response was YES. [2024-06-28 00:11:00,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20504 conditions, 2350 events. 1239/2350 cut-off events. For 628662/628662 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 15164 event pairs, 440 based on Foata normal form. 2/2352 useless extension candidates. Maximal degree in co-relation 20285. Up to 2286 conditions per place. [2024-06-28 00:11:00,952 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 488 selfloop transitions, 31 changer transitions 0/521 dead transitions. [2024-06-28 00:11:00,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 630 places, 521 transitions, 7861 flow [2024-06-28 00:11:00,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 00:11:00,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 00:11:00,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 124 transitions. [2024-06-28 00:11:00,953 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3076923076923077 [2024-06-28 00:11:00,953 INFO L175 Difference]: Start difference. First operand has 618 places, 506 transitions, 6737 flow. Second operand 13 states and 124 transitions. [2024-06-28 00:11:00,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 630 places, 521 transitions, 7861 flow [2024-06-28 00:11:04,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 619 places, 521 transitions, 7757 flow, removed 23 selfloop flow, removed 11 redundant places. [2024-06-28 00:11:04,590 INFO L231 Difference]: Finished difference. Result has 620 places, 508 transitions, 6757 flow [2024-06-28 00:11:04,590 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6635, PETRI_DIFFERENCE_MINUEND_PLACES=607, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=506, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=477, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=6757, PETRI_PLACES=620, PETRI_TRANSITIONS=508} [2024-06-28 00:11:04,590 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 590 predicate places. [2024-06-28 00:11:04,590 INFO L495 AbstractCegarLoop]: Abstraction has has 620 places, 508 transitions, 6757 flow [2024-06-28 00:11:04,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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) [2024-06-28 00:11:04,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:11:04,591 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:11:04,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2024-06-28 00:11:04,591 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)] === [2024-06-28 00:11:04,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:11:04,592 INFO L85 PathProgramCache]: Analyzing trace with hash 595147422, now seen corresponding path program 1 times [2024-06-28 00:11:04,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:11:04,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986869522] [2024-06-28 00:11:04,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:11:04,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:11:04,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:11:06,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:11:06,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:11:06,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986869522] [2024-06-28 00:11:06,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986869522] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:11:06,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:11:06,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:11:06,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626328875] [2024-06-28 00:11:06,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:11:06,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:11:06,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:11:06,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:11:06,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:11:06,340 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:11:06,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 620 places, 508 transitions, 6757 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 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) [2024-06-28 00:11:06,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:11:06,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:11:06,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:11:07,128 INFO L124 PetriNetUnfolderBase]: 1247/2370 cut-off events. [2024-06-28 00:11:07,128 INFO L125 PetriNetUnfolderBase]: For 688161/688161 co-relation queries the response was YES. [2024-06-28 00:11:07,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20573 conditions, 2370 events. 1247/2370 cut-off events. For 688161/688161 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 15310 event pairs, 189 based on Foata normal form. 6/2376 useless extension candidates. Maximal degree in co-relation 20353. Up to 2086 conditions per place. [2024-06-28 00:11:07,183 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 470 selfloop transitions, 13 changer transitions 43/528 dead transitions. [2024-06-28 00:11:07,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 629 places, 528 transitions, 7885 flow [2024-06-28 00:11:07,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:11:07,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:11:07,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 103 transitions. [2024-06-28 00:11:07,184 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33225806451612905 [2024-06-28 00:11:07,185 INFO L175 Difference]: Start difference. First operand has 620 places, 508 transitions, 6757 flow. Second operand 10 states and 103 transitions. [2024-06-28 00:11:07,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 629 places, 528 transitions, 7885 flow [2024-06-28 00:11:10,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 611 places, 528 transitions, 7203 flow, removed 48 selfloop flow, removed 18 redundant places. [2024-06-28 00:11:10,727 INFO L231 Difference]: Finished difference. Result has 612 places, 481 transitions, 5846 flow [2024-06-28 00:11:10,727 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6075, PETRI_DIFFERENCE_MINUEND_PLACES=602, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=508, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=495, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5846, PETRI_PLACES=612, PETRI_TRANSITIONS=481} [2024-06-28 00:11:10,728 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 582 predicate places. [2024-06-28 00:11:10,728 INFO L495 AbstractCegarLoop]: Abstraction has has 612 places, 481 transitions, 5846 flow [2024-06-28 00:11:10,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 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) [2024-06-28 00:11:10,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:11:10,728 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:11:10,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2024-06-28 00:11:10,728 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)] === [2024-06-28 00:11:10,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:11:10,729 INFO L85 PathProgramCache]: Analyzing trace with hash -327008440, now seen corresponding path program 2 times [2024-06-28 00:11:10,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:11:10,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184733248] [2024-06-28 00:11:10,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:11:10,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:11:10,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:11:12,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:11:12,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:11:12,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184733248] [2024-06-28 00:11:12,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184733248] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:11:12,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:11:12,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:11:12,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885889366] [2024-06-28 00:11:12,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:11:12,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:11:12,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:11:12,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:11:12,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:11:12,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:11:12,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 612 places, 481 transitions, 5846 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 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) [2024-06-28 00:11:12,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:11:12,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:11:12,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:11:13,472 INFO L124 PetriNetUnfolderBase]: 1186/2253 cut-off events. [2024-06-28 00:11:13,473 INFO L125 PetriNetUnfolderBase]: For 694590/694590 co-relation queries the response was YES. [2024-06-28 00:11:13,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18854 conditions, 2253 events. 1186/2253 cut-off events. For 694590/694590 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 14418 event pairs, 179 based on Foata normal form. 6/2259 useless extension candidates. Maximal degree in co-relation 18642. Up to 2016 conditions per place. [2024-06-28 00:11:13,511 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 450 selfloop transitions, 49 changer transitions 15/516 dead transitions. [2024-06-28 00:11:13,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 600 places, 516 transitions, 7092 flow [2024-06-28 00:11:13,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:11:13,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:11:13,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 123 transitions. [2024-06-28 00:11:13,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33064516129032256 [2024-06-28 00:11:13,512 INFO L175 Difference]: Start difference. First operand has 612 places, 481 transitions, 5846 flow. Second operand 12 states and 123 transitions. [2024-06-28 00:11:13,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 600 places, 516 transitions, 7092 flow [2024-06-28 00:11:16,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 581 places, 516 transitions, 6977 flow, removed 19 selfloop flow, removed 19 redundant places. [2024-06-28 00:11:16,889 INFO L231 Difference]: Finished difference. Result has 587 places, 488 transitions, 5955 flow [2024-06-28 00:11:16,889 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5731, PETRI_DIFFERENCE_MINUEND_PLACES=570, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=481, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=432, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5955, PETRI_PLACES=587, PETRI_TRANSITIONS=488} [2024-06-28 00:11:16,890 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 557 predicate places. [2024-06-28 00:11:16,890 INFO L495 AbstractCegarLoop]: Abstraction has has 587 places, 488 transitions, 5955 flow [2024-06-28 00:11:16,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 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) [2024-06-28 00:11:16,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:11:16,890 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:11:16,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2024-06-28 00:11:16,891 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)] === [2024-06-28 00:11:16,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:11:16,891 INFO L85 PathProgramCache]: Analyzing trace with hash -211544290, now seen corresponding path program 3 times [2024-06-28 00:11:16,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:11:16,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010033237] [2024-06-28 00:11:16,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:11:16,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:11:16,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:11:18,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:11:18,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:11:18,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010033237] [2024-06-28 00:11:18,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010033237] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:11:18,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:11:18,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:11:18,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979578582] [2024-06-28 00:11:18,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:11:18,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:11:18,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:11:18,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:11:18,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:11:18,935 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:11:18,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 587 places, 488 transitions, 5955 flow. Second operand has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:18,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:11:18,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:11:18,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:11:19,690 INFO L124 PetriNetUnfolderBase]: 1168/2219 cut-off events. [2024-06-28 00:11:19,690 INFO L125 PetriNetUnfolderBase]: For 564440/564440 co-relation queries the response was YES. [2024-06-28 00:11:19,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18082 conditions, 2219 events. 1168/2219 cut-off events. For 564440/564440 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 14150 event pairs, 192 based on Foata normal form. 6/2225 useless extension candidates. Maximal degree in co-relation 17876. Up to 1791 conditions per place. [2024-06-28 00:11:19,726 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 363 selfloop transitions, 112 changer transitions 25/502 dead transitions. [2024-06-28 00:11:19,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 592 places, 502 transitions, 7017 flow [2024-06-28 00:11:19,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:11:19,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:11:19,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-28 00:11:19,727 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3774193548387097 [2024-06-28 00:11:19,727 INFO L175 Difference]: Start difference. First operand has 587 places, 488 transitions, 5955 flow. Second operand 10 states and 117 transitions. [2024-06-28 00:11:19,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 592 places, 502 transitions, 7017 flow [2024-06-28 00:11:22,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 580 places, 502 transitions, 6918 flow, removed 11 selfloop flow, removed 12 redundant places. [2024-06-28 00:11:22,527 INFO L231 Difference]: Finished difference. Result has 581 places, 469 transitions, 5859 flow [2024-06-28 00:11:22,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5856, PETRI_DIFFERENCE_MINUEND_PLACES=571, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=488, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=376, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5859, PETRI_PLACES=581, PETRI_TRANSITIONS=469} [2024-06-28 00:11:22,528 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 551 predicate places. [2024-06-28 00:11:22,528 INFO L495 AbstractCegarLoop]: Abstraction has has 581 places, 469 transitions, 5859 flow [2024-06-28 00:11:22,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:22,528 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:11:22,529 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:11:22,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2024-06-28 00:11:22,529 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)] === [2024-06-28 00:11:22,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:11:22,529 INFO L85 PathProgramCache]: Analyzing trace with hash -211717270, now seen corresponding path program 4 times [2024-06-28 00:11:22,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:11:22,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328777983] [2024-06-28 00:11:22,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:11:22,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:11:22,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:11:24,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:11:24,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:11:24,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328777983] [2024-06-28 00:11:24,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328777983] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:11:24,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:11:24,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 00:11:24,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590763247] [2024-06-28 00:11:24,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:11:24,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 00:11:24,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:11:24,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 00:11:24,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-06-28 00:11:24,720 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:11:24,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 581 places, 469 transitions, 5859 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:24,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:11:24,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:11:24,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:11:25,394 INFO L124 PetriNetUnfolderBase]: 1118/2137 cut-off events. [2024-06-28 00:11:25,395 INFO L125 PetriNetUnfolderBase]: For 564218/564218 co-relation queries the response was YES. [2024-06-28 00:11:25,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17782 conditions, 2137 events. 1118/2137 cut-off events. For 564218/564218 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 13634 event pairs, 226 based on Foata normal form. 6/2143 useless extension candidates. Maximal degree in co-relation 17581. Up to 1862 conditions per place. [2024-06-28 00:11:25,433 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 410 selfloop transitions, 48 changer transitions 27/487 dead transitions. [2024-06-28 00:11:25,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 585 places, 487 transitions, 6901 flow [2024-06-28 00:11:25,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:11:25,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:11:25,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 130 transitions. [2024-06-28 00:11:25,437 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34946236559139787 [2024-06-28 00:11:25,437 INFO L175 Difference]: Start difference. First operand has 581 places, 469 transitions, 5859 flow. Second operand 12 states and 130 transitions. [2024-06-28 00:11:25,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 585 places, 487 transitions, 6901 flow [2024-06-28 00:11:28,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 568 places, 487 transitions, 6631 flow, removed 5 selfloop flow, removed 17 redundant places. [2024-06-28 00:11:28,153 INFO L231 Difference]: Finished difference. Result has 569 places, 450 transitions, 5417 flow [2024-06-28 00:11:28,153 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5589, PETRI_DIFFERENCE_MINUEND_PLACES=557, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=469, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=421, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5417, PETRI_PLACES=569, PETRI_TRANSITIONS=450} [2024-06-28 00:11:28,153 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 539 predicate places. [2024-06-28 00:11:28,154 INFO L495 AbstractCegarLoop]: Abstraction has has 569 places, 450 transitions, 5417 flow [2024-06-28 00:11:28,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:28,154 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:11:28,154 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:11:28,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2024-06-28 00:11:28,154 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)] === [2024-06-28 00:11:28,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:11:28,154 INFO L85 PathProgramCache]: Analyzing trace with hash -943316138, now seen corresponding path program 5 times [2024-06-28 00:11:28,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:11:28,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754996365] [2024-06-28 00:11:28,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:11:28,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:11:28,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:11:30,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:11:30,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:11:30,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754996365] [2024-06-28 00:11:30,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754996365] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:11:30,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:11:30,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 00:11:30,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354822862] [2024-06-28 00:11:30,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:11:30,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 00:11:30,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:11:30,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 00:11:30,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-28 00:11:30,356 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:11:30,357 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 569 places, 450 transitions, 5417 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:30,357 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:11:30,357 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:11:30,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:11:30,985 INFO L124 PetriNetUnfolderBase]: 1068/2047 cut-off events. [2024-06-28 00:11:30,985 INFO L125 PetriNetUnfolderBase]: For 533215/533215 co-relation queries the response was YES. [2024-06-28 00:11:31,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16977 conditions, 2047 events. 1068/2047 cut-off events. For 533215/533215 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 12902 event pairs, 197 based on Foata normal form. 6/2053 useless extension candidates. Maximal degree in co-relation 16784. Up to 1736 conditions per place. [2024-06-28 00:11:31,019 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 401 selfloop transitions, 30 changer transitions 36/469 dead transitions. [2024-06-28 00:11:31,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 572 places, 469 transitions, 6425 flow [2024-06-28 00:11:31,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:11:31,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:11:31,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 130 transitions. [2024-06-28 00:11:31,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34946236559139787 [2024-06-28 00:11:31,020 INFO L175 Difference]: Start difference. First operand has 569 places, 450 transitions, 5417 flow. Second operand 12 states and 130 transitions. [2024-06-28 00:11:31,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 572 places, 469 transitions, 6425 flow [2024-06-28 00:11:33,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 545 places, 469 transitions, 6190 flow, removed 6 selfloop flow, removed 27 redundant places. [2024-06-28 00:11:33,527 INFO L231 Difference]: Finished difference. Result has 546 places, 424 transitions, 4897 flow [2024-06-28 00:11:33,527 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5182, PETRI_DIFFERENCE_MINUEND_PLACES=534, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=450, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=420, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4897, PETRI_PLACES=546, PETRI_TRANSITIONS=424} [2024-06-28 00:11:33,527 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 516 predicate places. [2024-06-28 00:11:33,527 INFO L495 AbstractCegarLoop]: Abstraction has has 546 places, 424 transitions, 4897 flow [2024-06-28 00:11:33,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:33,527 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:11:33,527 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:11:33,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2024-06-28 00:11:33,527 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)] === [2024-06-28 00:11:33,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:11:33,529 INFO L85 PathProgramCache]: Analyzing trace with hash 492835660, now seen corresponding path program 6 times [2024-06-28 00:11:33,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:11:33,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721048937] [2024-06-28 00:11:33,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:11:33,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:11:33,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:11:35,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:11:35,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:11:35,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721048937] [2024-06-28 00:11:35,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721048937] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:11:35,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:11:35,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 00:11:35,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005150874] [2024-06-28 00:11:35,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:11:35,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 00:11:35,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:11:35,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 00:11:35,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 00:11:35,589 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:11:35,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 546 places, 424 transitions, 4897 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:35,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:11:35,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:11:35,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:11:36,273 INFO L124 PetriNetUnfolderBase]: 992/1899 cut-off events. [2024-06-28 00:11:36,273 INFO L125 PetriNetUnfolderBase]: For 495416/495416 co-relation queries the response was YES. [2024-06-28 00:11:36,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15923 conditions, 1899 events. 992/1899 cut-off events. For 495416/495416 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 11687 event pairs, 157 based on Foata normal form. 6/1905 useless extension candidates. Maximal degree in co-relation 15740. Up to 1596 conditions per place. [2024-06-28 00:11:36,298 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 388 selfloop transitions, 14 changer transitions 40/444 dead transitions. [2024-06-28 00:11:36,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 544 places, 444 transitions, 5857 flow [2024-06-28 00:11:36,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:11:36,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:11:36,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-28 00:11:36,299 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-28 00:11:36,299 INFO L175 Difference]: Start difference. First operand has 546 places, 424 transitions, 4897 flow. Second operand 11 states and 124 transitions. [2024-06-28 00:11:36,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 544 places, 444 transitions, 5857 flow [2024-06-28 00:11:38,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 517 places, 444 transitions, 5696 flow, removed 5 selfloop flow, removed 27 redundant places. [2024-06-28 00:11:38,150 INFO L231 Difference]: Finished difference. Result has 518 places, 396 transitions, 4485 flow [2024-06-28 00:11:38,151 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4736, PETRI_DIFFERENCE_MINUEND_PLACES=507, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=424, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4485, PETRI_PLACES=518, PETRI_TRANSITIONS=396} [2024-06-28 00:11:38,151 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 488 predicate places. [2024-06-28 00:11:38,151 INFO L495 AbstractCegarLoop]: Abstraction has has 518 places, 396 transitions, 4485 flow [2024-06-28 00:11:38,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:38,151 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:11:38,151 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:11:38,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2024-06-28 00:11:38,151 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)] === [2024-06-28 00:11:38,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:11:38,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1251458432, now seen corresponding path program 1 times [2024-06-28 00:11:38,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:11:38,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35923718] [2024-06-28 00:11:38,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:11:38,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:11:38,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:11:40,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:11:40,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:11:40,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35923718] [2024-06-28 00:11:40,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35923718] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:11:40,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:11:40,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 00:11:40,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391207055] [2024-06-28 00:11:40,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:11:40,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 00:11:40,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:11:40,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 00:11:40,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-28 00:11:40,487 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:11:40,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 518 places, 396 transitions, 4485 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:40,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:11:40,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:11:40,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:11:41,323 INFO L124 PetriNetUnfolderBase]: 915/1751 cut-off events. [2024-06-28 00:11:41,324 INFO L125 PetriNetUnfolderBase]: For 483962/483962 co-relation queries the response was YES. [2024-06-28 00:11:41,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15101 conditions, 1751 events. 915/1751 cut-off events. For 483962/483962 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 10539 event pairs, 150 based on Foata normal form. 8/1759 useless extension candidates. Maximal degree in co-relation 14927. Up to 1577 conditions per place. [2024-06-28 00:11:41,349 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 349 selfloop transitions, 7 changer transitions 57/415 dead transitions. [2024-06-28 00:11:41,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 513 places, 415 transitions, 5425 flow [2024-06-28 00:11:41,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:11:41,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:11:41,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 116 transitions. [2024-06-28 00:11:41,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3118279569892473 [2024-06-28 00:11:41,350 INFO L175 Difference]: Start difference. First operand has 518 places, 396 transitions, 4485 flow. Second operand 12 states and 116 transitions. [2024-06-28 00:11:41,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 513 places, 415 transitions, 5425 flow [2024-06-28 00:11:43,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 485 places, 415 transitions, 5268 flow, removed 11 selfloop flow, removed 28 redundant places. [2024-06-28 00:11:43,168 INFO L231 Difference]: Finished difference. Result has 486 places, 354 transitions, 3812 flow [2024-06-28 00:11:43,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4328, PETRI_DIFFERENCE_MINUEND_PLACES=474, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=389, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3812, PETRI_PLACES=486, PETRI_TRANSITIONS=354} [2024-06-28 00:11:43,168 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 456 predicate places. [2024-06-28 00:11:43,168 INFO L495 AbstractCegarLoop]: Abstraction has has 486 places, 354 transitions, 3812 flow [2024-06-28 00:11:43,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:43,168 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:11:43,168 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:11:43,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2024-06-28 00:11:43,168 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)] === [2024-06-28 00:11:43,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:11:43,169 INFO L85 PathProgramCache]: Analyzing trace with hash -611378474, now seen corresponding path program 2 times [2024-06-28 00:11:43,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:11:43,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490597408] [2024-06-28 00:11:43,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:11:43,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:11:43,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:11:45,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:11:45,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:11:45,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490597408] [2024-06-28 00:11:45,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490597408] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:11:45,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:11:45,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:11:45,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113140269] [2024-06-28 00:11:45,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:11:45,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:11:45,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:11:45,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:11:45,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:11:45,252 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:11:45,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 486 places, 354 transitions, 3812 flow. Second operand has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:45,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:11:45,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:11:45,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:11:45,696 INFO L124 PetriNetUnfolderBase]: 851/1625 cut-off events. [2024-06-28 00:11:45,696 INFO L125 PetriNetUnfolderBase]: For 413396/413396 co-relation queries the response was YES. [2024-06-28 00:11:45,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13802 conditions, 1625 events. 851/1625 cut-off events. For 413396/413396 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 9741 event pairs, 150 based on Foata normal form. 8/1633 useless extension candidates. Maximal degree in co-relation 13639. Up to 1381 conditions per place. [2024-06-28 00:11:45,718 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 289 selfloop transitions, 43 changer transitions 34/368 dead transitions. [2024-06-28 00:11:45,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 464 places, 368 transitions, 4642 flow [2024-06-28 00:11:45,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:11:45,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:11:45,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-28 00:11:45,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38064516129032255 [2024-06-28 00:11:45,719 INFO L175 Difference]: Start difference. First operand has 486 places, 354 transitions, 3812 flow. Second operand 10 states and 118 transitions. [2024-06-28 00:11:45,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 464 places, 368 transitions, 4642 flow [2024-06-28 00:11:47,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 446 places, 368 transitions, 4519 flow, removed 22 selfloop flow, removed 18 redundant places. [2024-06-28 00:11:47,368 INFO L231 Difference]: Finished difference. Result has 447 places, 325 transitions, 3485 flow [2024-06-28 00:11:47,368 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3697, PETRI_DIFFERENCE_MINUEND_PLACES=437, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3485, PETRI_PLACES=447, PETRI_TRANSITIONS=325} [2024-06-28 00:11:47,369 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 417 predicate places. [2024-06-28 00:11:47,369 INFO L495 AbstractCegarLoop]: Abstraction has has 447 places, 325 transitions, 3485 flow [2024-06-28 00:11:47,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:47,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:11:47,369 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:11:47,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2024-06-28 00:11:47,369 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)] === [2024-06-28 00:11:47,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:11:47,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1455243464, now seen corresponding path program 7 times [2024-06-28 00:11:47,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:11:47,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838911704] [2024-06-28 00:11:47,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:11:47,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:11:47,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:11:49,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:11:49,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:11:49,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838911704] [2024-06-28 00:11:49,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838911704] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:11:49,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:11:49,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 00:11:49,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513275130] [2024-06-28 00:11:49,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:11:49,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 00:11:49,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:11:49,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 00:11:49,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-28 00:11:49,883 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:11:49,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 447 places, 325 transitions, 3485 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 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) [2024-06-28 00:11:49,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:11:49,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:11:49,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:11:50,497 INFO L124 PetriNetUnfolderBase]: 798/1538 cut-off events. [2024-06-28 00:11:50,497 INFO L125 PetriNetUnfolderBase]: For 361791/361791 co-relation queries the response was YES. [2024-06-28 00:11:50,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12868 conditions, 1538 events. 798/1538 cut-off events. For 361791/361791 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 9165 event pairs, 138 based on Foata normal form. 6/1544 useless extension candidates. Maximal degree in co-relation 12712. Up to 1314 conditions per place. [2024-06-28 00:11:50,516 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 291 selfloop transitions, 34 changer transitions 15/342 dead transitions. [2024-06-28 00:11:50,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 451 places, 342 transitions, 4231 flow [2024-06-28 00:11:50,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:11:50,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:11:50,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 118 transitions. [2024-06-28 00:11:50,517 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3172043010752688 [2024-06-28 00:11:50,517 INFO L175 Difference]: Start difference. First operand has 447 places, 325 transitions, 3485 flow. Second operand 12 states and 118 transitions. [2024-06-28 00:11:50,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 451 places, 342 transitions, 4231 flow [2024-06-28 00:11:51,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 342 transitions, 4081 flow, removed 6 selfloop flow, removed 26 redundant places. [2024-06-28 00:11:51,891 INFO L231 Difference]: Finished difference. Result has 426 places, 318 transitions, 3348 flow [2024-06-28 00:11:51,891 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3335, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3348, PETRI_PLACES=426, PETRI_TRANSITIONS=318} [2024-06-28 00:11:51,892 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 396 predicate places. [2024-06-28 00:11:51,892 INFO L495 AbstractCegarLoop]: Abstraction has has 426 places, 318 transitions, 3348 flow [2024-06-28 00:11:51,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 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) [2024-06-28 00:11:51,892 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:11:51,892 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:11:51,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2024-06-28 00:11:51,892 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)] === [2024-06-28 00:11:51,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:11:51,892 INFO L85 PathProgramCache]: Analyzing trace with hash 817001804, now seen corresponding path program 8 times [2024-06-28 00:11:51,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:11:51,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630255830] [2024-06-28 00:11:51,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:11:51,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:11:51,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:11:53,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:11:53,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:11:53,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630255830] [2024-06-28 00:11:53,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630255830] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:11:53,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:11:53,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:11:53,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487228207] [2024-06-28 00:11:53,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:11:53,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:11:53,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:11:53,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:11:53,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:11:53,950 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:11:53,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 426 places, 318 transitions, 3348 flow. Second operand has 11 states, 11 states have (on average 7.545454545454546) internal successors, (83), 11 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) [2024-06-28 00:11:53,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:11:53,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:11:53,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:11:54,434 INFO L124 PetriNetUnfolderBase]: 774/1494 cut-off events. [2024-06-28 00:11:54,435 INFO L125 PetriNetUnfolderBase]: For 331327/331327 co-relation queries the response was YES. [2024-06-28 00:11:54,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12412 conditions, 1494 events. 774/1494 cut-off events. For 331327/331327 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 8797 event pairs, 132 based on Foata normal form. 6/1500 useless extension candidates. Maximal degree in co-relation 12265. Up to 1226 conditions per place. [2024-06-28 00:11:54,452 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 262 selfloop transitions, 17 changer transitions 52/333 dead transitions. [2024-06-28 00:11:54,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 333 transitions, 4072 flow [2024-06-28 00:11:54,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:11:54,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:11:54,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-28 00:11:54,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3519061583577713 [2024-06-28 00:11:54,453 INFO L175 Difference]: Start difference. First operand has 426 places, 318 transitions, 3348 flow. Second operand 11 states and 120 transitions. [2024-06-28 00:11:54,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 430 places, 333 transitions, 4072 flow [2024-06-28 00:11:55,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 333 transitions, 3990 flow, removed 3 selfloop flow, removed 13 redundant places. [2024-06-28 00:11:55,658 INFO L231 Difference]: Finished difference. Result has 418 places, 274 transitions, 2826 flow [2024-06-28 00:11:55,658 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3266, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2826, PETRI_PLACES=418, PETRI_TRANSITIONS=274} [2024-06-28 00:11:55,659 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 388 predicate places. [2024-06-28 00:11:55,659 INFO L495 AbstractCegarLoop]: Abstraction has has 418 places, 274 transitions, 2826 flow [2024-06-28 00:11:55,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.545454545454546) internal successors, (83), 11 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) [2024-06-28 00:11:55,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:11:55,659 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:11:55,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2024-06-28 00:11:55,659 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)] === [2024-06-28 00:11:55,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:11:55,659 INFO L85 PathProgramCache]: Analyzing trace with hash -1922046794, now seen corresponding path program 9 times [2024-06-28 00:11:55,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:11:55,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977821448] [2024-06-28 00:11:55,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:11:55,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:11:55,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:11:57,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:11:57,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:11:57,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977821448] [2024-06-28 00:11:57,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977821448] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:11:57,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:11:57,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 00:11:57,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072867567] [2024-06-28 00:11:57,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:11:57,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 00:11:57,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:11:57,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 00:11:57,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-06-28 00:11:58,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:11:58,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 418 places, 274 transitions, 2826 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:58,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:11:58,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:11:58,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:11:58,609 INFO L124 PetriNetUnfolderBase]: 682/1314 cut-off events. [2024-06-28 00:11:58,609 INFO L125 PetriNetUnfolderBase]: For 318927/318927 co-relation queries the response was YES. [2024-06-28 00:11:58,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11486 conditions, 1314 events. 682/1314 cut-off events. For 318927/318927 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 7470 event pairs, 126 based on Foata normal form. 6/1320 useless extension candidates. Maximal degree in co-relation 11341. Up to 1182 conditions per place. [2024-06-28 00:11:58,625 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 254 selfloop transitions, 13 changer transitions 22/291 dead transitions. [2024-06-28 00:11:58,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 291 transitions, 3470 flow [2024-06-28 00:11:58,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:11:58,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:11:58,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 126 transitions. [2024-06-28 00:11:58,627 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-28 00:11:58,627 INFO L175 Difference]: Start difference. First operand has 418 places, 274 transitions, 2826 flow. Second operand 12 states and 126 transitions. [2024-06-28 00:11:58,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 291 transitions, 3470 flow [2024-06-28 00:11:59,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 291 transitions, 3360 flow, removed 11 selfloop flow, removed 30 redundant places. [2024-06-28 00:11:59,790 INFO L231 Difference]: Finished difference. Result has 365 places, 263 transitions, 2658 flow [2024-06-28 00:11:59,790 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2716, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2658, PETRI_PLACES=365, PETRI_TRANSITIONS=263} [2024-06-28 00:11:59,791 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 335 predicate places. [2024-06-28 00:11:59,791 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 263 transitions, 2658 flow [2024-06-28 00:11:59,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:59,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:11:59,791 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:11:59,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2024-06-28 00:11:59,791 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)] === [2024-06-28 00:11:59,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:11:59,792 INFO L85 PathProgramCache]: Analyzing trace with hash 701710634, now seen corresponding path program 10 times [2024-06-28 00:11:59,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:11:59,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618598998] [2024-06-28 00:11:59,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:11:59,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:11:59,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:12:01,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:12:01,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:12:01,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618598998] [2024-06-28 00:12:01,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618598998] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:12:01,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:12:01,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:12:01,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042317771] [2024-06-28 00:12:01,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:12:01,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:12:01,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:12:01,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:12:01,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:12:01,797 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:12:01,797 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 263 transitions, 2658 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 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) [2024-06-28 00:12:01,797 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:12:01,797 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:12:01,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:12:02,228 INFO L124 PetriNetUnfolderBase]: 654/1258 cut-off events. [2024-06-28 00:12:02,228 INFO L125 PetriNetUnfolderBase]: For 268826/268826 co-relation queries the response was YES. [2024-06-28 00:12:02,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10788 conditions, 1258 events. 654/1258 cut-off events. For 268826/268826 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 7083 event pairs, 116 based on Foata normal form. 6/1264 useless extension candidates. Maximal degree in co-relation 10655. Up to 1122 conditions per place. [2024-06-28 00:12:02,242 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 245 selfloop transitions, 8 changer transitions 25/280 dead transitions. [2024-06-28 00:12:02,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 280 transitions, 3280 flow [2024-06-28 00:12:02,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:12:02,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:12:02,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 102 transitions. [2024-06-28 00:12:02,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32903225806451614 [2024-06-28 00:12:02,243 INFO L175 Difference]: Start difference. First operand has 365 places, 263 transitions, 2658 flow. Second operand 10 states and 102 transitions. [2024-06-28 00:12:02,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 280 transitions, 3280 flow [2024-06-28 00:12:03,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 280 transitions, 3233 flow, removed 3 selfloop flow, removed 13 redundant places. [2024-06-28 00:12:03,041 INFO L231 Difference]: Finished difference. Result has 348 places, 250 transitions, 2544 flow [2024-06-28 00:12:03,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2611, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2544, PETRI_PLACES=348, PETRI_TRANSITIONS=250} [2024-06-28 00:12:03,042 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 318 predicate places. [2024-06-28 00:12:03,042 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 250 transitions, 2544 flow [2024-06-28 00:12:03,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 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) [2024-06-28 00:12:03,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:12:03,042 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:12:03,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2024-06-28 00:12:03,042 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)] === [2024-06-28 00:12:03,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:12:03,042 INFO L85 PathProgramCache]: Analyzing trace with hash -521935848, now seen corresponding path program 3 times [2024-06-28 00:12:03,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:12:03,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831525367] [2024-06-28 00:12:03,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:12:03,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:12:03,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:12:04,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:12:04,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:12:04,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831525367] [2024-06-28 00:12:04,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831525367] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:12:04,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:12:04,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:12:04,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446060700] [2024-06-28 00:12:04,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:12:04,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:12:04,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:12:04,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:12:04,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:12:05,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:12:05,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 250 transitions, 2544 flow. Second operand has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:05,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:12:05,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:12:05,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:12:05,418 INFO L124 PetriNetUnfolderBase]: 600/1148 cut-off events. [2024-06-28 00:12:05,418 INFO L125 PetriNetUnfolderBase]: For 230487/230487 co-relation queries the response was YES. [2024-06-28 00:12:05,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9461 conditions, 1148 events. 600/1148 cut-off events. For 230487/230487 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 6303 event pairs, 108 based on Foata normal form. 8/1156 useless extension candidates. Maximal degree in co-relation 9330. Up to 1051 conditions per place. [2024-06-28 00:12:05,431 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 228 selfloop transitions, 2 changer transitions 33/265 dead transitions. [2024-06-28 00:12:05,431 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 265 transitions, 3162 flow [2024-06-28 00:12:05,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:12:05,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:12:05,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 114 transitions. [2024-06-28 00:12:05,432 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3343108504398827 [2024-06-28 00:12:05,432 INFO L175 Difference]: Start difference. First operand has 348 places, 250 transitions, 2544 flow. Second operand 11 states and 114 transitions. [2024-06-28 00:12:05,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 265 transitions, 3162 flow [2024-06-28 00:12:06,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 265 transitions, 3128 flow, removed 5 selfloop flow, removed 13 redundant places. [2024-06-28 00:12:06,155 INFO L231 Difference]: Finished difference. Result has 330 places, 231 transitions, 2365 flow [2024-06-28 00:12:06,155 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2510, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2365, PETRI_PLACES=330, PETRI_TRANSITIONS=231} [2024-06-28 00:12:06,155 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 300 predicate places. [2024-06-28 00:12:06,155 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 231 transitions, 2365 flow [2024-06-28 00:12:06,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:06,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:12:06,156 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:12:06,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2024-06-28 00:12:06,156 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)] === [2024-06-28 00:12:06,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:12:06,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1023116580, now seen corresponding path program 4 times [2024-06-28 00:12:06,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:12:06,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385588856] [2024-06-28 00:12:06,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:12:06,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:12:06,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:12:08,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:12:08,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:12:08,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385588856] [2024-06-28 00:12:08,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385588856] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:12:08,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:12:08,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:12:08,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760643685] [2024-06-28 00:12:08,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:12:08,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:12:08,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:12:08,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:12:08,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:12:08,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:12:08,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 231 transitions, 2365 flow. Second operand has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:08,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:12:08,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:12:08,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:12:08,870 INFO L124 PetriNetUnfolderBase]: 579/1102 cut-off events. [2024-06-28 00:12:08,870 INFO L125 PetriNetUnfolderBase]: For 237540/237540 co-relation queries the response was YES. [2024-06-28 00:12:08,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8892 conditions, 1102 events. 579/1102 cut-off events. For 237540/237540 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 6069 event pairs, 111 based on Foata normal form. 16/1118 useless extension candidates. Maximal degree in co-relation 8765. Up to 791 conditions per place. [2024-06-28 00:12:08,881 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 155 selfloop transitions, 64 changer transitions 22/243 dead transitions. [2024-06-28 00:12:08,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 243 transitions, 2931 flow [2024-06-28 00:12:08,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:12:08,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:12:08,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-28 00:12:08,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3782991202346041 [2024-06-28 00:12:08,882 INFO L175 Difference]: Start difference. First operand has 330 places, 231 transitions, 2365 flow. Second operand 11 states and 129 transitions. [2024-06-28 00:12:08,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 243 transitions, 2931 flow [2024-06-28 00:12:09,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 243 transitions, 2879 flow, removed 22 selfloop flow, removed 15 redundant places. [2024-06-28 00:12:09,465 INFO L231 Difference]: Finished difference. Result has 301 places, 212 transitions, 2239 flow [2024-06-28 00:12:09,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2325, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2239, PETRI_PLACES=301, PETRI_TRANSITIONS=212} [2024-06-28 00:12:09,465 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 271 predicate places. [2024-06-28 00:12:09,466 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 212 transitions, 2239 flow [2024-06-28 00:12:09,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:09,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:12:09,466 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:12:09,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2024-06-28 00:12:09,466 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)] === [2024-06-28 00:12:09,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:12:09,466 INFO L85 PathProgramCache]: Analyzing trace with hash -108280860, now seen corresponding path program 11 times [2024-06-28 00:12:09,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:12:09,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808135937] [2024-06-28 00:12:09,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:12:09,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:12:09,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:12:11,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:12:11,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:12:11,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808135937] [2024-06-28 00:12:11,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808135937] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:12:11,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:12:11,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:12:11,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633029899] [2024-06-28 00:12:11,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:12:11,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:12:11,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:12:11,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:12:11,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:12:11,420 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:12:11,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 212 transitions, 2239 flow. Second operand has 11 states, 11 states have (on average 7.545454545454546) internal successors, (83), 11 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) [2024-06-28 00:12:11,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:12:11,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:12:11,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:12:11,726 INFO L124 PetriNetUnfolderBase]: 533/1032 cut-off events. [2024-06-28 00:12:11,726 INFO L125 PetriNetUnfolderBase]: For 180096/180096 co-relation queries the response was YES. [2024-06-28 00:12:11,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8001 conditions, 1032 events. 533/1032 cut-off events. For 180096/180096 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 5705 event pairs, 101 based on Foata normal form. 12/1044 useless extension candidates. Maximal degree in co-relation 7884. Up to 760 conditions per place. [2024-06-28 00:12:11,736 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 147 selfloop transitions, 51 changer transitions 24/224 dead transitions. [2024-06-28 00:12:11,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 224 transitions, 2731 flow [2024-06-28 00:12:11,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:12:11,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:12:11,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-28 00:12:11,737 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-28 00:12:11,737 INFO L175 Difference]: Start difference. First operand has 301 places, 212 transitions, 2239 flow. Second operand 11 states and 124 transitions. [2024-06-28 00:12:11,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 224 transitions, 2731 flow [2024-06-28 00:12:12,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 224 transitions, 2519 flow, removed 7 selfloop flow, removed 18 redundant places. [2024-06-28 00:12:12,113 INFO L231 Difference]: Finished difference. Result has 293 places, 194 transitions, 2008 flow [2024-06-28 00:12:12,113 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2029, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2008, PETRI_PLACES=293, PETRI_TRANSITIONS=194} [2024-06-28 00:12:12,113 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 263 predicate places. [2024-06-28 00:12:12,113 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 194 transitions, 2008 flow [2024-06-28 00:12:12,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.545454545454546) internal successors, (83), 11 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) [2024-06-28 00:12:12,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:12:12,113 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:12:12,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2024-06-28 00:12:12,113 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)] === [2024-06-28 00:12:12,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:12:12,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1760887372, now seen corresponding path program 5 times [2024-06-28 00:12:12,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:12:12,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169009817] [2024-06-28 00:12:12,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:12:12,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:12:12,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:12:13,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:12:13,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:12:13,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169009817] [2024-06-28 00:12:13,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169009817] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:12:13,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:12:13,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:12:13,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082583327] [2024-06-28 00:12:13,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:12:13,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:12:13,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:12:13,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:12:13,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:12:14,045 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 00:12:14,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 194 transitions, 2008 flow. Second operand has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 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) [2024-06-28 00:12:14,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:12:14,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 00:12:14,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:12:14,329 INFO L124 PetriNetUnfolderBase]: 502/975 cut-off events. [2024-06-28 00:12:14,329 INFO L125 PetriNetUnfolderBase]: For 172677/172677 co-relation queries the response was YES. [2024-06-28 00:12:14,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8021 conditions, 975 events. 502/975 cut-off events. For 172677/172677 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 5272 event pairs, 112 based on Foata normal form. 6/981 useless extension candidates. Maximal degree in co-relation 7909. Up to 706 conditions per place. [2024-06-28 00:12:14,338 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 148 selfloop transitions, 53 changer transitions 7/211 dead transitions. [2024-06-28 00:12:14,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 211 transitions, 2692 flow [2024-06-28 00:12:14,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:12:14,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:12:14,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-28 00:12:14,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41642228739002934 [2024-06-28 00:12:14,339 INFO L175 Difference]: Start difference. First operand has 293 places, 194 transitions, 2008 flow. Second operand 11 states and 142 transitions. [2024-06-28 00:12:14,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 211 transitions, 2692 flow [2024-06-28 00:12:14,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 211 transitions, 2522 flow, removed 18 selfloop flow, removed 21 redundant places. [2024-06-28 00:12:14,718 INFO L231 Difference]: Finished difference. Result has 272 places, 191 transitions, 1944 flow [2024-06-28 00:12:14,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1856, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1944, PETRI_PLACES=272, PETRI_TRANSITIONS=191} [2024-06-28 00:12:14,718 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 242 predicate places. [2024-06-28 00:12:14,718 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 191 transitions, 1944 flow [2024-06-28 00:12:14,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 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) [2024-06-28 00:12:14,718 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:12:14,719 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:12:14,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2024-06-28 00:12:14,719 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)] === [2024-06-28 00:12:14,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:12:14,719 INFO L85 PathProgramCache]: Analyzing trace with hash -1461351392, now seen corresponding path program 6 times [2024-06-28 00:12:14,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:12:14,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069900210] [2024-06-28 00:12:14,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:12:14,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:12:14,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:12:16,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:12:16,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:12:16,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069900210] [2024-06-28 00:12:16,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069900210] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:12:16,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:12:16,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 00:12:16,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358799814] [2024-06-28 00:12:16,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:12:16,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 00:12:16,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:12:16,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 00:12:16,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-28 00:12:16,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:12:16,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 191 transitions, 1944 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:16,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:12:16,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:12:16,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:12:17,283 INFO L124 PetriNetUnfolderBase]: 514/1003 cut-off events. [2024-06-28 00:12:17,283 INFO L125 PetriNetUnfolderBase]: For 164071/164071 co-relation queries the response was YES. [2024-06-28 00:12:17,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8398 conditions, 1003 events. 514/1003 cut-off events. For 164071/164071 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 5496 event pairs, 122 based on Foata normal form. 6/1009 useless extension candidates. Maximal degree in co-relation 8295. Up to 796 conditions per place. [2024-06-28 00:12:17,293 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 155 selfloop transitions, 44 changer transitions 7/208 dead transitions. [2024-06-28 00:12:17,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 208 transitions, 2608 flow [2024-06-28 00:12:17,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:12:17,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:12:17,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-28 00:12:17,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3812316715542522 [2024-06-28 00:12:17,294 INFO L175 Difference]: Start difference. First operand has 272 places, 191 transitions, 1944 flow. Second operand 11 states and 130 transitions. [2024-06-28 00:12:17,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 208 transitions, 2608 flow [2024-06-28 00:12:17,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 208 transitions, 2493 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-28 00:12:17,626 INFO L231 Difference]: Finished difference. Result has 269 places, 188 transitions, 1902 flow [2024-06-28 00:12:17,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1835, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1902, PETRI_PLACES=269, PETRI_TRANSITIONS=188} [2024-06-28 00:12:17,627 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 239 predicate places. [2024-06-28 00:12:17,627 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 188 transitions, 1902 flow [2024-06-28 00:12:17,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:17,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:12:17,627 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:12:17,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220 [2024-06-28 00:12:17,627 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)] === [2024-06-28 00:12:17,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:12:17,628 INFO L85 PathProgramCache]: Analyzing trace with hash -114709950, now seen corresponding path program 12 times [2024-06-28 00:12:17,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:12:17,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007737729] [2024-06-28 00:12:17,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:12:17,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:12:17,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:12:19,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:12:19,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:12:19,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007737729] [2024-06-28 00:12:19,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007737729] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:12:19,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:12:19,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 00:12:19,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846510442] [2024-06-28 00:12:19,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:12:19,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 00:12:19,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:12:19,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 00:12:19,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-28 00:12:19,946 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:12:19,946 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 188 transitions, 1902 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:19,946 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:12:19,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:12:19,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:12:20,302 INFO L124 PetriNetUnfolderBase]: 503/982 cut-off events. [2024-06-28 00:12:20,303 INFO L125 PetriNetUnfolderBase]: For 155306/155306 co-relation queries the response was YES. [2024-06-28 00:12:20,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8202 conditions, 982 events. 503/982 cut-off events. For 155306/155306 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 5340 event pairs, 120 based on Foata normal form. 6/988 useless extension candidates. Maximal degree in co-relation 8101. Up to 782 conditions per place. [2024-06-28 00:12:20,311 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 134 selfloop transitions, 51 changer transitions 15/202 dead transitions. [2024-06-28 00:12:20,311 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 202 transitions, 2352 flow [2024-06-28 00:12:20,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:12:20,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:12:20,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 130 transitions. [2024-06-28 00:12:20,312 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34946236559139787 [2024-06-28 00:12:20,312 INFO L175 Difference]: Start difference. First operand has 269 places, 188 transitions, 1902 flow. Second operand 12 states and 130 transitions. [2024-06-28 00:12:20,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 202 transitions, 2352 flow [2024-06-28 00:12:20,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 202 transitions, 2263 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-28 00:12:20,624 INFO L231 Difference]: Finished difference. Result has 269 places, 182 transitions, 1872 flow [2024-06-28 00:12:20,624 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1813, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1872, PETRI_PLACES=269, PETRI_TRANSITIONS=182} [2024-06-28 00:12:20,624 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 239 predicate places. [2024-06-28 00:12:20,624 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 182 transitions, 1872 flow [2024-06-28 00:12:20,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:20,624 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:12:20,624 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:12:20,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221 [2024-06-28 00:12:20,624 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)] === [2024-06-28 00:12:20,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:12:20,625 INFO L85 PathProgramCache]: Analyzing trace with hash -285412380, now seen corresponding path program 13 times [2024-06-28 00:12:20,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:12:20,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956478301] [2024-06-28 00:12:20,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:12:20,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:12:20,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:12:24,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:12:24,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:12:24,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956478301] [2024-06-28 00:12:24,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956478301] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:12:24,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:12:24,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 00:12:24,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181371167] [2024-06-28 00:12:24,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:12:24,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 00:12:24,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:12:24,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 00:12:24,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 00:12:24,246 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:12:24,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 182 transitions, 1872 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:24,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:12:24,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:12:24,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:12:24,700 INFO L124 PetriNetUnfolderBase]: 502/983 cut-off events. [2024-06-28 00:12:24,700 INFO L125 PetriNetUnfolderBase]: For 151205/151205 co-relation queries the response was YES. [2024-06-28 00:12:24,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8166 conditions, 983 events. 502/983 cut-off events. For 151205/151205 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 5373 event pairs, 120 based on Foata normal form. 6/989 useless extension candidates. Maximal degree in co-relation 8066. Up to 797 conditions per place. [2024-06-28 00:12:24,709 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 148 selfloop transitions, 37 changer transitions 14/201 dead transitions. [2024-06-28 00:12:24,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 201 transitions, 2350 flow [2024-06-28 00:12:24,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:12:24,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:12:24,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2024-06-28 00:12:24,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 00:12:24,710 INFO L175 Difference]: Start difference. First operand has 269 places, 182 transitions, 1872 flow. Second operand 12 states and 132 transitions. [2024-06-28 00:12:24,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 201 transitions, 2350 flow [2024-06-28 00:12:24,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 201 transitions, 2217 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-06-28 00:12:24,984 INFO L231 Difference]: Finished difference. Result has 264 places, 180 transitions, 1818 flow [2024-06-28 00:12:24,984 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1744, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1818, PETRI_PLACES=264, PETRI_TRANSITIONS=180} [2024-06-28 00:12:24,984 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 234 predicate places. [2024-06-28 00:12:24,984 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 180 transitions, 1818 flow [2024-06-28 00:12:24,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:24,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:12:24,984 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:12:24,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable222 [2024-06-28 00:12:24,985 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)] === [2024-06-28 00:12:24,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:12:24,985 INFO L85 PathProgramCache]: Analyzing trace with hash -284817734, now seen corresponding path program 14 times [2024-06-28 00:12:24,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:12:24,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098542494] [2024-06-28 00:12:24,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:12:24,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:12:25,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:12:27,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:12:27,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:12:27,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098542494] [2024-06-28 00:12:27,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098542494] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:12:27,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:12:27,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:12:27,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354231875] [2024-06-28 00:12:27,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:12:27,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:12:27,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:12:27,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:12:27,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:12:27,171 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:12:27,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 180 transitions, 1818 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 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) [2024-06-28 00:12:27,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:12:27,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:12:27,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:12:27,661 INFO L124 PetriNetUnfolderBase]: 486/951 cut-off events. [2024-06-28 00:12:27,661 INFO L125 PetriNetUnfolderBase]: For 138991/138991 co-relation queries the response was YES. [2024-06-28 00:12:27,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7897 conditions, 951 events. 486/951 cut-off events. For 138991/138991 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 5159 event pairs, 116 based on Foata normal form. 6/957 useless extension candidates. Maximal degree in co-relation 7796. Up to 728 conditions per place. [2024-06-28 00:12:27,670 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 137 selfloop transitions, 42 changer transitions 13/194 dead transitions. [2024-06-28 00:12:27,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 194 transitions, 2252 flow [2024-06-28 00:12:27,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:12:27,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:12:27,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 113 transitions. [2024-06-28 00:12:27,671 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3313782991202346 [2024-06-28 00:12:27,671 INFO L175 Difference]: Start difference. First operand has 264 places, 180 transitions, 1818 flow. Second operand 11 states and 113 transitions. [2024-06-28 00:12:27,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 194 transitions, 2252 flow [2024-06-28 00:12:27,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 194 transitions, 2138 flow, removed 5 selfloop flow, removed 14 redundant places. [2024-06-28 00:12:27,953 INFO L231 Difference]: Finished difference. Result has 257 places, 175 transitions, 1758 flow [2024-06-28 00:12:27,953 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1704, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1758, PETRI_PLACES=257, PETRI_TRANSITIONS=175} [2024-06-28 00:12:27,954 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 227 predicate places. [2024-06-28 00:12:27,954 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 175 transitions, 1758 flow [2024-06-28 00:12:27,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 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) [2024-06-28 00:12:27,954 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:12:27,954 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:12:27,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable223 [2024-06-28 00:12:27,955 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)] === [2024-06-28 00:12:27,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:12:27,955 INFO L85 PathProgramCache]: Analyzing trace with hash 555928898, now seen corresponding path program 15 times [2024-06-28 00:12:27,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:12:27,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402065092] [2024-06-28 00:12:27,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:12:27,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:12:27,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:12:29,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:12:29,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:12:29,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402065092] [2024-06-28 00:12:29,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402065092] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:12:29,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:12:29,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:12:29,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864624293] [2024-06-28 00:12:29,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:12:29,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:12:29,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:12:29,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:12:29,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:12:30,156 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:12:30,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 175 transitions, 1758 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 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) [2024-06-28 00:12:30,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:12:30,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:12:30,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:12:30,553 INFO L124 PetriNetUnfolderBase]: 456/889 cut-off events. [2024-06-28 00:12:30,553 INFO L125 PetriNetUnfolderBase]: For 124924/124924 co-relation queries the response was YES. [2024-06-28 00:12:30,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7227 conditions, 889 events. 456/889 cut-off events. For 124924/124924 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4715 event pairs, 99 based on Foata normal form. 6/895 useless extension candidates. Maximal degree in co-relation 7130. Up to 687 conditions per place. [2024-06-28 00:12:30,560 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 126 selfloop transitions, 39 changer transitions 21/188 dead transitions. [2024-06-28 00:12:30,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 188 transitions, 2178 flow [2024-06-28 00:12:30,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:12:30,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:12:30,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 111 transitions. [2024-06-28 00:12:30,561 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3255131964809384 [2024-06-28 00:12:30,561 INFO L175 Difference]: Start difference. First operand has 257 places, 175 transitions, 1758 flow. Second operand 11 states and 111 transitions. [2024-06-28 00:12:30,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 188 transitions, 2178 flow [2024-06-28 00:12:30,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 188 transitions, 2053 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-28 00:12:30,761 INFO L231 Difference]: Finished difference. Result has 249 places, 162 transitions, 1611 flow [2024-06-28 00:12:30,761 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1633, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1611, PETRI_PLACES=249, PETRI_TRANSITIONS=162} [2024-06-28 00:12:30,761 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 219 predicate places. [2024-06-28 00:12:30,761 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 162 transitions, 1611 flow [2024-06-28 00:12:30,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 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) [2024-06-28 00:12:30,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:12:30,761 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:12:30,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable224 [2024-06-28 00:12:30,762 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)] === [2024-06-28 00:12:30,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:12:30,762 INFO L85 PathProgramCache]: Analyzing trace with hash -395640254, now seen corresponding path program 16 times [2024-06-28 00:12:30,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:12:30,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501804008] [2024-06-28 00:12:30,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:12:30,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:12:30,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:12:33,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:12:33,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:12:33,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501804008] [2024-06-28 00:12:33,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501804008] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:12:33,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:12:33,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 00:12:33,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874143754] [2024-06-28 00:12:33,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:12:33,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 00:12:33,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:12:33,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 00:12:33,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-06-28 00:12:33,549 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:12:33,549 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 162 transitions, 1611 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:33,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:12:33,550 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:12:33,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:12:33,841 INFO L124 PetriNetUnfolderBase]: 413/800 cut-off events. [2024-06-28 00:12:33,841 INFO L125 PetriNetUnfolderBase]: For 104438/104438 co-relation queries the response was YES. [2024-06-28 00:12:33,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6358 conditions, 800 events. 413/800 cut-off events. For 104438/104438 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 4044 event pairs, 73 based on Foata normal form. 6/806 useless extension candidates. Maximal degree in co-relation 6264. Up to 538 conditions per place. [2024-06-28 00:12:33,847 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 99 selfloop transitions, 61 changer transitions 17/179 dead transitions. [2024-06-28 00:12:33,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 179 transitions, 2021 flow [2024-06-28 00:12:33,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 00:12:33,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 00:12:33,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 136 transitions. [2024-06-28 00:12:33,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.337468982630273 [2024-06-28 00:12:33,848 INFO L175 Difference]: Start difference. First operand has 249 places, 162 transitions, 1611 flow. Second operand 13 states and 136 transitions. [2024-06-28 00:12:33,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 179 transitions, 2021 flow [2024-06-28 00:12:34,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 179 transitions, 1888 flow, removed 7 selfloop flow, removed 20 redundant places. [2024-06-28 00:12:34,018 INFO L231 Difference]: Finished difference. Result has 229 places, 155 transitions, 1567 flow [2024-06-28 00:12:34,018 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1478, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1567, PETRI_PLACES=229, PETRI_TRANSITIONS=155} [2024-06-28 00:12:34,018 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 199 predicate places. [2024-06-28 00:12:34,018 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 155 transitions, 1567 flow [2024-06-28 00:12:34,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:34,018 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:12:34,018 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:12:34,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225 [2024-06-28 00:12:34,019 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)] === [2024-06-28 00:12:34,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:12:34,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1619286736, now seen corresponding path program 7 times [2024-06-28 00:12:34,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:12:34,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023835981] [2024-06-28 00:12:34,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:12:34,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:12:34,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:12:35,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:12:35,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:12:35,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023835981] [2024-06-28 00:12:35,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023835981] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:12:35,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:12:35,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:12:35,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508340406] [2024-06-28 00:12:35,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:12:35,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:12:35,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:12:35,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:12:35,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:12:35,953 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 00:12:35,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 155 transitions, 1567 flow. Second operand has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 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) [2024-06-28 00:12:35,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:12:35,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 00:12:35,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:12:36,155 INFO L124 PetriNetUnfolderBase]: 375/722 cut-off events. [2024-06-28 00:12:36,155 INFO L125 PetriNetUnfolderBase]: For 76075/76075 co-relation queries the response was YES. [2024-06-28 00:12:36,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5384 conditions, 722 events. 375/722 cut-off events. For 76075/76075 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 3566 event pairs, 74 based on Foata normal form. 8/730 useless extension candidates. Maximal degree in co-relation 5297. Up to 551 conditions per place. [2024-06-28 00:12:36,161 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 111 selfloop transitions, 33 changer transitions 21/168 dead transitions. [2024-06-28 00:12:36,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 168 transitions, 1967 flow [2024-06-28 00:12:36,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:12:36,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:12:36,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-28 00:12:36,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375366568914956 [2024-06-28 00:12:36,162 INFO L175 Difference]: Start difference. First operand has 229 places, 155 transitions, 1567 flow. Second operand 11 states and 128 transitions. [2024-06-28 00:12:36,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 168 transitions, 1967 flow [2024-06-28 00:12:36,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 168 transitions, 1782 flow, removed 4 selfloop flow, removed 21 redundant places. [2024-06-28 00:12:36,299 INFO L231 Difference]: Finished difference. Result has 212 places, 144 transitions, 1378 flow [2024-06-28 00:12:36,299 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1382, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1378, PETRI_PLACES=212, PETRI_TRANSITIONS=144} [2024-06-28 00:12:36,300 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 182 predicate places. [2024-06-28 00:12:36,300 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 144 transitions, 1378 flow [2024-06-28 00:12:36,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 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) [2024-06-28 00:12:36,300 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:12:36,300 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:12:36,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable226 [2024-06-28 00:12:36,300 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)] === [2024-06-28 00:12:36,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:12:36,301 INFO L85 PathProgramCache]: Analyzing trace with hash -275027432, now seen corresponding path program 17 times [2024-06-28 00:12:36,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:12:36,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473135846] [2024-06-28 00:12:36,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:12:36,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:12:36,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:12:38,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:12:38,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:12:38,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473135846] [2024-06-28 00:12:38,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473135846] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:12:38,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:12:38,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:12:38,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354943201] [2024-06-28 00:12:38,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:12:38,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:12:38,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:12:38,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:12:38,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:12:38,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:12:38,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 144 transitions, 1378 flow. Second operand has 11 states, 11 states have (on average 7.545454545454546) internal successors, (83), 11 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) [2024-06-28 00:12:38,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:12:38,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:12:38,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:12:38,539 INFO L124 PetriNetUnfolderBase]: 354/679 cut-off events. [2024-06-28 00:12:38,539 INFO L125 PetriNetUnfolderBase]: For 65181/65181 co-relation queries the response was YES. [2024-06-28 00:12:38,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4989 conditions, 679 events. 354/679 cut-off events. For 65181/65181 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 3309 event pairs, 66 based on Foata normal form. 6/685 useless extension candidates. Maximal degree in co-relation 4905. Up to 531 conditions per place. [2024-06-28 00:12:38,543 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 106 selfloop transitions, 38 changer transitions 10/156 dead transitions. [2024-06-28 00:12:38,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 156 transitions, 1732 flow [2024-06-28 00:12:38,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:12:38,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:12:38,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-28 00:12:38,544 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36129032258064514 [2024-06-28 00:12:38,544 INFO L175 Difference]: Start difference. First operand has 212 places, 144 transitions, 1378 flow. Second operand 10 states and 112 transitions. [2024-06-28 00:12:38,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 156 transitions, 1732 flow [2024-06-28 00:12:38,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 156 transitions, 1617 flow, removed 15 selfloop flow, removed 15 redundant places. [2024-06-28 00:12:38,643 INFO L231 Difference]: Finished difference. Result has 191 places, 140 transitions, 1321 flow [2024-06-28 00:12:38,643 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1269, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1321, PETRI_PLACES=191, PETRI_TRANSITIONS=140} [2024-06-28 00:12:38,644 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 161 predicate places. [2024-06-28 00:12:38,644 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 140 transitions, 1321 flow [2024-06-28 00:12:38,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.545454545454546) internal successors, (83), 11 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) [2024-06-28 00:12:38,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:12:38,644 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:12:38,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable227 [2024-06-28 00:12:38,644 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)] === [2024-06-28 00:12:38,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:12:38,644 INFO L85 PathProgramCache]: Analyzing trace with hash -268764812, now seen corresponding path program 18 times [2024-06-28 00:12:38,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:12:38,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799841878] [2024-06-28 00:12:38,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:12:38,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:12:38,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:12:40,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:12:40,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:12:40,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799841878] [2024-06-28 00:12:40,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799841878] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:12:40,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:12:40,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:12:40,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362365004] [2024-06-28 00:12:40,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:12:40,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:12:40,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:12:40,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:12:40,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:12:40,786 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:12:40,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 140 transitions, 1321 flow. Second operand has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:40,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:12:40,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:12:40,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:12:41,063 INFO L124 PetriNetUnfolderBase]: 336/649 cut-off events. [2024-06-28 00:12:41,063 INFO L125 PetriNetUnfolderBase]: For 57712/57712 co-relation queries the response was YES. [2024-06-28 00:12:41,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4145 conditions, 649 events. 336/649 cut-off events. For 57712/57712 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3161 event pairs, 64 based on Foata normal form. 16/665 useless extension candidates. Maximal degree in co-relation 4067. Up to 454 conditions per place. [2024-06-28 00:12:41,067 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 94 selfloop transitions, 32 changer transitions 24/152 dead transitions. [2024-06-28 00:12:41,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 152 transitions, 1677 flow [2024-06-28 00:12:41,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:12:41,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:12:41,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-28 00:12:41,068 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3519061583577713 [2024-06-28 00:12:41,068 INFO L175 Difference]: Start difference. First operand has 191 places, 140 transitions, 1321 flow. Second operand 11 states and 120 transitions. [2024-06-28 00:12:41,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 152 transitions, 1677 flow [2024-06-28 00:12:41,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 152 transitions, 1595 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-28 00:12:41,142 INFO L231 Difference]: Finished difference. Result has 188 places, 123 transitions, 1162 flow [2024-06-28 00:12:41,142 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1239, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1162, PETRI_PLACES=188, PETRI_TRANSITIONS=123} [2024-06-28 00:12:41,143 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 158 predicate places. [2024-06-28 00:12:41,143 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 123 transitions, 1162 flow [2024-06-28 00:12:41,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:41,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:12:41,143 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:12:41,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable228 [2024-06-28 00:12:41,143 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)] === [2024-06-28 00:12:41,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:12:41,143 INFO L85 PathProgramCache]: Analyzing trace with hash -275200412, now seen corresponding path program 19 times [2024-06-28 00:12:41,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:12:41,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054312085] [2024-06-28 00:12:41,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:12:41,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:12:41,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:12:43,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:12:43,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:12:43,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054312085] [2024-06-28 00:12:43,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054312085] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:12:43,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:12:43,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 00:12:43,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609473753] [2024-06-28 00:12:43,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:12:43,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 00:12:43,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:12:43,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 00:12:43,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-28 00:12:43,411 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:12:43,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 123 transitions, 1162 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:43,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:12:43,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:12:43,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:12:43,705 INFO L124 PetriNetUnfolderBase]: 292/565 cut-off events. [2024-06-28 00:12:43,705 INFO L125 PetriNetUnfolderBase]: For 39982/39982 co-relation queries the response was YES. [2024-06-28 00:12:43,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3698 conditions, 565 events. 292/565 cut-off events. For 39982/39982 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 2616 event pairs, 48 based on Foata normal form. 6/571 useless extension candidates. Maximal degree in co-relation 3622. Up to 430 conditions per place. [2024-06-28 00:12:43,709 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 91 selfloop transitions, 32 changer transitions 12/137 dead transitions. [2024-06-28 00:12:43,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 137 transitions, 1476 flow [2024-06-28 00:12:43,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:12:43,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:12:43,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 124 transitions. [2024-06-28 00:12:43,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-28 00:12:43,710 INFO L175 Difference]: Start difference. First operand has 188 places, 123 transitions, 1162 flow. Second operand 12 states and 124 transitions. [2024-06-28 00:12:43,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 137 transitions, 1476 flow [2024-06-28 00:12:43,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 137 transitions, 1362 flow, removed 9 selfloop flow, removed 15 redundant places. [2024-06-28 00:12:43,771 INFO L231 Difference]: Finished difference. Result has 172 places, 117 transitions, 1080 flow [2024-06-28 00:12:43,771 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1050, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1080, PETRI_PLACES=172, PETRI_TRANSITIONS=117} [2024-06-28 00:12:43,771 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 142 predicate places. [2024-06-28 00:12:43,771 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 117 transitions, 1080 flow [2024-06-28 00:12:43,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:43,772 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:12:43,772 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:12:43,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229 [2024-06-28 00:12:43,772 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)] === [2024-06-28 00:12:43,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:12:43,772 INFO L85 PathProgramCache]: Analyzing trace with hash 734323644, now seen corresponding path program 8 times [2024-06-28 00:12:43,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:12:43,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15993978] [2024-06-28 00:12:43,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:12:43,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:12:43,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:12:46,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:12:46,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:12:46,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15993978] [2024-06-28 00:12:46,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15993978] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:12:46,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:12:46,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 00:12:46,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361422353] [2024-06-28 00:12:46,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:12:46,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 00:12:46,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:12:46,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 00:12:46,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2024-06-28 00:12:46,477 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:12:46,477 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 117 transitions, 1080 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:46,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:12:46,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:12:46,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:12:46,808 INFO L124 PetriNetUnfolderBase]: 287/554 cut-off events. [2024-06-28 00:12:46,809 INFO L125 PetriNetUnfolderBase]: For 35221/35221 co-relation queries the response was YES. [2024-06-28 00:12:46,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3491 conditions, 554 events. 287/554 cut-off events. For 35221/35221 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 2541 event pairs, 58 based on Foata normal form. 8/562 useless extension candidates. Maximal degree in co-relation 3420. Up to 410 conditions per place. [2024-06-28 00:12:46,811 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 80 selfloop transitions, 32 changer transitions 18/132 dead transitions. [2024-06-28 00:12:46,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 132 transitions, 1402 flow [2024-06-28 00:12:46,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:12:46,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:12:46,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 128 transitions. [2024-06-28 00:12:46,812 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34408602150537637 [2024-06-28 00:12:46,812 INFO L175 Difference]: Start difference. First operand has 172 places, 117 transitions, 1080 flow. Second operand 12 states and 128 transitions. [2024-06-28 00:12:46,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 132 transitions, 1402 flow [2024-06-28 00:12:46,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 132 transitions, 1328 flow, removed 5 selfloop flow, removed 14 redundant places. [2024-06-28 00:12:46,864 INFO L231 Difference]: Finished difference. Result has 163 places, 107 transitions, 950 flow [2024-06-28 00:12:46,864 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1006, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=950, PETRI_PLACES=163, PETRI_TRANSITIONS=107} [2024-06-28 00:12:46,864 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 133 predicate places. [2024-06-28 00:12:46,864 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 107 transitions, 950 flow [2024-06-28 00:12:46,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:46,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:12:46,864 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:12:46,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230 [2024-06-28 00:12:46,864 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)] === [2024-06-28 00:12:46,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:12:46,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1661247124, now seen corresponding path program 20 times [2024-06-28 00:12:46,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:12:46,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830417394] [2024-06-28 00:12:46,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:12:46,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:12:46,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:12:49,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:12:49,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:12:49,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830417394] [2024-06-28 00:12:49,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830417394] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:12:49,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:12:49,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 00:12:49,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433415259] [2024-06-28 00:12:49,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:12:49,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 00:12:49,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:12:49,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 00:12:49,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2024-06-28 00:12:49,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:12:49,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 107 transitions, 950 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:49,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:12:49,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:12:49,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:12:50,002 INFO L124 PetriNetUnfolderBase]: 261/512 cut-off events. [2024-06-28 00:12:50,002 INFO L125 PetriNetUnfolderBase]: For 27466/27466 co-relation queries the response was YES. [2024-06-28 00:12:50,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3157 conditions, 512 events. 261/512 cut-off events. For 27466/27466 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2332 event pairs, 50 based on Foata normal form. 6/518 useless extension candidates. Maximal degree in co-relation 3090. Up to 398 conditions per place. [2024-06-28 00:12:50,006 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 77 selfloop transitions, 28 changer transitions 13/120 dead transitions. [2024-06-28 00:12:50,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 120 transitions, 1226 flow [2024-06-28 00:12:50,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:12:50,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:12:50,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 124 transitions. [2024-06-28 00:12:50,007 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-28 00:12:50,007 INFO L175 Difference]: Start difference. First operand has 163 places, 107 transitions, 950 flow. Second operand 12 states and 124 transitions. [2024-06-28 00:12:50,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 120 transitions, 1226 flow [2024-06-28 00:12:50,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 120 transitions, 1133 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-06-28 00:12:50,059 INFO L231 Difference]: Finished difference. Result has 161 places, 101 transitions, 873 flow [2024-06-28 00:12:50,059 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=857, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=873, PETRI_PLACES=161, PETRI_TRANSITIONS=101} [2024-06-28 00:12:50,060 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 131 predicate places. [2024-06-28 00:12:50,060 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 101 transitions, 873 flow [2024-06-28 00:12:50,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:50,060 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:12:50,060 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:12:50,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231 [2024-06-28 00:12:50,060 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)] === [2024-06-28 00:12:50,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:12:50,060 INFO L85 PathProgramCache]: Analyzing trace with hash -2044358914, now seen corresponding path program 9 times [2024-06-28 00:12:50,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:12:50,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935706588] [2024-06-28 00:12:50,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:12:50,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:12:50,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:12:52,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:12:52,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:12:52,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935706588] [2024-06-28 00:12:52,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935706588] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:12:52,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:12:52,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 00:12:52,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693876782] [2024-06-28 00:12:52,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:12:52,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 00:12:52,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:12:52,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 00:12:52,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-28 00:12:52,236 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:12:52,236 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 101 transitions, 873 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:52,236 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:12:52,236 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:12:52,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:12:52,596 INFO L124 PetriNetUnfolderBase]: 250/491 cut-off events. [2024-06-28 00:12:52,597 INFO L125 PetriNetUnfolderBase]: For 27501/27501 co-relation queries the response was YES. [2024-06-28 00:12:52,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3051 conditions, 491 events. 250/491 cut-off events. For 27501/27501 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2203 event pairs, 46 based on Foata normal form. 6/497 useless extension candidates. Maximal degree in co-relation 2984. Up to 334 conditions per place. [2024-06-28 00:12:52,599 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 84 selfloop transitions, 26 changer transitions 7/119 dead transitions. [2024-06-28 00:12:52,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 119 transitions, 1271 flow [2024-06-28 00:12:52,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 00:12:52,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 00:12:52,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 124 transitions. [2024-06-28 00:12:52,600 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3076923076923077 [2024-06-28 00:12:52,600 INFO L175 Difference]: Start difference. First operand has 161 places, 101 transitions, 873 flow. Second operand 13 states and 124 transitions. [2024-06-28 00:12:52,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 119 transitions, 1271 flow [2024-06-28 00:12:52,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 119 transitions, 1203 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-28 00:12:52,643 INFO L231 Difference]: Finished difference. Result has 157 places, 98 transitions, 845 flow [2024-06-28 00:12:52,643 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=811, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=845, PETRI_PLACES=157, PETRI_TRANSITIONS=98} [2024-06-28 00:12:52,643 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 127 predicate places. [2024-06-28 00:12:52,644 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 98 transitions, 845 flow [2024-06-28 00:12:52,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:52,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:12:52,644 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:12:52,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable232 [2024-06-28 00:12:52,644 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)] === [2024-06-28 00:12:52,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:12:52,645 INFO L85 PathProgramCache]: Analyzing trace with hash -2044655584, now seen corresponding path program 10 times [2024-06-28 00:12:52,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:12:52,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355229338] [2024-06-28 00:12:52,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:12:52,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:12:52,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:12:54,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:12:54,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:12:54,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355229338] [2024-06-28 00:12:54,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355229338] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:12:54,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:12:54,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 00:12:54,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815038741] [2024-06-28 00:12:54,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:12:54,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 00:12:54,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:12:54,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 00:12:54,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 00:12:55,000 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:12:55,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 98 transitions, 845 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:55,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:12:55,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:12:55,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:12:55,403 INFO L124 PetriNetUnfolderBase]: 222/435 cut-off events. [2024-06-28 00:12:55,403 INFO L125 PetriNetUnfolderBase]: For 20130/20130 co-relation queries the response was YES. [2024-06-28 00:12:55,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2480 conditions, 435 events. 222/435 cut-off events. For 20130/20130 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 1864 event pairs, 40 based on Foata normal form. 8/443 useless extension candidates. Maximal degree in co-relation 2415. Up to 340 conditions per place. [2024-06-28 00:12:55,405 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 77 selfloop transitions, 18 changer transitions 15/112 dead transitions. [2024-06-28 00:12:55,405 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 112 transitions, 1121 flow [2024-06-28 00:12:55,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-28 00:12:55,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-28 00:12:55,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 122 transitions. [2024-06-28 00:12:55,406 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28110599078341014 [2024-06-28 00:12:55,406 INFO L175 Difference]: Start difference. First operand has 157 places, 98 transitions, 845 flow. Second operand 14 states and 122 transitions. [2024-06-28 00:12:55,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 112 transitions, 1121 flow [2024-06-28 00:12:55,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 112 transitions, 1066 flow, removed 3 selfloop flow, removed 13 redundant places. [2024-06-28 00:12:55,435 INFO L231 Difference]: Finished difference. Result has 155 places, 90 transitions, 771 flow [2024-06-28 00:12:55,435 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=790, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=771, PETRI_PLACES=155, PETRI_TRANSITIONS=90} [2024-06-28 00:12:55,436 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 125 predicate places. [2024-06-28 00:12:55,436 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 90 transitions, 771 flow [2024-06-28 00:12:55,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:55,436 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:12:55,436 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:12:55,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable233 [2024-06-28 00:12:55,436 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)] === [2024-06-28 00:12:55,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:12:55,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1964974444, now seen corresponding path program 21 times [2024-06-28 00:12:55,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:12:55,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46696407] [2024-06-28 00:12:55,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:12:55,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:12:55,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:12:57,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:12:57,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:12:57,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46696407] [2024-06-28 00:12:57,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46696407] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:12:57,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:12:57,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 00:12:57,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854084808] [2024-06-28 00:12:57,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:12:57,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 00:12:57,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:12:57,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 00:12:57,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-28 00:12:57,476 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:12:57,477 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 90 transitions, 771 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:57,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:12:57,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:12:57,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:12:57,806 INFO L124 PetriNetUnfolderBase]: 204/401 cut-off events. [2024-06-28 00:12:57,806 INFO L125 PetriNetUnfolderBase]: For 16487/16487 co-relation queries the response was YES. [2024-06-28 00:12:57,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2288 conditions, 401 events. 204/401 cut-off events. For 16487/16487 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 1666 event pairs, 34 based on Foata normal form. 6/407 useless extension candidates. Maximal degree in co-relation 2225. Up to 342 conditions per place. [2024-06-28 00:12:57,808 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 80 selfloop transitions, 12 changer transitions 8/102 dead transitions. [2024-06-28 00:12:57,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 102 transitions, 1009 flow [2024-06-28 00:12:57,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:12:57,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:12:57,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 101 transitions. [2024-06-28 00:12:57,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.271505376344086 [2024-06-28 00:12:57,809 INFO L175 Difference]: Start difference. First operand has 155 places, 90 transitions, 771 flow. Second operand 12 states and 101 transitions. [2024-06-28 00:12:57,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 102 transitions, 1009 flow [2024-06-28 00:12:57,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 102 transitions, 955 flow, removed 9 selfloop flow, removed 15 redundant places. [2024-06-28 00:12:57,836 INFO L231 Difference]: Finished difference. Result has 142 places, 88 transitions, 735 flow [2024-06-28 00:12:57,836 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=721, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=735, PETRI_PLACES=142, PETRI_TRANSITIONS=88} [2024-06-28 00:12:57,836 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 112 predicate places. [2024-06-28 00:12:57,836 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 88 transitions, 735 flow [2024-06-28 00:12:57,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:57,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:12:57,837 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:12:57,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable234 [2024-06-28 00:12:57,837 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)] === [2024-06-28 00:12:57,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:12:57,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1965220212, now seen corresponding path program 11 times [2024-06-28 00:12:57,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:12:57,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299148284] [2024-06-28 00:12:57,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:12:57,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:12:57,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:12:59,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:12:59,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:12:59,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299148284] [2024-06-28 00:12:59,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299148284] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:12:59,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:12:59,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:12:59,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315359748] [2024-06-28 00:12:59,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:12:59,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:12:59,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:12:59,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:12:59,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:12:59,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:12:59,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 88 transitions, 735 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 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) [2024-06-28 00:12:59,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:12:59,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:12:59,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:13:00,380 INFO L124 PetriNetUnfolderBase]: 214/427 cut-off events. [2024-06-28 00:13:00,380 INFO L125 PetriNetUnfolderBase]: For 19613/19613 co-relation queries the response was YES. [2024-06-28 00:13:00,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2288 conditions, 427 events. 214/427 cut-off events. For 19613/19613 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1835 event pairs, 44 based on Foata normal form. 16/443 useless extension candidates. Maximal degree in co-relation 2229. Up to 306 conditions per place. [2024-06-28 00:13:00,382 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 72 selfloop transitions, 13 changer transitions 13/100 dead transitions. [2024-06-28 00:13:00,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 100 transitions, 979 flow [2024-06-28 00:13:00,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:13:00,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:13:00,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 105 transitions. [2024-06-28 00:13:00,383 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28225806451612906 [2024-06-28 00:13:00,383 INFO L175 Difference]: Start difference. First operand has 142 places, 88 transitions, 735 flow. Second operand 12 states and 105 transitions. [2024-06-28 00:13:00,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 100 transitions, 979 flow [2024-06-28 00:13:00,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 100 transitions, 951 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-28 00:13:00,404 INFO L231 Difference]: Finished difference. Result has 140 places, 78 transitions, 655 flow [2024-06-28 00:13:00,404 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=707, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=655, PETRI_PLACES=140, PETRI_TRANSITIONS=78} [2024-06-28 00:13:00,404 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 110 predicate places. [2024-06-28 00:13:00,404 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 78 transitions, 655 flow [2024-06-28 00:13:00,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 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) [2024-06-28 00:13:00,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:13:00,404 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:13:00,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable235 [2024-06-28 00:13:00,405 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)] === [2024-06-28 00:13:00,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:13:00,405 INFO L85 PathProgramCache]: Analyzing trace with hash 727657156, now seen corresponding path program 22 times [2024-06-28 00:13:00,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:13:00,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615565217] [2024-06-28 00:13:00,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:13:00,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:13:00,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:13:02,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:13:02,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:13:02,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615565217] [2024-06-28 00:13:02,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615565217] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:13:02,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:13:02,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 00:13:02,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283984279] [2024-06-28 00:13:02,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:13:02,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 00:13:02,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:13:02,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 00:13:02,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-28 00:13:02,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:13:02,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 78 transitions, 655 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:02,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:13:02,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:13:02,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:13:02,964 INFO L124 PetriNetUnfolderBase]: 179/358 cut-off events. [2024-06-28 00:13:02,964 INFO L125 PetriNetUnfolderBase]: For 12619/12619 co-relation queries the response was YES. [2024-06-28 00:13:02,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1971 conditions, 358 events. 179/358 cut-off events. For 12619/12619 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1411 event pairs, 34 based on Foata normal form. 6/364 useless extension candidates. Maximal degree in co-relation 1913. Up to 253 conditions per place. [2024-06-28 00:13:02,966 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 54 selfloop transitions, 19 changer transitions 17/92 dead transitions. [2024-06-28 00:13:02,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 92 transitions, 873 flow [2024-06-28 00:13:02,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:13:02,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:13:02,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 121 transitions. [2024-06-28 00:13:02,967 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32526881720430106 [2024-06-28 00:13:02,967 INFO L175 Difference]: Start difference. First operand has 140 places, 78 transitions, 655 flow. Second operand 12 states and 121 transitions. [2024-06-28 00:13:02,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 92 transitions, 873 flow [2024-06-28 00:13:02,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 92 transitions, 827 flow, removed 3 selfloop flow, removed 17 redundant places. [2024-06-28 00:13:02,984 INFO L231 Difference]: Finished difference. Result has 133 places, 70 transitions, 604 flow [2024-06-28 00:13:02,984 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=609, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=604, PETRI_PLACES=133, PETRI_TRANSITIONS=70} [2024-06-28 00:13:02,984 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 103 predicate places. [2024-06-28 00:13:02,985 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 70 transitions, 604 flow [2024-06-28 00:13:02,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:02,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:13:02,985 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:13:02,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable236 [2024-06-28 00:13:02,985 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)] === [2024-06-28 00:13:02,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:13:02,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1621835828, now seen corresponding path program 12 times [2024-06-28 00:13:02,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:13:02,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354988233] [2024-06-28 00:13:02,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:13:02,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:13:02,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:13:04,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:13:04,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:13:04,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354988233] [2024-06-28 00:13:04,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354988233] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:13:04,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:13:04,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:13:04,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526789886] [2024-06-28 00:13:04,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:13:04,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:13:04,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:13:04,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:13:04,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:13:04,997 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:13:04,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 70 transitions, 604 flow. Second operand has 11 states, 11 states have (on average 7.545454545454546) internal successors, (83), 11 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) [2024-06-28 00:13:04,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:13:04,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:13:04,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:13:05,157 INFO L124 PetriNetUnfolderBase]: 167/334 cut-off events. [2024-06-28 00:13:05,157 INFO L125 PetriNetUnfolderBase]: For 12334/12334 co-relation queries the response was YES. [2024-06-28 00:13:05,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1877 conditions, 334 events. 167/334 cut-off events. For 12334/12334 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1315 event pairs, 38 based on Foata normal form. 8/342 useless extension candidates. Maximal degree in co-relation 1822. Up to 206 conditions per place. [2024-06-28 00:13:05,159 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 46 selfloop transitions, 18 changer transitions 16/82 dead transitions. [2024-06-28 00:13:05,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 82 transitions, 812 flow [2024-06-28 00:13:05,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:13:05,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:13:05,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-28 00:13:05,160 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 00:13:05,160 INFO L175 Difference]: Start difference. First operand has 133 places, 70 transitions, 604 flow. Second operand 10 states and 110 transitions. [2024-06-28 00:13:05,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 82 transitions, 812 flow [2024-06-28 00:13:05,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 82 transitions, 754 flow, removed 8 selfloop flow, removed 14 redundant places. [2024-06-28 00:13:05,173 INFO L231 Difference]: Finished difference. Result has 119 places, 57 transitions, 453 flow [2024-06-28 00:13:05,173 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=548, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=453, PETRI_PLACES=119, PETRI_TRANSITIONS=57} [2024-06-28 00:13:05,173 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 89 predicate places. [2024-06-28 00:13:05,173 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 57 transitions, 453 flow [2024-06-28 00:13:05,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.545454545454546) internal successors, (83), 11 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) [2024-06-28 00:13:05,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:13:05,173 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:13:05,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable237 [2024-06-28 00:13:05,173 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)] === [2024-06-28 00:13:05,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:13:05,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1973552082, now seen corresponding path program 13 times [2024-06-28 00:13:05,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:13:05,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577105708] [2024-06-28 00:13:05,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:13:05,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:13:05,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:13:07,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:13:07,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:13:07,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577105708] [2024-06-28 00:13:07,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577105708] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:13:07,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:13:07,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 00:13:07,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520909600] [2024-06-28 00:13:07,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:13:07,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 00:13:07,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:13:07,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 00:13:07,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-28 00:13:07,318 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:13:07,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 57 transitions, 453 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:07,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:13:07,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:13:07,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:13:07,637 INFO L124 PetriNetUnfolderBase]: 137/288 cut-off events. [2024-06-28 00:13:07,637 INFO L125 PetriNetUnfolderBase]: For 8070/8070 co-relation queries the response was YES. [2024-06-28 00:13:07,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1529 conditions, 288 events. 137/288 cut-off events. For 8070/8070 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1111 event pairs, 32 based on Foata normal form. 6/294 useless extension candidates. Maximal degree in co-relation 1479. Up to 158 conditions per place. [2024-06-28 00:13:07,638 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 52 selfloop transitions, 13 changer transitions 7/74 dead transitions. [2024-06-28 00:13:07,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 74 transitions, 719 flow [2024-06-28 00:13:07,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:13:07,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:13:07,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 109 transitions. [2024-06-28 00:13:07,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29301075268817206 [2024-06-28 00:13:07,639 INFO L175 Difference]: Start difference. First operand has 119 places, 57 transitions, 453 flow. Second operand 12 states and 109 transitions. [2024-06-28 00:13:07,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 74 transitions, 719 flow [2024-06-28 00:13:07,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 74 transitions, 633 flow, removed 4 selfloop flow, removed 17 redundant places. [2024-06-28 00:13:07,649 INFO L231 Difference]: Finished difference. Result has 114 places, 54 transitions, 381 flow [2024-06-28 00:13:07,649 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=371, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=381, PETRI_PLACES=114, PETRI_TRANSITIONS=54} [2024-06-28 00:13:07,649 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 84 predicate places. [2024-06-28 00:13:07,649 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 54 transitions, 381 flow [2024-06-28 00:13:07,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:07,650 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:13:07,650 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:13:07,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable238 [2024-06-28 00:13:07,650 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)] === [2024-06-28 00:13:07,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:13:07,650 INFO L85 PathProgramCache]: Analyzing trace with hash -707000108, now seen corresponding path program 23 times [2024-06-28 00:13:07,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:13:07,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968815035] [2024-06-28 00:13:07,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:13:07,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:13:07,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:13:09,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:13:09,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:13:09,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968815035] [2024-06-28 00:13:09,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968815035] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:13:09,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:13:09,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 00:13:09,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739497007] [2024-06-28 00:13:09,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:13:09,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 00:13:09,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:13:09,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 00:13:09,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-06-28 00:13:09,976 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:13:09,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 54 transitions, 381 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:09,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:13:09,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:13:09,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:13:10,183 INFO L124 PetriNetUnfolderBase]: 127/270 cut-off events. [2024-06-28 00:13:10,183 INFO L125 PetriNetUnfolderBase]: For 7411/7411 co-relation queries the response was YES. [2024-06-28 00:13:10,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1399 conditions, 270 events. 127/270 cut-off events. For 7411/7411 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1015 event pairs, 30 based on Foata normal form. 6/276 useless extension candidates. Maximal degree in co-relation 1351. Up to 187 conditions per place. [2024-06-28 00:13:10,185 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 39 selfloop transitions, 15 changer transitions 11/67 dead transitions. [2024-06-28 00:13:10,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 67 transitions, 547 flow [2024-06-28 00:13:10,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:13:10,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:13:10,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 120 transitions. [2024-06-28 00:13:10,186 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3225806451612903 [2024-06-28 00:13:10,186 INFO L175 Difference]: Start difference. First operand has 114 places, 54 transitions, 381 flow. Second operand 12 states and 120 transitions. [2024-06-28 00:13:10,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 67 transitions, 547 flow [2024-06-28 00:13:10,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 67 transitions, 518 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-28 00:13:10,193 INFO L231 Difference]: Finished difference. Result has 111 places, 50 transitions, 355 flow [2024-06-28 00:13:10,193 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=352, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=355, PETRI_PLACES=111, PETRI_TRANSITIONS=50} [2024-06-28 00:13:10,194 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 81 predicate places. [2024-06-28 00:13:10,194 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 50 transitions, 355 flow [2024-06-28 00:13:10,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:10,194 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:13:10,194 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:13:10,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable239 [2024-06-28 00:13:10,194 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)] === [2024-06-28 00:13:10,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:13:10,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1850858676, now seen corresponding path program 14 times [2024-06-28 00:13:10,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:13:10,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438329739] [2024-06-28 00:13:10,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:13:10,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:13:10,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:13:12,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:13:12,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:13:12,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438329739] [2024-06-28 00:13:12,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438329739] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:13:12,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:13:12,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 00:13:12,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218020071] [2024-06-28 00:13:12,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:13:12,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 00:13:12,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:13:12,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 00:13:12,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-28 00:13:12,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 00:13:12,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 50 transitions, 355 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:12,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:13:12,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 00:13:12,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:13:12,794 INFO L124 PetriNetUnfolderBase]: 101/216 cut-off events. [2024-06-28 00:13:12,794 INFO L125 PetriNetUnfolderBase]: For 4666/4666 co-relation queries the response was YES. [2024-06-28 00:13:12,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1008 conditions, 216 events. 101/216 cut-off events. For 4666/4666 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 720 event pairs, 24 based on Foata normal form. 8/224 useless extension candidates. Maximal degree in co-relation 962. Up to 142 conditions per place. [2024-06-28 00:13:12,795 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 35 selfloop transitions, 6 changer transitions 20/63 dead transitions. [2024-06-28 00:13:12,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 63 transitions, 525 flow [2024-06-28 00:13:12,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 00:13:12,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 00:13:12,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 108 transitions. [2024-06-28 00:13:12,796 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2679900744416873 [2024-06-28 00:13:12,796 INFO L175 Difference]: Start difference. First operand has 111 places, 50 transitions, 355 flow. Second operand 13 states and 108 transitions. [2024-06-28 00:13:12,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 63 transitions, 525 flow [2024-06-28 00:13:12,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 63 transitions, 489 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-28 00:13:12,801 INFO L231 Difference]: Finished difference. Result has 107 places, 40 transitions, 270 flow [2024-06-28 00:13:12,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=319, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=270, PETRI_PLACES=107, PETRI_TRANSITIONS=40} [2024-06-28 00:13:12,801 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 77 predicate places. [2024-06-28 00:13:12,801 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 40 transitions, 270 flow [2024-06-28 00:13:12,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:12,801 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:13:12,801 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:13:12,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable240 [2024-06-28 00:13:12,801 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)] === [2024-06-28 00:13:12,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:13:12,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1849982746, now seen corresponding path program 24 times [2024-06-28 00:13:12,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:13:12,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155098924] [2024-06-28 00:13:12,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:13:12,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:13:12,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:13:14,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:13:14,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:13:14,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155098924] [2024-06-28 00:13:14,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155098924] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:13:14,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:13:14,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:13:14,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49994491] [2024-06-28 00:13:14,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:13:14,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:13:14,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:13:14,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:13:14,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:13:14,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:13:14,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 40 transitions, 270 flow. Second operand has 11 states, 11 states have (on average 7.545454545454546) internal successors, (83), 11 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) [2024-06-28 00:13:14,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:13:14,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:13:14,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:13:14,910 INFO L124 PetriNetUnfolderBase]: 81/176 cut-off events. [2024-06-28 00:13:14,910 INFO L125 PetriNetUnfolderBase]: For 3358/3358 co-relation queries the response was YES. [2024-06-28 00:13:14,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 807 conditions, 176 events. 81/176 cut-off events. For 3358/3358 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 537 event pairs, 20 based on Foata normal form. 6/182 useless extension candidates. Maximal degree in co-relation 763. Up to 106 conditions per place. [2024-06-28 00:13:14,910 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 30 selfloop transitions, 8 changer transitions 12/52 dead transitions. [2024-06-28 00:13:14,911 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 52 transitions, 404 flow [2024-06-28 00:13:14,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:13:14,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:13:14,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 101 transitions. [2024-06-28 00:13:14,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3258064516129032 [2024-06-28 00:13:14,911 INFO L175 Difference]: Start difference. First operand has 107 places, 40 transitions, 270 flow. Second operand 10 states and 101 transitions. [2024-06-28 00:13:14,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 52 transitions, 404 flow [2024-06-28 00:13:14,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 52 transitions, 366 flow, removed 12 selfloop flow, removed 13 redundant places. [2024-06-28 00:13:14,914 INFO L231 Difference]: Finished difference. Result has 88 places, 34 transitions, 211 flow [2024-06-28 00:13:14,915 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=211, PETRI_PLACES=88, PETRI_TRANSITIONS=34} [2024-06-28 00:13:14,915 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 58 predicate places. [2024-06-28 00:13:14,915 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 34 transitions, 211 flow [2024-06-28 00:13:14,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.545454545454546) internal successors, (83), 11 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) [2024-06-28 00:13:14,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:13:14,915 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:13:14,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable241 [2024-06-28 00:13:14,915 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)] === [2024-06-28 00:13:14,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:13:14,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1850155726, now seen corresponding path program 25 times [2024-06-28 00:13:14,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:13:14,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750668129] [2024-06-28 00:13:14,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:13:14,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:13:14,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:13:17,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:13:17,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:13:17,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750668129] [2024-06-28 00:13:17,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750668129] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:13:17,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:13:17,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 00:13:17,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422506667] [2024-06-28 00:13:17,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:13:17,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 00:13:17,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:13:17,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 00:13:17,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-28 00:13:17,222 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:13:17,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 34 transitions, 211 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:17,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:13:17,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:13:17,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:13:17,406 INFO L124 PetriNetUnfolderBase]: 70/155 cut-off events. [2024-06-28 00:13:17,406 INFO L125 PetriNetUnfolderBase]: For 1991/1991 co-relation queries the response was YES. [2024-06-28 00:13:17,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 653 conditions, 155 events. 70/155 cut-off events. For 1991/1991 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 439 event pairs, 16 based on Foata normal form. 6/161 useless extension candidates. Maximal degree in co-relation 615. Up to 88 conditions per place. [2024-06-28 00:13:17,407 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 25 selfloop transitions, 7 changer transitions 14/48 dead transitions. [2024-06-28 00:13:17,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 48 transitions, 337 flow [2024-06-28 00:13:17,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:13:17,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:13:17,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 112 transitions. [2024-06-28 00:13:17,408 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3010752688172043 [2024-06-28 00:13:17,408 INFO L175 Difference]: Start difference. First operand has 88 places, 34 transitions, 211 flow. Second operand 12 states and 112 transitions. [2024-06-28 00:13:17,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 48 transitions, 337 flow [2024-06-28 00:13:17,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 48 transitions, 309 flow, removed 3 selfloop flow, removed 13 redundant places. [2024-06-28 00:13:17,410 INFO L231 Difference]: Finished difference. Result has 82 places, 29 transitions, 175 flow [2024-06-28 00:13:17,410 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=175, PETRI_PLACES=82, PETRI_TRANSITIONS=29} [2024-06-28 00:13:17,410 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 52 predicate places. [2024-06-28 00:13:17,410 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 29 transitions, 175 flow [2024-06-28 00:13:17,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:17,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:13:17,410 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:13:17,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable242 [2024-06-28 00:13:17,410 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)] === [2024-06-28 00:13:17,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:13:17,411 INFO L85 PathProgramCache]: Analyzing trace with hash -698422470, now seen corresponding path program 15 times [2024-06-28 00:13:17,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:13:17,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143756507] [2024-06-28 00:13:17,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:13:17,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:13:17,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:13:19,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:13:19,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:13:19,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143756507] [2024-06-28 00:13:19,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143756507] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:13:19,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:13:19,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:13:19,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265393998] [2024-06-28 00:13:19,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:13:19,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:13:19,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:13:19,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:13:19,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:13:19,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 00:13:19,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 29 transitions, 175 flow. Second operand has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 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) [2024-06-28 00:13:19,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:13:19,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 00:13:19,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:13:19,399 INFO L124 PetriNetUnfolderBase]: 58/131 cut-off events. [2024-06-28 00:13:19,399 INFO L125 PetriNetUnfolderBase]: For 1571/1571 co-relation queries the response was YES. [2024-06-28 00:13:19,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 559 conditions, 131 events. 58/131 cut-off events. For 1571/1571 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 341 event pairs, 14 based on Foata normal form. 6/137 useless extension candidates. Maximal degree in co-relation 523. Up to 66 conditions per place. [2024-06-28 00:13:19,399 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 20 selfloop transitions, 10 changer transitions 7/40 dead transitions. [2024-06-28 00:13:19,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 40 transitions, 279 flow [2024-06-28 00:13:19,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:13:19,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:13:19,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 113 transitions. [2024-06-28 00:13:19,400 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3313782991202346 [2024-06-28 00:13:19,400 INFO L175 Difference]: Start difference. First operand has 82 places, 29 transitions, 175 flow. Second operand 11 states and 113 transitions. [2024-06-28 00:13:19,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 40 transitions, 279 flow [2024-06-28 00:13:19,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 40 transitions, 251 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-28 00:13:19,402 INFO L231 Difference]: Finished difference. Result has 73 places, 26 transitions, 154 flow [2024-06-28 00:13:19,402 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=154, PETRI_PLACES=73, PETRI_TRANSITIONS=26} [2024-06-28 00:13:19,402 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 43 predicate places. [2024-06-28 00:13:19,402 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 26 transitions, 154 flow [2024-06-28 00:13:19,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 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) [2024-06-28 00:13:19,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:13:19,402 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:13:19,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable243 [2024-06-28 00:13:19,402 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)] === [2024-06-28 00:13:19,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:13:19,402 INFO L85 PathProgramCache]: Analyzing trace with hash -698710770, now seen corresponding path program 16 times [2024-06-28 00:13:19,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:13:19,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330375162] [2024-06-28 00:13:19,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:13:19,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:13:19,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:13:21,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:13:21,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:13:21,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330375162] [2024-06-28 00:13:21,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330375162] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:13:21,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:13:21,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:13:21,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32265897] [2024-06-28 00:13:21,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:13:21,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:13:21,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:13:21,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:13:21,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:13:21,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 00:13:21,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 26 transitions, 154 flow. Second operand has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 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) [2024-06-28 00:13:21,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:13:21,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 00:13:21,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:13:21,408 INFO L124 PetriNetUnfolderBase]: 30/75 cut-off events. [2024-06-28 00:13:21,408 INFO L125 PetriNetUnfolderBase]: For 603/603 co-relation queries the response was YES. [2024-06-28 00:13:21,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 276 conditions, 75 events. 30/75 cut-off events. For 603/603 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 126 event pairs, 6 based on Foata normal form. 8/83 useless extension candidates. Maximal degree in co-relation 244. Up to 42 conditions per place. [2024-06-28 00:13:21,408 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 0 selfloop transitions, 0 changer transitions 33/33 dead transitions. [2024-06-28 00:13:21,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 33 transitions, 204 flow [2024-06-28 00:13:21,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:13:21,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:13:21,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 107 transitions. [2024-06-28 00:13:21,409 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31378299120234604 [2024-06-28 00:13:21,409 INFO L175 Difference]: Start difference. First operand has 73 places, 26 transitions, 154 flow. Second operand 11 states and 107 transitions. [2024-06-28 00:13:21,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 33 transitions, 204 flow [2024-06-28 00:13:21,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 33 transitions, 157 flow, removed 4 selfloop flow, removed 17 redundant places. [2024-06-28 00:13:21,410 INFO L231 Difference]: Finished difference. Result has 62 places, 0 transitions, 0 flow [2024-06-28 00:13:21,410 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=62, PETRI_TRANSITIONS=0} [2024-06-28 00:13:21,410 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 32 predicate places. [2024-06-28 00:13:21,410 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 0 transitions, 0 flow [2024-06-28 00:13:21,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 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) [2024-06-28 00:13:21,412 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-28 00:13:21,414 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-28 00:13:21,414 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-28 00:13:21,414 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-28 00:13:21,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable244 [2024-06-28 00:13:21,415 INFO L445 BasicCegarLoop]: Path program histogram: [40, 30, 25, 16, 16, 15, 15, 13, 9, 8, 7, 7, 6, 6, 6, 5, 5, 5, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:13:21,418 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-28 00:13:21,418 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-28 00:13:21,422 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-28 00:13:21,422 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-28 00:13:21,423 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.06 12:13:21 BasicIcfg [2024-06-28 00:13:21,423 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-28 00:13:21,423 INFO L158 Benchmark]: Toolchain (without parser) took 750248.51ms. Allocated memory was 182.5MB in the beginning and 2.5GB in the end (delta: 2.4GB). Free memory was 152.4MB in the beginning and 1.9GB in the end (delta: -1.7GB). Peak memory consumption was 618.3MB. Max. memory is 16.1GB. [2024-06-28 00:13:21,423 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 182.5MB. Free memory is still 146.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 00:13:21,424 INFO L158 Benchmark]: Witness Parser took 0.19ms. Allocated memory is still 182.5MB. Free memory was 148.3MB in the beginning and 148.3MB in the end (delta: 23.5kB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 00:13:21,424 INFO L158 Benchmark]: CACSL2BoogieTranslator took 635.16ms. Allocated memory is still 182.5MB. Free memory was 151.9MB in the beginning and 121.7MB in the end (delta: 30.1MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2024-06-28 00:13:21,424 INFO L158 Benchmark]: Boogie Procedure Inliner took 84.07ms. Allocated memory is still 182.5MB. Free memory was 121.7MB in the beginning and 118.3MB in the end (delta: 3.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-28 00:13:21,424 INFO L158 Benchmark]: Boogie Preprocessor took 65.70ms. Allocated memory is still 182.5MB. Free memory was 118.3MB in the beginning and 114.7MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-28 00:13:21,425 INFO L158 Benchmark]: RCFGBuilder took 975.40ms. Allocated memory is still 182.5MB. Free memory was 114.7MB in the beginning and 89.4MB in the end (delta: 25.3MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-06-28 00:13:21,425 INFO L158 Benchmark]: TraceAbstraction took 748479.17ms. Allocated memory was 182.5MB in the beginning and 2.5GB in the end (delta: 2.4GB). Free memory was 88.3MB in the beginning and 1.9GB in the end (delta: -1.8GB). Peak memory consumption was 555.8MB. Max. memory is 16.1GB. [2024-06-28 00:13:21,426 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 182.5MB. Free memory is still 146.6MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.19ms. Allocated memory is still 182.5MB. Free memory was 148.3MB in the beginning and 148.3MB in the end (delta: 23.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 635.16ms. Allocated memory is still 182.5MB. Free memory was 151.9MB in the beginning and 121.7MB in the end (delta: 30.1MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 84.07ms. Allocated memory is still 182.5MB. Free memory was 121.7MB in the beginning and 118.3MB in the end (delta: 3.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 65.70ms. Allocated memory is still 182.5MB. Free memory was 118.3MB in the beginning and 114.7MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 975.40ms. Allocated memory is still 182.5MB. Free memory was 114.7MB in the beginning and 89.4MB in the end (delta: 25.3MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 748479.17ms. Allocated memory was 182.5MB in the beginning and 2.5GB in the end (delta: 2.4GB). Free memory was 88.3MB in the beginning and 1.9GB in the end (delta: -1.8GB). Peak memory consumption was 555.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 805]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 806]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 50 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 748.4s, OverallIterations: 245, TraceHistogramMax: 1, PathProgramHistogramMax: 40, EmptinessCheckTime: 0.0s, AutomataDifference: 341.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 13715 SdHoareTripleChecker+Valid, 69.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 11301 mSDsluCounter, 10217 SdHoareTripleChecker+Invalid, 60.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8830 mSDsCounter, 3790 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 87317 IncrementalHoareTripleChecker+Invalid, 91107 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3790 mSolverCounterUnsat, 1387 mSDtfsCounter, 87317 mSolverCounterSat, 0.4s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2552 GetRequests, 4 SyntacticMatches, 29 SemanticMatches, 2519 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4531 ImplicationChecksByTransitivity, 102.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7638occurred in iteration=197, InterpolantAutomatonStates: 2514, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 2.8s SatisfiabilityAnalysisTime, 401.7s InterpolantComputationTime, 4085 NumberOfCodeBlocks, 4085 NumberOfCodeBlocksAsserted, 245 NumberOfCheckSat, 3840 ConstructedInterpolants, 0 QuantifiedInterpolants, 220403 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 245 InterpolantComputations, 245 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-28 00:13:21,610 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE