./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix006_power.oepc_pso.oepc_rmo.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix006_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix006_power.oepc_pso.oepc_rmo.oepc.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix006_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 23:13:52,451 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 23:13:52,521 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 23:13:52,528 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 23:13:52,528 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 23:13:52,560 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 23:13:52,561 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 23:13:52,561 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 23:13:52,562 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 23:13:52,565 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 23:13:52,565 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 23:13:52,565 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 23:13:52,566 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 23:13:52,567 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 23:13:52,567 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 23:13:52,568 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 23:13:52,568 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 23:13:52,568 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 23:13:52,568 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 23:13:52,569 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 23:13:52,569 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 23:13:52,570 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 23:13:52,570 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 23:13:52,570 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 23:13:52,570 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 23:13:52,571 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 23:13:52,571 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 23:13:52,571 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 23:13:52,572 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 23:13:52,572 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 23:13:52,573 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 23:13:52,573 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 23:13:52,573 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 23:13:52,573 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 23:13:52,573 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 23:13:52,573 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 23:13:52,574 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 23:13:52,574 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 23:13:52,574 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 23:13:52,574 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 23:13:52,574 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 23:13:52,575 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 23:13:52,575 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 23:13:52,575 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-27 23:13:52,780 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 23:13:52,797 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 23:13:52,798 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 23:13:52,799 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 23:13:52,800 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 23:13:52,800 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix006_power.oepc_pso.oepc_rmo.oepc.i [2024-06-27 23:13:53,746 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 23:13:53,936 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 23:13:53,936 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix006_power.oepc_pso.oepc_rmo.oepc.i [2024-06-27 23:13:53,952 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0cbc63bc2/c49283f792d2446fa4508b550a18ea96/FLAG18b2b0ecd [2024-06-27 23:13:53,962 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0cbc63bc2/c49283f792d2446fa4508b550a18ea96 [2024-06-27 23:13:53,964 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 23:13:53,964 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 23:13:53,965 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix006_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml [2024-06-27 23:13:54,046 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 23:13:54,047 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 23:13:54,048 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 23:13:54,048 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 23:13:54,052 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 23:13:54,052 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 11:13:53" (1/2) ... [2024-06-27 23:13:54,053 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b6921a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:13:54, skipping insertion in model container [2024-06-27 23:13:54,053 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 11:13:53" (1/2) ... [2024-06-27 23:13:54,055 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@20826bf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:13:54, skipping insertion in model container [2024-06-27 23:13:54,056 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 11:13:54" (2/2) ... [2024-06-27 23:13:54,056 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b6921a8 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:13:54, skipping insertion in model container [2024-06-27 23:13:54,057 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 11:13:54" (2/2) ... [2024-06-27 23:13:54,057 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 23:13:54,081 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 23:13:54,082 INFO L97 edCorrectnessWitness]: Location invariant before [L848-L848] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p1_EBX) + (long long )y >= 0LL && (0LL - (long long )__unbuffered_p2_EAX) + (long long )y >= 0LL) && (0LL - (long long )__unbuffered_p2_EBX) + (long long )z >= 0LL) && (0LL - (long long )__unbuffered_p2_EBX) + (long long )z$mem_tmp >= 0LL) && (0LL - (long long )z$flush_delayed) + (long long )z$r_buff0_thd1 >= 0LL) && (0LL - (long long )z$flush_delayed) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$flush_delayed) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff0_thd0) + (long long )z$r_buff0_thd1 >= 0LL) && (0LL - (long long )z$r_buff0_thd0) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff0_thd0) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff0_thd1) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff0_thd2) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff0_thd2) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff0_thd3) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff0_thd3) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff1_thd0) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd0) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff1_thd1) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd1) + (long long )z$w_buff1 >= 0LL) && (0LL - (long long )z$r_buff1_thd2) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd2) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff1_thd3) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd3) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$read_delayed) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$read_delayed) + (long long )z$w_buff0_used >= 0LL) && (1LL - (long long )z$r_buff0_thd1) + (long long )z$w_buff0_used >= 0LL) && (1LL - (long long )z$r_buff1_thd1) + (long long )z$w_buff0_used >= 0LL) && (1LL - (long long )z$w_buff0) + (long long )z$w_buff0_used >= 0LL) && (long long )__unbuffered_cnt + (long long )z$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_cnt + (long long )z$w_buff0 >= 0LL) && (long long )__unbuffered_cnt + (long long )z$w_buff0_used >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )z$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )z$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )z$w_buff0_used >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )z$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )z$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )z$w_buff0_used >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )z$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )z$w_buff0 >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )z$w_buff0_used >= 0LL) && (long long )__unbuffered_p2_EBX + (long long )z$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p2_EBX + (long long )z$w_buff0 >= 0LL) && (long long )__unbuffered_p2_EBX + (long long )z$w_buff0_used >= 0LL) && (long long )main$tmp_guard1 + (long long )z$r_buff0_thd1 >= 0LL) && (long long )main$tmp_guard1 + (long long )z$w_buff0 >= 0LL) && (long long )main$tmp_guard1 + (long long )z$w_buff0_used >= 0LL) && (long long )x + (long long )z$r_buff0_thd1 >= 0LL) && (long long )x + (long long )z$w_buff0 >= 0LL) && (long long )x + (long long )z$w_buff0_used >= 0LL) && (long long )y + (long long )z$r_buff0_thd1 >= 0LL) && (long long )y + (long long )z$w_buff0 >= 0LL) && (long long )y + (long long )z$w_buff0_used >= 0LL) && (long long )z + (long long )z$r_buff0_thd1 >= 0LL) && (long long )z + (long long )z$w_buff0 >= 0LL) && (long long )z + (long long )z$w_buff0_used >= 0LL) && (long long )z$flush_delayed + (long long )z$r_buff0_thd1 >= 0LL) && (long long )z$flush_delayed + (long long )z$w_buff0 >= 0LL) && (long long )z$flush_delayed + (long long )z$w_buff0_used >= 0LL) && (long long )z$mem_tmp + (long long )z$r_buff0_thd1 >= 0LL) && (long long )z$mem_tmp + (long long )z$w_buff0 >= 0LL) && (long long )z$mem_tmp + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd0 + (long long )z$r_buff0_thd1 >= 0LL) && (long long )z$r_buff0_thd0 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff0_thd0 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff0_thd2 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff0_thd3 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff1_thd0 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff1_thd1 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff1_thd2 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff1_thd3 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$read_delayed >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$w_buff1 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$w_buff1_used >= 0LL) && (long long )z$r_buff0_thd2 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff0_thd2 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd3 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff0_thd3 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff1_thd0 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff1_thd0 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff1_thd1 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff1_thd1 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff1_thd2 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff1_thd2 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff1_thd3 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff1_thd3 + (long long )z$w_buff0_used >= 0LL) && (long long )z$read_delayed + (long long )z$w_buff0 >= 0LL) && (long long )z$read_delayed + (long long )z$w_buff0_used >= 0LL) && (long long )z$w_buff0 + (long long )z$w_buff0_used >= 0LL) && (long long )z$w_buff0 + (long long )z$w_buff1 >= 0LL) && (long long )z$w_buff0 + (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff0_used + (long long )z$w_buff1 >= 0LL) && (long long )z$w_buff0_used + (long long )z$w_buff1_used >= 0LL) && (long long )weak$$choice0 + (long long )z$r_buff0_thd1 >= 0LL) && (long long )weak$$choice0 + (long long )z$w_buff0 >= 0LL) && (long long )weak$$choice0 + (long long )z$w_buff0_used >= 0LL) && (long long )weak$$choice2 + (long long )z$r_buff0_thd1 >= 0LL) && (long long )weak$$choice2 + (long long )z$w_buff0 >= 0LL) && (long long )weak$$choice2 + (long long )z$w_buff0_used >= 0LL) && (1LL + (long long )z$w_buff0_used) - (long long )z$w_buff1 >= 0LL) && (long long )__unbuffered_p2_EBX - (long long )z$mem_tmp >= 0LL) && (long long )z - (long long )z$mem_tmp >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff0_thd2 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff0_thd3 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff1_thd0 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff1_thd1 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff1_thd2 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff1_thd3 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$read_delayed >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$w_buff1 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$w_buff1_used >= 0LL) && (long long )z$r_buff1_thd1 - (long long )z$w_buff1 >= 0LL) && (long long )z$r_buff1_thd1 - (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff0_used >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff1 >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff0_used - (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff1 - (long long )z$w_buff1_used >= 0LL) [2024-06-27 23:13:54,083 INFO L97 edCorrectnessWitness]: Location invariant before [L849-L849] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p1_EBX) + (long long )y >= 0LL && (0LL - (long long )__unbuffered_p2_EAX) + (long long )y >= 0LL) && (0LL - (long long )__unbuffered_p2_EBX) + (long long )z >= 0LL) && (0LL - (long long )__unbuffered_p2_EBX) + (long long )z$mem_tmp >= 0LL) && (0LL - (long long )z$flush_delayed) + (long long )z$r_buff0_thd1 >= 0LL) && (0LL - (long long )z$flush_delayed) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$flush_delayed) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff0_thd0) + (long long )z$r_buff0_thd1 >= 0LL) && (0LL - (long long )z$r_buff0_thd0) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff0_thd0) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff0_thd1) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff0_thd2) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff0_thd2) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff0_thd3) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff0_thd3) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff1_thd0) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd0) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff1_thd1) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd1) + (long long )z$w_buff1 >= 0LL) && (0LL - (long long )z$r_buff1_thd2) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd2) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff1_thd3) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd3) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$read_delayed) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$read_delayed) + (long long )z$w_buff0_used >= 0LL) && (1LL - (long long )z$r_buff0_thd1) + (long long )z$w_buff0_used >= 0LL) && (1LL - (long long )z$r_buff1_thd1) + (long long )z$w_buff0_used >= 0LL) && (1LL - (long long )z$w_buff0) + (long long )z$w_buff0_used >= 0LL) && (long long )__unbuffered_cnt + (long long )z$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_cnt + (long long )z$w_buff0 >= 0LL) && (long long )__unbuffered_cnt + (long long )z$w_buff0_used >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )z$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )z$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )z$w_buff0_used >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )z$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )z$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )z$w_buff0_used >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )z$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )z$w_buff0 >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )z$w_buff0_used >= 0LL) && (long long )__unbuffered_p2_EBX + (long long )z$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p2_EBX + (long long )z$w_buff0 >= 0LL) && (long long )__unbuffered_p2_EBX + (long long )z$w_buff0_used >= 0LL) && (long long )main$tmp_guard1 + (long long )z$r_buff0_thd1 >= 0LL) && (long long )main$tmp_guard1 + (long long )z$w_buff0 >= 0LL) && (long long )main$tmp_guard1 + (long long )z$w_buff0_used >= 0LL) && (long long )x + (long long )z$r_buff0_thd1 >= 0LL) && (long long )x + (long long )z$w_buff0 >= 0LL) && (long long )x + (long long )z$w_buff0_used >= 0LL) && (long long )y + (long long )z$r_buff0_thd1 >= 0LL) && (long long )y + (long long )z$w_buff0 >= 0LL) && (long long )y + (long long )z$w_buff0_used >= 0LL) && (long long )z + (long long )z$r_buff0_thd1 >= 0LL) && (long long )z + (long long )z$w_buff0 >= 0LL) && (long long )z + (long long )z$w_buff0_used >= 0LL) && (long long )z$flush_delayed + (long long )z$r_buff0_thd1 >= 0LL) && (long long )z$flush_delayed + (long long )z$w_buff0 >= 0LL) && (long long )z$flush_delayed + (long long )z$w_buff0_used >= 0LL) && (long long )z$mem_tmp + (long long )z$r_buff0_thd1 >= 0LL) && (long long )z$mem_tmp + (long long )z$w_buff0 >= 0LL) && (long long )z$mem_tmp + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd0 + (long long )z$r_buff0_thd1 >= 0LL) && (long long )z$r_buff0_thd0 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff0_thd0 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff0_thd2 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff0_thd3 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff1_thd0 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff1_thd1 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff1_thd2 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff1_thd3 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$read_delayed >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$w_buff1 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$w_buff1_used >= 0LL) && (long long )z$r_buff0_thd2 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff0_thd2 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd3 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff0_thd3 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff1_thd0 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff1_thd0 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff1_thd1 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff1_thd1 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff1_thd2 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff1_thd2 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff1_thd3 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff1_thd3 + (long long )z$w_buff0_used >= 0LL) && (long long )z$read_delayed + (long long )z$w_buff0 >= 0LL) && (long long )z$read_delayed + (long long )z$w_buff0_used >= 0LL) && (long long )z$w_buff0 + (long long )z$w_buff0_used >= 0LL) && (long long )z$w_buff0 + (long long )z$w_buff1 >= 0LL) && (long long )z$w_buff0 + (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff0_used + (long long )z$w_buff1 >= 0LL) && (long long )z$w_buff0_used + (long long )z$w_buff1_used >= 0LL) && (long long )weak$$choice0 + (long long )z$r_buff0_thd1 >= 0LL) && (long long )weak$$choice0 + (long long )z$w_buff0 >= 0LL) && (long long )weak$$choice0 + (long long )z$w_buff0_used >= 0LL) && (long long )weak$$choice2 + (long long )z$r_buff0_thd1 >= 0LL) && (long long )weak$$choice2 + (long long )z$w_buff0 >= 0LL) && (long long )weak$$choice2 + (long long )z$w_buff0_used >= 0LL) && (1LL + (long long )z$w_buff0_used) - (long long )z$w_buff1 >= 0LL) && (long long )__unbuffered_p2_EBX - (long long )z$mem_tmp >= 0LL) && (long long )z - (long long )z$mem_tmp >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff0_thd2 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff0_thd3 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff1_thd0 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff1_thd1 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff1_thd2 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff1_thd3 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$read_delayed >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$w_buff1 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$w_buff1_used >= 0LL) && (long long )z$r_buff1_thd1 - (long long )z$w_buff1 >= 0LL) && (long long )z$r_buff1_thd1 - (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff0_used >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff1 >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff0_used - (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff1 - (long long )z$w_buff1_used >= 0LL) [2024-06-27 23:13:54,083 INFO L97 edCorrectnessWitness]: Location invariant before [L846-L846] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p1_EBX) + (long long )y >= 0LL && (0LL - (long long )__unbuffered_p2_EAX) + (long long )y >= 0LL) && (0LL - (long long )__unbuffered_p2_EBX) + (long long )z >= 0LL) && (0LL - (long long )__unbuffered_p2_EBX) + (long long )z$mem_tmp >= 0LL) && (0LL - (long long )z$flush_delayed) + (long long )z$r_buff0_thd1 >= 0LL) && (0LL - (long long )z$flush_delayed) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$flush_delayed) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff0_thd0) + (long long )z$r_buff0_thd1 >= 0LL) && (0LL - (long long )z$r_buff0_thd0) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff0_thd0) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff0_thd1) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff0_thd2) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff0_thd2) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff0_thd3) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff0_thd3) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff1_thd0) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd0) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff1_thd1) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd1) + (long long )z$w_buff1 >= 0LL) && (0LL - (long long )z$r_buff1_thd2) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd2) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff1_thd3) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd3) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$read_delayed) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$read_delayed) + (long long )z$w_buff0_used >= 0LL) && (1LL - (long long )z$r_buff0_thd1) + (long long )z$w_buff0_used >= 0LL) && (1LL - (long long )z$r_buff1_thd1) + (long long )z$w_buff0_used >= 0LL) && (1LL - (long long )z$w_buff0) + (long long )z$w_buff0_used >= 0LL) && (long long )__unbuffered_cnt + (long long )z$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_cnt + (long long )z$w_buff0 >= 0LL) && (long long )__unbuffered_cnt + (long long )z$w_buff0_used >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )z$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )z$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )z$w_buff0_used >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )z$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )z$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )z$w_buff0_used >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )z$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )z$w_buff0 >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )z$w_buff0_used >= 0LL) && (long long )__unbuffered_p2_EBX + (long long )z$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p2_EBX + (long long )z$w_buff0 >= 0LL) && (long long )__unbuffered_p2_EBX + (long long )z$w_buff0_used >= 0LL) && (long long )main$tmp_guard1 + (long long )z$r_buff0_thd1 >= 0LL) && (long long )main$tmp_guard1 + (long long )z$w_buff0 >= 0LL) && (long long )main$tmp_guard1 + (long long )z$w_buff0_used >= 0LL) && (long long )x + (long long )z$r_buff0_thd1 >= 0LL) && (long long )x + (long long )z$w_buff0 >= 0LL) && (long long )x + (long long )z$w_buff0_used >= 0LL) && (long long )y + (long long )z$r_buff0_thd1 >= 0LL) && (long long )y + (long long )z$w_buff0 >= 0LL) && (long long )y + (long long )z$w_buff0_used >= 0LL) && (long long )z + (long long )z$r_buff0_thd1 >= 0LL) && (long long )z + (long long )z$w_buff0 >= 0LL) && (long long )z + (long long )z$w_buff0_used >= 0LL) && (long long )z$flush_delayed + (long long )z$r_buff0_thd1 >= 0LL) && (long long )z$flush_delayed + (long long )z$w_buff0 >= 0LL) && (long long )z$flush_delayed + (long long )z$w_buff0_used >= 0LL) && (long long )z$mem_tmp + (long long )z$r_buff0_thd1 >= 0LL) && (long long )z$mem_tmp + (long long )z$w_buff0 >= 0LL) && (long long )z$mem_tmp + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd0 + (long long )z$r_buff0_thd1 >= 0LL) && (long long )z$r_buff0_thd0 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff0_thd0 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff0_thd2 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff0_thd3 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff1_thd0 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff1_thd1 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff1_thd2 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff1_thd3 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$read_delayed >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$w_buff1 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$w_buff1_used >= 0LL) && (long long )z$r_buff0_thd2 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff0_thd2 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd3 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff0_thd3 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff1_thd0 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff1_thd0 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff1_thd1 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff1_thd1 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff1_thd2 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff1_thd2 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff1_thd3 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff1_thd3 + (long long )z$w_buff0_used >= 0LL) && (long long )z$read_delayed + (long long )z$w_buff0 >= 0LL) && (long long )z$read_delayed + (long long )z$w_buff0_used >= 0LL) && (long long )z$w_buff0 + (long long )z$w_buff0_used >= 0LL) && (long long )z$w_buff0 + (long long )z$w_buff1 >= 0LL) && (long long )z$w_buff0 + (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff0_used + (long long )z$w_buff1 >= 0LL) && (long long )z$w_buff0_used + (long long )z$w_buff1_used >= 0LL) && (long long )weak$$choice0 + (long long )z$r_buff0_thd1 >= 0LL) && (long long )weak$$choice0 + (long long )z$w_buff0 >= 0LL) && (long long )weak$$choice0 + (long long )z$w_buff0_used >= 0LL) && (long long )weak$$choice2 + (long long )z$r_buff0_thd1 >= 0LL) && (long long )weak$$choice2 + (long long )z$w_buff0 >= 0LL) && (long long )weak$$choice2 + (long long )z$w_buff0_used >= 0LL) && (1LL + (long long )z$w_buff0_used) - (long long )z$w_buff1 >= 0LL) && (long long )__unbuffered_p2_EBX - (long long )z$mem_tmp >= 0LL) && (long long )z - (long long )z$mem_tmp >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff0_thd2 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff0_thd3 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff1_thd0 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff1_thd1 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff1_thd2 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff1_thd3 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$read_delayed >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$w_buff1 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$w_buff1_used >= 0LL) && (long long )z$r_buff1_thd1 - (long long )z$w_buff1 >= 0LL) && (long long )z$r_buff1_thd1 - (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff0_used >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff1 >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff0_used - (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff1 - (long long )z$w_buff1_used >= 0LL) [2024-06-27 23:13:54,083 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 23:13:54,083 INFO L106 edCorrectnessWitness]: ghost_update [L844-L844] multithreaded = 1; [2024-06-27 23:13:54,123 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 23:13:54,492 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 23:13:54,502 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 23:13:54,707 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 23:13:54,757 INFO L206 MainTranslator]: Completed translation [2024-06-27 23:13:54,757 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:13:54 WrapperNode [2024-06-27 23:13:54,757 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 23:13:54,759 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 23:13:54,759 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 23:13:54,759 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 23:13:54,764 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 27.06 11:13:54" (1/1) ... [2024-06-27 23:13:54,783 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 27.06 11:13:54" (1/1) ... [2024-06-27 23:13:54,828 INFO L138 Inliner]: procedures = 175, calls = 47, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 127 [2024-06-27 23:13:54,828 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 23:13:54,829 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 23:13:54,829 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 23:13:54,829 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 23:13:54,837 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:13:54" (1/1) ... [2024-06-27 23:13:54,837 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:13:54" (1/1) ... [2024-06-27 23:13:54,855 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:13:54" (1/1) ... [2024-06-27 23:13:54,882 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-27 23:13:54,882 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:13:54" (1/1) ... [2024-06-27 23:13:54,882 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:13:54" (1/1) ... [2024-06-27 23:13:54,900 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:13:54" (1/1) ... [2024-06-27 23:13:54,902 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:13:54" (1/1) ... [2024-06-27 23:13:54,909 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:13:54" (1/1) ... [2024-06-27 23:13:54,911 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:13:54" (1/1) ... [2024-06-27 23:13:54,918 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 23:13:54,919 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 23:13:54,919 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 23:13:54,919 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 23:13:54,920 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:13:54" (1/1) ... [2024-06-27 23:13:54,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 23:13:54,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 23:13:54,942 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-27 23:13:54,950 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-27 23:13:54,971 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 23:13:54,971 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 23:13:54,971 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 23:13:54,972 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 23:13:54,972 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 23:13:54,972 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 23:13:54,972 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 23:13:54,972 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 23:13:54,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 23:13:54,973 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 23:13:54,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 23:13:54,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 23:13:54,974 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 23:13:55,110 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 23:13:55,113 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 23:13:55,611 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 23:13:55,612 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 23:13:55,754 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 23:13:55,754 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 23:13:55,754 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 11:13:55 BoogieIcfgContainer [2024-06-27 23:13:55,755 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 23:13:55,756 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 23:13:55,757 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 23:13:55,759 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 23:13:55,759 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 11:13:53" (1/4) ... [2024-06-27 23:13:55,760 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3222887c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 11:13:55, skipping insertion in model container [2024-06-27 23:13:55,760 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 11:13:54" (2/4) ... [2024-06-27 23:13:55,760 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3222887c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 11:13:55, skipping insertion in model container [2024-06-27 23:13:55,760 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:13:54" (3/4) ... [2024-06-27 23:13:55,762 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3222887c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 11:13:55, skipping insertion in model container [2024-06-27 23:13:55,762 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 11:13:55" (4/4) ... [2024-06-27 23:13:55,763 INFO L112 eAbstractionObserver]: Analyzing ICFG mix006_power.oepc_pso.oepc_rmo.oepc.i [2024-06-27 23:13:55,776 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 23:13:55,776 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-27 23:13:55,776 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 23:13:55,830 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 23:13:55,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 52 places, 42 transitions, 96 flow [2024-06-27 23:13:55,892 INFO L124 PetriNetUnfolderBase]: 0/39 cut-off events. [2024-06-27 23:13:55,893 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 23:13:55,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49 conditions, 39 events. 0/39 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 71 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-27 23:13:55,895 INFO L82 GeneralOperation]: Start removeDead. Operand has 52 places, 42 transitions, 96 flow [2024-06-27 23:13:55,898 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 33 transitions, 75 flow [2024-06-27 23:13:55,930 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 23:13:55,935 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;@31a3d53f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 23:13:55,935 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-06-27 23:13:55,940 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 23:13:55,941 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-27 23:13:55,941 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 23:13:55,941 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:13:55,941 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 23:13:55,942 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:13:55,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:13:55,948 INFO L85 PathProgramCache]: Analyzing trace with hash 377005305, now seen corresponding path program 1 times [2024-06-27 23:13:55,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:13:55,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987110242] [2024-06-27 23:13:55,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:13:55,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:13:56,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:13:57,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:13:57,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:13:57,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987110242] [2024-06-27 23:13:57,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987110242] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:13:57,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:13:57,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 23:13:57,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99488962] [2024-06-27 23:13:57,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:13:57,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 23:13:57,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:13:57,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 23:13:57,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 23:13:57,448 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 42 [2024-06-27 23:13:57,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 33 transitions, 75 flow. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:13:57,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:13:57,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 42 [2024-06-27 23:13:57,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:13:57,801 INFO L124 PetriNetUnfolderBase]: 1363/2135 cut-off events. [2024-06-27 23:13:57,802 INFO L125 PetriNetUnfolderBase]: For 35/35 co-relation queries the response was YES. [2024-06-27 23:13:57,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4259 conditions, 2135 events. 1363/2135 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 10695 event pairs, 964 based on Foata normal form. 1/2073 useless extension candidates. Maximal degree in co-relation 4247. Up to 2037 conditions per place. [2024-06-27 23:13:57,814 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 32 selfloop transitions, 4 changer transitions 0/43 dead transitions. [2024-06-27 23:13:57,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 43 transitions, 173 flow [2024-06-27 23:13:57,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 23:13:57,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 23:13:57,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 78 transitions. [2024-06-27 23:13:57,822 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6190476190476191 [2024-06-27 23:13:57,823 INFO L175 Difference]: Start difference. First operand has 43 places, 33 transitions, 75 flow. Second operand 3 states and 78 transitions. [2024-06-27 23:13:57,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 43 transitions, 173 flow [2024-06-27 23:13:57,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 43 transitions, 168 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 23:13:57,827 INFO L231 Difference]: Finished difference. Result has 43 places, 36 transitions, 102 flow [2024-06-27 23:13:57,828 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=43, PETRI_TRANSITIONS=36} [2024-06-27 23:13:57,830 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 0 predicate places. [2024-06-27 23:13:57,831 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 36 transitions, 102 flow [2024-06-27 23:13:57,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:13:57,831 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:13:57,831 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:13:57,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 23:13:57,831 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:13:57,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:13:57,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1524958002, now seen corresponding path program 1 times [2024-06-27 23:13:57,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:13:57,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709177599] [2024-06-27 23:13:57,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:13:57,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:13:57,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:13:58,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:13:58,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:13:58,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709177599] [2024-06-27 23:13:58,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709177599] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:13:58,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:13:58,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 23:13:58,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960719446] [2024-06-27 23:13:58,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:13:58,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 23:13:58,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:13:58,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 23:13:58,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 23:13:58,724 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 42 [2024-06-27 23:13:58,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 36 transitions, 102 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:13:58,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:13:58,725 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 42 [2024-06-27 23:13:58,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:13:59,052 INFO L124 PetriNetUnfolderBase]: 1357/2136 cut-off events. [2024-06-27 23:13:59,052 INFO L125 PetriNetUnfolderBase]: For 410/410 co-relation queries the response was YES. [2024-06-27 23:13:59,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4803 conditions, 2136 events. 1357/2136 cut-off events. For 410/410 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 10701 event pairs, 840 based on Foata normal form. 3/2115 useless extension candidates. Maximal degree in co-relation 4791. Up to 2013 conditions per place. [2024-06-27 23:13:59,065 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 39 selfloop transitions, 7 changer transitions 0/53 dead transitions. [2024-06-27 23:13:59,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 53 transitions, 240 flow [2024-06-27 23:13:59,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 23:13:59,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 23:13:59,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 101 transitions. [2024-06-27 23:13:59,068 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6011904761904762 [2024-06-27 23:13:59,068 INFO L175 Difference]: Start difference. First operand has 43 places, 36 transitions, 102 flow. Second operand 4 states and 101 transitions. [2024-06-27 23:13:59,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 53 transitions, 240 flow [2024-06-27 23:13:59,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 53 transitions, 236 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 23:13:59,071 INFO L231 Difference]: Finished difference. Result has 46 places, 39 transitions, 138 flow [2024-06-27 23:13:59,072 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=138, PETRI_PLACES=46, PETRI_TRANSITIONS=39} [2024-06-27 23:13:59,072 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 3 predicate places. [2024-06-27 23:13:59,073 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 39 transitions, 138 flow [2024-06-27 23:13:59,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:13:59,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:13:59,074 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:13:59,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 23:13:59,076 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:13:59,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:13:59,079 INFO L85 PathProgramCache]: Analyzing trace with hash 29058688, now seen corresponding path program 1 times [2024-06-27 23:13:59,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:13:59,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626831276] [2024-06-27 23:13:59,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:13:59,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:13:59,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:14:00,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:14:00,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:14:00,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626831276] [2024-06-27 23:14:00,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626831276] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:14:00,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:14:00,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 23:14:00,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74441212] [2024-06-27 23:14:00,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:14:00,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 23:14:00,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:14:00,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 23:14:00,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 23:14:00,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 42 [2024-06-27 23:14:00,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 39 transitions, 138 flow. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:14:00,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:14:00,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 42 [2024-06-27 23:14:00,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:14:00,566 INFO L124 PetriNetUnfolderBase]: 1661/2580 cut-off events. [2024-06-27 23:14:00,566 INFO L125 PetriNetUnfolderBase]: For 1329/1329 co-relation queries the response was YES. [2024-06-27 23:14:00,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6406 conditions, 2580 events. 1661/2580 cut-off events. For 1329/1329 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 12701 event pairs, 812 based on Foata normal form. 5/2585 useless extension candidates. Maximal degree in co-relation 6392. Up to 2387 conditions per place. [2024-06-27 23:14:00,580 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 53 selfloop transitions, 16 changer transitions 0/75 dead transitions. [2024-06-27 23:14:00,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 75 transitions, 396 flow [2024-06-27 23:14:00,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 23:14:00,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 23:14:00,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 128 transitions. [2024-06-27 23:14:00,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6095238095238096 [2024-06-27 23:14:00,585 INFO L175 Difference]: Start difference. First operand has 46 places, 39 transitions, 138 flow. Second operand 5 states and 128 transitions. [2024-06-27 23:14:00,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 75 transitions, 396 flow [2024-06-27 23:14:00,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 75 transitions, 382 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-27 23:14:00,589 INFO L231 Difference]: Finished difference. Result has 51 places, 50 transitions, 237 flow [2024-06-27 23:14:00,590 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=237, PETRI_PLACES=51, PETRI_TRANSITIONS=50} [2024-06-27 23:14:00,591 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 8 predicate places. [2024-06-27 23:14:00,591 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 50 transitions, 237 flow [2024-06-27 23:14:00,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:14:00,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:14:00,591 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:14:00,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 23:14:00,592 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:14:00,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:14:00,593 INFO L85 PathProgramCache]: Analyzing trace with hash 817703351, now seen corresponding path program 1 times [2024-06-27 23:14:00,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:14:00,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776235272] [2024-06-27 23:14:00,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:14:00,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:14:00,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:14:01,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:14:01,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:14:01,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776235272] [2024-06-27 23:14:01,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776235272] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:14:01,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:14:01,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:14:01,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451005866] [2024-06-27 23:14:01,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:14:01,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:14:01,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:14:01,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:14:01,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:14:01,825 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 42 [2024-06-27 23:14:01,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 50 transitions, 237 flow. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:14:01,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:14:01,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 42 [2024-06-27 23:14:01,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:14:02,261 INFO L124 PetriNetUnfolderBase]: 1669/2592 cut-off events. [2024-06-27 23:14:02,262 INFO L125 PetriNetUnfolderBase]: For 3080/3082 co-relation queries the response was YES. [2024-06-27 23:14:02,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7525 conditions, 2592 events. 1669/2592 cut-off events. For 3080/3082 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 12792 event pairs, 666 based on Foata normal form. 7/2599 useless extension candidates. Maximal degree in co-relation 7508. Up to 2373 conditions per place. [2024-06-27 23:14:02,276 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 60 selfloop transitions, 20 changer transitions 0/86 dead transitions. [2024-06-27 23:14:02,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 86 transitions, 523 flow [2024-06-27 23:14:02,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:14:02,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:14:02,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 151 transitions. [2024-06-27 23:14:02,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5992063492063492 [2024-06-27 23:14:02,278 INFO L175 Difference]: Start difference. First operand has 51 places, 50 transitions, 237 flow. Second operand 6 states and 151 transitions. [2024-06-27 23:14:02,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 86 transitions, 523 flow [2024-06-27 23:14:02,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 86 transitions, 515 flow, removed 4 selfloop flow, removed 0 redundant places. [2024-06-27 23:14:02,282 INFO L231 Difference]: Finished difference. Result has 57 places, 54 transitions, 310 flow [2024-06-27 23:14:02,282 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=310, PETRI_PLACES=57, PETRI_TRANSITIONS=54} [2024-06-27 23:14:02,283 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 14 predicate places. [2024-06-27 23:14:02,283 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 54 transitions, 310 flow [2024-06-27 23:14:02,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:14:02,283 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:14:02,284 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:14:02,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 23:14:02,284 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:14:02,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:14:02,284 INFO L85 PathProgramCache]: Analyzing trace with hash -2139342657, now seen corresponding path program 1 times [2024-06-27 23:14:02,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:14:02,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064490557] [2024-06-27 23:14:02,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:14:02,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:14:02,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:14:03,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:14:03,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:14:03,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064490557] [2024-06-27 23:14:03,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064490557] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:14:03,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:14:03,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:14:03,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524195343] [2024-06-27 23:14:03,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:14:03,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:14:03,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:14:03,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:14:03,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:14:03,631 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 42 [2024-06-27 23:14:03,631 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 54 transitions, 310 flow. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:14:03,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:14:03,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 42 [2024-06-27 23:14:03,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:14:04,188 INFO L124 PetriNetUnfolderBase]: 1681/2612 cut-off events. [2024-06-27 23:14:04,188 INFO L125 PetriNetUnfolderBase]: For 4855/4857 co-relation queries the response was YES. [2024-06-27 23:14:04,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8396 conditions, 2612 events. 1681/2612 cut-off events. For 4855/4857 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 12888 event pairs, 502 based on Foata normal form. 12/2624 useless extension candidates. Maximal degree in co-relation 8376. Up to 2341 conditions per place. [2024-06-27 23:14:04,205 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 64 selfloop transitions, 23 changer transitions 0/93 dead transitions. [2024-06-27 23:14:04,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 93 transitions, 624 flow [2024-06-27 23:14:04,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:14:04,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:14:04,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 170 transitions. [2024-06-27 23:14:04,207 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5782312925170068 [2024-06-27 23:14:04,207 INFO L175 Difference]: Start difference. First operand has 57 places, 54 transitions, 310 flow. Second operand 7 states and 170 transitions. [2024-06-27 23:14:04,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 93 transitions, 624 flow [2024-06-27 23:14:04,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 93 transitions, 575 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-27 23:14:04,216 INFO L231 Difference]: Finished difference. Result has 59 places, 56 transitions, 337 flow [2024-06-27 23:14:04,216 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=251, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=337, PETRI_PLACES=59, PETRI_TRANSITIONS=56} [2024-06-27 23:14:04,218 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 16 predicate places. [2024-06-27 23:14:04,218 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 56 transitions, 337 flow [2024-06-27 23:14:04,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:14:04,220 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:14:04,220 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:14:04,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 23:14:04,220 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:14:04,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:14:04,221 INFO L85 PathProgramCache]: Analyzing trace with hash -799520460, now seen corresponding path program 1 times [2024-06-27 23:14:04,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:14:04,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433672895] [2024-06-27 23:14:04,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:14:04,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:14:04,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:14:05,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:14:05,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:14:05,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433672895] [2024-06-27 23:14:05,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433672895] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:14:05,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:14:05,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 23:14:05,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263200498] [2024-06-27 23:14:05,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:14:05,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 23:14:05,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:14:05,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 23:14:05,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 23:14:05,684 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-27 23:14:05,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 56 transitions, 337 flow. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:14:05,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:14:05,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-27 23:14:05,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:14:06,235 INFO L124 PetriNetUnfolderBase]: 1676/2595 cut-off events. [2024-06-27 23:14:06,235 INFO L125 PetriNetUnfolderBase]: For 7182/7182 co-relation queries the response was YES. [2024-06-27 23:14:06,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8913 conditions, 2595 events. 1676/2595 cut-off events. For 7182/7182 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 12812 event pairs, 949 based on Foata normal form. 2/2583 useless extension candidates. Maximal degree in co-relation 8891. Up to 2484 conditions per place. [2024-06-27 23:14:06,258 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 53 selfloop transitions, 10 changer transitions 0/68 dead transitions. [2024-06-27 23:14:06,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 68 transitions, 503 flow [2024-06-27 23:14:06,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 23:14:06,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 23:14:06,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 97 transitions. [2024-06-27 23:14:06,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46190476190476193 [2024-06-27 23:14:06,260 INFO L175 Difference]: Start difference. First operand has 59 places, 56 transitions, 337 flow. Second operand 5 states and 97 transitions. [2024-06-27 23:14:06,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 68 transitions, 503 flow [2024-06-27 23:14:06,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 68 transitions, 437 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-27 23:14:06,265 INFO L231 Difference]: Finished difference. Result has 60 places, 58 transitions, 318 flow [2024-06-27 23:14:06,265 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=318, PETRI_PLACES=60, PETRI_TRANSITIONS=58} [2024-06-27 23:14:06,266 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 17 predicate places. [2024-06-27 23:14:06,266 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 58 transitions, 318 flow [2024-06-27 23:14:06,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:14:06,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:14:06,266 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:14:06,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 23:14:06,267 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:14:06,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:14:06,267 INFO L85 PathProgramCache]: Analyzing trace with hash 956042634, now seen corresponding path program 1 times [2024-06-27 23:14:06,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:14:06,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270688335] [2024-06-27 23:14:06,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:14:06,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:14:06,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:14:07,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:14:07,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:14:07,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270688335] [2024-06-27 23:14:07,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270688335] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:14:07,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:14:07,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:14:07,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439224405] [2024-06-27 23:14:07,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:14:07,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:14:07,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:14:07,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:14:07,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:14:08,004 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-27 23:14:08,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 58 transitions, 318 flow. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 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) [2024-06-27 23:14:08,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:14:08,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-27 23:14:08,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:14:08,637 INFO L124 PetriNetUnfolderBase]: 1666/2599 cut-off events. [2024-06-27 23:14:08,638 INFO L125 PetriNetUnfolderBase]: For 8121/8121 co-relation queries the response was YES. [2024-06-27 23:14:08,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8891 conditions, 2599 events. 1666/2599 cut-off events. For 8121/8121 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 12931 event pairs, 913 based on Foata normal form. 4/2591 useless extension candidates. Maximal degree in co-relation 8866. Up to 2452 conditions per place. [2024-06-27 23:14:08,650 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 58 selfloop transitions, 13 changer transitions 0/76 dead transitions. [2024-06-27 23:14:08,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 76 transitions, 518 flow [2024-06-27 23:14:08,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:14:08,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:14:08,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 115 transitions. [2024-06-27 23:14:08,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45634920634920634 [2024-06-27 23:14:08,652 INFO L175 Difference]: Start difference. First operand has 60 places, 58 transitions, 318 flow. Second operand 6 states and 115 transitions. [2024-06-27 23:14:08,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 76 transitions, 518 flow [2024-06-27 23:14:08,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 76 transitions, 495 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-27 23:14:08,658 INFO L231 Difference]: Finished difference. Result has 63 places, 61 transitions, 357 flow [2024-06-27 23:14:08,658 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=295, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=357, PETRI_PLACES=63, PETRI_TRANSITIONS=61} [2024-06-27 23:14:08,659 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 20 predicate places. [2024-06-27 23:14:08,659 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 61 transitions, 357 flow [2024-06-27 23:14:08,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 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) [2024-06-27 23:14:08,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:14:08,659 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:14:08,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 23:14:08,659 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:14:08,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:14:08,660 INFO L85 PathProgramCache]: Analyzing trace with hash 943384219, now seen corresponding path program 1 times [2024-06-27 23:14:08,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:14:08,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960604435] [2024-06-27 23:14:08,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:14:08,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:14:08,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:14:10,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:14:10,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:14:10,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960604435] [2024-06-27 23:14:10,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960604435] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:14:10,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:14:10,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:14:10,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33572884] [2024-06-27 23:14:10,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:14:10,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:14:10,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:14:10,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:14:10,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:14:10,165 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-27 23:14:10,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 61 transitions, 357 flow. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 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) [2024-06-27 23:14:10,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:14:10,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-27 23:14:10,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:14:10,769 INFO L124 PetriNetUnfolderBase]: 1745/2741 cut-off events. [2024-06-27 23:14:10,770 INFO L125 PetriNetUnfolderBase]: For 9883/9895 co-relation queries the response was YES. [2024-06-27 23:14:10,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9975 conditions, 2741 events. 1745/2741 cut-off events. For 9883/9895 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 13641 event pairs, 640 based on Foata normal form. 16/2757 useless extension candidates. Maximal degree in co-relation 9948. Up to 2464 conditions per place. [2024-06-27 23:14:10,785 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 66 selfloop transitions, 30 changer transitions 0/101 dead transitions. [2024-06-27 23:14:10,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 101 transitions, 753 flow [2024-06-27 23:14:10,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:14:10,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:14:10,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 143 transitions. [2024-06-27 23:14:10,787 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48639455782312924 [2024-06-27 23:14:10,787 INFO L175 Difference]: Start difference. First operand has 63 places, 61 transitions, 357 flow. Second operand 7 states and 143 transitions. [2024-06-27 23:14:10,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 101 transitions, 753 flow [2024-06-27 23:14:10,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 101 transitions, 725 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-27 23:14:10,793 INFO L231 Difference]: Finished difference. Result has 68 places, 76 transitions, 519 flow [2024-06-27 23:14:10,793 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=519, PETRI_PLACES=68, PETRI_TRANSITIONS=76} [2024-06-27 23:14:10,794 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 25 predicate places. [2024-06-27 23:14:10,795 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 76 transitions, 519 flow [2024-06-27 23:14:10,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 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) [2024-06-27 23:14:10,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:14:10,795 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:14:10,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 23:14:10,795 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:14:10,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:14:10,796 INFO L85 PathProgramCache]: Analyzing trace with hash 262444045, now seen corresponding path program 2 times [2024-06-27 23:14:10,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:14:10,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242380970] [2024-06-27 23:14:10,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:14:10,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:14:10,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:14:11,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:14:11,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:14:11,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242380970] [2024-06-27 23:14:11,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242380970] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:14:11,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:14:11,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:14:11,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124280907] [2024-06-27 23:14:11,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:14:11,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:14:11,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:14:11,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:14:11,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:14:12,030 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-27 23:14:12,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 76 transitions, 519 flow. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 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) [2024-06-27 23:14:12,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:14:12,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-27 23:14:12,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:14:12,511 INFO L124 PetriNetUnfolderBase]: 1790/2782 cut-off events. [2024-06-27 23:14:12,511 INFO L125 PetriNetUnfolderBase]: For 12491/12495 co-relation queries the response was YES. [2024-06-27 23:14:12,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10849 conditions, 2782 events. 1790/2782 cut-off events. For 12491/12495 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 13779 event pairs, 926 based on Foata normal form. 10/2780 useless extension candidates. Maximal degree in co-relation 10819. Up to 2547 conditions per place. [2024-06-27 23:14:12,530 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 68 selfloop transitions, 36 changer transitions 0/109 dead transitions. [2024-06-27 23:14:12,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 109 transitions, 969 flow [2024-06-27 23:14:12,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:14:12,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:14:12,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 131 transitions. [2024-06-27 23:14:12,531 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.445578231292517 [2024-06-27 23:14:12,531 INFO L175 Difference]: Start difference. First operand has 68 places, 76 transitions, 519 flow. Second operand 7 states and 131 transitions. [2024-06-27 23:14:12,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 109 transitions, 969 flow [2024-06-27 23:14:12,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 109 transitions, 913 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-27 23:14:12,543 INFO L231 Difference]: Finished difference. Result has 73 places, 92 transitions, 752 flow [2024-06-27 23:14:12,543 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=481, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=752, PETRI_PLACES=73, PETRI_TRANSITIONS=92} [2024-06-27 23:14:12,544 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 30 predicate places. [2024-06-27 23:14:12,544 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 92 transitions, 752 flow [2024-06-27 23:14:12,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 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) [2024-06-27 23:14:12,544 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:14:12,544 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:14:12,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 23:14:12,545 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:14:12,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:14:12,545 INFO L85 PathProgramCache]: Analyzing trace with hash 460017875, now seen corresponding path program 3 times [2024-06-27 23:14:12,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:14:12,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41530397] [2024-06-27 23:14:12,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:14:12,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:14:12,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:14:13,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:14:13,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:14:13,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41530397] [2024-06-27 23:14:13,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41530397] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:14:13,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:14:13,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:14:13,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582963445] [2024-06-27 23:14:13,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:14:13,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:14:13,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:14:13,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:14:13,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:14:13,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-27 23:14:13,738 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 92 transitions, 752 flow. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 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) [2024-06-27 23:14:13,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:14:13,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-27 23:14:13,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:14:14,261 INFO L124 PetriNetUnfolderBase]: 1770/2748 cut-off events. [2024-06-27 23:14:14,261 INFO L125 PetriNetUnfolderBase]: For 14645/14645 co-relation queries the response was YES. [2024-06-27 23:14:14,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11066 conditions, 2748 events. 1770/2748 cut-off events. For 14645/14645 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 13547 event pairs, 929 based on Foata normal form. 3/2739 useless extension candidates. Maximal degree in co-relation 11034. Up to 2607 conditions per place. [2024-06-27 23:14:14,273 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 86 selfloop transitions, 15 changer transitions 0/106 dead transitions. [2024-06-27 23:14:14,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 106 transitions, 998 flow [2024-06-27 23:14:14,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:14:14,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:14:14,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 124 transitions. [2024-06-27 23:14:14,275 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4217687074829932 [2024-06-27 23:14:14,275 INFO L175 Difference]: Start difference. First operand has 73 places, 92 transitions, 752 flow. Second operand 7 states and 124 transitions. [2024-06-27 23:14:14,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 106 transitions, 998 flow [2024-06-27 23:14:14,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 106 transitions, 947 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-27 23:14:14,286 INFO L231 Difference]: Finished difference. Result has 76 places, 92 transitions, 741 flow [2024-06-27 23:14:14,287 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=701, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=741, PETRI_PLACES=76, PETRI_TRANSITIONS=92} [2024-06-27 23:14:14,287 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 33 predicate places. [2024-06-27 23:14:14,287 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 92 transitions, 741 flow [2024-06-27 23:14:14,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 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) [2024-06-27 23:14:14,288 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:14:14,288 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:14:14,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 23:14:14,288 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:14:14,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:14:14,288 INFO L85 PathProgramCache]: Analyzing trace with hash -819858975, now seen corresponding path program 1 times [2024-06-27 23:14:14,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:14:14,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432494196] [2024-06-27 23:14:14,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:14:14,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:14:14,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:14:15,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:14:16,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:14:16,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432494196] [2024-06-27 23:14:16,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432494196] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:14:16,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:14:16,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:14:16,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853739110] [2024-06-27 23:14:16,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:14:16,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:14:16,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:14:16,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:14:16,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:14:16,103 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-27 23:14:16,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 92 transitions, 741 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:14:16,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:14:16,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-27 23:14:16,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:14:16,857 INFO L124 PetriNetUnfolderBase]: 1818/2858 cut-off events. [2024-06-27 23:14:16,857 INFO L125 PetriNetUnfolderBase]: For 16697/16707 co-relation queries the response was YES. [2024-06-27 23:14:16,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11541 conditions, 2858 events. 1818/2858 cut-off events. For 16697/16707 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 14330 event pairs, 599 based on Foata normal form. 12/2869 useless extension candidates. Maximal degree in co-relation 11508. Up to 2427 conditions per place. [2024-06-27 23:14:16,870 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 83 selfloop transitions, 51 changer transitions 0/139 dead transitions. [2024-06-27 23:14:16,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 139 transitions, 1304 flow [2024-06-27 23:14:16,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:14:16,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:14:16,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 165 transitions. [2024-06-27 23:14:16,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49107142857142855 [2024-06-27 23:14:16,872 INFO L175 Difference]: Start difference. First operand has 76 places, 92 transitions, 741 flow. Second operand 8 states and 165 transitions. [2024-06-27 23:14:16,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 139 transitions, 1304 flow [2024-06-27 23:14:16,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 139 transitions, 1230 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-27 23:14:16,884 INFO L231 Difference]: Finished difference. Result has 80 places, 106 transitions, 917 flow [2024-06-27 23:14:16,885 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=677, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=917, PETRI_PLACES=80, PETRI_TRANSITIONS=106} [2024-06-27 23:14:16,885 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 37 predicate places. [2024-06-27 23:14:16,885 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 106 transitions, 917 flow [2024-06-27 23:14:16,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:14:16,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:14:16,886 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:14:16,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 23:14:16,886 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:14:16,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:14:16,886 INFO L85 PathProgramCache]: Analyzing trace with hash -543364789, now seen corresponding path program 2 times [2024-06-27 23:14:16,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:14:16,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294069150] [2024-06-27 23:14:16,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:14:16,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:14:16,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:14:18,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:14:18,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:14:18,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294069150] [2024-06-27 23:14:18,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294069150] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:14:18,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:14:18,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:14:18,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698346129] [2024-06-27 23:14:18,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:14:18,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:14:18,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:14:18,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:14:18,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:14:18,291 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:14:18,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 106 transitions, 917 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) [2024-06-27 23:14:18,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:14:18,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:14:18,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:14:18,899 INFO L124 PetriNetUnfolderBase]: 2301/3514 cut-off events. [2024-06-27 23:14:18,899 INFO L125 PetriNetUnfolderBase]: For 25841/25841 co-relation queries the response was YES. [2024-06-27 23:14:18,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15458 conditions, 3514 events. 2301/3514 cut-off events. For 25841/25841 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 17122 event pairs, 1087 based on Foata normal form. 6/3507 useless extension candidates. Maximal degree in co-relation 15422. Up to 3094 conditions per place. [2024-06-27 23:14:18,915 INFO L140 encePairwiseOnDemand]: 28/42 looper letters, 95 selfloop transitions, 51 changer transitions 0/150 dead transitions. [2024-06-27 23:14:18,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 150 transitions, 1523 flow [2024-06-27 23:14:18,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:14:18,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:14:18,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 138 transitions. [2024-06-27 23:14:18,917 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46938775510204084 [2024-06-27 23:14:18,917 INFO L175 Difference]: Start difference. First operand has 80 places, 106 transitions, 917 flow. Second operand 7 states and 138 transitions. [2024-06-27 23:14:18,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 150 transitions, 1523 flow [2024-06-27 23:14:18,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 150 transitions, 1473 flow, removed 18 selfloop flow, removed 2 redundant places. [2024-06-27 23:14:18,939 INFO L231 Difference]: Finished difference. Result has 86 places, 123 transitions, 1201 flow [2024-06-27 23:14:18,939 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=885, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1201, PETRI_PLACES=86, PETRI_TRANSITIONS=123} [2024-06-27 23:14:18,940 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 43 predicate places. [2024-06-27 23:14:18,940 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 123 transitions, 1201 flow [2024-06-27 23:14:18,940 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) [2024-06-27 23:14:18,940 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:14:18,940 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:14:18,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 23:14:18,940 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:14:18,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:14:18,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1375890695, now seen corresponding path program 3 times [2024-06-27 23:14:18,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:14:18,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119512012] [2024-06-27 23:14:18,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:14:18,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:14:18,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:14:19,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:14:19,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:14:19,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119512012] [2024-06-27 23:14:19,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119512012] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:14:19,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:14:19,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:14:19,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473017384] [2024-06-27 23:14:19,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:14:19,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:14:19,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:14:19,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:14:19,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:14:20,069 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-27 23:14:20,070 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 123 transitions, 1201 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:14:20,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:14:20,070 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-27 23:14:20,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:14:20,736 INFO L124 PetriNetUnfolderBase]: 2230/3423 cut-off events. [2024-06-27 23:14:20,736 INFO L125 PetriNetUnfolderBase]: For 32593/32593 co-relation queries the response was YES. [2024-06-27 23:14:20,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16771 conditions, 3423 events. 2230/3423 cut-off events. For 32593/32593 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 17035 event pairs, 1001 based on Foata normal form. 10/3371 useless extension candidates. Maximal degree in co-relation 16731. Up to 3155 conditions per place. [2024-06-27 23:14:20,759 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 124 selfloop transitions, 22 changer transitions 0/153 dead transitions. [2024-06-27 23:14:20,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 153 transitions, 1707 flow [2024-06-27 23:14:20,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:14:20,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:14:20,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 142 transitions. [2024-06-27 23:14:20,760 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4226190476190476 [2024-06-27 23:14:20,760 INFO L175 Difference]: Start difference. First operand has 86 places, 123 transitions, 1201 flow. Second operand 8 states and 142 transitions. [2024-06-27 23:14:20,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 153 transitions, 1707 flow [2024-06-27 23:14:20,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 153 transitions, 1657 flow, removed 16 selfloop flow, removed 2 redundant places. [2024-06-27 23:14:20,794 INFO L231 Difference]: Finished difference. Result has 92 places, 132 transitions, 1363 flow [2024-06-27 23:14:20,794 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1151, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1363, PETRI_PLACES=92, PETRI_TRANSITIONS=132} [2024-06-27 23:14:20,794 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 49 predicate places. [2024-06-27 23:14:20,794 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 132 transitions, 1363 flow [2024-06-27 23:14:20,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:14:20,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:14:20,795 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:14:20,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 23:14:20,795 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:14:20,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:14:20,795 INFO L85 PathProgramCache]: Analyzing trace with hash 489073385, now seen corresponding path program 4 times [2024-06-27 23:14:20,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:14:20,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436662492] [2024-06-27 23:14:20,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:14:20,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:14:20,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:14:22,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:14:22,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:14:22,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436662492] [2024-06-27 23:14:22,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436662492] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:14:22,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:14:22,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:14:22,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666356506] [2024-06-27 23:14:22,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:14:22,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:14:22,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:14:22,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:14:22,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:14:22,081 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:14:22,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 132 transitions, 1363 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) [2024-06-27 23:14:22,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:14:22,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:14:22,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:14:22,682 INFO L124 PetriNetUnfolderBase]: 2327/3549 cut-off events. [2024-06-27 23:14:22,682 INFO L125 PetriNetUnfolderBase]: For 35560/35560 co-relation queries the response was YES. [2024-06-27 23:14:22,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17801 conditions, 3549 events. 2327/3549 cut-off events. For 35560/35560 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 17288 event pairs, 1082 based on Foata normal form. 3/3540 useless extension candidates. Maximal degree in co-relation 17758. Up to 3357 conditions per place. [2024-06-27 23:14:22,703 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 129 selfloop transitions, 27 changer transitions 0/160 dead transitions. [2024-06-27 23:14:22,703 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 160 transitions, 1841 flow [2024-06-27 23:14:22,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:14:22,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:14:22,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 129 transitions. [2024-06-27 23:14:22,704 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4387755102040816 [2024-06-27 23:14:22,704 INFO L175 Difference]: Start difference. First operand has 92 places, 132 transitions, 1363 flow. Second operand 7 states and 129 transitions. [2024-06-27 23:14:22,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 160 transitions, 1841 flow [2024-06-27 23:14:22,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 160 transitions, 1691 flow, removed 50 selfloop flow, removed 7 redundant places. [2024-06-27 23:14:22,741 INFO L231 Difference]: Finished difference. Result has 93 places, 140 transitions, 1391 flow [2024-06-27 23:14:22,741 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1222, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1391, PETRI_PLACES=93, PETRI_TRANSITIONS=140} [2024-06-27 23:14:22,742 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 50 predicate places. [2024-06-27 23:14:22,743 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 140 transitions, 1391 flow [2024-06-27 23:14:22,743 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) [2024-06-27 23:14:22,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:14:22,743 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:14:22,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 23:14:22,743 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:14:22,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:14:22,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1153240174, now seen corresponding path program 1 times [2024-06-27 23:14:22,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:14:22,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340159559] [2024-06-27 23:14:22,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:14:22,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:14:22,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:14:24,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:14:24,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:14:24,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340159559] [2024-06-27 23:14:24,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340159559] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:14:24,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:14:24,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 23:14:24,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503957989] [2024-06-27 23:14:24,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:14:24,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 23:14:24,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:14:24,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 23:14:24,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 23:14:24,079 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:14:24,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 140 transitions, 1391 flow. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:14:24,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:14:24,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:14:24,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:14:24,729 INFO L124 PetriNetUnfolderBase]: 2531/3785 cut-off events. [2024-06-27 23:14:24,729 INFO L125 PetriNetUnfolderBase]: For 47706/47777 co-relation queries the response was YES. [2024-06-27 23:14:24,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19690 conditions, 3785 events. 2531/3785 cut-off events. For 47706/47777 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 18461 event pairs, 1217 based on Foata normal form. 16/3745 useless extension candidates. Maximal degree in co-relation 19647. Up to 3656 conditions per place. [2024-06-27 23:14:24,750 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 124 selfloop transitions, 10 changer transitions 0/150 dead transitions. [2024-06-27 23:14:24,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 150 transitions, 1703 flow [2024-06-27 23:14:24,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 23:14:24,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 23:14:24,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 89 transitions. [2024-06-27 23:14:24,751 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4238095238095238 [2024-06-27 23:14:24,751 INFO L175 Difference]: Start difference. First operand has 93 places, 140 transitions, 1391 flow. Second operand 5 states and 89 transitions. [2024-06-27 23:14:24,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 150 transitions, 1703 flow [2024-06-27 23:14:24,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 150 transitions, 1650 flow, removed 19 selfloop flow, removed 3 redundant places. [2024-06-27 23:14:24,788 INFO L231 Difference]: Finished difference. Result has 95 places, 143 transitions, 1392 flow [2024-06-27 23:14:24,788 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1338, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1392, PETRI_PLACES=95, PETRI_TRANSITIONS=143} [2024-06-27 23:14:24,789 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 52 predicate places. [2024-06-27 23:14:24,789 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 143 transitions, 1392 flow [2024-06-27 23:14:24,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:14:24,789 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:14:24,789 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:14:24,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 23:14:24,790 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:14:24,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:14:24,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1534701292, now seen corresponding path program 1 times [2024-06-27 23:14:24,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:14:24,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077630522] [2024-06-27 23:14:24,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:14:24,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:14:24,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:14:26,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:14:26,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:14:26,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077630522] [2024-06-27 23:14:26,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077630522] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:14:26,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:14:26,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:14:26,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390112868] [2024-06-27 23:14:26,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:14:26,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:14:26,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:14:26,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:14:26,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:14:26,541 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-27 23:14:26,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 143 transitions, 1392 flow. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 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) [2024-06-27 23:14:26,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:14:26,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-27 23:14:26,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:14:27,220 INFO L124 PetriNetUnfolderBase]: 2294/3541 cut-off events. [2024-06-27 23:14:27,220 INFO L125 PetriNetUnfolderBase]: For 47937/47956 co-relation queries the response was YES. [2024-06-27 23:14:27,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19135 conditions, 3541 events. 2294/3541 cut-off events. For 47937/47956 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 17780 event pairs, 718 based on Foata normal form. 19/3554 useless extension candidates. Maximal degree in co-relation 19090. Up to 3054 conditions per place. [2024-06-27 23:14:27,242 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 117 selfloop transitions, 47 changer transitions 0/174 dead transitions. [2024-06-27 23:14:27,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 174 transitions, 1926 flow [2024-06-27 23:14:27,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:14:27,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:14:27,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 149 transitions. [2024-06-27 23:14:27,244 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5068027210884354 [2024-06-27 23:14:27,244 INFO L175 Difference]: Start difference. First operand has 95 places, 143 transitions, 1392 flow. Second operand 7 states and 149 transitions. [2024-06-27 23:14:27,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 174 transitions, 1926 flow [2024-06-27 23:14:27,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 174 transitions, 1894 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-27 23:14:27,278 INFO L231 Difference]: Finished difference. Result has 99 places, 149 transitions, 1532 flow [2024-06-27 23:14:27,278 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1360, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1532, PETRI_PLACES=99, PETRI_TRANSITIONS=149} [2024-06-27 23:14:27,278 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 56 predicate places. [2024-06-27 23:14:27,279 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 149 transitions, 1532 flow [2024-06-27 23:14:27,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 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) [2024-06-27 23:14:27,279 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:14:27,279 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:14:27,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 23:14:27,279 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:14:27,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:14:27,279 INFO L85 PathProgramCache]: Analyzing trace with hash -1534582252, now seen corresponding path program 2 times [2024-06-27 23:14:27,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:14:27,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835907917] [2024-06-27 23:14:27,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:14:27,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:14:27,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:14:28,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:14:28,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:14:28,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835907917] [2024-06-27 23:14:28,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835907917] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:14:28,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:14:28,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:14:28,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829584571] [2024-06-27 23:14:28,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:14:28,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:14:28,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:14:28,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:14:28,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:14:28,969 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-27 23:14:28,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 149 transitions, 1532 flow. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 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) [2024-06-27 23:14:28,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:14:28,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-27 23:14:28,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:14:29,662 INFO L124 PetriNetUnfolderBase]: 2301/3547 cut-off events. [2024-06-27 23:14:29,662 INFO L125 PetriNetUnfolderBase]: For 54614/54633 co-relation queries the response was YES. [2024-06-27 23:14:29,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20026 conditions, 3547 events. 2301/3547 cut-off events. For 54614/54633 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 17759 event pairs, 703 based on Foata normal form. 19/3560 useless extension candidates. Maximal degree in co-relation 19980. Up to 3117 conditions per place. [2024-06-27 23:14:29,679 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 111 selfloop transitions, 49 changer transitions 0/170 dead transitions. [2024-06-27 23:14:29,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 170 transitions, 1929 flow [2024-06-27 23:14:29,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:14:29,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:14:29,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 144 transitions. [2024-06-27 23:14:29,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4897959183673469 [2024-06-27 23:14:29,681 INFO L175 Difference]: Start difference. First operand has 99 places, 149 transitions, 1532 flow. Second operand 7 states and 144 transitions. [2024-06-27 23:14:29,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 170 transitions, 1929 flow [2024-06-27 23:14:29,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 170 transitions, 1842 flow, removed 23 selfloop flow, removed 3 redundant places. [2024-06-27 23:14:29,713 INFO L231 Difference]: Finished difference. Result has 103 places, 149 transitions, 1554 flow [2024-06-27 23:14:29,714 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1445, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1554, PETRI_PLACES=103, PETRI_TRANSITIONS=149} [2024-06-27 23:14:29,714 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 60 predicate places. [2024-06-27 23:14:29,714 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 149 transitions, 1554 flow [2024-06-27 23:14:29,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 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) [2024-06-27 23:14:29,714 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:14:29,714 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:14:29,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 23:14:29,715 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:14:29,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:14:29,715 INFO L85 PathProgramCache]: Analyzing trace with hash 831923579, now seen corresponding path program 1 times [2024-06-27 23:14:29,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:14:29,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143627887] [2024-06-27 23:14:29,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:14:29,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:14:29,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:14:31,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:14:31,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:14:31,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143627887] [2024-06-27 23:14:31,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143627887] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:14:31,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:14:31,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:14:31,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749882519] [2024-06-27 23:14:31,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:14:31,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:14:31,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:14:31,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:14:31,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:14:31,903 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-27 23:14:31,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 149 transitions, 1554 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:14:31,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:14:31,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-27 23:14:31,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:14:33,019 INFO L124 PetriNetUnfolderBase]: 2308/3564 cut-off events. [2024-06-27 23:14:33,019 INFO L125 PetriNetUnfolderBase]: For 60133/60146 co-relation queries the response was YES. [2024-06-27 23:14:33,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20538 conditions, 3564 events. 2308/3564 cut-off events. For 60133/60146 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 17885 event pairs, 705 based on Foata normal form. 16/3570 useless extension candidates. Maximal degree in co-relation 20490. Up to 2924 conditions per place. [2024-06-27 23:14:33,040 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 111 selfloop transitions, 75 changer transitions 0/196 dead transitions. [2024-06-27 23:14:33,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 196 transitions, 2318 flow [2024-06-27 23:14:33,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:14:33,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:14:33,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 182 transitions. [2024-06-27 23:14:33,042 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48148148148148145 [2024-06-27 23:14:33,042 INFO L175 Difference]: Start difference. First operand has 103 places, 149 transitions, 1554 flow. Second operand 9 states and 182 transitions. [2024-06-27 23:14:33,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 196 transitions, 2318 flow [2024-06-27 23:14:33,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 196 transitions, 2204 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-27 23:14:33,082 INFO L231 Difference]: Finished difference. Result has 106 places, 154 transitions, 1669 flow [2024-06-27 23:14:33,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1442, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1669, PETRI_PLACES=106, PETRI_TRANSITIONS=154} [2024-06-27 23:14:33,082 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 63 predicate places. [2024-06-27 23:14:33,083 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 154 transitions, 1669 flow [2024-06-27 23:14:33,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:14:33,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:14:33,083 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:14:33,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 23:14:33,083 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:14:33,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:14:33,084 INFO L85 PathProgramCache]: Analyzing trace with hash 354949503, now seen corresponding path program 2 times [2024-06-27 23:14:33,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:14:33,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328663667] [2024-06-27 23:14:33,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:14:33,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:14:33,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:14:34,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:14:34,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:14:34,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328663667] [2024-06-27 23:14:34,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328663667] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:14:34,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:14:34,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:14:34,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994487064] [2024-06-27 23:14:34,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:14:34,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:14:34,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:14:34,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:14:34,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:14:34,833 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-27 23:14:34,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 154 transitions, 1669 flow. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 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) [2024-06-27 23:14:34,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:14:34,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-27 23:14:34,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:14:35,707 INFO L124 PetriNetUnfolderBase]: 2378/3652 cut-off events. [2024-06-27 23:14:35,707 INFO L125 PetriNetUnfolderBase]: For 67860/67872 co-relation queries the response was YES. [2024-06-27 23:14:35,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21748 conditions, 3652 events. 2378/3652 cut-off events. For 67860/67872 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 18397 event pairs, 725 based on Foata normal form. 16/3625 useless extension candidates. Maximal degree in co-relation 21699. Up to 2984 conditions per place. [2024-06-27 23:14:35,730 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 105 selfloop transitions, 95 changer transitions 0/210 dead transitions. [2024-06-27 23:14:35,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 210 transitions, 2651 flow [2024-06-27 23:14:35,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:14:35,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:14:35,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 166 transitions. [2024-06-27 23:14:35,732 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49404761904761907 [2024-06-27 23:14:35,732 INFO L175 Difference]: Start difference. First operand has 106 places, 154 transitions, 1669 flow. Second operand 8 states and 166 transitions. [2024-06-27 23:14:35,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 210 transitions, 2651 flow [2024-06-27 23:14:35,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 210 transitions, 2433 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-27 23:14:35,781 INFO L231 Difference]: Finished difference. Result has 109 places, 179 transitions, 2078 flow [2024-06-27 23:14:35,781 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1483, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2078, PETRI_PLACES=109, PETRI_TRANSITIONS=179} [2024-06-27 23:14:35,781 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 66 predicate places. [2024-06-27 23:14:35,782 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 179 transitions, 2078 flow [2024-06-27 23:14:35,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 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) [2024-06-27 23:14:35,782 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:14:35,782 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:14:35,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 23:14:35,782 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:14:35,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:14:35,783 INFO L85 PathProgramCache]: Analyzing trace with hash 335556267, now seen corresponding path program 3 times [2024-06-27 23:14:35,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:14:35,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804714508] [2024-06-27 23:14:35,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:14:35,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:14:35,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:14:37,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:14:37,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:14:37,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804714508] [2024-06-27 23:14:37,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804714508] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:14:37,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:14:37,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:14:37,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92589912] [2024-06-27 23:14:37,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:14:37,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:14:37,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:14:37,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:14:37,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:14:37,148 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:14:37,149 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 179 transitions, 2078 flow. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:14:37,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:14:37,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:14:37,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:14:37,856 INFO L124 PetriNetUnfolderBase]: 2566/3891 cut-off events. [2024-06-27 23:14:37,856 INFO L125 PetriNetUnfolderBase]: For 78027/78045 co-relation queries the response was YES. [2024-06-27 23:14:37,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23754 conditions, 3891 events. 2566/3891 cut-off events. For 78027/78045 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 19147 event pairs, 1119 based on Foata normal form. 3/3874 useless extension candidates. Maximal degree in co-relation 23702. Up to 3412 conditions per place. [2024-06-27 23:14:37,882 INFO L140 encePairwiseOnDemand]: 28/42 looper letters, 129 selfloop transitions, 82 changer transitions 0/216 dead transitions. [2024-06-27 23:14:37,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 216 transitions, 2828 flow [2024-06-27 23:14:37,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:14:37,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:14:37,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 141 transitions. [2024-06-27 23:14:37,884 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47959183673469385 [2024-06-27 23:14:37,884 INFO L175 Difference]: Start difference. First operand has 109 places, 179 transitions, 2078 flow. Second operand 7 states and 141 transitions. [2024-06-27 23:14:37,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 216 transitions, 2828 flow [2024-06-27 23:14:37,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 216 transitions, 2667 flow, removed 20 selfloop flow, removed 4 redundant places. [2024-06-27 23:14:37,948 INFO L231 Difference]: Finished difference. Result has 113 places, 187 transitions, 2268 flow [2024-06-27 23:14:37,949 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1933, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2268, PETRI_PLACES=113, PETRI_TRANSITIONS=187} [2024-06-27 23:14:37,949 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 70 predicate places. [2024-06-27 23:14:37,949 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 187 transitions, 2268 flow [2024-06-27 23:14:37,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:14:37,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:14:37,949 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:14:37,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 23:14:37,949 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:14:37,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:14:37,950 INFO L85 PathProgramCache]: Analyzing trace with hash 335562064, now seen corresponding path program 1 times [2024-06-27 23:14:37,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:14:37,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078521746] [2024-06-27 23:14:37,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:14:37,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:14:37,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:14:39,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:14:39,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:14:39,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078521746] [2024-06-27 23:14:39,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078521746] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:14:39,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:14:39,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:14:39,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75538639] [2024-06-27 23:14:39,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:14:39,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:14:39,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:14:39,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:14:39,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:14:39,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:14:39,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 187 transitions, 2268 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:14:39,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:14:39,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:14:39,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:14:40,187 INFO L124 PetriNetUnfolderBase]: 2630/3985 cut-off events. [2024-06-27 23:14:40,187 INFO L125 PetriNetUnfolderBase]: For 86303/86321 co-relation queries the response was YES. [2024-06-27 23:14:40,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24770 conditions, 3985 events. 2630/3985 cut-off events. For 86303/86321 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 19706 event pairs, 1125 based on Foata normal form. 6/3971 useless extension candidates. Maximal degree in co-relation 24716. Up to 3398 conditions per place. [2024-06-27 23:14:40,216 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 130 selfloop transitions, 97 changer transitions 0/232 dead transitions. [2024-06-27 23:14:40,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 232 transitions, 3116 flow [2024-06-27 23:14:40,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:14:40,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:14:40,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 154 transitions. [2024-06-27 23:14:40,218 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-27 23:14:40,218 INFO L175 Difference]: Start difference. First operand has 113 places, 187 transitions, 2268 flow. Second operand 8 states and 154 transitions. [2024-06-27 23:14:40,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 232 transitions, 3116 flow [2024-06-27 23:14:40,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 232 transitions, 2984 flow, removed 20 selfloop flow, removed 4 redundant places. [2024-06-27 23:14:40,302 INFO L231 Difference]: Finished difference. Result has 118 places, 205 transitions, 2630 flow [2024-06-27 23:14:40,302 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2136, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2630, PETRI_PLACES=118, PETRI_TRANSITIONS=205} [2024-06-27 23:14:40,303 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 75 predicate places. [2024-06-27 23:14:40,303 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 205 transitions, 2630 flow [2024-06-27 23:14:40,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:14:40,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:14:40,303 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:14:40,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 23:14:40,303 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:14:40,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:14:40,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1194301549, now seen corresponding path program 4 times [2024-06-27 23:14:40,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:14:40,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39264706] [2024-06-27 23:14:40,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:14:40,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:14:40,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:14:41,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:14:41,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:14:41,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39264706] [2024-06-27 23:14:41,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39264706] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:14:41,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:14:41,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:14:41,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146905679] [2024-06-27 23:14:41,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:14:41,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:14:41,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:14:41,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:14:41,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:14:41,813 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:14:41,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 205 transitions, 2630 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:14:41,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:14:41,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:14:41,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:14:42,778 INFO L124 PetriNetUnfolderBase]: 2655/4027 cut-off events. [2024-06-27 23:14:42,779 INFO L125 PetriNetUnfolderBase]: For 95831/95849 co-relation queries the response was YES. [2024-06-27 23:14:42,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25913 conditions, 4027 events. 2655/4027 cut-off events. For 95831/95849 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 19944 event pairs, 1120 based on Foata normal form. 4/4011 useless extension candidates. Maximal degree in co-relation 25858. Up to 3532 conditions per place. [2024-06-27 23:14:42,805 INFO L140 encePairwiseOnDemand]: 28/42 looper letters, 155 selfloop transitions, 82 changer transitions 0/242 dead transitions. [2024-06-27 23:14:42,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 242 transitions, 3462 flow [2024-06-27 23:14:42,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:14:42,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:14:42,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 154 transitions. [2024-06-27 23:14:42,807 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-27 23:14:42,807 INFO L175 Difference]: Start difference. First operand has 118 places, 205 transitions, 2630 flow. Second operand 8 states and 154 transitions. [2024-06-27 23:14:42,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 242 transitions, 3462 flow [2024-06-27 23:14:42,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 242 transitions, 3266 flow, removed 35 selfloop flow, removed 5 redundant places. [2024-06-27 23:14:42,886 INFO L231 Difference]: Finished difference. Result has 121 places, 212 transitions, 2753 flow [2024-06-27 23:14:42,886 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2443, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2753, PETRI_PLACES=121, PETRI_TRANSITIONS=212} [2024-06-27 23:14:42,886 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 78 predicate places. [2024-06-27 23:14:42,887 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 212 transitions, 2753 flow [2024-06-27 23:14:42,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:14:42,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:14:42,887 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:14:42,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 23:14:42,887 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:14:42,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:14:42,887 INFO L85 PathProgramCache]: Analyzing trace with hash -297060293, now seen corresponding path program 5 times [2024-06-27 23:14:42,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:14:42,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449353537] [2024-06-27 23:14:42,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:14:42,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:14:42,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:14:44,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:14:44,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:14:44,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449353537] [2024-06-27 23:14:44,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449353537] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:14:44,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:14:44,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:14:44,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080527911] [2024-06-27 23:14:44,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:14:44,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:14:44,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:14:44,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:14:44,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:14:44,190 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:14:44,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 212 transitions, 2753 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:14:44,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:14:44,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:14:44,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:14:44,971 INFO L124 PetriNetUnfolderBase]: 2664/4030 cut-off events. [2024-06-27 23:14:44,971 INFO L125 PetriNetUnfolderBase]: For 103489/103507 co-relation queries the response was YES. [2024-06-27 23:14:44,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26102 conditions, 4030 events. 2664/4030 cut-off events. For 103489/103507 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 19834 event pairs, 1136 based on Foata normal form. 10/4021 useless extension candidates. Maximal degree in co-relation 26046. Up to 3764 conditions per place. [2024-06-27 23:14:45,003 INFO L140 encePairwiseOnDemand]: 28/42 looper letters, 211 selfloop transitions, 31 changer transitions 0/247 dead transitions. [2024-06-27 23:14:45,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 247 transitions, 3508 flow [2024-06-27 23:14:45,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:14:45,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:14:45,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-06-27 23:14:45,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43452380952380953 [2024-06-27 23:14:45,005 INFO L175 Difference]: Start difference. First operand has 121 places, 212 transitions, 2753 flow. Second operand 8 states and 146 transitions. [2024-06-27 23:14:45,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 247 transitions, 3508 flow [2024-06-27 23:14:45,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 247 transitions, 3276 flow, removed 27 selfloop flow, removed 6 redundant places. [2024-06-27 23:14:45,164 INFO L231 Difference]: Finished difference. Result has 123 places, 219 transitions, 2758 flow [2024-06-27 23:14:45,164 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2535, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2758, PETRI_PLACES=123, PETRI_TRANSITIONS=219} [2024-06-27 23:14:45,165 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 80 predicate places. [2024-06-27 23:14:45,165 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 219 transitions, 2758 flow [2024-06-27 23:14:45,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:14:45,165 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:14:45,165 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:14:45,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 23:14:45,165 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:14:45,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:14:45,166 INFO L85 PathProgramCache]: Analyzing trace with hash 1531671671, now seen corresponding path program 6 times [2024-06-27 23:14:45,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:14:45,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045898596] [2024-06-27 23:14:45,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:14:45,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:14:45,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:14:46,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:14:46,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:14:46,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045898596] [2024-06-27 23:14:46,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045898596] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:14:46,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:14:46,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:14:46,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257910273] [2024-06-27 23:14:46,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:14:46,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:14:46,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:14:46,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:14:46,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:14:46,556 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:14:46,557 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 219 transitions, 2758 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:14:46,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:14:46,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:14:46,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:14:47,403 INFO L124 PetriNetUnfolderBase]: 2653/4019 cut-off events. [2024-06-27 23:14:47,403 INFO L125 PetriNetUnfolderBase]: For 107649/107667 co-relation queries the response was YES. [2024-06-27 23:14:47,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26007 conditions, 4019 events. 2653/4019 cut-off events. For 107649/107667 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 19825 event pairs, 1130 based on Foata normal form. 4/4004 useless extension candidates. Maximal degree in co-relation 25950. Up to 3760 conditions per place. [2024-06-27 23:14:47,435 INFO L140 encePairwiseOnDemand]: 28/42 looper letters, 201 selfloop transitions, 38 changer transitions 0/244 dead transitions. [2024-06-27 23:14:47,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 244 transitions, 3344 flow [2024-06-27 23:14:47,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:14:47,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:14:47,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-06-27 23:14:47,436 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43452380952380953 [2024-06-27 23:14:47,436 INFO L175 Difference]: Start difference. First operand has 123 places, 219 transitions, 2758 flow. Second operand 8 states and 146 transitions. [2024-06-27 23:14:47,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 244 transitions, 3344 flow [2024-06-27 23:14:47,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 244 transitions, 3188 flow, removed 58 selfloop flow, removed 5 redundant places. [2024-06-27 23:14:47,560 INFO L231 Difference]: Finished difference. Result has 126 places, 219 transitions, 2691 flow [2024-06-27 23:14:47,560 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2602, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2691, PETRI_PLACES=126, PETRI_TRANSITIONS=219} [2024-06-27 23:14:47,560 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 83 predicate places. [2024-06-27 23:14:47,560 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 219 transitions, 2691 flow [2024-06-27 23:14:47,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:14:47,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:14:47,561 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:14:47,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 23:14:47,561 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:14:47,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:14:47,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1531671888, now seen corresponding path program 2 times [2024-06-27 23:14:47,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:14:47,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583041791] [2024-06-27 23:14:47,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:14:47,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:14:47,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:14:48,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:14:48,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:14:48,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583041791] [2024-06-27 23:14:48,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583041791] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:14:48,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:14:48,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:14:48,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818884888] [2024-06-27 23:14:48,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:14:48,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:14:48,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:14:48,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:14:48,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:14:48,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:14:48,934 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 219 transitions, 2691 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:14:48,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:14:48,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:14:48,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:14:49,812 INFO L124 PetriNetUnfolderBase]: 2645/4008 cut-off events. [2024-06-27 23:14:49,812 INFO L125 PetriNetUnfolderBase]: For 113535/113553 co-relation queries the response was YES. [2024-06-27 23:14:49,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26052 conditions, 4008 events. 2645/4008 cut-off events. For 113535/113553 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 19825 event pairs, 1133 based on Foata normal form. 3/3992 useless extension candidates. Maximal degree in co-relation 25994. Up to 3749 conditions per place. [2024-06-27 23:14:49,844 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 205 selfloop transitions, 41 changer transitions 0/251 dead transitions. [2024-06-27 23:14:49,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 251 transitions, 3398 flow [2024-06-27 23:14:49,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:14:49,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:14:49,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 145 transitions. [2024-06-27 23:14:49,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43154761904761907 [2024-06-27 23:14:49,845 INFO L175 Difference]: Start difference. First operand has 126 places, 219 transitions, 2691 flow. Second operand 8 states and 145 transitions. [2024-06-27 23:14:49,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 251 transitions, 3398 flow [2024-06-27 23:14:49,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 251 transitions, 3252 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-27 23:14:49,954 INFO L231 Difference]: Finished difference. Result has 128 places, 227 transitions, 2783 flow [2024-06-27 23:14:49,955 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2545, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2783, PETRI_PLACES=128, PETRI_TRANSITIONS=227} [2024-06-27 23:14:49,955 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 85 predicate places. [2024-06-27 23:14:49,955 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 227 transitions, 2783 flow [2024-06-27 23:14:49,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:14:49,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:14:49,955 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:14:49,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 23:14:49,956 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:14:49,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:14:49,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1539300368, now seen corresponding path program 1 times [2024-06-27 23:14:49,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:14:49,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175211449] [2024-06-27 23:14:49,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:14:49,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:14:49,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:14:51,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:14:51,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:14:51,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175211449] [2024-06-27 23:14:51,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175211449] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:14:51,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:14:51,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:14:51,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324131806] [2024-06-27 23:14:51,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:14:51,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:14:51,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:14:51,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:14:51,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:14:51,939 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:14:51,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 227 transitions, 2783 flow. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:14:51,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:14:51,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:14:51,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:14:52,902 INFO L124 PetriNetUnfolderBase]: 2645/4004 cut-off events. [2024-06-27 23:14:52,902 INFO L125 PetriNetUnfolderBase]: For 120937/120955 co-relation queries the response was YES. [2024-06-27 23:14:52,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26461 conditions, 4004 events. 2645/4004 cut-off events. For 120937/120955 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 19756 event pairs, 1124 based on Foata normal form. 4/3989 useless extension candidates. Maximal degree in co-relation 26401. Up to 3791 conditions per place. [2024-06-27 23:14:52,936 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 230 selfloop transitions, 21 changer transitions 0/256 dead transitions. [2024-06-27 23:14:52,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 256 transitions, 3438 flow [2024-06-27 23:14:52,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:14:52,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:14:52,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 152 transitions. [2024-06-27 23:14:52,938 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4021164021164021 [2024-06-27 23:14:52,938 INFO L175 Difference]: Start difference. First operand has 128 places, 227 transitions, 2783 flow. Second operand 9 states and 152 transitions. [2024-06-27 23:14:52,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 256 transitions, 3438 flow [2024-06-27 23:14:53,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 256 transitions, 3350 flow, removed 32 selfloop flow, removed 4 redundant places. [2024-06-27 23:14:53,046 INFO L231 Difference]: Finished difference. Result has 134 places, 233 transitions, 2832 flow [2024-06-27 23:14:53,046 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2697, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2832, PETRI_PLACES=134, PETRI_TRANSITIONS=233} [2024-06-27 23:14:53,046 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 91 predicate places. [2024-06-27 23:14:53,046 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 233 transitions, 2832 flow [2024-06-27 23:14:53,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:14:53,046 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:14:53,046 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:14:53,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 23:14:53,047 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:14:53,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:14:53,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1373725081, now seen corresponding path program 1 times [2024-06-27 23:14:53,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:14:53,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256764545] [2024-06-27 23:14:53,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:14:53,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:14:53,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:14:54,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:14:54,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:14:54,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256764545] [2024-06-27 23:14:54,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256764545] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:14:54,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:14:54,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:14:54,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767021067] [2024-06-27 23:14:54,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:14:54,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:14:54,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:14:54,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:14:54,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:14:54,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:14:54,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 233 transitions, 2832 flow. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:14:54,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:14:54,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:14:54,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:14:55,603 INFO L124 PetriNetUnfolderBase]: 2676/4022 cut-off events. [2024-06-27 23:14:55,604 INFO L125 PetriNetUnfolderBase]: For 129553/129600 co-relation queries the response was YES. [2024-06-27 23:14:55,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27030 conditions, 4022 events. 2676/4022 cut-off events. For 129553/129600 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 19647 event pairs, 1199 based on Foata normal form. 15/4004 useless extension candidates. Maximal degree in co-relation 26967. Up to 3872 conditions per place. [2024-06-27 23:14:55,634 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 214 selfloop transitions, 13 changer transitions 0/246 dead transitions. [2024-06-27 23:14:55,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 246 transitions, 3344 flow [2024-06-27 23:14:55,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:14:55,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:14:55,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 104 transitions. [2024-06-27 23:14:55,635 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4126984126984127 [2024-06-27 23:14:55,635 INFO L175 Difference]: Start difference. First operand has 134 places, 233 transitions, 2832 flow. Second operand 6 states and 104 transitions. [2024-06-27 23:14:55,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 246 transitions, 3344 flow [2024-06-27 23:14:55,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 246 transitions, 3263 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-06-27 23:14:55,735 INFO L231 Difference]: Finished difference. Result has 134 places, 236 transitions, 2817 flow [2024-06-27 23:14:55,735 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2751, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2817, PETRI_PLACES=134, PETRI_TRANSITIONS=236} [2024-06-27 23:14:55,735 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 91 predicate places. [2024-06-27 23:14:55,735 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 236 transitions, 2817 flow [2024-06-27 23:14:55,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:14:55,736 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:14:55,736 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:14:55,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 23:14:55,736 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:14:55,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:14:55,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1899198350, now seen corresponding path program 1 times [2024-06-27 23:14:55,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:14:55,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037207289] [2024-06-27 23:14:55,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:14:55,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:14:55,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:14:57,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:14:57,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:14:57,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037207289] [2024-06-27 23:14:57,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037207289] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:14:57,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:14:57,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:14:57,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515224728] [2024-06-27 23:14:57,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:14:57,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:14:57,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:14:57,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:14:57,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:14:57,961 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-27 23:14:57,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 236 transitions, 2817 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 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) [2024-06-27 23:14:57,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:14:57,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-27 23:14:57,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:14:58,816 INFO L124 PetriNetUnfolderBase]: 2472/3826 cut-off events. [2024-06-27 23:14:58,817 INFO L125 PetriNetUnfolderBase]: For 127675/127686 co-relation queries the response was YES. [2024-06-27 23:14:58,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26402 conditions, 3826 events. 2472/3826 cut-off events. For 127675/127686 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 19370 event pairs, 531 based on Foata normal form. 13/3839 useless extension candidates. Maximal degree in co-relation 26339. Up to 3164 conditions per place. [2024-06-27 23:14:58,846 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 199 selfloop transitions, 58 changer transitions 0/271 dead transitions. [2024-06-27 23:14:58,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 271 transitions, 3615 flow [2024-06-27 23:14:58,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:14:58,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:14:58,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 168 transitions. [2024-06-27 23:14:58,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 23:14:58,848 INFO L175 Difference]: Start difference. First operand has 134 places, 236 transitions, 2817 flow. Second operand 8 states and 168 transitions. [2024-06-27 23:14:58,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 271 transitions, 3615 flow [2024-06-27 23:14:58,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 271 transitions, 3571 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-27 23:14:58,983 INFO L231 Difference]: Finished difference. Result has 138 places, 240 transitions, 2968 flow [2024-06-27 23:14:58,983 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2773, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2968, PETRI_PLACES=138, PETRI_TRANSITIONS=240} [2024-06-27 23:14:58,984 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 95 predicate places. [2024-06-27 23:14:58,984 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 240 transitions, 2968 flow [2024-06-27 23:14:58,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 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) [2024-06-27 23:14:58,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:14:58,984 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:14:58,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 23:14:58,985 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:14:58,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:14:58,985 INFO L85 PathProgramCache]: Analyzing trace with hash 1594153586, now seen corresponding path program 2 times [2024-06-27 23:14:58,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:14:58,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494760681] [2024-06-27 23:14:58,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:14:58,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:14:59,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:15:00,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:15:00,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:15:00,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494760681] [2024-06-27 23:15:00,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494760681] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:15:00,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:15:00,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:15:00,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81953540] [2024-06-27 23:15:00,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:15:00,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:15:00,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:15:00,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:15:00,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:15:01,066 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-27 23:15:01,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 240 transitions, 2968 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 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) [2024-06-27 23:15:01,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:15:01,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-27 23:15:01,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:15:01,866 INFO L124 PetriNetUnfolderBase]: 2493/3857 cut-off events. [2024-06-27 23:15:01,866 INFO L125 PetriNetUnfolderBase]: For 137424/137435 co-relation queries the response was YES. [2024-06-27 23:15:01,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27238 conditions, 3857 events. 2493/3857 cut-off events. For 137424/137435 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 19560 event pairs, 673 based on Foata normal form. 13/3870 useless extension candidates. Maximal degree in co-relation 27174. Up to 3277 conditions per place. [2024-06-27 23:15:01,896 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 202 selfloop transitions, 54 changer transitions 0/270 dead transitions. [2024-06-27 23:15:01,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 270 transitions, 3624 flow [2024-06-27 23:15:01,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:15:01,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:15:01,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 165 transitions. [2024-06-27 23:15:01,897 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49107142857142855 [2024-06-27 23:15:01,897 INFO L175 Difference]: Start difference. First operand has 138 places, 240 transitions, 2968 flow. Second operand 8 states and 165 transitions. [2024-06-27 23:15:01,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 270 transitions, 3624 flow [2024-06-27 23:15:02,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 270 transitions, 3505 flow, removed 27 selfloop flow, removed 4 redundant places. [2024-06-27 23:15:02,027 INFO L231 Difference]: Finished difference. Result has 142 places, 242 transitions, 3006 flow [2024-06-27 23:15:02,027 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2861, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3006, PETRI_PLACES=142, PETRI_TRANSITIONS=242} [2024-06-27 23:15:02,027 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 99 predicate places. [2024-06-27 23:15:02,028 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 242 transitions, 3006 flow [2024-06-27 23:15:02,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 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) [2024-06-27 23:15:02,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:15:02,028 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:15:02,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 23:15:02,028 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:15:02,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:15:02,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1594153710, now seen corresponding path program 1 times [2024-06-27 23:15:02,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:15:02,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334751356] [2024-06-27 23:15:02,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:15:02,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:15:02,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:15:03,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:15:03,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:15:03,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334751356] [2024-06-27 23:15:03,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334751356] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:15:03,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:15:03,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:15:03,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364387094] [2024-06-27 23:15:03,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:15:03,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:15:03,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:15:03,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:15:03,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:15:04,027 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-27 23:15:04,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 242 transitions, 3006 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 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) [2024-06-27 23:15:04,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:15:04,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-27 23:15:04,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:15:04,899 INFO L124 PetriNetUnfolderBase]: 2630/4024 cut-off events. [2024-06-27 23:15:04,899 INFO L125 PetriNetUnfolderBase]: For 154319/154328 co-relation queries the response was YES. [2024-06-27 23:15:04,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28952 conditions, 4024 events. 2630/4024 cut-off events. For 154319/154328 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 20310 event pairs, 694 based on Foata normal form. 13/3997 useless extension candidates. Maximal degree in co-relation 28886. Up to 2877 conditions per place. [2024-06-27 23:15:04,928 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 149 selfloop transitions, 122 changer transitions 0/285 dead transitions. [2024-06-27 23:15:04,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 285 transitions, 4034 flow [2024-06-27 23:15:04,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:15:04,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:15:04,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 175 transitions. [2024-06-27 23:15:04,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5208333333333334 [2024-06-27 23:15:04,929 INFO L175 Difference]: Start difference. First operand has 142 places, 242 transitions, 3006 flow. Second operand 8 states and 175 transitions. [2024-06-27 23:15:04,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 285 transitions, 4034 flow [2024-06-27 23:15:05,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 285 transitions, 3911 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-27 23:15:05,056 INFO L231 Difference]: Finished difference. Result has 145 places, 251 transitions, 3366 flow [2024-06-27 23:15:05,057 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2883, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3366, PETRI_PLACES=145, PETRI_TRANSITIONS=251} [2024-06-27 23:15:05,057 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 102 predicate places. [2024-06-27 23:15:05,057 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 251 transitions, 3366 flow [2024-06-27 23:15:05,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 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) [2024-06-27 23:15:05,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:15:05,057 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:15:05,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 23:15:05,057 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:15:05,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:15:05,058 INFO L85 PathProgramCache]: Analyzing trace with hash -327403598, now seen corresponding path program 2 times [2024-06-27 23:15:05,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:15:05,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569077175] [2024-06-27 23:15:05,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:15:05,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:15:05,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:15:06,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:15:06,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:15:06,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569077175] [2024-06-27 23:15:06,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569077175] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:15:06,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:15:06,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:15:06,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025278782] [2024-06-27 23:15:06,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:15:06,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:15:06,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:15:06,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:15:06,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:15:06,695 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-27 23:15:06,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 251 transitions, 3366 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 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) [2024-06-27 23:15:06,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:15:06,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-27 23:15:06,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:15:07,649 INFO L124 PetriNetUnfolderBase]: 2650/4079 cut-off events. [2024-06-27 23:15:07,649 INFO L125 PetriNetUnfolderBase]: For 165018/165030 co-relation queries the response was YES. [2024-06-27 23:15:07,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30602 conditions, 4079 events. 2650/4079 cut-off events. For 165018/165030 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 20761 event pairs, 650 based on Foata normal form. 15/4090 useless extension candidates. Maximal degree in co-relation 30534. Up to 3081 conditions per place. [2024-06-27 23:15:07,685 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 136 selfloop transitions, 143 changer transitions 0/293 dead transitions. [2024-06-27 23:15:07,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 293 transitions, 4465 flow [2024-06-27 23:15:07,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:15:07,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:15:07,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 173 transitions. [2024-06-27 23:15:07,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5148809523809523 [2024-06-27 23:15:07,686 INFO L175 Difference]: Start difference. First operand has 145 places, 251 transitions, 3366 flow. Second operand 8 states and 173 transitions. [2024-06-27 23:15:07,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 293 transitions, 4465 flow [2024-06-27 23:15:07,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 293 transitions, 4416 flow, removed 16 selfloop flow, removed 3 redundant places. [2024-06-27 23:15:07,822 INFO L231 Difference]: Finished difference. Result has 152 places, 261 transitions, 3929 flow [2024-06-27 23:15:07,823 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3319, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3929, PETRI_PLACES=152, PETRI_TRANSITIONS=261} [2024-06-27 23:15:07,823 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 109 predicate places. [2024-06-27 23:15:07,823 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 261 transitions, 3929 flow [2024-06-27 23:15:07,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 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) [2024-06-27 23:15:07,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:15:07,823 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:15:07,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 23:15:07,824 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:15:07,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:15:07,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1214882138, now seen corresponding path program 3 times [2024-06-27 23:15:07,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:15:07,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110383739] [2024-06-27 23:15:07,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:15:07,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:15:07,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:15:09,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:15:09,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:15:09,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110383739] [2024-06-27 23:15:09,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110383739] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:15:09,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:15:09,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:15:09,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616825474] [2024-06-27 23:15:09,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:15:09,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:15:09,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:15:09,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:15:09,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:15:09,548 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-27 23:15:09,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 261 transitions, 3929 flow. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:15:09,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:15:09,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-27 23:15:09,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:15:10,498 INFO L124 PetriNetUnfolderBase]: 2675/4119 cut-off events. [2024-06-27 23:15:10,498 INFO L125 PetriNetUnfolderBase]: For 181404/181416 co-relation queries the response was YES. [2024-06-27 23:15:10,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32658 conditions, 4119 events. 2675/4119 cut-off events. For 181404/181416 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 20983 event pairs, 650 based on Foata normal form. 15/4130 useless extension candidates. Maximal degree in co-relation 32586. Up to 3077 conditions per place. [2024-06-27 23:15:10,536 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 138 selfloop transitions, 145 changer transitions 0/297 dead transitions. [2024-06-27 23:15:10,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 297 transitions, 4935 flow [2024-06-27 23:15:10,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:15:10,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:15:10,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 167 transitions. [2024-06-27 23:15:10,538 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49702380952380953 [2024-06-27 23:15:10,538 INFO L175 Difference]: Start difference. First operand has 152 places, 261 transitions, 3929 flow. Second operand 8 states and 167 transitions. [2024-06-27 23:15:10,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 297 transitions, 4935 flow [2024-06-27 23:15:10,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 297 transitions, 4756 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-06-27 23:15:10,738 INFO L231 Difference]: Finished difference. Result has 156 places, 264 transitions, 4104 flow [2024-06-27 23:15:10,738 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3750, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4104, PETRI_PLACES=156, PETRI_TRANSITIONS=264} [2024-06-27 23:15:10,738 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 113 predicate places. [2024-06-27 23:15:10,738 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 264 transitions, 4104 flow [2024-06-27 23:15:10,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:15:10,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:15:10,739 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:15:10,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 23:15:10,739 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:15:10,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:15:10,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1214882262, now seen corresponding path program 3 times [2024-06-27 23:15:10,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:15:10,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248387451] [2024-06-27 23:15:10,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:15:10,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:15:10,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:15:12,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:15:12,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:15:12,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248387451] [2024-06-27 23:15:12,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248387451] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:15:12,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:15:12,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:15:12,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452928263] [2024-06-27 23:15:12,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:15:12,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:15:12,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:15:12,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:15:12,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:15:12,587 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-27 23:15:12,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 264 transitions, 4104 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 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) [2024-06-27 23:15:12,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:15:12,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-27 23:15:12,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:15:13,529 INFO L124 PetriNetUnfolderBase]: 2659/4096 cut-off events. [2024-06-27 23:15:13,529 INFO L125 PetriNetUnfolderBase]: For 189900/189913 co-relation queries the response was YES. [2024-06-27 23:15:13,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32768 conditions, 4096 events. 2659/4096 cut-off events. For 189900/189913 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 20809 event pairs, 624 based on Foata normal form. 15/4111 useless extension candidates. Maximal degree in co-relation 32695. Up to 3565 conditions per place. [2024-06-27 23:15:13,565 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 217 selfloop transitions, 59 changer transitions 0/290 dead transitions. [2024-06-27 23:15:13,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 290 transitions, 4761 flow [2024-06-27 23:15:13,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:15:13,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:15:13,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 162 transitions. [2024-06-27 23:15:13,567 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48214285714285715 [2024-06-27 23:15:13,567 INFO L175 Difference]: Start difference. First operand has 156 places, 264 transitions, 4104 flow. Second operand 8 states and 162 transitions. [2024-06-27 23:15:13,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 290 transitions, 4761 flow [2024-06-27 23:15:13,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 290 transitions, 4532 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-06-27 23:15:13,757 INFO L231 Difference]: Finished difference. Result has 159 places, 264 transitions, 4000 flow [2024-06-27 23:15:13,758 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3875, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4000, PETRI_PLACES=159, PETRI_TRANSITIONS=264} [2024-06-27 23:15:13,758 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 116 predicate places. [2024-06-27 23:15:13,758 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 264 transitions, 4000 flow [2024-06-27 23:15:13,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 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) [2024-06-27 23:15:13,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:15:13,759 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:15:13,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 23:15:13,759 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:15:13,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:15:13,759 INFO L85 PathProgramCache]: Analyzing trace with hash -1881470792, now seen corresponding path program 4 times [2024-06-27 23:15:13,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:15:13,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721989826] [2024-06-27 23:15:13,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:15:13,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:15:13,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:15:15,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:15:15,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:15:15,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721989826] [2024-06-27 23:15:15,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721989826] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:15:15,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:15:15,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:15:15,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684359905] [2024-06-27 23:15:15,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:15:15,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:15:15,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:15:15,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:15:15,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:15:15,719 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-27 23:15:15,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 264 transitions, 4000 flow. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:15:15,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:15:15,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-27 23:15:15,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:15:16,709 INFO L124 PetriNetUnfolderBase]: 2738/4195 cut-off events. [2024-06-27 23:15:16,709 INFO L125 PetriNetUnfolderBase]: For 207818/207829 co-relation queries the response was YES. [2024-06-27 23:15:16,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33659 conditions, 4195 events. 2738/4195 cut-off events. For 207818/207829 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 21541 event pairs, 776 based on Foata normal form. 15/4163 useless extension candidates. Maximal degree in co-relation 33585. Up to 3074 conditions per place. [2024-06-27 23:15:16,745 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 139 selfloop transitions, 157 changer transitions 0/310 dead transitions. [2024-06-27 23:15:16,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 310 transitions, 5261 flow [2024-06-27 23:15:16,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:15:16,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:15:16,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 175 transitions. [2024-06-27 23:15:16,746 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5208333333333334 [2024-06-27 23:15:16,746 INFO L175 Difference]: Start difference. First operand has 159 places, 264 transitions, 4000 flow. Second operand 8 states and 175 transitions. [2024-06-27 23:15:16,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 310 transitions, 5261 flow [2024-06-27 23:15:16,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 310 transitions, 5128 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-27 23:15:16,919 INFO L231 Difference]: Finished difference. Result has 161 places, 270 transitions, 4398 flow [2024-06-27 23:15:16,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3867, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4398, PETRI_PLACES=161, PETRI_TRANSITIONS=270} [2024-06-27 23:15:16,919 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 118 predicate places. [2024-06-27 23:15:16,920 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 270 transitions, 4398 flow [2024-06-27 23:15:16,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:15:16,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:15:16,920 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:15:16,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 23:15:16,920 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:15:16,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:15:16,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1905423872, now seen corresponding path program 5 times [2024-06-27 23:15:16,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:15:16,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93265863] [2024-06-27 23:15:16,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:15:16,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:15:16,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:15:18,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:15:18,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:15:18,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93265863] [2024-06-27 23:15:18,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93265863] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:15:18,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:15:18,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:15:18,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074951061] [2024-06-27 23:15:18,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:15:18,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:15:18,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:15:18,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:15:18,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:15:18,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-27 23:15:18,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 270 transitions, 4398 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:15:18,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:15:18,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-27 23:15:18,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:15:19,857 INFO L124 PetriNetUnfolderBase]: 2786/4277 cut-off events. [2024-06-27 23:15:19,857 INFO L125 PetriNetUnfolderBase]: For 224112/224123 co-relation queries the response was YES. [2024-06-27 23:15:19,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35534 conditions, 4277 events. 2786/4277 cut-off events. For 224112/224123 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 21895 event pairs, 639 based on Foata normal form. 15/4282 useless extension candidates. Maximal degree in co-relation 35458. Up to 3239 conditions per place. [2024-06-27 23:15:19,895 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 156 selfloop transitions, 154 changer transitions 0/324 dead transitions. [2024-06-27 23:15:19,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 324 transitions, 5908 flow [2024-06-27 23:15:19,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:15:19,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:15:19,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 194 transitions. [2024-06-27 23:15:19,897 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5132275132275133 [2024-06-27 23:15:19,898 INFO L175 Difference]: Start difference. First operand has 161 places, 270 transitions, 4398 flow. Second operand 9 states and 194 transitions. [2024-06-27 23:15:19,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 324 transitions, 5908 flow [2024-06-27 23:15:20,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 324 transitions, 5574 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-06-27 23:15:20,117 INFO L231 Difference]: Finished difference. Result has 165 places, 282 transitions, 4685 flow [2024-06-27 23:15:20,117 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4092, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4685, PETRI_PLACES=165, PETRI_TRANSITIONS=282} [2024-06-27 23:15:20,117 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 122 predicate places. [2024-06-27 23:15:20,117 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 282 transitions, 4685 flow [2024-06-27 23:15:20,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:15:20,117 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:15:20,117 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:15:20,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 23:15:20,118 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:15:20,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:15:20,118 INFO L85 PathProgramCache]: Analyzing trace with hash -1881466142, now seen corresponding path program 6 times [2024-06-27 23:15:20,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:15:20,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777832672] [2024-06-27 23:15:20,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:15:20,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:15:20,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:15:21,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:15:21,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:15:21,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777832672] [2024-06-27 23:15:21,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777832672] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:15:21,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:15:21,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:15:21,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661873465] [2024-06-27 23:15:21,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:15:21,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:15:21,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:15:21,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:15:21,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:15:21,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-27 23:15:21,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 282 transitions, 4685 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 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) [2024-06-27 23:15:21,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:15:21,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-27 23:15:21,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:15:22,853 INFO L124 PetriNetUnfolderBase]: 2916/4452 cut-off events. [2024-06-27 23:15:22,854 INFO L125 PetriNetUnfolderBase]: For 253020/253037 co-relation queries the response was YES. [2024-06-27 23:15:22,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37555 conditions, 4452 events. 2916/4452 cut-off events. For 253020/253037 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 23133 event pairs, 848 based on Foata normal form. 13/4400 useless extension candidates. Maximal degree in co-relation 37478. Up to 3398 conditions per place. [2024-06-27 23:15:22,893 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 142 selfloop transitions, 178 changer transitions 0/334 dead transitions. [2024-06-27 23:15:22,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 334 transitions, 6212 flow [2024-06-27 23:15:22,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:15:22,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:15:22,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 179 transitions. [2024-06-27 23:15:22,900 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5327380952380952 [2024-06-27 23:15:22,900 INFO L175 Difference]: Start difference. First operand has 165 places, 282 transitions, 4685 flow. Second operand 8 states and 179 transitions. [2024-06-27 23:15:22,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 334 transitions, 6212 flow [2024-06-27 23:15:23,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 334 transitions, 5718 flow, removed 29 selfloop flow, removed 7 redundant places. [2024-06-27 23:15:23,130 INFO L231 Difference]: Finished difference. Result has 167 places, 295 transitions, 4959 flow [2024-06-27 23:15:23,130 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4218, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=165, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4959, PETRI_PLACES=167, PETRI_TRANSITIONS=295} [2024-06-27 23:15:23,131 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 124 predicate places. [2024-06-27 23:15:23,131 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 295 transitions, 4959 flow [2024-06-27 23:15:23,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 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) [2024-06-27 23:15:23,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:15:23,131 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:15:23,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 23:15:23,131 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:15:23,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:15:23,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1905416928, now seen corresponding path program 1 times [2024-06-27 23:15:23,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:15:23,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308706752] [2024-06-27 23:15:23,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:15:23,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:15:23,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:15:25,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:15:25,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:15:25,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308706752] [2024-06-27 23:15:25,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308706752] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:15:25,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:15:25,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:15:25,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126537280] [2024-06-27 23:15:25,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:15:25,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:15:25,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:15:25,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:15:25,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:15:25,171 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:15:25,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 295 transitions, 4959 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 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) [2024-06-27 23:15:25,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:15:25,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:15:25,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:15:26,441 INFO L124 PetriNetUnfolderBase]: 3154/4745 cut-off events. [2024-06-27 23:15:26,441 INFO L125 PetriNetUnfolderBase]: For 251115/251123 co-relation queries the response was YES. [2024-06-27 23:15:26,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40139 conditions, 4745 events. 3154/4745 cut-off events. For 251115/251123 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 23769 event pairs, 713 based on Foata normal form. 8/4753 useless extension candidates. Maximal degree in co-relation 40060. Up to 3713 conditions per place. [2024-06-27 23:15:26,481 INFO L140 encePairwiseOnDemand]: 27/42 looper letters, 190 selfloop transitions, 176 changer transitions 0/371 dead transitions. [2024-06-27 23:15:26,482 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 371 transitions, 6842 flow [2024-06-27 23:15:26,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:15:26,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:15:26,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 181 transitions. [2024-06-27 23:15:26,483 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47883597883597884 [2024-06-27 23:15:26,483 INFO L175 Difference]: Start difference. First operand has 167 places, 295 transitions, 4959 flow. Second operand 9 states and 181 transitions. [2024-06-27 23:15:26,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 371 transitions, 6842 flow [2024-06-27 23:15:26,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 371 transitions, 6608 flow, removed 35 selfloop flow, removed 3 redundant places. [2024-06-27 23:15:26,734 INFO L231 Difference]: Finished difference. Result has 175 places, 326 transitions, 5764 flow [2024-06-27 23:15:26,734 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4758, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5764, PETRI_PLACES=175, PETRI_TRANSITIONS=326} [2024-06-27 23:15:26,734 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 132 predicate places. [2024-06-27 23:15:26,734 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 326 transitions, 5764 flow [2024-06-27 23:15:26,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 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) [2024-06-27 23:15:26,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:15:26,735 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:15:26,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 23:15:26,735 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:15:26,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:15:26,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1622724367, now seen corresponding path program 1 times [2024-06-27 23:15:26,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:15:26,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304935176] [2024-06-27 23:15:26,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:15:26,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:15:26,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:15:28,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:15:28,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:15:28,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304935176] [2024-06-27 23:15:28,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304935176] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:15:28,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:15:28,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:15:28,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258202918] [2024-06-27 23:15:28,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:15:28,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:15:28,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:15:28,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:15:28,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:15:28,231 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:15:28,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 326 transitions, 5764 flow. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:15:28,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:15:28,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:15:28,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:15:29,248 INFO L124 PetriNetUnfolderBase]: 3194/4782 cut-off events. [2024-06-27 23:15:29,248 INFO L125 PetriNetUnfolderBase]: For 269430/269451 co-relation queries the response was YES. [2024-06-27 23:15:29,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41004 conditions, 4782 events. 3194/4782 cut-off events. For 269430/269451 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 23980 event pairs, 1025 based on Foata normal form. 15/4773 useless extension candidates. Maximal degree in co-relation 40922. Up to 4588 conditions per place. [2024-06-27 23:15:29,294 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 305 selfloop transitions, 25 changer transitions 0/352 dead transitions. [2024-06-27 23:15:29,295 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 352 transitions, 6670 flow [2024-06-27 23:15:29,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:15:29,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:15:29,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 127 transitions. [2024-06-27 23:15:29,296 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43197278911564624 [2024-06-27 23:15:29,296 INFO L175 Difference]: Start difference. First operand has 175 places, 326 transitions, 5764 flow. Second operand 7 states and 127 transitions. [2024-06-27 23:15:29,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 352 transitions, 6670 flow [2024-06-27 23:15:29,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 352 transitions, 6438 flow, removed 28 selfloop flow, removed 4 redundant places. [2024-06-27 23:15:29,626 INFO L231 Difference]: Finished difference. Result has 179 places, 334 transitions, 5722 flow [2024-06-27 23:15:29,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5536, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5722, PETRI_PLACES=179, PETRI_TRANSITIONS=334} [2024-06-27 23:15:29,626 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 136 predicate places. [2024-06-27 23:15:29,626 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 334 transitions, 5722 flow [2024-06-27 23:15:29,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:15:29,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:15:29,627 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:15:29,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 23:15:29,627 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:15:29,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:15:29,627 INFO L85 PathProgramCache]: Analyzing trace with hash 375122471, now seen corresponding path program 1 times [2024-06-27 23:15:29,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:15:29,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986580611] [2024-06-27 23:15:29,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:15:29,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:15:29,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:15:31,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:15:31,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:15:31,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986580611] [2024-06-27 23:15:31,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986580611] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:15:31,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:15:31,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:15:31,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706858672] [2024-06-27 23:15:31,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:15:31,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:15:31,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:15:31,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:15:31,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:15:31,922 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-27 23:15:31,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 334 transitions, 5722 flow. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 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) [2024-06-27 23:15:31,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:15:31,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-27 23:15:31,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:15:33,273 INFO L124 PetriNetUnfolderBase]: 3395/5194 cut-off events. [2024-06-27 23:15:33,273 INFO L125 PetriNetUnfolderBase]: For 308360/308384 co-relation queries the response was YES. [2024-06-27 23:15:33,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44421 conditions, 5194 events. 3395/5194 cut-off events. For 308360/308384 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 27713 event pairs, 636 based on Foata normal form. 29/5180 useless extension candidates. Maximal degree in co-relation 44337. Up to 3360 conditions per place. [2024-06-27 23:15:33,322 INFO L140 encePairwiseOnDemand]: 27/42 looper letters, 167 selfloop transitions, 272 changer transitions 0/457 dead transitions. [2024-06-27 23:15:33,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 457 transitions, 8297 flow [2024-06-27 23:15:33,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:15:33,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:15:33,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 190 transitions. [2024-06-27 23:15:33,324 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5026455026455027 [2024-06-27 23:15:33,324 INFO L175 Difference]: Start difference. First operand has 179 places, 334 transitions, 5722 flow. Second operand 9 states and 190 transitions. [2024-06-27 23:15:33,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 457 transitions, 8297 flow [2024-06-27 23:15:33,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 457 transitions, 8228 flow, removed 30 selfloop flow, removed 2 redundant places. [2024-06-27 23:15:33,660 INFO L231 Difference]: Finished difference. Result has 189 places, 412 transitions, 7581 flow [2024-06-27 23:15:33,660 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5659, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=199, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7581, PETRI_PLACES=189, PETRI_TRANSITIONS=412} [2024-06-27 23:15:33,660 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 146 predicate places. [2024-06-27 23:15:33,661 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 412 transitions, 7581 flow [2024-06-27 23:15:33,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 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) [2024-06-27 23:15:33,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:15:33,661 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:15:33,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 23:15:33,661 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:15:33,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:15:33,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1631358984, now seen corresponding path program 1 times [2024-06-27 23:15:33,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:15:33,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594372471] [2024-06-27 23:15:33,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:15:33,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:15:33,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:15:35,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:15:35,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:15:35,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594372471] [2024-06-27 23:15:35,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594372471] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:15:35,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:15:35,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:15:35,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373379120] [2024-06-27 23:15:35,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:15:35,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:15:35,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:15:35,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:15:35,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:15:35,200 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:15:35,201 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 412 transitions, 7581 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 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) [2024-06-27 23:15:35,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:15:35,201 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:15:35,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:15:36,584 INFO L124 PetriNetUnfolderBase]: 3675/5547 cut-off events. [2024-06-27 23:15:36,584 INFO L125 PetriNetUnfolderBase]: For 344228/344242 co-relation queries the response was YES. [2024-06-27 23:15:36,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50122 conditions, 5547 events. 3675/5547 cut-off events. For 344228/344242 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 29080 event pairs, 1160 based on Foata normal form. 4/5531 useless extension candidates. Maximal degree in co-relation 50033. Up to 4846 conditions per place. [2024-06-27 23:15:36,641 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 309 selfloop transitions, 142 changer transitions 0/458 dead transitions. [2024-06-27 23:15:36,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 458 transitions, 9238 flow [2024-06-27 23:15:36,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:15:36,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:15:36,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 173 transitions. [2024-06-27 23:15:36,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4576719576719577 [2024-06-27 23:15:36,643 INFO L175 Difference]: Start difference. First operand has 189 places, 412 transitions, 7581 flow. Second operand 9 states and 173 transitions. [2024-06-27 23:15:36,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 458 transitions, 9238 flow [2024-06-27 23:15:37,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 458 transitions, 9165 flow, removed 29 selfloop flow, removed 2 redundant places. [2024-06-27 23:15:37,077 INFO L231 Difference]: Finished difference. Result has 196 places, 427 transitions, 8114 flow [2024-06-27 23:15:37,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7512, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=412, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8114, PETRI_PLACES=196, PETRI_TRANSITIONS=427} [2024-06-27 23:15:37,078 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 153 predicate places. [2024-06-27 23:15:37,078 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 427 transitions, 8114 flow [2024-06-27 23:15:37,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 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) [2024-06-27 23:15:37,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:15:37,078 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:15:37,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 23:15:37,078 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:15:37,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:15:37,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1812490514, now seen corresponding path program 2 times [2024-06-27 23:15:37,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:15:37,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925808767] [2024-06-27 23:15:37,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:15:37,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:15:37,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:15:38,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:15:38,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:15:38,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925808767] [2024-06-27 23:15:38,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925808767] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:15:38,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:15:38,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:15:38,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998176358] [2024-06-27 23:15:38,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:15:38,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:15:38,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:15:38,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:15:38,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:15:38,640 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:15:38,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 427 transitions, 8114 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 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) [2024-06-27 23:15:38,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:15:38,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:15:38,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:15:40,172 INFO L124 PetriNetUnfolderBase]: 3661/5522 cut-off events. [2024-06-27 23:15:40,173 INFO L125 PetriNetUnfolderBase]: For 354756/354770 co-relation queries the response was YES. [2024-06-27 23:15:40,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50152 conditions, 5522 events. 3661/5522 cut-off events. For 354756/354770 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 28876 event pairs, 1163 based on Foata normal form. 4/5506 useless extension candidates. Maximal degree in co-relation 50061. Up to 4830 conditions per place. [2024-06-27 23:15:40,226 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 313 selfloop transitions, 144 changer transitions 0/464 dead transitions. [2024-06-27 23:15:40,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 464 transitions, 9376 flow [2024-06-27 23:15:40,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:15:40,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:15:40,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 202 transitions. [2024-06-27 23:15:40,227 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43722943722943725 [2024-06-27 23:15:40,227 INFO L175 Difference]: Start difference. First operand has 196 places, 427 transitions, 8114 flow. Second operand 11 states and 202 transitions. [2024-06-27 23:15:40,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 464 transitions, 9376 flow [2024-06-27 23:15:40,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 464 transitions, 8985 flow, removed 56 selfloop flow, removed 5 redundant places. [2024-06-27 23:15:40,629 INFO L231 Difference]: Finished difference. Result has 202 places, 427 transitions, 8030 flow [2024-06-27 23:15:40,629 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7723, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=144, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8030, PETRI_PLACES=202, PETRI_TRANSITIONS=427} [2024-06-27 23:15:40,630 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 159 predicate places. [2024-06-27 23:15:40,630 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 427 transitions, 8030 flow [2024-06-27 23:15:40,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 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) [2024-06-27 23:15:40,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:15:40,630 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:15:40,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 23:15:40,630 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:15:40,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:15:40,631 INFO L85 PathProgramCache]: Analyzing trace with hash -35257594, now seen corresponding path program 2 times [2024-06-27 23:15:40,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:15:40,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444841732] [2024-06-27 23:15:40,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:15:40,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:15:40,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:15:42,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:15:42,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:15:42,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444841732] [2024-06-27 23:15:42,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444841732] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:15:42,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:15:42,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:15:42,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719376741] [2024-06-27 23:15:42,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:15:42,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:15:42,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:15:42,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:15:42,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:15:42,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:15:42,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 427 transitions, 8030 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 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) [2024-06-27 23:15:42,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:15:42,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:15:42,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:15:43,759 INFO L124 PetriNetUnfolderBase]: 3690/5564 cut-off events. [2024-06-27 23:15:43,759 INFO L125 PetriNetUnfolderBase]: For 370214/370228 co-relation queries the response was YES. [2024-06-27 23:15:43,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50656 conditions, 5564 events. 3690/5564 cut-off events. For 370214/370228 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 29178 event pairs, 1180 based on Foata normal form. 8/5552 useless extension candidates. Maximal degree in co-relation 50563. Up to 4614 conditions per place. [2024-06-27 23:15:43,817 INFO L140 encePairwiseOnDemand]: 28/42 looper letters, 272 selfloop transitions, 190 changer transitions 0/469 dead transitions. [2024-06-27 23:15:43,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 469 transitions, 9581 flow [2024-06-27 23:15:43,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:15:43,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:15:43,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 165 transitions. [2024-06-27 23:15:43,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4365079365079365 [2024-06-27 23:15:43,819 INFO L175 Difference]: Start difference. First operand has 202 places, 427 transitions, 8030 flow. Second operand 9 states and 165 transitions. [2024-06-27 23:15:43,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 469 transitions, 9581 flow [2024-06-27 23:15:44,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 469 transitions, 9232 flow, removed 39 selfloop flow, removed 8 redundant places. [2024-06-27 23:15:44,191 INFO L231 Difference]: Finished difference. Result has 204 places, 443 transitions, 8602 flow [2024-06-27 23:15:44,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7681, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=174, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8602, PETRI_PLACES=204, PETRI_TRANSITIONS=443} [2024-06-27 23:15:44,192 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 161 predicate places. [2024-06-27 23:15:44,192 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 443 transitions, 8602 flow [2024-06-27 23:15:44,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 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) [2024-06-27 23:15:44,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:15:44,193 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:15:44,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 23:15:44,193 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:15:44,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:15:44,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1812311024, now seen corresponding path program 3 times [2024-06-27 23:15:44,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:15:44,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913685409] [2024-06-27 23:15:44,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:15:44,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:15:44,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:15:45,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:15:45,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:15:45,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913685409] [2024-06-27 23:15:45,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913685409] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:15:45,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:15:45,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:15:45,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321024830] [2024-06-27 23:15:45,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:15:45,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:15:45,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:15:45,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:15:45,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:15:45,588 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:15:45,588 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 443 transitions, 8602 flow. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:15:45,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:15:45,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:15:45,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:15:46,881 INFO L124 PetriNetUnfolderBase]: 3679/5560 cut-off events. [2024-06-27 23:15:46,881 INFO L125 PetriNetUnfolderBase]: For 380570/380584 co-relation queries the response was YES. [2024-06-27 23:15:46,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51382 conditions, 5560 events. 3679/5560 cut-off events. For 380570/380584 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 29211 event pairs, 1160 based on Foata normal form. 3/5543 useless extension candidates. Maximal degree in co-relation 51287. Up to 4858 conditions per place. [2024-06-27 23:15:46,935 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 311 selfloop transitions, 154 changer transitions 0/472 dead transitions. [2024-06-27 23:15:46,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 472 transitions, 9863 flow [2024-06-27 23:15:46,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:15:46,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:15:46,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 155 transitions. [2024-06-27 23:15:46,937 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46130952380952384 [2024-06-27 23:15:46,937 INFO L175 Difference]: Start difference. First operand has 204 places, 443 transitions, 8602 flow. Second operand 8 states and 155 transitions. [2024-06-27 23:15:46,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 472 transitions, 9863 flow [2024-06-27 23:15:47,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 472 transitions, 9603 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-27 23:15:47,382 INFO L231 Difference]: Finished difference. Result has 205 places, 445 transitions, 8691 flow [2024-06-27 23:15:47,382 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=8342, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=443, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8691, PETRI_PLACES=205, PETRI_TRANSITIONS=445} [2024-06-27 23:15:47,382 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 162 predicate places. [2024-06-27 23:15:47,382 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 445 transitions, 8691 flow [2024-06-27 23:15:47,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:15:47,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:15:47,383 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:15:47,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 23:15:47,383 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:15:47,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:15:47,383 INFO L85 PathProgramCache]: Analyzing trace with hash -1117800734, now seen corresponding path program 1 times [2024-06-27 23:15:47,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:15:47,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073963966] [2024-06-27 23:15:47,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:15:47,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:15:47,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:15:48,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:15:48,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:15:48,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073963966] [2024-06-27 23:15:48,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073963966] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:15:48,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:15:48,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:15:48,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12594806] [2024-06-27 23:15:48,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:15:48,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:15:48,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:15:48,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:15:48,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:15:48,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:15:48,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 445 transitions, 8691 flow. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:15:48,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:15:48,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:15:48,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:15:50,086 INFO L124 PetriNetUnfolderBase]: 3683/5541 cut-off events. [2024-06-27 23:15:50,086 INFO L125 PetriNetUnfolderBase]: For 387720/387786 co-relation queries the response was YES. [2024-06-27 23:15:50,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51166 conditions, 5541 events. 3683/5541 cut-off events. For 387720/387786 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 29110 event pairs, 1224 based on Foata normal form. 40/5548 useless extension candidates. Maximal degree in co-relation 51070. Up to 5287 conditions per place. [2024-06-27 23:15:50,143 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 420 selfloop transitions, 31 changer transitions 0/474 dead transitions. [2024-06-27 23:15:50,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 474 transitions, 9961 flow [2024-06-27 23:15:50,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:15:50,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:15:50,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 125 transitions. [2024-06-27 23:15:50,144 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42517006802721086 [2024-06-27 23:15:50,144 INFO L175 Difference]: Start difference. First operand has 205 places, 445 transitions, 8691 flow. Second operand 7 states and 125 transitions. [2024-06-27 23:15:50,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 474 transitions, 9961 flow [2024-06-27 23:15:50,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 474 transitions, 9726 flow, removed 28 selfloop flow, removed 5 redundant places. [2024-06-27 23:15:50,630 INFO L231 Difference]: Finished difference. Result has 209 places, 460 transitions, 8717 flow [2024-06-27 23:15:50,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=8456, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=445, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=420, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8717, PETRI_PLACES=209, PETRI_TRANSITIONS=460} [2024-06-27 23:15:50,631 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 166 predicate places. [2024-06-27 23:15:50,631 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 460 transitions, 8717 flow [2024-06-27 23:15:50,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:15:50,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:15:50,631 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:15:50,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 23:15:50,631 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:15:50,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:15:50,632 INFO L85 PathProgramCache]: Analyzing trace with hash -814648176, now seen corresponding path program 1 times [2024-06-27 23:15:50,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:15:50,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001944553] [2024-06-27 23:15:50,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:15:50,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:15:50,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:15:52,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:15:52,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:15:52,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001944553] [2024-06-27 23:15:52,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001944553] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:15:52,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:15:52,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:15:52,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714956613] [2024-06-27 23:15:52,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:15:52,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:15:52,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:15:52,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:15:52,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:15:52,816 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-27 23:15:52,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 460 transitions, 8717 flow. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:15:52,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:15:52,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-27 23:15:52,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:15:54,134 INFO L124 PetriNetUnfolderBase]: 3605/5492 cut-off events. [2024-06-27 23:15:54,134 INFO L125 PetriNetUnfolderBase]: For 459531/459579 co-relation queries the response was YES. [2024-06-27 23:15:54,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52031 conditions, 5492 events. 3605/5492 cut-off events. For 459531/459579 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 29800 event pairs, 894 based on Foata normal form. 42/5467 useless extension candidates. Maximal degree in co-relation 51932. Up to 3536 conditions per place. [2024-06-27 23:15:54,189 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 202 selfloop transitions, 283 changer transitions 0/505 dead transitions. [2024-06-27 23:15:54,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 505 transitions, 10243 flow [2024-06-27 23:15:54,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:15:54,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:15:54,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 197 transitions. [2024-06-27 23:15:54,194 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5211640211640212 [2024-06-27 23:15:54,195 INFO L175 Difference]: Start difference. First operand has 209 places, 460 transitions, 8717 flow. Second operand 9 states and 197 transitions. [2024-06-27 23:15:54,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 505 transitions, 10243 flow [2024-06-27 23:15:54,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 505 transitions, 10188 flow, removed 26 selfloop flow, removed 1 redundant places. [2024-06-27 23:15:54,726 INFO L231 Difference]: Finished difference. Result has 217 places, 461 transitions, 9271 flow [2024-06-27 23:15:54,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=8662, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=460, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=282, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9271, PETRI_PLACES=217, PETRI_TRANSITIONS=461} [2024-06-27 23:15:54,726 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 174 predicate places. [2024-06-27 23:15:54,727 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 461 transitions, 9271 flow [2024-06-27 23:15:54,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:15:54,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:15:54,727 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:15:54,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 23:15:54,727 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:15:54,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:15:54,728 INFO L85 PathProgramCache]: Analyzing trace with hash -174605455, now seen corresponding path program 2 times [2024-06-27 23:15:54,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:15:54,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773606711] [2024-06-27 23:15:54,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:15:54,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:15:54,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:15:56,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:15:56,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:15:56,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773606711] [2024-06-27 23:15:56,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773606711] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:15:56,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:15:56,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:15:56,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957048034] [2024-06-27 23:15:56,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:15:56,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:15:56,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:15:56,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:15:56,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:15:56,228 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:15:56,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 461 transitions, 9271 flow. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:15:56,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:15:56,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:15:56,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:15:57,392 INFO L124 PetriNetUnfolderBase]: 3764/5672 cut-off events. [2024-06-27 23:15:57,392 INFO L125 PetriNetUnfolderBase]: For 423593/423667 co-relation queries the response was YES. [2024-06-27 23:15:57,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53401 conditions, 5672 events. 3764/5672 cut-off events. For 423593/423667 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 30058 event pairs, 1299 based on Foata normal form. 40/5676 useless extension candidates. Maximal degree in co-relation 53299. Up to 5434 conditions per place. [2024-06-27 23:15:57,455 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 426 selfloop transitions, 24 changer transitions 0/473 dead transitions. [2024-06-27 23:15:57,456 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 473 transitions, 10297 flow [2024-06-27 23:15:57,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:15:57,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:15:57,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 118 transitions. [2024-06-27 23:15:57,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4013605442176871 [2024-06-27 23:15:57,456 INFO L175 Difference]: Start difference. First operand has 217 places, 461 transitions, 9271 flow. Second operand 7 states and 118 transitions. [2024-06-27 23:15:57,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 473 transitions, 10297 flow [2024-06-27 23:15:58,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 473 transitions, 9805 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-06-27 23:15:58,051 INFO L231 Difference]: Finished difference. Result has 218 places, 461 transitions, 8837 flow [2024-06-27 23:15:58,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=8779, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=461, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=437, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8837, PETRI_PLACES=218, PETRI_TRANSITIONS=461} [2024-06-27 23:15:58,051 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 175 predicate places. [2024-06-27 23:15:58,051 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 461 transitions, 8837 flow [2024-06-27 23:15:58,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:15:58,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:15:58,052 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:15:58,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 23:15:58,052 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:15:58,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:15:58,052 INFO L85 PathProgramCache]: Analyzing trace with hash -814651896, now seen corresponding path program 2 times [2024-06-27 23:15:58,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:15:58,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956734081] [2024-06-27 23:15:58,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:15:58,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:15:58,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:16:00,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:16:00,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:16:00,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956734081] [2024-06-27 23:16:00,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956734081] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:16:00,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:16:00,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:16:00,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332159099] [2024-06-27 23:16:00,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:16:00,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:16:00,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:16:00,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:16:00,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:16:00,589 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-27 23:16:00,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 461 transitions, 8837 flow. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:16:00,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:16:00,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-27 23:16:00,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:16:02,000 INFO L124 PetriNetUnfolderBase]: 3667/5601 cut-off events. [2024-06-27 23:16:02,000 INFO L125 PetriNetUnfolderBase]: For 478601/478649 co-relation queries the response was YES. [2024-06-27 23:16:02,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53455 conditions, 5601 events. 3667/5601 cut-off events. For 478601/478649 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 30596 event pairs, 885 based on Foata normal form. 34/5568 useless extension candidates. Maximal degree in co-relation 53352. Up to 3529 conditions per place. [2024-06-27 23:16:02,053 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 220 selfloop transitions, 270 changer transitions 0/510 dead transitions. [2024-06-27 23:16:02,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 510 transitions, 10409 flow [2024-06-27 23:16:02,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:16:02,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:16:02,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 200 transitions. [2024-06-27 23:16:02,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5291005291005291 [2024-06-27 23:16:02,055 INFO L175 Difference]: Start difference. First operand has 218 places, 461 transitions, 8837 flow. Second operand 9 states and 200 transitions. [2024-06-27 23:16:02,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 510 transitions, 10409 flow [2024-06-27 23:16:02,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 510 transitions, 10370 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-06-27 23:16:02,504 INFO L231 Difference]: Finished difference. Result has 222 places, 462 transitions, 9380 flow [2024-06-27 23:16:02,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=8798, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=461, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=269, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9380, PETRI_PLACES=222, PETRI_TRANSITIONS=462} [2024-06-27 23:16:02,505 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 179 predicate places. [2024-06-27 23:16:02,505 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 462 transitions, 9380 flow [2024-06-27 23:16:02,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:16:02,505 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:16:02,505 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:16:02,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 23:16:02,505 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:16:02,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:16:02,506 INFO L85 PathProgramCache]: Analyzing trace with hash -610643814, now seen corresponding path program 3 times [2024-06-27 23:16:02,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:16:02,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115427075] [2024-06-27 23:16:02,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:16:02,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:16:02,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:16:03,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:16:03,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:16:03,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115427075] [2024-06-27 23:16:03,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115427075] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:16:03,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:16:03,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:16:03,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185197688] [2024-06-27 23:16:03,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:16:03,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:16:03,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:16:03,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:16:03,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:16:03,992 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:16:03,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 462 transitions, 9380 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 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) [2024-06-27 23:16:03,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:16:03,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:16:03,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:16:05,411 INFO L124 PetriNetUnfolderBase]: 3864/5850 cut-off events. [2024-06-27 23:16:05,411 INFO L125 PetriNetUnfolderBase]: For 458797/458809 co-relation queries the response was YES. [2024-06-27 23:16:05,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55659 conditions, 5850 events. 3864/5850 cut-off events. For 458797/458809 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 31160 event pairs, 1329 based on Foata normal form. 3/5833 useless extension candidates. Maximal degree in co-relation 55555. Up to 5543 conditions per place. [2024-06-27 23:16:05,476 INFO L140 encePairwiseOnDemand]: 28/42 looper letters, 451 selfloop transitions, 41 changer transitions 0/501 dead transitions. [2024-06-27 23:16:05,476 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 501 transitions, 10753 flow [2024-06-27 23:16:05,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:16:05,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:16:05,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-06-27 23:16:05,478 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42328042328042326 [2024-06-27 23:16:05,478 INFO L175 Difference]: Start difference. First operand has 222 places, 462 transitions, 9380 flow. Second operand 9 states and 160 transitions. [2024-06-27 23:16:05,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 501 transitions, 10753 flow [2024-06-27 23:16:06,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 501 transitions, 10182 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-27 23:16:06,181 INFO L231 Difference]: Finished difference. Result has 223 places, 471 transitions, 9175 flow [2024-06-27 23:16:06,181 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=8819, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=462, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=421, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9175, PETRI_PLACES=223, PETRI_TRANSITIONS=471} [2024-06-27 23:16:06,181 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 180 predicate places. [2024-06-27 23:16:06,181 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 471 transitions, 9175 flow [2024-06-27 23:16:06,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 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) [2024-06-27 23:16:06,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:16:06,182 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:16:06,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 23:16:06,182 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:16:06,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:16:06,182 INFO L85 PathProgramCache]: Analyzing trace with hash 465083848, now seen corresponding path program 7 times [2024-06-27 23:16:06,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:16:06,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678867023] [2024-06-27 23:16:06,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:16:06,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:16:06,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:16:07,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:16:07,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:16:07,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678867023] [2024-06-27 23:16:07,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678867023] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:16:07,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:16:07,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:16:07,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814340038] [2024-06-27 23:16:07,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:16:07,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:16:07,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:16:07,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:16:07,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:16:08,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-27 23:16:08,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 471 transitions, 9175 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:16:08,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:16:08,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-27 23:16:08,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:16:09,426 INFO L124 PetriNetUnfolderBase]: 3682/5676 cut-off events. [2024-06-27 23:16:09,426 INFO L125 PetriNetUnfolderBase]: For 474387/474424 co-relation queries the response was YES. [2024-06-27 23:16:09,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54392 conditions, 5676 events. 3682/5676 cut-off events. For 474387/474424 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 31334 event pairs, 1165 based on Foata normal form. 15/5636 useless extension candidates. Maximal degree in co-relation 54288. Up to 5103 conditions per place. [2024-06-27 23:16:09,486 INFO L140 encePairwiseOnDemand]: 28/42 looper letters, 442 selfloop transitions, 54 changer transitions 0/516 dead transitions. [2024-06-27 23:16:09,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 516 transitions, 10865 flow [2024-06-27 23:16:09,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:16:09,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:16:09,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-27 23:16:09,488 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-27 23:16:09,488 INFO L175 Difference]: Start difference. First operand has 223 places, 471 transitions, 9175 flow. Second operand 9 states and 168 transitions. [2024-06-27 23:16:09,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 516 transitions, 10865 flow [2024-06-27 23:16:10,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 516 transitions, 10605 flow, removed 28 selfloop flow, removed 9 redundant places. [2024-06-27 23:16:10,134 INFO L231 Difference]: Finished difference. Result has 224 places, 486 transitions, 9477 flow [2024-06-27 23:16:10,134 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=8915, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=471, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=417, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9477, PETRI_PLACES=224, PETRI_TRANSITIONS=486} [2024-06-27 23:16:10,135 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 181 predicate places. [2024-06-27 23:16:10,135 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 486 transitions, 9477 flow [2024-06-27 23:16:10,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:16:10,135 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:16:10,135 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:16:10,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-27 23:16:10,135 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:16:10,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:16:10,136 INFO L85 PathProgramCache]: Analyzing trace with hash 2076024992, now seen corresponding path program 4 times [2024-06-27 23:16:10,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:16:10,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969200851] [2024-06-27 23:16:10,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:16:10,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:16:10,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:16:11,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:16:11,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:16:11,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969200851] [2024-06-27 23:16:11,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969200851] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:16:11,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:16:11,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:16:11,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299183596] [2024-06-27 23:16:11,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:16:11,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:16:11,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:16:11,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:16:11,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:16:11,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:16:11,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 486 transitions, 9477 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 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) [2024-06-27 23:16:11,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:16:11,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:16:11,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:16:12,975 INFO L124 PetriNetUnfolderBase]: 3985/6029 cut-off events. [2024-06-27 23:16:12,976 INFO L125 PetriNetUnfolderBase]: For 468812/468824 co-relation queries the response was YES. [2024-06-27 23:16:13,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56931 conditions, 6029 events. 3985/6029 cut-off events. For 468812/468824 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 32259 event pairs, 1337 based on Foata normal form. 4/6013 useless extension candidates. Maximal degree in co-relation 56826. Up to 5657 conditions per place. [2024-06-27 23:16:13,149 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 457 selfloop transitions, 58 changer transitions 0/524 dead transitions. [2024-06-27 23:16:13,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 524 transitions, 11079 flow [2024-06-27 23:16:13,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:16:13,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:16:13,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-27 23:16:13,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-27 23:16:13,151 INFO L175 Difference]: Start difference. First operand has 224 places, 486 transitions, 9477 flow. Second operand 9 states and 162 transitions. [2024-06-27 23:16:13,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 524 transitions, 11079 flow [2024-06-27 23:16:13,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 524 transitions, 10868 flow, removed 62 selfloop flow, removed 6 redundant places. [2024-06-27 23:16:13,758 INFO L231 Difference]: Finished difference. Result has 227 places, 495 transitions, 9652 flow [2024-06-27 23:16:13,758 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9284, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=486, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=437, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9652, PETRI_PLACES=227, PETRI_TRANSITIONS=495} [2024-06-27 23:16:13,758 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 184 predicate places. [2024-06-27 23:16:13,759 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 495 transitions, 9652 flow [2024-06-27 23:16:13,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 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) [2024-06-27 23:16:13,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:16:13,759 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:16:13,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-27 23:16:13,759 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:16:13,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:16:13,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1848123656, now seen corresponding path program 8 times [2024-06-27 23:16:13,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:16:13,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318140958] [2024-06-27 23:16:13,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:16:13,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:16:13,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:16:15,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:16:15,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:16:15,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318140958] [2024-06-27 23:16:15,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318140958] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:16:15,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:16:15,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:16:15,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344031475] [2024-06-27 23:16:15,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:16:15,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:16:15,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:16:15,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:16:15,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:16:15,671 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-27 23:16:15,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 495 transitions, 9652 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:16:15,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:16:15,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-27 23:16:15,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:16:17,220 INFO L124 PetriNetUnfolderBase]: 3702/5704 cut-off events. [2024-06-27 23:16:17,220 INFO L125 PetriNetUnfolderBase]: For 487283/487332 co-relation queries the response was YES. [2024-06-27 23:16:17,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54871 conditions, 5704 events. 3702/5704 cut-off events. For 487283/487332 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 31530 event pairs, 1147 based on Foata normal form. 25/5669 useless extension candidates. Maximal degree in co-relation 54765. Up to 5137 conditions per place. [2024-06-27 23:16:17,288 INFO L140 encePairwiseOnDemand]: 28/42 looper letters, 435 selfloop transitions, 76 changer transitions 0/531 dead transitions. [2024-06-27 23:16:17,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 531 transitions, 11160 flow [2024-06-27 23:16:17,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:16:17,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:16:17,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 171 transitions. [2024-06-27 23:16:17,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2024-06-27 23:16:17,290 INFO L175 Difference]: Start difference. First operand has 227 places, 495 transitions, 9652 flow. Second operand 9 states and 171 transitions. [2024-06-27 23:16:17,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 531 transitions, 11160 flow [2024-06-27 23:16:17,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 531 transitions, 10994 flow, removed 26 selfloop flow, removed 7 redundant places. [2024-06-27 23:16:17,955 INFO L231 Difference]: Finished difference. Result has 229 places, 501 transitions, 9804 flow [2024-06-27 23:16:17,955 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9486, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=495, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9804, PETRI_PLACES=229, PETRI_TRANSITIONS=501} [2024-06-27 23:16:17,956 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 186 predicate places. [2024-06-27 23:16:17,956 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 501 transitions, 9804 flow [2024-06-27 23:16:17,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:16:17,956 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:16:17,956 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:16:17,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-27 23:16:17,957 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:16:17,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:16:17,957 INFO L85 PathProgramCache]: Analyzing trace with hash 2076031502, now seen corresponding path program 5 times [2024-06-27 23:16:17,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:16:17,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262191717] [2024-06-27 23:16:17,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:16:17,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:16:17,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:16:19,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:16:19,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:16:19,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262191717] [2024-06-27 23:16:19,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262191717] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:16:19,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:16:19,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:16:19,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032984509] [2024-06-27 23:16:19,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:16:19,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:16:19,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:16:19,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:16:19,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:16:19,401 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:16:19,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 501 transitions, 9804 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 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) [2024-06-27 23:16:19,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:16:19,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:16:19,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:16:21,023 INFO L124 PetriNetUnfolderBase]: 3955/5987 cut-off events. [2024-06-27 23:16:21,023 INFO L125 PetriNetUnfolderBase]: For 486615/486627 co-relation queries the response was YES. [2024-06-27 23:16:21,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56477 conditions, 5987 events. 3955/5987 cut-off events. For 486615/486627 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 32015 event pairs, 1331 based on Foata normal form. 4/5971 useless extension candidates. Maximal degree in co-relation 56370. Up to 5619 conditions per place. [2024-06-27 23:16:21,099 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 464 selfloop transitions, 58 changer transitions 0/531 dead transitions. [2024-06-27 23:16:21,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 531 transitions, 11018 flow [2024-06-27 23:16:21,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:16:21,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:16:21,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 161 transitions. [2024-06-27 23:16:21,101 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42592592592592593 [2024-06-27 23:16:21,101 INFO L175 Difference]: Start difference. First operand has 229 places, 501 transitions, 9804 flow. Second operand 9 states and 161 transitions. [2024-06-27 23:16:21,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 531 transitions, 11018 flow [2024-06-27 23:16:21,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 531 transitions, 10638 flow, removed 81 selfloop flow, removed 7 redundant places. [2024-06-27 23:16:21,836 INFO L231 Difference]: Finished difference. Result has 231 places, 504 transitions, 9596 flow [2024-06-27 23:16:21,836 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9430, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=501, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=446, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9596, PETRI_PLACES=231, PETRI_TRANSITIONS=504} [2024-06-27 23:16:21,836 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 188 predicate places. [2024-06-27 23:16:21,837 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 504 transitions, 9596 flow [2024-06-27 23:16:21,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 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) [2024-06-27 23:16:21,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:16:21,837 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:16:21,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-27 23:16:21,837 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:16:21,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:16:21,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1848123842, now seen corresponding path program 6 times [2024-06-27 23:16:21,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:16:21,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306160149] [2024-06-27 23:16:21,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:16:21,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:16:21,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:16:23,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:16:23,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:16:23,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306160149] [2024-06-27 23:16:23,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306160149] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:16:23,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:16:23,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:16:23,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191076629] [2024-06-27 23:16:23,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:16:23,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:16:23,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:16:23,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:16:23,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:16:23,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:16:23,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 504 transitions, 9596 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 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) [2024-06-27 23:16:23,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:16:23,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:16:23,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:16:24,993 INFO L124 PetriNetUnfolderBase]: 3980/6031 cut-off events. [2024-06-27 23:16:24,994 INFO L125 PetriNetUnfolderBase]: For 500851/500863 co-relation queries the response was YES. [2024-06-27 23:16:25,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56692 conditions, 6031 events. 3980/6031 cut-off events. For 500851/500863 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 32438 event pairs, 1322 based on Foata normal form. 4/6015 useless extension candidates. Maximal degree in co-relation 56585. Up to 5634 conditions per place. [2024-06-27 23:16:25,056 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 461 selfloop transitions, 73 changer transitions 0/543 dead transitions. [2024-06-27 23:16:25,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 543 transitions, 11242 flow [2024-06-27 23:16:25,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:16:25,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:16:25,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 165 transitions. [2024-06-27 23:16:25,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4365079365079365 [2024-06-27 23:16:25,058 INFO L175 Difference]: Start difference. First operand has 231 places, 504 transitions, 9596 flow. Second operand 9 states and 165 transitions. [2024-06-27 23:16:25,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 543 transitions, 11242 flow [2024-06-27 23:16:25,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 543 transitions, 11144 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-27 23:16:25,696 INFO L231 Difference]: Finished difference. Result has 235 places, 513 transitions, 9878 flow [2024-06-27 23:16:25,696 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9498, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=504, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=440, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9878, PETRI_PLACES=235, PETRI_TRANSITIONS=513} [2024-06-27 23:16:25,696 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 192 predicate places. [2024-06-27 23:16:25,697 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 513 transitions, 9878 flow [2024-06-27 23:16:25,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 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) [2024-06-27 23:16:25,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:16:25,697 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:16:25,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-27 23:16:25,697 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:16:25,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:16:25,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1201418460, now seen corresponding path program 4 times [2024-06-27 23:16:25,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:16:25,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964515972] [2024-06-27 23:16:25,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:16:25,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:16:25,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:16:27,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:16:27,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:16:27,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964515972] [2024-06-27 23:16:27,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964515972] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:16:27,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:16:27,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:16:27,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535959373] [2024-06-27 23:16:27,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:16:27,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:16:27,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:16:27,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:16:27,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:16:27,520 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:16:27,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 513 transitions, 9878 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 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) [2024-06-27 23:16:27,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:16:27,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:16:27,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:16:28,886 INFO L124 PetriNetUnfolderBase]: 3969/6012 cut-off events. [2024-06-27 23:16:28,887 INFO L125 PetriNetUnfolderBase]: For 512686/512698 co-relation queries the response was YES. [2024-06-27 23:16:28,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56679 conditions, 6012 events. 3969/6012 cut-off events. For 512686/512698 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 32305 event pairs, 1330 based on Foata normal form. 4/5996 useless extension candidates. Maximal degree in co-relation 56571. Up to 5621 conditions per place. [2024-06-27 23:16:28,961 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 463 selfloop transitions, 67 changer transitions 0/539 dead transitions. [2024-06-27 23:16:28,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 539 transitions, 11100 flow [2024-06-27 23:16:28,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:16:28,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:16:28,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-06-27 23:16:28,962 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-27 23:16:28,962 INFO L175 Difference]: Start difference. First operand has 235 places, 513 transitions, 9878 flow. Second operand 8 states and 147 transitions. [2024-06-27 23:16:28,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 539 transitions, 11100 flow [2024-06-27 23:16:29,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 539 transitions, 10864 flow, removed 46 selfloop flow, removed 7 redundant places. [2024-06-27 23:16:29,741 INFO L231 Difference]: Finished difference. Result has 236 places, 513 transitions, 9792 flow [2024-06-27 23:16:29,742 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9642, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=446, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9792, PETRI_PLACES=236, PETRI_TRANSITIONS=513} [2024-06-27 23:16:29,742 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 193 predicate places. [2024-06-27 23:16:29,742 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 513 transitions, 9792 flow [2024-06-27 23:16:29,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 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) [2024-06-27 23:16:29,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:16:29,742 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:16:29,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-27 23:16:29,743 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:16:29,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:16:29,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1848130352, now seen corresponding path program 7 times [2024-06-27 23:16:29,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:16:29,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4617482] [2024-06-27 23:16:29,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:16:29,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:16:29,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:16:31,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:16:31,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:16:31,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4617482] [2024-06-27 23:16:31,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4617482] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:16:31,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:16:31,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:16:31,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382549067] [2024-06-27 23:16:31,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:16:31,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:16:31,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:16:31,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:16:31,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:16:31,239 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:16:31,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 513 transitions, 9792 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 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) [2024-06-27 23:16:31,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:16:31,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:16:31,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:16:32,858 INFO L124 PetriNetUnfolderBase]: 3955/5994 cut-off events. [2024-06-27 23:16:32,858 INFO L125 PetriNetUnfolderBase]: For 522086/522098 co-relation queries the response was YES. [2024-06-27 23:16:32,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56545 conditions, 5994 events. 3955/5994 cut-off events. For 522086/522098 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 32171 event pairs, 1327 based on Foata normal form. 4/5978 useless extension candidates. Maximal degree in co-relation 56436. Up to 5603 conditions per place. [2024-06-27 23:16:32,930 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 466 selfloop transitions, 74 changer transitions 0/549 dead transitions. [2024-06-27 23:16:32,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 549 transitions, 11080 flow [2024-06-27 23:16:32,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:16:32,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:16:32,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 193 transitions. [2024-06-27 23:16:32,932 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41774891774891776 [2024-06-27 23:16:32,932 INFO L175 Difference]: Start difference. First operand has 236 places, 513 transitions, 9792 flow. Second operand 11 states and 193 transitions. [2024-06-27 23:16:32,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 549 transitions, 11080 flow [2024-06-27 23:16:33,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 549 transitions, 10644 flow, removed 52 selfloop flow, removed 9 redundant places. [2024-06-27 23:16:33,554 INFO L231 Difference]: Finished difference. Result has 238 places, 513 transitions, 9519 flow [2024-06-27 23:16:33,555 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9356, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=439, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9519, PETRI_PLACES=238, PETRI_TRANSITIONS=513} [2024-06-27 23:16:33,555 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 195 predicate places. [2024-06-27 23:16:33,555 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 513 transitions, 9519 flow [2024-06-27 23:16:33,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 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) [2024-06-27 23:16:33,555 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:16:33,555 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:16:33,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-27 23:16:33,556 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:16:33,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:16:33,556 INFO L85 PathProgramCache]: Analyzing trace with hash 364181675, now seen corresponding path program 3 times [2024-06-27 23:16:33,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:16:33,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484937418] [2024-06-27 23:16:33,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:16:33,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:16:33,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:16:34,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:16:34,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:16:34,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484937418] [2024-06-27 23:16:34,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484937418] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:16:34,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:16:34,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:16:34,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792106626] [2024-06-27 23:16:34,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:16:34,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:16:34,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:16:34,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:16:34,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:16:34,797 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:16:34,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 513 transitions, 9519 flow. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:16:34,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:16:34,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:16:34,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:16:36,207 INFO L124 PetriNetUnfolderBase]: 3925/5931 cut-off events. [2024-06-27 23:16:36,207 INFO L125 PetriNetUnfolderBase]: For 530222/530289 co-relation queries the response was YES. [2024-06-27 23:16:36,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55382 conditions, 5931 events. 3925/5931 cut-off events. For 530222/530289 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 31971 event pairs, 1366 based on Foata normal form. 34/5928 useless extension candidates. Maximal degree in co-relation 55274. Up to 5706 conditions per place. [2024-06-27 23:16:36,266 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 485 selfloop transitions, 13 changer transitions 0/521 dead transitions. [2024-06-27 23:16:36,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 521 transitions, 10539 flow [2024-06-27 23:16:36,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:16:36,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:16:36,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 111 transitions. [2024-06-27 23:16:36,267 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37755102040816324 [2024-06-27 23:16:36,267 INFO L175 Difference]: Start difference. First operand has 238 places, 513 transitions, 9519 flow. Second operand 7 states and 111 transitions. [2024-06-27 23:16:36,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 521 transitions, 10539 flow [2024-06-27 23:16:36,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 521 transitions, 10344 flow, removed 19 selfloop flow, removed 10 redundant places. [2024-06-27 23:16:36,902 INFO L231 Difference]: Finished difference. Result has 235 places, 513 transitions, 9356 flow [2024-06-27 23:16:36,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9324, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=500, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9356, PETRI_PLACES=235, PETRI_TRANSITIONS=513} [2024-06-27 23:16:36,903 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 192 predicate places. [2024-06-27 23:16:36,903 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 513 transitions, 9356 flow [2024-06-27 23:16:36,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:16:36,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:16:36,903 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:16:36,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-27 23:16:36,904 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:16:36,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:16:36,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1529275432, now seen corresponding path program 3 times [2024-06-27 23:16:36,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:16:36,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440143548] [2024-06-27 23:16:36,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:16:36,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:16:36,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:16:38,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:16:38,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:16:38,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440143548] [2024-06-27 23:16:38,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440143548] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:16:38,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:16:38,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:16:38,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879198013] [2024-06-27 23:16:38,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:16:38,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:16:38,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:16:38,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:16:38,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:16:38,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-27 23:16:38,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 513 transitions, 9356 flow. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:16:38,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:16:38,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-27 23:16:38,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:16:40,326 INFO L124 PetriNetUnfolderBase]: 3775/5819 cut-off events. [2024-06-27 23:16:40,326 INFO L125 PetriNetUnfolderBase]: For 574883/574921 co-relation queries the response was YES. [2024-06-27 23:16:40,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55344 conditions, 5819 events. 3775/5819 cut-off events. For 574883/574921 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 32373 event pairs, 961 based on Foata normal form. 43/5807 useless extension candidates. Maximal degree in co-relation 55235. Up to 4339 conditions per place. [2024-06-27 23:16:40,395 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 266 selfloop transitions, 270 changer transitions 0/556 dead transitions. [2024-06-27 23:16:40,395 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 556 transitions, 10897 flow [2024-06-27 23:16:40,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:16:40,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:16:40,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 181 transitions. [2024-06-27 23:16:40,396 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5386904761904762 [2024-06-27 23:16:40,396 INFO L175 Difference]: Start difference. First operand has 235 places, 513 transitions, 9356 flow. Second operand 8 states and 181 transitions. [2024-06-27 23:16:40,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 556 transitions, 10897 flow [2024-06-27 23:16:41,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 556 transitions, 10869 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-27 23:16:41,334 INFO L231 Difference]: Finished difference. Result has 238 places, 514 transitions, 9913 flow [2024-06-27 23:16:41,334 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9328, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=269, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9913, PETRI_PLACES=238, PETRI_TRANSITIONS=514} [2024-06-27 23:16:41,335 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 195 predicate places. [2024-06-27 23:16:41,335 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 514 transitions, 9913 flow [2024-06-27 23:16:41,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:16:41,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:16:41,335 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:16:41,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-27 23:16:41,335 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:16:41,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:16:41,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1456216725, now seen corresponding path program 1 times [2024-06-27 23:16:41,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:16:41,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177608549] [2024-06-27 23:16:41,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:16:41,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:16:41,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:16:43,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:16:43,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:16:43,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177608549] [2024-06-27 23:16:43,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177608549] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:16:43,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:16:43,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:16:43,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755326426] [2024-06-27 23:16:43,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:16:43,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:16:43,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:16:43,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:16:43,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:16:43,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-27 23:16:43,302 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 514 transitions, 9913 flow. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:16:43,302 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:16:43,302 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-27 23:16:43,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:16:44,900 INFO L124 PetriNetUnfolderBase]: 4195/6289 cut-off events. [2024-06-27 23:16:44,900 INFO L125 PetriNetUnfolderBase]: For 548083/548083 co-relation queries the response was YES. [2024-06-27 23:16:44,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58726 conditions, 6289 events. 4195/6289 cut-off events. For 548083/548083 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 33303 event pairs, 1510 based on Foata normal form. 1/6290 useless extension candidates. Maximal degree in co-relation 58617. Up to 6172 conditions per place. [2024-06-27 23:16:44,976 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 511 selfloop transitions, 18 changer transitions 0/532 dead transitions. [2024-06-27 23:16:44,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 532 transitions, 11185 flow [2024-06-27 23:16:44,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:16:44,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:16:44,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 103 transitions. [2024-06-27 23:16:44,977 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4087301587301587 [2024-06-27 23:16:44,977 INFO L175 Difference]: Start difference. First operand has 238 places, 514 transitions, 9913 flow. Second operand 6 states and 103 transitions. [2024-06-27 23:16:44,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 532 transitions, 11185 flow [2024-06-27 23:16:45,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 532 transitions, 10634 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-27 23:16:45,821 INFO L231 Difference]: Finished difference. Result has 238 places, 520 transitions, 9474 flow [2024-06-27 23:16:45,821 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9362, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=514, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=499, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=9474, PETRI_PLACES=238, PETRI_TRANSITIONS=520} [2024-06-27 23:16:45,822 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 195 predicate places. [2024-06-27 23:16:45,822 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 520 transitions, 9474 flow [2024-06-27 23:16:45,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:16:45,822 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:16:45,822 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:16:45,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-27 23:16:45,822 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:16:45,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:16:45,822 INFO L85 PathProgramCache]: Analyzing trace with hash 382062227, now seen corresponding path program 2 times [2024-06-27 23:16:45,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:16:45,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059784188] [2024-06-27 23:16:45,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:16:45,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:16:45,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:16:47,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:16:47,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:16:47,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059784188] [2024-06-27 23:16:47,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059784188] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:16:47,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:16:47,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:16:47,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729319789] [2024-06-27 23:16:47,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:16:47,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:16:47,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:16:47,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:16:47,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:16:47,432 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-27 23:16:47,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 520 transitions, 9474 flow. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:16:47,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:16:47,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-27 23:16:47,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:16:48,873 INFO L124 PetriNetUnfolderBase]: 4192/6286 cut-off events. [2024-06-27 23:16:48,873 INFO L125 PetriNetUnfolderBase]: For 555326/555328 co-relation queries the response was YES. [2024-06-27 23:16:48,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58081 conditions, 6286 events. 4192/6286 cut-off events. For 555326/555328 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 33284 event pairs, 1507 based on Foata normal form. 3/6289 useless extension candidates. Maximal degree in co-relation 57970. Up to 6169 conditions per place. [2024-06-27 23:16:49,079 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 507 selfloop transitions, 18 changer transitions 0/528 dead transitions. [2024-06-27 23:16:49,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 528 transitions, 10548 flow [2024-06-27 23:16:49,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:16:49,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:16:49,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 99 transitions. [2024-06-27 23:16:49,080 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39285714285714285 [2024-06-27 23:16:49,080 INFO L175 Difference]: Start difference. First operand has 238 places, 520 transitions, 9474 flow. Second operand 6 states and 99 transitions. [2024-06-27 23:16:49,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 528 transitions, 10548 flow [2024-06-27 23:16:49,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 528 transitions, 10499 flow, removed 20 selfloop flow, removed 2 redundant places. [2024-06-27 23:16:49,948 INFO L231 Difference]: Finished difference. Result has 242 places, 520 transitions, 9469 flow [2024-06-27 23:16:49,948 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9425, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=520, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=502, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=9469, PETRI_PLACES=242, PETRI_TRANSITIONS=520} [2024-06-27 23:16:49,948 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 199 predicate places. [2024-06-27 23:16:49,949 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 520 transitions, 9469 flow [2024-06-27 23:16:49,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:16:49,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:16:49,949 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:16:49,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-27 23:16:49,949 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:16:49,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:16:49,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1075308104, now seen corresponding path program 4 times [2024-06-27 23:16:49,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:16:49,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959290602] [2024-06-27 23:16:49,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:16:49,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:16:49,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:16:51,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:16:51,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:16:51,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959290602] [2024-06-27 23:16:51,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959290602] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:16:51,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:16:51,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:16:51,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128711454] [2024-06-27 23:16:51,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:16:51,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:16:51,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:16:51,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:16:51,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:16:51,792 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 42 [2024-06-27 23:16:51,792 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 520 transitions, 9469 flow. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:16:51,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:16:51,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 42 [2024-06-27 23:16:51,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:16:53,422 INFO L124 PetriNetUnfolderBase]: 3639/5884 cut-off events. [2024-06-27 23:16:53,423 INFO L125 PetriNetUnfolderBase]: For 631625/631843 co-relation queries the response was YES. [2024-06-27 23:16:53,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56719 conditions, 5884 events. 3639/5884 cut-off events. For 631625/631843 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 35842 event pairs, 408 based on Foata normal form. 68/5833 useless extension candidates. Maximal degree in co-relation 56604. Up to 2334 conditions per place. [2024-06-27 23:16:53,495 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 190 selfloop transitions, 283 changer transitions 0/582 dead transitions. [2024-06-27 23:16:53,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 582 transitions, 11146 flow [2024-06-27 23:16:53,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:16:53,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:16:53,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 184 transitions. [2024-06-27 23:16:53,496 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5476190476190477 [2024-06-27 23:16:53,496 INFO L175 Difference]: Start difference. First operand has 242 places, 520 transitions, 9469 flow. Second operand 8 states and 184 transitions. [2024-06-27 23:16:53,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 582 transitions, 11146 flow [2024-06-27 23:16:54,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 582 transitions, 11106 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-06-27 23:16:54,583 INFO L231 Difference]: Finished difference. Result has 248 places, 537 transitions, 10604 flow [2024-06-27 23:16:54,583 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9429, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=520, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=266, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10604, PETRI_PLACES=248, PETRI_TRANSITIONS=537} [2024-06-27 23:16:54,583 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 205 predicate places. [2024-06-27 23:16:54,583 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 537 transitions, 10604 flow [2024-06-27 23:16:54,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:16:54,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:16:54,584 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:16:54,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-27 23:16:54,584 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:16:54,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:16:54,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1845002094, now seen corresponding path program 5 times [2024-06-27 23:16:54,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:16:54,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178574546] [2024-06-27 23:16:54,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:16:54,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:16:54,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:16:56,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:16:56,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:16:56,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178574546] [2024-06-27 23:16:56,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178574546] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:16:56,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:16:56,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:16:56,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546064399] [2024-06-27 23:16:56,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:16:56,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:16:56,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:16:56,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:16:56,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:16:56,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-27 23:16:56,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 537 transitions, 10604 flow. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:16:56,624 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:16:56,624 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-27 23:16:56,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:16:58,316 INFO L124 PetriNetUnfolderBase]: 4414/6840 cut-off events. [2024-06-27 23:16:58,317 INFO L125 PetriNetUnfolderBase]: For 785590/785648 co-relation queries the response was YES. [2024-06-27 23:16:58,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69338 conditions, 6840 events. 4414/6840 cut-off events. For 785590/785648 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 39823 event pairs, 775 based on Foata normal form. 48/6802 useless extension candidates. Maximal degree in co-relation 69219. Up to 3380 conditions per place. [2024-06-27 23:16:58,548 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 232 selfloop transitions, 338 changer transitions 0/592 dead transitions. [2024-06-27 23:16:58,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 592 transitions, 12804 flow [2024-06-27 23:16:58,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:16:58,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:16:58,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 202 transitions. [2024-06-27 23:16:58,551 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5343915343915344 [2024-06-27 23:16:58,551 INFO L175 Difference]: Start difference. First operand has 248 places, 537 transitions, 10604 flow. Second operand 9 states and 202 transitions. [2024-06-27 23:16:58,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 592 transitions, 12804 flow [2024-06-27 23:16:59,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 592 transitions, 12578 flow, removed 20 selfloop flow, removed 4 redundant places. [2024-06-27 23:16:59,575 INFO L231 Difference]: Finished difference. Result has 253 places, 541 transitions, 11235 flow [2024-06-27 23:16:59,576 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=10394, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=537, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=336, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11235, PETRI_PLACES=253, PETRI_TRANSITIONS=541} [2024-06-27 23:16:59,576 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 210 predicate places. [2024-06-27 23:16:59,576 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 541 transitions, 11235 flow [2024-06-27 23:16:59,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:16:59,577 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:16:59,577 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:16:59,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-27 23:16:59,577 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:16:59,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:16:59,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1559719912, now seen corresponding path program 6 times [2024-06-27 23:16:59,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:16:59,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481464313] [2024-06-27 23:16:59,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:16:59,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:16:59,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:17:01,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:17:01,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:17:01,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481464313] [2024-06-27 23:17:01,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481464313] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:17:01,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:17:01,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:17:01,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013410289] [2024-06-27 23:17:01,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:17:01,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:17:01,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:17:01,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:17:01,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:17:01,730 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-27 23:17:01,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 541 transitions, 11235 flow. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:17:01,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:17:01,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-27 23:17:01,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:17:03,550 INFO L124 PetriNetUnfolderBase]: 4519/7041 cut-off events. [2024-06-27 23:17:03,550 INFO L125 PetriNetUnfolderBase]: For 803446/803487 co-relation queries the response was YES. [2024-06-27 23:17:03,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70903 conditions, 7041 events. 4519/7041 cut-off events. For 803446/803487 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 41584 event pairs, 1233 based on Foata normal form. 51/7019 useless extension candidates. Maximal degree in co-relation 70784. Up to 5397 conditions per place. [2024-06-27 23:17:03,644 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 287 selfloop transitions, 279 changer transitions 0/588 dead transitions. [2024-06-27 23:17:03,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 588 transitions, 12976 flow [2024-06-27 23:17:03,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:17:03,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:17:03,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 194 transitions. [2024-06-27 23:17:03,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5132275132275133 [2024-06-27 23:17:03,645 INFO L175 Difference]: Start difference. First operand has 253 places, 541 transitions, 11235 flow. Second operand 9 states and 194 transitions. [2024-06-27 23:17:03,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 588 transitions, 12976 flow [2024-06-27 23:17:04,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 588 transitions, 12515 flow, removed 28 selfloop flow, removed 5 redundant places. [2024-06-27 23:17:04,789 INFO L231 Difference]: Finished difference. Result has 257 places, 543 transitions, 11426 flow [2024-06-27 23:17:04,789 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=10778, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=541, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=277, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11426, PETRI_PLACES=257, PETRI_TRANSITIONS=543} [2024-06-27 23:17:04,789 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 214 predicate places. [2024-06-27 23:17:04,789 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 543 transitions, 11426 flow [2024-06-27 23:17:04,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:17:04,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:17:04,790 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:17:04,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-27 23:17:04,790 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:17:04,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:17:04,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1848663504, now seen corresponding path program 7 times [2024-06-27 23:17:04,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:17:04,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318806199] [2024-06-27 23:17:04,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:17:04,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:17:04,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:17:06,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:17:06,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:17:06,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318806199] [2024-06-27 23:17:06,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318806199] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:17:06,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:17:06,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:17:06,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960349068] [2024-06-27 23:17:06,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:17:06,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:17:06,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:17:06,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:17:06,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:17:06,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-27 23:17:06,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 543 transitions, 11426 flow. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:17:06,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:17:06,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-27 23:17:06,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:17:08,605 INFO L124 PetriNetUnfolderBase]: 4616/7211 cut-off events. [2024-06-27 23:17:08,605 INFO L125 PetriNetUnfolderBase]: For 816015/816056 co-relation queries the response was YES. [2024-06-27 23:17:08,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72787 conditions, 7211 events. 4616/7211 cut-off events. For 816015/816056 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 43011 event pairs, 1209 based on Foata normal form. 49/7191 useless extension candidates. Maximal degree in co-relation 72666. Up to 5173 conditions per place. [2024-06-27 23:17:08,704 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 286 selfloop transitions, 285 changer transitions 0/593 dead transitions. [2024-06-27 23:17:08,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 593 transitions, 13189 flow [2024-06-27 23:17:08,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:17:08,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:17:08,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 196 transitions. [2024-06-27 23:17:08,714 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5185185185185185 [2024-06-27 23:17:08,714 INFO L175 Difference]: Start difference. First operand has 257 places, 543 transitions, 11426 flow. Second operand 9 states and 196 transitions. [2024-06-27 23:17:08,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 593 transitions, 13189 flow [2024-06-27 23:17:10,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 593 transitions, 12605 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-27 23:17:10,079 INFO L231 Difference]: Finished difference. Result has 259 places, 545 transitions, 11503 flow [2024-06-27 23:17:10,079 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=10842, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=543, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=283, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11503, PETRI_PLACES=259, PETRI_TRANSITIONS=545} [2024-06-27 23:17:10,079 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 216 predicate places. [2024-06-27 23:17:10,079 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 545 transitions, 11503 flow [2024-06-27 23:17:10,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:17:10,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:17:10,080 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:17:10,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-27 23:17:10,080 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:17:10,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:17:10,080 INFO L85 PathProgramCache]: Analyzing trace with hash 206257689, now seen corresponding path program 1 times [2024-06-27 23:17:10,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:17:10,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028962429] [2024-06-27 23:17:10,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:17:10,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:17:10,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:17:11,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:17:11,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:17:11,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028962429] [2024-06-27 23:17:11,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028962429] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:17:11,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:17:11,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:17:11,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257791878] [2024-06-27 23:17:11,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:17:11,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:17:11,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:17:11,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:17:11,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:17:11,604 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-27 23:17:11,604 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 545 transitions, 11503 flow. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 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) [2024-06-27 23:17:11,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:17:11,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-27 23:17:11,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:17:13,490 INFO L124 PetriNetUnfolderBase]: 5127/7787 cut-off events. [2024-06-27 23:17:13,490 INFO L125 PetriNetUnfolderBase]: For 762058/762069 co-relation queries the response was YES. [2024-06-27 23:17:13,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75685 conditions, 7787 events. 5127/7787 cut-off events. For 762058/762069 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 44313 event pairs, 1475 based on Foata normal form. 12/7799 useless extension candidates. Maximal degree in co-relation 75563. Up to 7407 conditions per place. [2024-06-27 23:17:13,588 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 507 selfloop transitions, 78 changer transitions 0/588 dead transitions. [2024-06-27 23:17:13,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 588 transitions, 13312 flow [2024-06-27 23:17:13,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:17:13,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:17:13,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-06-27 23:17:13,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-27 23:17:13,589 INFO L175 Difference]: Start difference. First operand has 259 places, 545 transitions, 11503 flow. Second operand 8 states and 147 transitions. [2024-06-27 23:17:13,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 588 transitions, 13312 flow [2024-06-27 23:17:14,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 588 transitions, 12695 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-27 23:17:14,983 INFO L231 Difference]: Finished difference. Result has 263 places, 563 transitions, 11472 flow [2024-06-27 23:17:14,983 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=10892, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=545, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=477, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11472, PETRI_PLACES=263, PETRI_TRANSITIONS=563} [2024-06-27 23:17:14,984 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 220 predicate places. [2024-06-27 23:17:14,984 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 563 transitions, 11472 flow [2024-06-27 23:17:14,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 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) [2024-06-27 23:17:14,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:17:14,984 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:17:14,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-27 23:17:14,985 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:17:14,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:17:14,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1055893046, now seen corresponding path program 8 times [2024-06-27 23:17:14,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:17:14,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351855802] [2024-06-27 23:17:14,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:17:14,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:17:15,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:17:16,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:17:16,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:17:16,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351855802] [2024-06-27 23:17:16,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351855802] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:17:16,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:17:16,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:17:16,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485806444] [2024-06-27 23:17:16,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:17:16,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:17:16,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:17:16,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:17:16,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:17:17,031 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-27 23:17:17,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 563 transitions, 11472 flow. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:17:17,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:17:17,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-27 23:17:17,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:17:18,976 INFO L124 PetriNetUnfolderBase]: 4800/7497 cut-off events. [2024-06-27 23:17:18,976 INFO L125 PetriNetUnfolderBase]: For 855144/855177 co-relation queries the response was YES. [2024-06-27 23:17:19,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75052 conditions, 7497 events. 4800/7497 cut-off events. For 855144/855177 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 45029 event pairs, 996 based on Foata normal form. 48/7478 useless extension candidates. Maximal degree in co-relation 74926. Up to 5023 conditions per place. [2024-06-27 23:17:19,079 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 261 selfloop transitions, 336 changer transitions 0/622 dead transitions. [2024-06-27 23:17:19,079 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 622 transitions, 13783 flow [2024-06-27 23:17:19,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:17:19,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:17:19,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 197 transitions. [2024-06-27 23:17:19,080 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5863095238095238 [2024-06-27 23:17:19,080 INFO L175 Difference]: Start difference. First operand has 263 places, 563 transitions, 11472 flow. Second operand 8 states and 197 transitions. [2024-06-27 23:17:19,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 622 transitions, 13783 flow [2024-06-27 23:17:20,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 622 transitions, 13711 flow, removed 35 selfloop flow, removed 1 redundant places. [2024-06-27 23:17:20,497 INFO L231 Difference]: Finished difference. Result has 270 places, 565 transitions, 12163 flow [2024-06-27 23:17:20,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=11400, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=563, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=334, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12163, PETRI_PLACES=270, PETRI_TRANSITIONS=565} [2024-06-27 23:17:20,497 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 227 predicate places. [2024-06-27 23:17:20,497 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 565 transitions, 12163 flow [2024-06-27 23:17:20,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:17:20,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:17:20,498 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:17:20,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-27 23:17:20,498 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:17:20,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:17:20,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1971613352, now seen corresponding path program 9 times [2024-06-27 23:17:20,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:17:20,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264344093] [2024-06-27 23:17:20,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:17:20,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:17:20,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:17:22,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:17:22,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:17:22,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264344093] [2024-06-27 23:17:22,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264344093] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:17:22,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:17:22,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:17:22,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245457280] [2024-06-27 23:17:22,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:17:22,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:17:22,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:17:22,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:17:22,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:17:22,504 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-27 23:17:22,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 565 transitions, 12163 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:17:22,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:17:22,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-27 23:17:22,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:17:24,619 INFO L124 PetriNetUnfolderBase]: 4964/7759 cut-off events. [2024-06-27 23:17:24,619 INFO L125 PetriNetUnfolderBase]: For 928781/928814 co-relation queries the response was YES. [2024-06-27 23:17:24,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79492 conditions, 7759 events. 4964/7759 cut-off events. For 928781/928814 co-relation queries the response was YES. Maximal size of possible extension queue 412. Compared 47181 event pairs, 1263 based on Foata normal form. 50/7725 useless extension candidates. Maximal degree in co-relation 79364. Up to 5747 conditions per place. [2024-06-27 23:17:24,719 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 263 selfloop transitions, 330 changer transitions 0/618 dead transitions. [2024-06-27 23:17:24,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 618 transitions, 14224 flow [2024-06-27 23:17:24,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:17:24,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:17:24,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 184 transitions. [2024-06-27 23:17:24,721 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5476190476190477 [2024-06-27 23:17:24,721 INFO L175 Difference]: Start difference. First operand has 270 places, 565 transitions, 12163 flow. Second operand 8 states and 184 transitions. [2024-06-27 23:17:24,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 618 transitions, 14224 flow [2024-06-27 23:17:26,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 618 transitions, 13433 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-27 23:17:26,285 INFO L231 Difference]: Finished difference. Result has 272 places, 567 transitions, 12134 flow [2024-06-27 23:17:26,286 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=11376, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=565, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=328, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12134, PETRI_PLACES=272, PETRI_TRANSITIONS=567} [2024-06-27 23:17:26,286 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 229 predicate places. [2024-06-27 23:17:26,286 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 567 transitions, 12134 flow [2024-06-27 23:17:26,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:17:26,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:17:26,286 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:17:26,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-27 23:17:26,286 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:17:26,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:17:26,287 INFO L85 PathProgramCache]: Analyzing trace with hash 1061611058, now seen corresponding path program 1 times [2024-06-27 23:17:26,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:17:26,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086979453] [2024-06-27 23:17:26,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:17:26,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:17:26,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:17:28,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:17:28,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:17:28,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086979453] [2024-06-27 23:17:28,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086979453] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:17:28,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:17:28,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:17:28,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187020493] [2024-06-27 23:17:28,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:17:28,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:17:28,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:17:28,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:17:28,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:17:28,297 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:17:28,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 567 transitions, 12134 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 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) [2024-06-27 23:17:28,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:17:28,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:17:28,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:17:30,785 INFO L124 PetriNetUnfolderBase]: 5344/8216 cut-off events. [2024-06-27 23:17:30,785 INFO L125 PetriNetUnfolderBase]: For 869343/869364 co-relation queries the response was YES. [2024-06-27 23:17:30,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81224 conditions, 8216 events. 5344/8216 cut-off events. For 869343/869364 co-relation queries the response was YES. Maximal size of possible extension queue 411. Compared 48422 event pairs, 1501 based on Foata normal form. 12/8213 useless extension candidates. Maximal degree in co-relation 81095. Up to 6950 conditions per place. [2024-06-27 23:17:30,883 INFO L140 encePairwiseOnDemand]: 27/42 looper letters, 364 selfloop transitions, 271 changer transitions 0/649 dead transitions. [2024-06-27 23:17:30,883 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 649 transitions, 15014 flow [2024-06-27 23:17:30,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:17:30,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:17:30,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 233 transitions. [2024-06-27 23:17:30,884 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4623015873015873 [2024-06-27 23:17:30,884 INFO L175 Difference]: Start difference. First operand has 272 places, 567 transitions, 12134 flow. Second operand 12 states and 233 transitions. [2024-06-27 23:17:30,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 649 transitions, 15014 flow [2024-06-27 23:17:32,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 649 transitions, 14275 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-27 23:17:32,351 INFO L231 Difference]: Finished difference. Result has 279 places, 585 transitions, 12446 flow [2024-06-27 23:17:32,351 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=11435, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=567, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=253, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=12446, PETRI_PLACES=279, PETRI_TRANSITIONS=585} [2024-06-27 23:17:32,352 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 236 predicate places. [2024-06-27 23:17:32,352 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 585 transitions, 12446 flow [2024-06-27 23:17:32,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 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) [2024-06-27 23:17:32,352 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:17:32,352 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:17:32,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-27 23:17:32,352 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:17:32,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:17:32,352 INFO L85 PathProgramCache]: Analyzing trace with hash -652562407, now seen corresponding path program 1 times [2024-06-27 23:17:32,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:17:32,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569811069] [2024-06-27 23:17:32,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:17:32,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:17:32,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:17:34,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:17:34,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:17:34,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569811069] [2024-06-27 23:17:34,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569811069] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:17:34,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:17:34,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:17:34,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671442534] [2024-06-27 23:17:34,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:17:34,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:17:34,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:17:34,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:17:34,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:17:34,868 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:17:34,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 585 transitions, 12446 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:17:34,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:17:34,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:17:34,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:17:37,369 INFO L124 PetriNetUnfolderBase]: 5410/8318 cut-off events. [2024-06-27 23:17:37,369 INFO L125 PetriNetUnfolderBase]: For 911221/911242 co-relation queries the response was YES. [2024-06-27 23:17:37,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82077 conditions, 8318 events. 5410/8318 cut-off events. For 911221/911242 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 49247 event pairs, 1516 based on Foata normal form. 20/8313 useless extension candidates. Maximal degree in co-relation 81945. Up to 6990 conditions per place. [2024-06-27 23:17:37,466 INFO L140 encePairwiseOnDemand]: 28/42 looper letters, 355 selfloop transitions, 273 changer transitions 0/642 dead transitions. [2024-06-27 23:17:37,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 642 transitions, 14665 flow [2024-06-27 23:17:37,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:17:37,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:17:37,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 189 transitions. [2024-06-27 23:17:37,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 23:17:37,467 INFO L175 Difference]: Start difference. First operand has 279 places, 585 transitions, 12446 flow. Second operand 9 states and 189 transitions. [2024-06-27 23:17:37,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 642 transitions, 14665 flow [2024-06-27 23:17:38,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 642 transitions, 14025 flow, removed 51 selfloop flow, removed 8 redundant places. [2024-06-27 23:17:38,897 INFO L231 Difference]: Finished difference. Result has 280 places, 590 transitions, 12512 flow [2024-06-27 23:17:38,897 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=11806, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=585, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=268, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12512, PETRI_PLACES=280, PETRI_TRANSITIONS=590} [2024-06-27 23:17:38,898 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 237 predicate places. [2024-06-27 23:17:38,898 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 590 transitions, 12512 flow [2024-06-27 23:17:38,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:17:38,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:17:38,898 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:17:38,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-27 23:17:38,898 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:17:38,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:17:38,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1804092926, now seen corresponding path program 10 times [2024-06-27 23:17:38,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:17:38,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402547500] [2024-06-27 23:17:38,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:17:38,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:17:38,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:17:40,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:17:40,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:17:40,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402547500] [2024-06-27 23:17:40,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402547500] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:17:40,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:17:40,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:17:40,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771126069] [2024-06-27 23:17:40,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:17:40,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:17:40,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:17:40,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:17:40,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:17:41,054 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-27 23:17:41,054 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 590 transitions, 12512 flow. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:17:41,054 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:17:41,054 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-27 23:17:41,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:17:43,347 INFO L124 PetriNetUnfolderBase]: 5225/8167 cut-off events. [2024-06-27 23:17:43,347 INFO L125 PetriNetUnfolderBase]: For 1019564/1019602 co-relation queries the response was YES. [2024-06-27 23:17:43,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83291 conditions, 8167 events. 5225/8167 cut-off events. For 1019564/1019602 co-relation queries the response was YES. Maximal size of possible extension queue 433. Compared 50116 event pairs, 1380 based on Foata normal form. 52/8125 useless extension candidates. Maximal degree in co-relation 83159. Up to 6486 conditions per place. [2024-06-27 23:17:43,444 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 303 selfloop transitions, 311 changer transitions 0/641 dead transitions. [2024-06-27 23:17:43,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 641 transitions, 14656 flow [2024-06-27 23:17:43,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:17:43,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:17:43,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 198 transitions. [2024-06-27 23:17:43,446 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2024-06-27 23:17:43,446 INFO L175 Difference]: Start difference. First operand has 280 places, 590 transitions, 12512 flow. Second operand 9 states and 198 transitions. [2024-06-27 23:17:43,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 641 transitions, 14656 flow [2024-06-27 23:17:45,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 641 transitions, 14002 flow, removed 59 selfloop flow, removed 6 redundant places. [2024-06-27 23:17:45,024 INFO L231 Difference]: Finished difference. Result has 283 places, 592 transitions, 12590 flow [2024-06-27 23:17:45,024 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=11866, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=590, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=309, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12590, PETRI_PLACES=283, PETRI_TRANSITIONS=592} [2024-06-27 23:17:45,024 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 240 predicate places. [2024-06-27 23:17:45,024 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 592 transitions, 12590 flow [2024-06-27 23:17:45,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:17:45,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:17:45,024 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:17:45,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-27 23:17:45,025 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:17:45,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:17:45,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1061409248, now seen corresponding path program 2 times [2024-06-27 23:17:45,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:17:45,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512574529] [2024-06-27 23:17:45,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:17:45,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:17:45,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:17:46,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:17:46,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:17:46,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512574529] [2024-06-27 23:17:46,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512574529] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:17:46,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:17:46,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:17:46,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127747782] [2024-06-27 23:17:46,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:17:46,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:17:46,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:17:46,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:17:46,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:17:46,991 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:17:46,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 592 transitions, 12590 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 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) [2024-06-27 23:17:46,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:17:46,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:17:46,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:17:49,574 INFO L124 PetriNetUnfolderBase]: 5555/8568 cut-off events. [2024-06-27 23:17:49,574 INFO L125 PetriNetUnfolderBase]: For 941343/941364 co-relation queries the response was YES. [2024-06-27 23:17:49,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84384 conditions, 8568 events. 5555/8568 cut-off events. For 941343/941364 co-relation queries the response was YES. Maximal size of possible extension queue 431. Compared 51342 event pairs, 1543 based on Foata normal form. 12/8565 useless extension candidates. Maximal degree in co-relation 84250. Up to 7305 conditions per place. [2024-06-27 23:17:49,671 INFO L140 encePairwiseOnDemand]: 27/42 looper letters, 363 selfloop transitions, 269 changer transitions 0/646 dead transitions. [2024-06-27 23:17:49,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 646 transitions, 14748 flow [2024-06-27 23:17:49,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:17:49,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:17:49,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 200 transitions. [2024-06-27 23:17:49,672 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2024-06-27 23:17:49,672 INFO L175 Difference]: Start difference. First operand has 283 places, 592 transitions, 12590 flow. Second operand 10 states and 200 transitions. [2024-06-27 23:17:49,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 646 transitions, 14748 flow [2024-06-27 23:17:51,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 646 transitions, 14026 flow, removed 49 selfloop flow, removed 7 redundant places. [2024-06-27 23:17:51,151 INFO L231 Difference]: Finished difference. Result has 286 places, 592 transitions, 12433 flow [2024-06-27 23:17:51,151 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=11876, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=592, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=269, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12433, PETRI_PLACES=286, PETRI_TRANSITIONS=592} [2024-06-27 23:17:51,152 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 243 predicate places. [2024-06-27 23:17:51,152 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 592 transitions, 12433 flow [2024-06-27 23:17:51,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 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) [2024-06-27 23:17:51,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:17:51,152 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:17:51,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-27 23:17:51,152 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:17:51,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:17:51,152 INFO L85 PathProgramCache]: Analyzing trace with hash -652777888, now seen corresponding path program 11 times [2024-06-27 23:17:51,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:17:51,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266330345] [2024-06-27 23:17:51,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:17:51,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:17:51,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:17:53,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:17:53,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:17:53,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266330345] [2024-06-27 23:17:53,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266330345] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:17:53,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:17:53,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:17:53,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624989081] [2024-06-27 23:17:53,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:17:53,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:17:53,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:17:53,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:17:53,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:17:53,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-27 23:17:53,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 592 transitions, 12433 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:17:53,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:17:53,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-27 23:17:53,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:17:56,058 INFO L124 PetriNetUnfolderBase]: 5398/8453 cut-off events. [2024-06-27 23:17:56,059 INFO L125 PetriNetUnfolderBase]: For 1077854/1077895 co-relation queries the response was YES. [2024-06-27 23:17:56,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85338 conditions, 8453 events. 5398/8453 cut-off events. For 1077854/1077895 co-relation queries the response was YES. Maximal size of possible extension queue 449. Compared 52453 event pairs, 1432 based on Foata normal form. 51/8390 useless extension candidates. Maximal degree in co-relation 85203. Up to 6746 conditions per place. [2024-06-27 23:17:56,176 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 328 selfloop transitions, 291 changer transitions 0/646 dead transitions. [2024-06-27 23:17:56,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 646 transitions, 14645 flow [2024-06-27 23:17:56,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:17:56,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:17:56,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 213 transitions. [2024-06-27 23:17:56,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5071428571428571 [2024-06-27 23:17:56,177 INFO L175 Difference]: Start difference. First operand has 286 places, 592 transitions, 12433 flow. Second operand 10 states and 213 transitions. [2024-06-27 23:17:56,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 646 transitions, 14645 flow [2024-06-27 23:17:58,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 646 transitions, 14097 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-27 23:17:58,011 INFO L231 Difference]: Finished difference. Result has 287 places, 594 transitions, 12583 flow [2024-06-27 23:17:58,012 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=11895, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=592, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=289, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12583, PETRI_PLACES=287, PETRI_TRANSITIONS=594} [2024-06-27 23:17:58,012 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 244 predicate places. [2024-06-27 23:17:58,012 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 594 transitions, 12583 flow [2024-06-27 23:17:58,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:17:58,012 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:17:58,012 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:17:58,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-27 23:17:58,013 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:17:58,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:17:58,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1804098878, now seen corresponding path program 3 times [2024-06-27 23:17:58,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:17:58,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15644864] [2024-06-27 23:17:58,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:17:58,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:17:58,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:17:59,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:17:59,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:17:59,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15644864] [2024-06-27 23:17:59,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15644864] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:17:59,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:17:59,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:17:59,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089766371] [2024-06-27 23:17:59,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:17:59,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:17:59,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:17:59,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:17:59,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:17:59,824 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:17:59,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 594 transitions, 12583 flow. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:17:59,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:17:59,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:17:59,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:18:02,243 INFO L124 PetriNetUnfolderBase]: 5771/8914 cut-off events. [2024-06-27 23:18:02,243 INFO L125 PetriNetUnfolderBase]: For 999055/999073 co-relation queries the response was YES. [2024-06-27 23:18:02,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87717 conditions, 8914 events. 5771/8914 cut-off events. For 999055/999073 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 53940 event pairs, 1606 based on Foata normal form. 10/8909 useless extension candidates. Maximal degree in co-relation 87581. Up to 7641 conditions per place. [2024-06-27 23:18:02,380 INFO L140 encePairwiseOnDemand]: 27/42 looper letters, 352 selfloop transitions, 304 changer transitions 0/670 dead transitions. [2024-06-27 23:18:02,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 670 transitions, 15450 flow [2024-06-27 23:18:02,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:18:02,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:18:02,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 183 transitions. [2024-06-27 23:18:02,382 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48412698412698413 [2024-06-27 23:18:02,382 INFO L175 Difference]: Start difference. First operand has 287 places, 594 transitions, 12583 flow. Second operand 9 states and 183 transitions. [2024-06-27 23:18:02,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 670 transitions, 15450 flow [2024-06-27 23:18:04,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 670 transitions, 14778 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-27 23:18:04,192 INFO L231 Difference]: Finished difference. Result has 290 places, 623 transitions, 13422 flow [2024-06-27 23:18:04,193 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=11959, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=594, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=275, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=313, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13422, PETRI_PLACES=290, PETRI_TRANSITIONS=623} [2024-06-27 23:18:04,193 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 247 predicate places. [2024-06-27 23:18:04,193 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 623 transitions, 13422 flow [2024-06-27 23:18:04,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:18:04,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:18:04,193 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:18:04,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-27 23:18:04,193 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:18:04,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:18:04,194 INFO L85 PathProgramCache]: Analyzing trace with hash -32632621, now seen corresponding path program 2 times [2024-06-27 23:18:04,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:18:04,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247423753] [2024-06-27 23:18:04,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:18:04,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:18:04,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:18:05,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:18:05,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:18:05,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247423753] [2024-06-27 23:18:05,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247423753] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:18:05,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:18:05,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:18:05,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863667305] [2024-06-27 23:18:05,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:18:05,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:18:05,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:18:05,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:18:05,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:18:06,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-27 23:18:06,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 623 transitions, 13422 flow. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 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) [2024-06-27 23:18:06,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:18:06,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-27 23:18:06,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:18:08,351 INFO L124 PetriNetUnfolderBase]: 5927/9077 cut-off events. [2024-06-27 23:18:08,351 INFO L125 PetriNetUnfolderBase]: For 995591/995600 co-relation queries the response was YES. [2024-06-27 23:18:08,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88931 conditions, 9077 events. 5927/9077 cut-off events. For 995591/995600 co-relation queries the response was YES. Maximal size of possible extension queue 448. Compared 54248 event pairs, 1691 based on Foata normal form. 10/9087 useless extension candidates. Maximal degree in co-relation 88792. Up to 8675 conditions per place. [2024-06-27 23:18:08,479 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 576 selfloop transitions, 84 changer transitions 0/663 dead transitions. [2024-06-27 23:18:08,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 663 transitions, 15452 flow [2024-06-27 23:18:08,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:18:08,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:18:08,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2024-06-27 23:18:08,481 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44047619047619047 [2024-06-27 23:18:08,481 INFO L175 Difference]: Start difference. First operand has 290 places, 623 transitions, 13422 flow. Second operand 8 states and 148 transitions. [2024-06-27 23:18:08,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 663 transitions, 15452 flow [2024-06-27 23:18:10,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 663 transitions, 15023 flow, removed 41 selfloop flow, removed 4 redundant places. [2024-06-27 23:18:10,469 INFO L231 Difference]: Finished difference. Result has 295 places, 639 transitions, 13426 flow [2024-06-27 23:18:10,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=12993, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=623, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=552, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=13426, PETRI_PLACES=295, PETRI_TRANSITIONS=639} [2024-06-27 23:18:10,470 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 252 predicate places. [2024-06-27 23:18:10,470 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 639 transitions, 13426 flow [2024-06-27 23:18:10,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 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) [2024-06-27 23:18:10,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:18:10,470 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:18:10,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-27 23:18:10,470 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:18:10,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:18:10,472 INFO L85 PathProgramCache]: Analyzing trace with hash -14746458, now seen corresponding path program 2 times [2024-06-27 23:18:10,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:18:10,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646411388] [2024-06-27 23:18:10,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:18:10,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:18:10,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:18:12,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:18:12,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:18:12,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646411388] [2024-06-27 23:18:12,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646411388] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:18:12,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:18:12,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:18:12,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83829153] [2024-06-27 23:18:12,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:18:12,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:18:12,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:18:12,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:18:12,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:18:12,294 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:18:12,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 639 transitions, 13426 flow. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:18:12,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:18:12,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:18:12,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:18:14,659 INFO L124 PetriNetUnfolderBase]: 5693/8796 cut-off events. [2024-06-27 23:18:14,659 INFO L125 PetriNetUnfolderBase]: For 1028443/1028496 co-relation queries the response was YES. [2024-06-27 23:18:14,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86769 conditions, 8796 events. 5693/8796 cut-off events. For 1028443/1028496 co-relation queries the response was YES. Maximal size of possible extension queue 459. Compared 53555 event pairs, 1904 based on Foata normal form. 30/8762 useless extension candidates. Maximal degree in co-relation 86628. Up to 8461 conditions per place. [2024-06-27 23:18:14,779 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 586 selfloop transitions, 43 changer transitions 0/664 dead transitions. [2024-06-27 23:18:14,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 664 transitions, 14959 flow [2024-06-27 23:18:14,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:18:14,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:18:14,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 142 transitions. [2024-06-27 23:18:14,780 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4226190476190476 [2024-06-27 23:18:14,780 INFO L175 Difference]: Start difference. First operand has 295 places, 639 transitions, 13426 flow. Second operand 8 states and 142 transitions. [2024-06-27 23:18:14,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 664 transitions, 14959 flow [2024-06-27 23:18:16,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 664 transitions, 14848 flow, removed 21 selfloop flow, removed 3 redundant places. [2024-06-27 23:18:16,907 INFO L231 Difference]: Finished difference. Result has 300 places, 645 transitions, 13486 flow [2024-06-27 23:18:16,907 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=13315, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=639, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=599, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=13486, PETRI_PLACES=300, PETRI_TRANSITIONS=645} [2024-06-27 23:18:16,907 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 257 predicate places. [2024-06-27 23:18:16,907 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 645 transitions, 13486 flow [2024-06-27 23:18:16,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:18:16,907 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:18:16,908 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:18:16,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-27 23:18:16,908 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:18:16,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:18:16,908 INFO L85 PathProgramCache]: Analyzing trace with hash -15323461, now seen corresponding path program 3 times [2024-06-27 23:18:16,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:18:16,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671474335] [2024-06-27 23:18:16,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:18:16,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:18:16,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:18:18,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:18:18,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:18:18,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671474335] [2024-06-27 23:18:18,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671474335] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:18:18,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:18:18,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:18:18,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149488387] [2024-06-27 23:18:18,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:18:18,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:18:18,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:18:18,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:18:18,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:18:18,719 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-27 23:18:18,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 645 transitions, 13486 flow. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 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) [2024-06-27 23:18:18,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:18:18,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-27 23:18:18,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:18:21,010 INFO L124 PetriNetUnfolderBase]: 5925/9077 cut-off events. [2024-06-27 23:18:21,010 INFO L125 PetriNetUnfolderBase]: For 1033079/1033091 co-relation queries the response was YES. [2024-06-27 23:18:21,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88898 conditions, 9077 events. 5925/9077 cut-off events. For 1033079/1033091 co-relation queries the response was YES. Maximal size of possible extension queue 448. Compared 54305 event pairs, 1695 based on Foata normal form. 12/9089 useless extension candidates. Maximal degree in co-relation 88756. Up to 8676 conditions per place. [2024-06-27 23:18:21,137 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 581 selfloop transitions, 81 changer transitions 0/665 dead transitions. [2024-06-27 23:18:21,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 665 transitions, 15166 flow [2024-06-27 23:18:21,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:18:21,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:18:21,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 142 transitions. [2024-06-27 23:18:21,138 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4226190476190476 [2024-06-27 23:18:21,138 INFO L175 Difference]: Start difference. First operand has 300 places, 645 transitions, 13486 flow. Second operand 8 states and 142 transitions. [2024-06-27 23:18:21,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 665 transitions, 15166 flow [2024-06-27 23:18:23,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 665 transitions, 15054 flow, removed 31 selfloop flow, removed 4 redundant places. [2024-06-27 23:18:23,051 INFO L231 Difference]: Finished difference. Result has 304 places, 645 transitions, 13545 flow [2024-06-27 23:18:23,052 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=13374, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=645, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=564, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=13545, PETRI_PLACES=304, PETRI_TRANSITIONS=645} [2024-06-27 23:18:23,052 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 261 predicate places. [2024-06-27 23:18:23,052 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 645 transitions, 13545 flow [2024-06-27 23:18:23,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 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) [2024-06-27 23:18:23,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:18:23,052 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:18:23,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-27 23:18:23,053 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:18:23,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:18:23,054 INFO L85 PathProgramCache]: Analyzing trace with hash -1040059730, now seen corresponding path program 4 times [2024-06-27 23:18:23,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:18:23,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603580388] [2024-06-27 23:18:23,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:18:23,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:18:23,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:18:24,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:18:24,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:18:24,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603580388] [2024-06-27 23:18:24,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603580388] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:18:24,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:18:24,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:18:24,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772261840] [2024-06-27 23:18:24,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:18:24,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:18:24,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:18:24,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:18:24,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:18:25,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:18:25,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 645 transitions, 13545 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:18:25,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:18:25,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:18:25,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:18:27,767 INFO L124 PetriNetUnfolderBase]: 5853/9032 cut-off events. [2024-06-27 23:18:27,768 INFO L125 PetriNetUnfolderBase]: For 1107577/1107590 co-relation queries the response was YES. [2024-06-27 23:18:27,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90127 conditions, 9032 events. 5853/9032 cut-off events. For 1107577/1107590 co-relation queries the response was YES. Maximal size of possible extension queue 457. Compared 54770 event pairs, 2166 based on Foata normal form. 6/9007 useless extension candidates. Maximal degree in co-relation 89983. Up to 7949 conditions per place. [2024-06-27 23:18:27,901 INFO L140 encePairwiseOnDemand]: 28/42 looper letters, 426 selfloop transitions, 255 changer transitions 0/699 dead transitions. [2024-06-27 23:18:27,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 699 transitions, 16081 flow [2024-06-27 23:18:27,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:18:27,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:18:27,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 217 transitions. [2024-06-27 23:18:27,903 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4305555555555556 [2024-06-27 23:18:27,903 INFO L175 Difference]: Start difference. First operand has 304 places, 645 transitions, 13545 flow. Second operand 12 states and 217 transitions. [2024-06-27 23:18:27,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 699 transitions, 16081 flow [2024-06-27 23:18:29,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 699 transitions, 15911 flow, removed 21 selfloop flow, removed 5 redundant places. [2024-06-27 23:18:29,872 INFO L231 Difference]: Finished difference. Result has 311 places, 657 transitions, 14249 flow [2024-06-27 23:18:29,873 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=13377, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=645, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=243, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=402, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=14249, PETRI_PLACES=311, PETRI_TRANSITIONS=657} [2024-06-27 23:18:29,873 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 268 predicate places. [2024-06-27 23:18:29,873 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 657 transitions, 14249 flow [2024-06-27 23:18:29,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:18:29,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:18:29,873 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:18:29,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-27 23:18:29,873 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:18:29,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:18:29,874 INFO L85 PathProgramCache]: Analyzing trace with hash -457151616, now seen corresponding path program 1 times [2024-06-27 23:18:29,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:18:29,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923799531] [2024-06-27 23:18:29,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:18:29,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:18:29,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:18:31,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:18:31,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:18:31,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923799531] [2024-06-27 23:18:31,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923799531] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:18:31,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:18:31,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:18:31,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777098351] [2024-06-27 23:18:31,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:18:31,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:18:31,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:18:31,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:18:31,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:18:32,038 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-27 23:18:32,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 657 transitions, 14249 flow. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:18:32,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:18:32,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-27 23:18:32,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:18:34,626 INFO L124 PetriNetUnfolderBase]: 6006/9192 cut-off events. [2024-06-27 23:18:34,626 INFO L125 PetriNetUnfolderBase]: For 1101614/1101626 co-relation queries the response was YES. [2024-06-27 23:18:34,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91674 conditions, 9192 events. 6006/9192 cut-off events. For 1101614/1101626 co-relation queries the response was YES. Maximal size of possible extension queue 459. Compared 55027 event pairs, 1727 based on Foata normal form. 12/9204 useless extension candidates. Maximal degree in co-relation 91529. Up to 8673 conditions per place. [2024-06-27 23:18:34,754 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 604 selfloop transitions, 94 changer transitions 0/701 dead transitions. [2024-06-27 23:18:34,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 701 transitions, 16667 flow [2024-06-27 23:18:34,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:18:34,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:18:34,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 161 transitions. [2024-06-27 23:18:34,755 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42592592592592593 [2024-06-27 23:18:34,755 INFO L175 Difference]: Start difference. First operand has 311 places, 657 transitions, 14249 flow. Second operand 9 states and 161 transitions. [2024-06-27 23:18:34,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 701 transitions, 16667 flow [2024-06-27 23:18:36,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 701 transitions, 15890 flow, removed 78 selfloop flow, removed 11 redundant places. [2024-06-27 23:18:36,716 INFO L231 Difference]: Finished difference. Result has 312 places, 675 transitions, 14025 flow [2024-06-27 23:18:36,716 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=13480, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=657, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=575, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=14025, PETRI_PLACES=312, PETRI_TRANSITIONS=675} [2024-06-27 23:18:36,716 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 269 predicate places. [2024-06-27 23:18:36,716 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 675 transitions, 14025 flow [2024-06-27 23:18:36,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:18:36,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:18:36,717 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:18:36,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-27 23:18:36,717 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:18:36,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:18:36,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1040052011, now seen corresponding path program 2 times [2024-06-27 23:18:36,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:18:36,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327035603] [2024-06-27 23:18:36,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:18:36,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:18:36,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:18:38,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:18:38,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:18:38,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327035603] [2024-06-27 23:18:38,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327035603] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:18:38,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:18:38,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:18:38,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282352985] [2024-06-27 23:18:38,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:18:38,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:18:38,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:18:38,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:18:38,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:18:38,870 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:18:38,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 675 transitions, 14025 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:18:38,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:18:38,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:18:38,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:18:41,385 INFO L124 PetriNetUnfolderBase]: 5975/9227 cut-off events. [2024-06-27 23:18:41,385 INFO L125 PetriNetUnfolderBase]: For 1170139/1170152 co-relation queries the response was YES. [2024-06-27 23:18:41,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93034 conditions, 9227 events. 5975/9227 cut-off events. For 1170139/1170152 co-relation queries the response was YES. Maximal size of possible extension queue 478. Compared 56336 event pairs, 2178 based on Foata normal form. 12/9208 useless extension candidates. Maximal degree in co-relation 92886. Up to 8052 conditions per place. [2024-06-27 23:18:41,522 INFO L140 encePairwiseOnDemand]: 28/42 looper letters, 435 selfloop transitions, 261 changer transitions 0/714 dead transitions. [2024-06-27 23:18:41,522 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 714 transitions, 16053 flow [2024-06-27 23:18:41,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:18:41,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:18:41,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 173 transitions. [2024-06-27 23:18:41,523 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4576719576719577 [2024-06-27 23:18:41,523 INFO L175 Difference]: Start difference. First operand has 312 places, 675 transitions, 14025 flow. Second operand 9 states and 173 transitions. [2024-06-27 23:18:41,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 714 transitions, 16053 flow [2024-06-27 23:18:43,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 714 transitions, 15908 flow, removed 55 selfloop flow, removed 2 redundant places. [2024-06-27 23:18:43,698 INFO L231 Difference]: Finished difference. Result has 319 places, 683 transitions, 14605 flow [2024-06-27 23:18:43,699 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=13881, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=675, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=253, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=414, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=14605, PETRI_PLACES=319, PETRI_TRANSITIONS=683} [2024-06-27 23:18:43,699 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 276 predicate places. [2024-06-27 23:18:43,699 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 683 transitions, 14605 flow [2024-06-27 23:18:43,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:18:43,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:18:43,700 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:18:43,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-27 23:18:43,700 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:18:43,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:18:43,700 INFO L85 PathProgramCache]: Analyzing trace with hash -967477678, now seen corresponding path program 5 times [2024-06-27 23:18:43,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:18:43,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622633346] [2024-06-27 23:18:43,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:18:43,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:18:43,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:18:45,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:18:45,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:18:45,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622633346] [2024-06-27 23:18:45,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622633346] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:18:45,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:18:45,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:18:45,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336348513] [2024-06-27 23:18:45,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:18:45,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:18:45,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:18:45,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:18:45,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:18:45,581 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:18:45,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 683 transitions, 14605 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:18:45,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:18:45,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:18:45,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:18:48,235 INFO L124 PetriNetUnfolderBase]: 5946/9172 cut-off events. [2024-06-27 23:18:48,235 INFO L125 PetriNetUnfolderBase]: For 1171080/1171093 co-relation queries the response was YES. [2024-06-27 23:18:48,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93723 conditions, 9172 events. 5946/9172 cut-off events. For 1171080/1171093 co-relation queries the response was YES. Maximal size of possible extension queue 476. Compared 55931 event pairs, 2162 based on Foata normal form. 5/9146 useless extension candidates. Maximal degree in co-relation 93572. Up to 8087 conditions per place. [2024-06-27 23:18:48,352 INFO L140 encePairwiseOnDemand]: 28/42 looper letters, 444 selfloop transitions, 253 changer transitions 0/715 dead transitions. [2024-06-27 23:18:48,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 715 transitions, 16516 flow [2024-06-27 23:18:48,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:18:48,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:18:48,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 175 transitions. [2024-06-27 23:18:48,354 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46296296296296297 [2024-06-27 23:18:48,354 INFO L175 Difference]: Start difference. First operand has 319 places, 683 transitions, 14605 flow. Second operand 9 states and 175 transitions. [2024-06-27 23:18:48,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 715 transitions, 16516 flow [2024-06-27 23:18:50,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 715 transitions, 15810 flow, removed 98 selfloop flow, removed 7 redundant places. [2024-06-27 23:18:50,329 INFO L231 Difference]: Finished difference. Result has 321 places, 683 transitions, 14434 flow [2024-06-27 23:18:50,330 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=13899, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=683, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=253, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=430, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=14434, PETRI_PLACES=321, PETRI_TRANSITIONS=683} [2024-06-27 23:18:50,330 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 278 predicate places. [2024-06-27 23:18:50,330 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 683 transitions, 14434 flow [2024-06-27 23:18:50,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:18:50,330 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:18:50,330 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:18:50,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-27 23:18:50,330 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:18:50,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:18:50,331 INFO L85 PathProgramCache]: Analyzing trace with hash 347068266, now seen corresponding path program 6 times [2024-06-27 23:18:50,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:18:50,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680948760] [2024-06-27 23:18:50,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:18:50,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:18:50,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:18:51,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:18:51,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:18:51,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680948760] [2024-06-27 23:18:51,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680948760] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:18:51,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:18:51,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:18:51,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30358351] [2024-06-27 23:18:51,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:18:51,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:18:51,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:18:51,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:18:51,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:18:52,019 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:18:52,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 683 transitions, 14434 flow. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:18:52,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:18:52,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:18:52,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:18:54,386 INFO L124 PetriNetUnfolderBase]: 5920/9127 cut-off events. [2024-06-27 23:18:54,386 INFO L125 PetriNetUnfolderBase]: For 1176677/1176690 co-relation queries the response was YES. [2024-06-27 23:18:54,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92703 conditions, 9127 events. 5920/9127 cut-off events. For 1176677/1176690 co-relation queries the response was YES. Maximal size of possible extension queue 478. Compared 55539 event pairs, 2148 based on Foata normal form. 4/9100 useless extension candidates. Maximal degree in co-relation 92551. Up to 8043 conditions per place. [2024-06-27 23:18:54,515 INFO L140 encePairwiseOnDemand]: 28/42 looper letters, 420 selfloop transitions, 273 changer transitions 0/711 dead transitions. [2024-06-27 23:18:54,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 711 transitions, 16286 flow [2024-06-27 23:18:54,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:18:54,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:18:54,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-06-27 23:18:54,516 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4417989417989418 [2024-06-27 23:18:54,517 INFO L175 Difference]: Start difference. First operand has 321 places, 683 transitions, 14434 flow. Second operand 9 states and 167 transitions. [2024-06-27 23:18:54,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 711 transitions, 16286 flow [2024-06-27 23:18:57,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 711 transitions, 15704 flow, removed 31 selfloop flow, removed 9 redundant places. [2024-06-27 23:18:57,404 INFO L231 Difference]: Finished difference. Result has 321 places, 683 transitions, 14426 flow [2024-06-27 23:18:57,404 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=13856, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=683, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=273, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=14426, PETRI_PLACES=321, PETRI_TRANSITIONS=683} [2024-06-27 23:18:57,405 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 278 predicate places. [2024-06-27 23:18:57,405 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 683 transitions, 14426 flow [2024-06-27 23:18:57,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:18:57,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:18:57,405 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:18:57,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-27 23:18:57,405 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:18:57,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:18:57,405 INFO L85 PathProgramCache]: Analyzing trace with hash -573388657, now seen corresponding path program 4 times [2024-06-27 23:18:57,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:18:57,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963060413] [2024-06-27 23:18:57,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:18:57,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:18:57,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:18:58,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:18:58,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:18:58,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963060413] [2024-06-27 23:18:58,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963060413] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:18:58,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:18:58,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:18:58,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520871872] [2024-06-27 23:18:58,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:18:58,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:18:58,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:18:58,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:18:58,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:18:58,881 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-27 23:18:58,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 683 transitions, 14426 flow. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 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) [2024-06-27 23:18:58,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:18:58,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-27 23:18:58,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:19:01,115 INFO L124 PetriNetUnfolderBase]: 6082/9307 cut-off events. [2024-06-27 23:19:01,115 INFO L125 PetriNetUnfolderBase]: For 1139311/1139313 co-relation queries the response was YES. [2024-06-27 23:19:01,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93137 conditions, 9307 events. 6082/9307 cut-off events. For 1139311/1139313 co-relation queries the response was YES. Maximal size of possible extension queue 474. Compared 56031 event pairs, 2311 based on Foata normal form. 4/9311 useless extension candidates. Maximal degree in co-relation 92985. Up to 8975 conditions per place. [2024-06-27 23:19:01,258 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 640 selfloop transitions, 76 changer transitions 0/719 dead transitions. [2024-06-27 23:19:01,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 719 transitions, 16473 flow [2024-06-27 23:19:01,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:19:01,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:19:01,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 127 transitions. [2024-06-27 23:19:01,259 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43197278911564624 [2024-06-27 23:19:01,259 INFO L175 Difference]: Start difference. First operand has 321 places, 683 transitions, 14426 flow. Second operand 7 states and 127 transitions. [2024-06-27 23:19:01,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 719 transitions, 16473 flow [2024-06-27 23:19:03,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 719 transitions, 15806 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-27 23:19:03,728 INFO L231 Difference]: Finished difference. Result has 321 places, 702 transitions, 14291 flow [2024-06-27 23:19:03,729 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=13763, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=683, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=611, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=14291, PETRI_PLACES=321, PETRI_TRANSITIONS=702} [2024-06-27 23:19:03,729 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 278 predicate places. [2024-06-27 23:19:03,729 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 702 transitions, 14291 flow [2024-06-27 23:19:03,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 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) [2024-06-27 23:19:03,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:19:03,729 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:19:03,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-27 23:19:03,729 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:19:03,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:19:03,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1543262185, now seen corresponding path program 5 times [2024-06-27 23:19:03,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:19:03,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019131876] [2024-06-27 23:19:03,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:19:03,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:19:03,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:19:05,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:19:05,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:19:05,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019131876] [2024-06-27 23:19:05,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019131876] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:19:05,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:19:05,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:19:05,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490457543] [2024-06-27 23:19:05,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:19:05,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:19:05,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:19:05,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:19:05,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:19:05,187 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-27 23:19:05,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 702 transitions, 14291 flow. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 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) [2024-06-27 23:19:05,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:19:05,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-27 23:19:05,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:19:07,644 INFO L124 PetriNetUnfolderBase]: 6110/9346 cut-off events. [2024-06-27 23:19:07,644 INFO L125 PetriNetUnfolderBase]: For 1136813/1136815 co-relation queries the response was YES. [2024-06-27 23:19:07,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93198 conditions, 9346 events. 6110/9346 cut-off events. For 1136813/1136815 co-relation queries the response was YES. Maximal size of possible extension queue 477. Compared 56200 event pairs, 2344 based on Foata normal form. 4/9350 useless extension candidates. Maximal degree in co-relation 93044. Up to 9003 conditions per place. [2024-06-27 23:19:07,758 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 646 selfloop transitions, 75 changer transitions 0/724 dead transitions. [2024-06-27 23:19:07,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 724 transitions, 16251 flow [2024-06-27 23:19:07,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:19:07,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:19:07,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 123 transitions. [2024-06-27 23:19:07,759 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41836734693877553 [2024-06-27 23:19:07,759 INFO L175 Difference]: Start difference. First operand has 321 places, 702 transitions, 14291 flow. Second operand 7 states and 123 transitions. [2024-06-27 23:19:07,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 724 transitions, 16251 flow [2024-06-27 23:19:10,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 724 transitions, 16146 flow, removed 18 selfloop flow, removed 3 redundant places. [2024-06-27 23:19:10,113 INFO L231 Difference]: Finished difference. Result has 326 places, 710 transitions, 14555 flow [2024-06-27 23:19:10,114 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=14192, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=702, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=633, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=14555, PETRI_PLACES=326, PETRI_TRANSITIONS=710} [2024-06-27 23:19:10,114 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 283 predicate places. [2024-06-27 23:19:10,114 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 710 transitions, 14555 flow [2024-06-27 23:19:10,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 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) [2024-06-27 23:19:10,114 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:19:10,114 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:19:10,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-27 23:19:10,114 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:19:10,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:19:10,115 INFO L85 PathProgramCache]: Analyzing trace with hash -1211649006, now seen corresponding path program 7 times [2024-06-27 23:19:10,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:19:10,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353532554] [2024-06-27 23:19:10,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:19:10,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:19:10,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:19:11,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:19:11,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:19:11,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353532554] [2024-06-27 23:19:11,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353532554] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:19:11,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:19:11,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:19:11,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52760368] [2024-06-27 23:19:11,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:19:11,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:19:11,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:19:11,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:19:11,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:19:12,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:19:12,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 710 transitions, 14555 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:19:12,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:19:12,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:19:12,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:19:14,796 INFO L124 PetriNetUnfolderBase]: 6069/9341 cut-off events. [2024-06-27 23:19:14,796 INFO L125 PetriNetUnfolderBase]: For 1226265/1226276 co-relation queries the response was YES. [2024-06-27 23:19:14,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95019 conditions, 9341 events. 6069/9341 cut-off events. For 1226265/1226276 co-relation queries the response was YES. Maximal size of possible extension queue 497. Compared 56919 event pairs, 2190 based on Foata normal form. 8/9318 useless extension candidates. Maximal degree in co-relation 94863. Up to 8811 conditions per place. [2024-06-27 23:19:14,929 INFO L140 encePairwiseOnDemand]: 27/42 looper letters, 651 selfloop transitions, 91 changer transitions 0/767 dead transitions. [2024-06-27 23:19:14,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 767 transitions, 16896 flow [2024-06-27 23:19:14,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:19:14,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:19:14,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 190 transitions. [2024-06-27 23:19:14,930 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41125541125541126 [2024-06-27 23:19:14,930 INFO L175 Difference]: Start difference. First operand has 326 places, 710 transitions, 14555 flow. Second operand 11 states and 190 transitions. [2024-06-27 23:19:14,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 767 transitions, 16896 flow [2024-06-27 23:19:17,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 767 transitions, 16771 flow, removed 28 selfloop flow, removed 3 redundant places. [2024-06-27 23:19:17,551 INFO L231 Difference]: Finished difference. Result has 334 places, 728 transitions, 15178 flow [2024-06-27 23:19:17,551 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=14430, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=710, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=619, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=15178, PETRI_PLACES=334, PETRI_TRANSITIONS=728} [2024-06-27 23:19:17,552 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 291 predicate places. [2024-06-27 23:19:17,552 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 728 transitions, 15178 flow [2024-06-27 23:19:17,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:19:17,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:19:17,552 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:19:17,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-27 23:19:17,552 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:19:17,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:19:17,553 INFO L85 PathProgramCache]: Analyzing trace with hash -2055739704, now seen corresponding path program 2 times [2024-06-27 23:19:17,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:19:17,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282362136] [2024-06-27 23:19:17,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:19:17,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:19:17,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:19:19,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:19:19,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:19:19,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282362136] [2024-06-27 23:19:19,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282362136] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:19:19,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:19:19,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:19:19,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061753884] [2024-06-27 23:19:19,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:19:19,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:19:19,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:19:19,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:19:19,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:19:19,695 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-27 23:19:19,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 728 transitions, 15178 flow. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:19:19,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:19:19,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-27 23:19:19,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:19:22,364 INFO L124 PetriNetUnfolderBase]: 6188/9442 cut-off events. [2024-06-27 23:19:22,365 INFO L125 PetriNetUnfolderBase]: For 1190506/1190515 co-relation queries the response was YES. [2024-06-27 23:19:22,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95250 conditions, 9442 events. 6188/9442 cut-off events. For 1190506/1190515 co-relation queries the response was YES. Maximal size of possible extension queue 484. Compared 56635 event pairs, 1731 based on Foata normal form. 10/9452 useless extension candidates. Maximal degree in co-relation 95093. Up to 8851 conditions per place. [2024-06-27 23:19:22,521 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 639 selfloop transitions, 119 changer transitions 0/761 dead transitions. [2024-06-27 23:19:22,521 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 761 transitions, 17553 flow [2024-06-27 23:19:22,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:19:22,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:19:22,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 166 transitions. [2024-06-27 23:19:22,522 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43915343915343913 [2024-06-27 23:19:22,522 INFO L175 Difference]: Start difference. First operand has 334 places, 728 transitions, 15178 flow. Second operand 9 states and 166 transitions. [2024-06-27 23:19:22,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 761 transitions, 17553 flow [2024-06-27 23:19:25,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 761 transitions, 17195 flow, removed 100 selfloop flow, removed 9 redundant places. [2024-06-27 23:19:25,611 INFO L231 Difference]: Finished difference. Result has 334 places, 732 transitions, 15126 flow [2024-06-27 23:19:25,611 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=14820, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=728, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=612, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15126, PETRI_PLACES=334, PETRI_TRANSITIONS=732} [2024-06-27 23:19:25,611 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 291 predicate places. [2024-06-27 23:19:25,611 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 732 transitions, 15126 flow [2024-06-27 23:19:25,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:19:25,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:19:25,612 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:19:25,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-27 23:19:25,612 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:19:25,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:19:25,614 INFO L85 PathProgramCache]: Analyzing trace with hash -482064168, now seen corresponding path program 12 times [2024-06-27 23:19:25,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:19:25,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142021216] [2024-06-27 23:19:25,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:19:25,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:19:25,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:19:27,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:19:27,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:19:27,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142021216] [2024-06-27 23:19:27,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142021216] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:19:27,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:19:27,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:19:27,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883901533] [2024-06-27 23:19:27,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:19:27,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:19:27,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:19:27,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:19:27,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:19:27,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:19:27,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 732 transitions, 15126 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:19:27,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:19:27,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:19:27,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:19:30,625 INFO L124 PetriNetUnfolderBase]: 6109/9400 cut-off events. [2024-06-27 23:19:30,625 INFO L125 PetriNetUnfolderBase]: For 1276995/1277006 co-relation queries the response was YES. [2024-06-27 23:19:30,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96266 conditions, 9400 events. 6109/9400 cut-off events. For 1276995/1277006 co-relation queries the response was YES. Maximal size of possible extension queue 500. Compared 57326 event pairs, 2197 based on Foata normal form. 6/9369 useless extension candidates. Maximal degree in co-relation 96108. Up to 8959 conditions per place. [2024-06-27 23:19:30,784 INFO L140 encePairwiseOnDemand]: 28/42 looper letters, 697 selfloop transitions, 51 changer transitions 0/773 dead transitions. [2024-06-27 23:19:30,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 773 transitions, 17026 flow [2024-06-27 23:19:30,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:19:30,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:19:30,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 177 transitions. [2024-06-27 23:19:30,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42142857142857143 [2024-06-27 23:19:30,786 INFO L175 Difference]: Start difference. First operand has 334 places, 732 transitions, 15126 flow. Second operand 10 states and 177 transitions. [2024-06-27 23:19:30,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 773 transitions, 17026 flow [2024-06-27 23:19:34,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 773 transitions, 16805 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-27 23:19:34,086 INFO L231 Difference]: Finished difference. Result has 339 places, 740 transitions, 15225 flow [2024-06-27 23:19:34,087 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=14906, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=732, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=682, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=15225, PETRI_PLACES=339, PETRI_TRANSITIONS=740} [2024-06-27 23:19:34,087 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 296 predicate places. [2024-06-27 23:19:34,087 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 740 transitions, 15225 flow [2024-06-27 23:19:34,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:19:34,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:19:34,088 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:19:34,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-27 23:19:34,088 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:19:34,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:19:34,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1798611066, now seen corresponding path program 8 times [2024-06-27 23:19:34,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:19:34,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60698104] [2024-06-27 23:19:34,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:19:34,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:19:34,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:19:35,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:19:35,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:19:35,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60698104] [2024-06-27 23:19:35,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60698104] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:19:35,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:19:35,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:19:35,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211544706] [2024-06-27 23:19:35,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:19:35,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:19:35,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:19:35,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:19:35,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:19:35,720 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:19:35,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 740 transitions, 15225 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:19:35,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:19:35,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:19:35,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:19:38,466 INFO L124 PetriNetUnfolderBase]: 6128/9421 cut-off events. [2024-06-27 23:19:38,466 INFO L125 PetriNetUnfolderBase]: For 1294396/1294407 co-relation queries the response was YES. [2024-06-27 23:19:38,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97286 conditions, 9421 events. 6128/9421 cut-off events. For 1294396/1294407 co-relation queries the response was YES. Maximal size of possible extension queue 499. Compared 57353 event pairs, 2203 based on Foata normal form. 4/9388 useless extension candidates. Maximal degree in co-relation 97126. Up to 8948 conditions per place. [2024-06-27 23:19:38,612 INFO L140 encePairwiseOnDemand]: 27/42 looper letters, 691 selfloop transitions, 76 changer transitions 0/792 dead transitions. [2024-06-27 23:19:38,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 792 transitions, 17419 flow [2024-06-27 23:19:38,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:19:38,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:19:38,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 178 transitions. [2024-06-27 23:19:38,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4238095238095238 [2024-06-27 23:19:38,613 INFO L175 Difference]: Start difference. First operand has 339 places, 740 transitions, 15225 flow. Second operand 10 states and 178 transitions. [2024-06-27 23:19:38,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 792 transitions, 17419 flow [2024-06-27 23:19:41,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 792 transitions, 17212 flow, removed 58 selfloop flow, removed 7 redundant places. [2024-06-27 23:19:41,703 INFO L231 Difference]: Finished difference. Result has 342 places, 753 transitions, 15621 flow [2024-06-27 23:19:41,703 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=15020, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=740, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=664, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=15621, PETRI_PLACES=342, PETRI_TRANSITIONS=753} [2024-06-27 23:19:41,704 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 299 predicate places. [2024-06-27 23:19:41,704 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 753 transitions, 15621 flow [2024-06-27 23:19:41,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:19:41,704 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:19:41,704 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:19:41,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-27 23:19:41,704 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:19:41,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:19:41,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1611824055, now seen corresponding path program 3 times [2024-06-27 23:19:41,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:19:41,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213159723] [2024-06-27 23:19:41,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:19:41,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:19:41,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:19:43,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:19:43,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:19:43,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213159723] [2024-06-27 23:19:43,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213159723] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:19:43,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:19:43,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:19:43,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188669797] [2024-06-27 23:19:43,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:19:43,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:19:43,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:19:43,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:19:43,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:19:43,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:19:43,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 753 transitions, 15621 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:19:43,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:19:43,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:19:43,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:19:46,431 INFO L124 PetriNetUnfolderBase]: 6156/9467 cut-off events. [2024-06-27 23:19:46,431 INFO L125 PetriNetUnfolderBase]: For 1330783/1330794 co-relation queries the response was YES. [2024-06-27 23:19:46,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98080 conditions, 9467 events. 6156/9467 cut-off events. For 1330783/1330794 co-relation queries the response was YES. Maximal size of possible extension queue 505. Compared 57728 event pairs, 2217 based on Foata normal form. 6/9436 useless extension candidates. Maximal degree in co-relation 97919. Up to 9068 conditions per place. [2024-06-27 23:19:46,582 INFO L140 encePairwiseOnDemand]: 28/42 looper letters, 724 selfloop transitions, 37 changer transitions 0/786 dead transitions. [2024-06-27 23:19:46,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 786 transitions, 17436 flow [2024-06-27 23:19:46,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:19:46,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:19:46,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-06-27 23:19:46,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42328042328042326 [2024-06-27 23:19:46,584 INFO L175 Difference]: Start difference. First operand has 342 places, 753 transitions, 15621 flow. Second operand 9 states and 160 transitions. [2024-06-27 23:19:46,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 786 transitions, 17436 flow [2024-06-27 23:19:50,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 786 transitions, 16803 flow, removed 45 selfloop flow, removed 10 redundant places. [2024-06-27 23:19:50,066 INFO L231 Difference]: Finished difference. Result has 341 places, 756 transitions, 15201 flow [2024-06-27 23:19:50,067 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=14988, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=753, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=716, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15201, PETRI_PLACES=341, PETRI_TRANSITIONS=756} [2024-06-27 23:19:50,067 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 298 predicate places. [2024-06-27 23:19:50,067 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 756 transitions, 15201 flow [2024-06-27 23:19:50,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:19:50,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:19:50,067 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:19:50,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-27 23:19:50,067 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:19:50,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:19:50,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1798611345, now seen corresponding path program 4 times [2024-06-27 23:19:50,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:19:50,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550358460] [2024-06-27 23:19:50,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:19:50,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:19:50,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:19:51,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:19:51,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:19:51,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550358460] [2024-06-27 23:19:51,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550358460] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:19:51,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:19:51,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:19:51,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836495075] [2024-06-27 23:19:51,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:19:51,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:19:51,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:19:51,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:19:51,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:19:51,922 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:19:51,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 756 transitions, 15201 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:19:51,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:19:51,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:19:51,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:19:54,625 INFO L124 PetriNetUnfolderBase]: 6184/9513 cut-off events. [2024-06-27 23:19:54,626 INFO L125 PetriNetUnfolderBase]: For 1359776/1359787 co-relation queries the response was YES. [2024-06-27 23:19:54,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98791 conditions, 9513 events. 6184/9513 cut-off events. For 1359776/1359787 co-relation queries the response was YES. Maximal size of possible extension queue 509. Compared 58111 event pairs, 2219 based on Foata normal form. 6/9482 useless extension candidates. Maximal degree in co-relation 98629. Up to 9064 conditions per place. [2024-06-27 23:19:54,771 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 718 selfloop transitions, 47 changer transitions 0/790 dead transitions. [2024-06-27 23:19:54,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 790 transitions, 17046 flow [2024-06-27 23:19:54,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:19:54,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:19:54,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 161 transitions. [2024-06-27 23:19:54,772 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42592592592592593 [2024-06-27 23:19:54,773 INFO L175 Difference]: Start difference. First operand has 341 places, 756 transitions, 15201 flow. Second operand 9 states and 161 transitions. [2024-06-27 23:19:54,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 790 transitions, 17046 flow [2024-06-27 23:19:58,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 790 transitions, 16885 flow, removed 56 selfloop flow, removed 6 redundant places. [2024-06-27 23:19:58,030 INFO L231 Difference]: Finished difference. Result has 344 places, 759 transitions, 15284 flow [2024-06-27 23:19:58,031 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=15040, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=756, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=709, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15284, PETRI_PLACES=344, PETRI_TRANSITIONS=759} [2024-06-27 23:19:58,031 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 301 predicate places. [2024-06-27 23:19:58,031 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 759 transitions, 15284 flow [2024-06-27 23:19:58,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:19:58,031 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:19:58,031 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:19:58,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-27 23:19:58,031 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:19:58,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:19:58,031 INFO L85 PathProgramCache]: Analyzing trace with hash 1540332675, now seen corresponding path program 5 times [2024-06-27 23:19:58,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:19:58,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31223890] [2024-06-27 23:19:58,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:19:58,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:19:58,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:19:59,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:19:59,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:19:59,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31223890] [2024-06-27 23:19:59,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31223890] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:19:59,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:19:59,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:19:59,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974831739] [2024-06-27 23:19:59,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:19:59,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:19:59,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:19:59,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:19:59,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:19:59,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:19:59,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 759 transitions, 15284 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:19:59,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:19:59,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:19:59,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:20:02,658 INFO L124 PetriNetUnfolderBase]: 6212/9556 cut-off events. [2024-06-27 23:20:02,658 INFO L125 PetriNetUnfolderBase]: For 1390075/1390086 co-relation queries the response was YES. [2024-06-27 23:20:02,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99618 conditions, 9556 events. 6212/9556 cut-off events. For 1390075/1390086 co-relation queries the response was YES. Maximal size of possible extension queue 511. Compared 58369 event pairs, 2220 based on Foata normal form. 6/9525 useless extension candidates. Maximal degree in co-relation 99455. Up to 9175 conditions per place. [2024-06-27 23:20:02,811 INFO L140 encePairwiseOnDemand]: 28/42 looper letters, 744 selfloop transitions, 25 changer transitions 0/794 dead transitions. [2024-06-27 23:20:02,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 794 transitions, 17090 flow [2024-06-27 23:20:02,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:20:02,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:20:02,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 183 transitions. [2024-06-27 23:20:02,812 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3961038961038961 [2024-06-27 23:20:02,812 INFO L175 Difference]: Start difference. First operand has 344 places, 759 transitions, 15284 flow. Second operand 11 states and 183 transitions. [2024-06-27 23:20:02,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 794 transitions, 17090 flow [2024-06-27 23:20:06,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 794 transitions, 16880 flow, removed 64 selfloop flow, removed 7 redundant places. [2024-06-27 23:20:06,397 INFO L231 Difference]: Finished difference. Result has 348 places, 762 transitions, 15272 flow [2024-06-27 23:20:06,397 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=15080, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=759, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=734, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=15272, PETRI_PLACES=348, PETRI_TRANSITIONS=762} [2024-06-27 23:20:06,397 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 305 predicate places. [2024-06-27 23:20:06,397 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 762 transitions, 15272 flow [2024-06-27 23:20:06,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:20:06,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:20:06,398 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:20:06,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-27 23:20:06,398 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:20:06,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:20:06,399 INFO L85 PathProgramCache]: Analyzing trace with hash -6476272, now seen corresponding path program 9 times [2024-06-27 23:20:06,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:20:06,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910358535] [2024-06-27 23:20:06,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:20:06,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:20:06,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:20:08,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:20:08,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:20:08,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910358535] [2024-06-27 23:20:08,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910358535] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:20:08,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:20:08,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:20:08,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562168169] [2024-06-27 23:20:08,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:20:08,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:20:08,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:20:08,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:20:08,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:20:08,254 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:20:08,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 762 transitions, 15272 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:20:08,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:20:08,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:20:08,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:20:11,409 INFO L124 PetriNetUnfolderBase]: 6307/9691 cut-off events. [2024-06-27 23:20:11,410 INFO L125 PetriNetUnfolderBase]: For 1407424/1407435 co-relation queries the response was YES. [2024-06-27 23:20:11,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101352 conditions, 9691 events. 6307/9691 cut-off events. For 1407424/1407435 co-relation queries the response was YES. Maximal size of possible extension queue 521. Compared 59158 event pairs, 2211 based on Foata normal form. 5/9659 useless extension candidates. Maximal degree in co-relation 101188. Up to 9094 conditions per place. [2024-06-27 23:20:11,560 INFO L140 encePairwiseOnDemand]: 28/42 looper letters, 674 selfloop transitions, 125 changer transitions 0/824 dead transitions. [2024-06-27 23:20:11,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 824 transitions, 18235 flow [2024-06-27 23:20:11,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:20:11,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:20:11,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 174 transitions. [2024-06-27 23:20:11,562 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4142857142857143 [2024-06-27 23:20:11,562 INFO L175 Difference]: Start difference. First operand has 348 places, 762 transitions, 15272 flow. Second operand 10 states and 174 transitions. [2024-06-27 23:20:11,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 824 transitions, 18235 flow [2024-06-27 23:20:14,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 824 transitions, 18071 flow, removed 59 selfloop flow, removed 9 redundant places. [2024-06-27 23:20:14,893 INFO L231 Difference]: Finished difference. Result has 350 places, 792 transitions, 16320 flow [2024-06-27 23:20:14,893 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=15108, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=762, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=652, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=16320, PETRI_PLACES=350, PETRI_TRANSITIONS=792} [2024-06-27 23:20:14,893 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 307 predicate places. [2024-06-27 23:20:14,894 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 792 transitions, 16320 flow [2024-06-27 23:20:14,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:20:14,894 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:20:14,894 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:20:14,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-27 23:20:14,894 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:20:14,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:20:14,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1410734526, now seen corresponding path program 10 times [2024-06-27 23:20:14,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:20:14,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355928771] [2024-06-27 23:20:14,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:20:14,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:20:14,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:20:16,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:20:16,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:20:16,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355928771] [2024-06-27 23:20:16,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355928771] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:20:16,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:20:16,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:20:16,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363782783] [2024-06-27 23:20:16,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:20:16,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:20:16,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:20:16,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:20:16,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:20:16,816 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:20:16,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 792 transitions, 16320 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 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) [2024-06-27 23:20:16,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:20:16,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:20:16,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:20:20,210 INFO L124 PetriNetUnfolderBase]: 6290/9676 cut-off events. [2024-06-27 23:20:20,211 INFO L125 PetriNetUnfolderBase]: For 1421392/1421403 co-relation queries the response was YES. [2024-06-27 23:20:20,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101121 conditions, 9676 events. 6290/9676 cut-off events. For 1421392/1421403 co-relation queries the response was YES. Maximal size of possible extension queue 524. Compared 59242 event pairs, 2204 based on Foata normal form. 6/9645 useless extension candidates. Maximal degree in co-relation 100955. Up to 9100 conditions per place. [2024-06-27 23:20:20,363 INFO L140 encePairwiseOnDemand]: 28/42 looper letters, 695 selfloop transitions, 116 changer transitions 0/836 dead transitions. [2024-06-27 23:20:20,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 836 transitions, 18379 flow [2024-06-27 23:20:20,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:20:20,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:20:20,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 206 transitions. [2024-06-27 23:20:20,365 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4087301587301587 [2024-06-27 23:20:20,365 INFO L175 Difference]: Start difference. First operand has 350 places, 792 transitions, 16320 flow. Second operand 12 states and 206 transitions. [2024-06-27 23:20:20,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 836 transitions, 18379 flow [2024-06-27 23:20:24,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 836 transitions, 18119 flow, removed 97 selfloop flow, removed 7 redundant places. [2024-06-27 23:20:24,235 INFO L231 Difference]: Finished difference. Result has 355 places, 796 transitions, 16413 flow [2024-06-27 23:20:24,236 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=16060, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=792, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=680, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=16413, PETRI_PLACES=355, PETRI_TRANSITIONS=796} [2024-06-27 23:20:24,236 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 312 predicate places. [2024-06-27 23:20:24,236 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 796 transitions, 16413 flow [2024-06-27 23:20:24,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 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) [2024-06-27 23:20:24,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:20:24,236 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:20:24,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-27 23:20:24,236 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:20:24,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:20:24,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1410734805, now seen corresponding path program 6 times [2024-06-27 23:20:24,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:20:24,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139868229] [2024-06-27 23:20:24,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:20:24,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:20:24,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:20:26,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:20:26,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:20:26,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139868229] [2024-06-27 23:20:26,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139868229] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:20:26,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:20:26,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:20:26,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943051589] [2024-06-27 23:20:26,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:20:26,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:20:26,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:20:26,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:20:26,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:20:26,326 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:20:26,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 796 transitions, 16413 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:20:26,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:20:26,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:20:26,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:20:29,501 INFO L124 PetriNetUnfolderBase]: 6318/9726 cut-off events. [2024-06-27 23:20:29,501 INFO L125 PetriNetUnfolderBase]: For 1424169/1424180 co-relation queries the response was YES. [2024-06-27 23:20:29,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101828 conditions, 9726 events. 6318/9726 cut-off events. For 1424169/1424180 co-relation queries the response was YES. Maximal size of possible extension queue 529. Compared 59720 event pairs, 2222 based on Foata normal form. 6/9695 useless extension candidates. Maximal degree in co-relation 101661. Up to 9219 conditions per place. [2024-06-27 23:20:29,648 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 732 selfloop transitions, 73 changer transitions 0/830 dead transitions. [2024-06-27 23:20:29,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 830 transitions, 18394 flow [2024-06-27 23:20:29,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:20:29,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:20:29,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 172 transitions. [2024-06-27 23:20:29,650 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4095238095238095 [2024-06-27 23:20:29,650 INFO L175 Difference]: Start difference. First operand has 355 places, 796 transitions, 16413 flow. Second operand 10 states and 172 transitions. [2024-06-27 23:20:29,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 830 transitions, 18394 flow [2024-06-27 23:20:32,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 830 transitions, 17335 flow, removed 133 selfloop flow, removed 14 redundant places. [2024-06-27 23:20:32,955 INFO L231 Difference]: Finished difference. Result has 351 places, 799 transitions, 15650 flow [2024-06-27 23:20:32,955 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=15354, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=796, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=723, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=15650, PETRI_PLACES=351, PETRI_TRANSITIONS=799} [2024-06-27 23:20:32,955 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 308 predicate places. [2024-06-27 23:20:32,955 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 799 transitions, 15650 flow [2024-06-27 23:20:32,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:20:32,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:20:32,955 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:20:32,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-27 23:20:32,956 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:20:32,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:20:32,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1532913786, now seen corresponding path program 11 times [2024-06-27 23:20:32,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:20:32,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779250980] [2024-06-27 23:20:32,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:20:32,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:20:32,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:20:34,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:20:34,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:20:34,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779250980] [2024-06-27 23:20:34,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779250980] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:20:34,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:20:34,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:20:34,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307582801] [2024-06-27 23:20:34,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:20:34,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:20:34,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:20:34,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:20:34,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:20:34,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:20:34,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 799 transitions, 15650 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:20:34,933 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:20:34,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:20:34,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:20:38,310 INFO L124 PetriNetUnfolderBase]: 6417/9863 cut-off events. [2024-06-27 23:20:38,310 INFO L125 PetriNetUnfolderBase]: For 1417958/1417969 co-relation queries the response was YES. [2024-06-27 23:20:38,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101936 conditions, 9863 events. 6417/9863 cut-off events. For 1417958/1417969 co-relation queries the response was YES. Maximal size of possible extension queue 538. Compared 60591 event pairs, 2220 based on Foata normal form. 9/9835 useless extension candidates. Maximal degree in co-relation 101771. Up to 9145 conditions per place. [2024-06-27 23:20:38,446 INFO L140 encePairwiseOnDemand]: 27/42 looper letters, 698 selfloop transitions, 144 changer transitions 0/867 dead transitions. [2024-06-27 23:20:38,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 867 transitions, 18525 flow [2024-06-27 23:20:38,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:20:38,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:20:38,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 202 transitions. [2024-06-27 23:20:38,448 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43722943722943725 [2024-06-27 23:20:38,448 INFO L175 Difference]: Start difference. First operand has 351 places, 799 transitions, 15650 flow. Second operand 11 states and 202 transitions. [2024-06-27 23:20:38,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 867 transitions, 18525 flow [2024-06-27 23:20:41,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 867 transitions, 18147 flow, removed 119 selfloop flow, removed 8 redundant places. [2024-06-27 23:20:41,851 INFO L231 Difference]: Finished difference. Result has 355 places, 823 transitions, 16214 flow [2024-06-27 23:20:41,852 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=15272, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=799, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=667, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=16214, PETRI_PLACES=355, PETRI_TRANSITIONS=823} [2024-06-27 23:20:41,852 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 312 predicate places. [2024-06-27 23:20:41,852 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 823 transitions, 16214 flow [2024-06-27 23:20:41,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:20:41,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:20:41,853 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:20:41,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-27 23:20:41,853 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:20:41,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:20:41,853 INFO L85 PathProgramCache]: Analyzing trace with hash -67523789, now seen corresponding path program 7 times [2024-06-27 23:20:41,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:20:41,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036000250] [2024-06-27 23:20:41,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:20:41,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:20:41,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:20:43,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:20:43,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:20:43,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036000250] [2024-06-27 23:20:43,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036000250] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:20:43,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:20:43,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:20:43,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800486207] [2024-06-27 23:20:43,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:20:43,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:20:43,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:20:43,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:20:43,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:20:43,973 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:20:43,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 823 transitions, 16214 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:20:43,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:20:43,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:20:43,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:20:47,128 INFO L124 PetriNetUnfolderBase]: 6415/9870 cut-off events. [2024-06-27 23:20:47,128 INFO L125 PetriNetUnfolderBase]: For 1443560/1443571 co-relation queries the response was YES. [2024-06-27 23:20:47,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101795 conditions, 9870 events. 6415/9870 cut-off events. For 1443560/1443571 co-relation queries the response was YES. Maximal size of possible extension queue 542. Compared 60694 event pairs, 2221 based on Foata normal form. 6/9839 useless extension candidates. Maximal degree in co-relation 101628. Up to 9406 conditions per place. [2024-06-27 23:20:47,265 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 779 selfloop transitions, 54 changer transitions 0/858 dead transitions. [2024-06-27 23:20:47,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 858 transitions, 18224 flow [2024-06-27 23:20:47,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:20:47,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:20:47,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 161 transitions. [2024-06-27 23:20:47,267 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42592592592592593 [2024-06-27 23:20:47,267 INFO L175 Difference]: Start difference. First operand has 355 places, 823 transitions, 16214 flow. Second operand 9 states and 161 transitions. [2024-06-27 23:20:47,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 858 transitions, 18224 flow [2024-06-27 23:20:50,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 858 transitions, 17866 flow, removed 109 selfloop flow, removed 7 redundant places. [2024-06-27 23:20:50,803 INFO L231 Difference]: Finished difference. Result has 357 places, 828 transitions, 16141 flow [2024-06-27 23:20:50,803 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=15856, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=823, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=769, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=16141, PETRI_PLACES=357, PETRI_TRANSITIONS=828} [2024-06-27 23:20:50,803 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 314 predicate places. [2024-06-27 23:20:50,804 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 828 transitions, 16141 flow [2024-06-27 23:20:50,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:20:50,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:20:50,804 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:20:50,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-27 23:20:50,804 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:20:50,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:20:50,804 INFO L85 PathProgramCache]: Analyzing trace with hash -67739270, now seen corresponding path program 13 times [2024-06-27 23:20:50,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:20:50,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106187088] [2024-06-27 23:20:50,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:20:50,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:20:50,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:20:52,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:20:52,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:20:52,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106187088] [2024-06-27 23:20:52,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106187088] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:20:52,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:20:52,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:20:52,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485166426] [2024-06-27 23:20:52,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:20:52,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:20:52,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:20:52,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:20:52,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:20:53,004 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 23:20:53,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 828 transitions, 16141 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:20:53,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:20:53,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 23:20:53,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand