./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi004.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/rfi004.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/rfi004.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/rfi004.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 00:01:31,516 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 00:01:31,579 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 00:01:31,583 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 00:01:31,584 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 00:01:31,603 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 00:01:31,604 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 00:01:31,604 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 00:01:31,605 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 00:01:31,605 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 00:01:31,605 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 00:01:31,606 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 00:01:31,606 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 00:01:31,607 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 00:01:31,607 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 00:01:31,608 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 00:01:31,608 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 00:01:31,608 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 00:01:31,609 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 00:01:31,609 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 00:01:31,610 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 00:01:31,610 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 00:01:31,610 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 00:01:31,611 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 00:01:31,611 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 00:01:31,612 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 00:01:31,612 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 00:01:31,612 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 00:01:31,613 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 00:01:31,613 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 00:01:31,613 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 00:01:31,614 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 00:01:31,614 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 00:01:31,614 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 00:01:31,615 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 00:01:31,615 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 00:01:31,615 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 00:01:31,616 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 00:01:31,616 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 00:01:31,616 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 00:01:31,617 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 00:01:31,622 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 00:01:31,622 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 00:01:31,623 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 00:01:31,879 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 00:01:31,910 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 00:01:31,912 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 00:01:31,914 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 00:01:31,916 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 00:01:31,917 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/rfi004.yml/witness.yml [2024-06-28 00:01:32,019 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 00:01:32,019 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 00:01:32,021 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi004.i [2024-06-28 00:01:33,282 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 00:01:33,587 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 00:01:33,587 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi004.i [2024-06-28 00:01:33,608 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e600c492a/deac3d0d65e14105bf8a84244c01d7b4/FLAG14d1d53d5 [2024-06-28 00:01:33,625 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e600c492a/deac3d0d65e14105bf8a84244c01d7b4 [2024-06-28 00:01:33,627 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 00:01:33,628 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 00:01:33,630 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 00:01:33,630 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 00:01:33,635 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 00:01:33,636 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 12:01:32" (1/2) ... [2024-06-28 00:01:33,637 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a696aff and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:01:33, skipping insertion in model container [2024-06-28 00:01:33,637 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 12:01:32" (1/2) ... [2024-06-28 00:01:33,639 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3510a255 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:01:33, skipping insertion in model container [2024-06-28 00:01:33,639 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 12:01:33" (2/2) ... [2024-06-28 00:01:33,640 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a696aff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:01:33, skipping insertion in model container [2024-06-28 00:01:33,641 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 12:01:33" (2/2) ... [2024-06-28 00:01:33,641 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 00:01:33,673 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 00:01:33,675 INFO L97 edCorrectnessWitness]: Location invariant before [L818-L818] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )y >= 0LL && (0LL - (long long )__unbuffered_p0_EAX) + (long long )y$mem_tmp >= 0LL) && (0LL - (long long )__unbuffered_p0_EAX) + (long long )y$r_buff0_thd2 >= 0LL) && (0LL - (long long )__unbuffered_p0_EAX) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p1_EAX) + (long long )z >= 0LL) && (0LL - (long long )__unbuffered_p1_EBX) + (long long )x >= 0LL) && (0LL - (long long )y) + (long long )y$r_buff0_thd2 >= 0LL) && (0LL - (long long )y) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$mem_tmp) + (long long )y$r_buff0_thd2 >= 0LL) && (0LL - (long long )y$mem_tmp) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )z >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )weak$$choice2 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p1_EBX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX) - (long long )__unbuffered_p1_EBX >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p1_EBX >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p1_EBX) - (long long )x >= 0LL) && (2LL - (long long )__unbuffered_p1_EBX) - (long long )weak$$choice0 >= 0LL) && (2LL - (long long )__unbuffered_p1_EBX) - (long long )weak$$choice2 >= 0LL) && (long long )__unbuffered_p0_EAX - (long long )y$mem_tmp >= 0LL) && (long long )y - (long long )y$mem_tmp >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$w_buff1_used >= 0LL) && (long long )y$r_buff1_thd2 - (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff1_thd2 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff0_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0_used - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff1 - (long long )y$w_buff1_used >= 0LL) [2024-06-28 00:01:33,675 INFO L97 edCorrectnessWitness]: Location invariant before [L819-L819] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )y >= 0LL && (0LL - (long long )__unbuffered_p0_EAX) + (long long )y$mem_tmp >= 0LL) && (0LL - (long long )__unbuffered_p0_EAX) + (long long )y$r_buff0_thd2 >= 0LL) && (0LL - (long long )__unbuffered_p0_EAX) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p1_EAX) + (long long )z >= 0LL) && (0LL - (long long )__unbuffered_p1_EBX) + (long long )x >= 0LL) && (0LL - (long long )y) + (long long )y$r_buff0_thd2 >= 0LL) && (0LL - (long long )y) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$mem_tmp) + (long long )y$r_buff0_thd2 >= 0LL) && (0LL - (long long )y$mem_tmp) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )z >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )weak$$choice2 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p1_EBX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX) - (long long )__unbuffered_p1_EBX >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p1_EBX >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p1_EBX) - (long long )x >= 0LL) && (2LL - (long long )__unbuffered_p1_EBX) - (long long )weak$$choice0 >= 0LL) && (2LL - (long long )__unbuffered_p1_EBX) - (long long )weak$$choice2 >= 0LL) && (long long )__unbuffered_p0_EAX - (long long )y$mem_tmp >= 0LL) && (long long )y - (long long )y$mem_tmp >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$w_buff1_used >= 0LL) && (long long )y$r_buff1_thd2 - (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff1_thd2 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff0_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0_used - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff1 - (long long )y$w_buff1_used >= 0LL) [2024-06-28 00:01:33,675 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 00:01:33,675 INFO L106 edCorrectnessWitness]: ghost_update [L816-L816] multithreaded = 1; [2024-06-28 00:01:33,728 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 00:01:34,148 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 00:01:34,159 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 00:01:34,308 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 00:01:34,415 INFO L206 MainTranslator]: Completed translation [2024-06-28 00:01:34,415 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:01:34 WrapperNode [2024-06-28 00:01:34,415 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 00:01:34,417 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 00:01:34,417 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 00:01:34,417 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 00:01:34,424 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:01:34" (1/1) ... [2024-06-28 00:01:34,447 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:01:34" (1/1) ... [2024-06-28 00:01:34,489 INFO L138 Inliner]: procedures = 174, calls = 40, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 121 [2024-06-28 00:01:34,489 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 00:01:34,490 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 00:01:34,490 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 00:01:34,491 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 00:01:34,502 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:01:34" (1/1) ... [2024-06-28 00:01:34,502 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:01:34" (1/1) ... [2024-06-28 00:01:34,509 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:01:34" (1/1) ... [2024-06-28 00:01:34,530 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-28 00:01:34,530 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:01:34" (1/1) ... [2024-06-28 00:01:34,531 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:01:34" (1/1) ... [2024-06-28 00:01:34,540 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:01:34" (1/1) ... [2024-06-28 00:01:34,542 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:01:34" (1/1) ... [2024-06-28 00:01:34,553 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:01:34" (1/1) ... [2024-06-28 00:01:34,555 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:01:34" (1/1) ... [2024-06-28 00:01:34,559 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 00:01:34,560 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 00:01:34,560 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 00:01:34,560 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 00:01:34,561 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:01:34" (1/1) ... [2024-06-28 00:01:34,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 00:01:34,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 00:01:34,606 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-28 00:01:34,633 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-28 00:01:34,656 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 00:01:34,657 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 00:01:34,658 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 00:01:34,658 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 00:01:34,658 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 00:01:34,658 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 00:01:34,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 00:01:34,659 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 00:01:34,659 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 00:01:34,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 00:01:34,662 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 00:01:34,882 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 00:01:34,885 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 00:01:35,269 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 00:01:35,269 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 00:01:35,402 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 00:01:35,402 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 00:01:35,403 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 12:01:35 BoogieIcfgContainer [2024-06-28 00:01:35,403 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 00:01:35,405 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 00:01:35,405 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 00:01:35,409 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 00:01:35,410 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 12:01:32" (1/4) ... [2024-06-28 00:01:35,410 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@aada353 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 12:01:35, skipping insertion in model container [2024-06-28 00:01:35,411 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 12:01:33" (2/4) ... [2024-06-28 00:01:35,411 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@aada353 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 12:01:35, skipping insertion in model container [2024-06-28 00:01:35,411 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:01:34" (3/4) ... [2024-06-28 00:01:35,411 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@aada353 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 12:01:35, skipping insertion in model container [2024-06-28 00:01:35,412 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 12:01:35" (4/4) ... [2024-06-28 00:01:35,413 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi004.i [2024-06-28 00:01:35,431 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 00:01:35,431 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-28 00:01:35,431 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 00:01:35,474 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 00:01:35,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 32 transitions, 72 flow [2024-06-28 00:01:35,532 INFO L124 PetriNetUnfolderBase]: 0/30 cut-off events. [2024-06-28 00:01:35,533 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 00:01:35,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 30 events. 0/30 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 44 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-28 00:01:35,535 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 32 transitions, 72 flow [2024-06-28 00:01:35,538 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 24 transitions, 54 flow [2024-06-28 00:01:35,547 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 00:01:35,554 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;@4d44c31c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 00:01:35,554 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-28 00:01:35,558 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 00:01:35,559 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 00:01:35,559 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 00:01:35,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:35,560 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 00:01:35,560 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:01:35,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:35,566 INFO L85 PathProgramCache]: Analyzing trace with hash 329103778, now seen corresponding path program 1 times [2024-06-28 00:01:35,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:35,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380927274] [2024-06-28 00:01:35,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:35,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:35,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:37,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:37,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:37,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380927274] [2024-06-28 00:01:37,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380927274] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:37,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:37,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 00:01:37,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36576289] [2024-06-28 00:01:37,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:37,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 00:01:37,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:37,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 00:01:37,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 00:01:37,403 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 32 [2024-06-28 00:01:37,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 24 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:37,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:37,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 32 [2024-06-28 00:01:37,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:37,576 INFO L124 PetriNetUnfolderBase]: 131/269 cut-off events. [2024-06-28 00:01:37,576 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-06-28 00:01:37,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 525 conditions, 269 events. 131/269 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1082 event pairs, 75 based on Foata normal form. 1/258 useless extension candidates. Maximal degree in co-relation 514. Up to 235 conditions per place. [2024-06-28 00:01:37,584 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 20 selfloop transitions, 3 changer transitions 0/30 dead transitions. [2024-06-28 00:01:37,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 30 transitions, 115 flow [2024-06-28 00:01:37,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 00:01:37,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 00:01:37,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 61 transitions. [2024-06-28 00:01:37,598 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6354166666666666 [2024-06-28 00:01:37,600 INFO L175 Difference]: Start difference. First operand has 31 places, 24 transitions, 54 flow. Second operand 3 states and 61 transitions. [2024-06-28 00:01:37,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 30 transitions, 115 flow [2024-06-28 00:01:37,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 30 transitions, 112 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 00:01:37,606 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 73 flow [2024-06-28 00:01:37,609 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=73, PETRI_PLACES=32, PETRI_TRANSITIONS=26} [2024-06-28 00:01:37,613 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 1 predicate places. [2024-06-28 00:01:37,613 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 73 flow [2024-06-28 00:01:37,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:37,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:37,614 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:37,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 00:01:37,615 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:01:37,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:37,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1558109713, now seen corresponding path program 1 times [2024-06-28 00:01:37,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:37,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876966222] [2024-06-28 00:01:37,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:37,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:37,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:38,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:38,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:38,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876966222] [2024-06-28 00:01:38,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876966222] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:38,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:38,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 00:01:38,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626386532] [2024-06-28 00:01:38,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:38,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 00:01:38,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:38,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 00:01:38,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 00:01:38,859 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-06-28 00:01:38,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 73 flow. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:38,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:38,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-06-28 00:01:38,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:39,021 INFO L124 PetriNetUnfolderBase]: 150/298 cut-off events. [2024-06-28 00:01:39,022 INFO L125 PetriNetUnfolderBase]: For 58/58 co-relation queries the response was YES. [2024-06-28 00:01:39,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 666 conditions, 298 events. 150/298 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1171 event pairs, 68 based on Foata normal form. 2/299 useless extension candidates. Maximal degree in co-relation 654. Up to 258 conditions per place. [2024-06-28 00:01:39,029 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 25 selfloop transitions, 5 changer transitions 0/36 dead transitions. [2024-06-28 00:01:39,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 36 transitions, 159 flow [2024-06-28 00:01:39,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 00:01:39,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 00:01:39,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 76 transitions. [2024-06-28 00:01:39,031 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.59375 [2024-06-28 00:01:39,031 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 73 flow. Second operand 4 states and 76 transitions. [2024-06-28 00:01:39,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 36 transitions, 159 flow [2024-06-28 00:01:39,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 36 transitions, 156 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 00:01:39,034 INFO L231 Difference]: Finished difference. Result has 35 places, 28 transitions, 97 flow [2024-06-28 00:01:39,034 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=97, PETRI_PLACES=35, PETRI_TRANSITIONS=28} [2024-06-28 00:01:39,035 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 4 predicate places. [2024-06-28 00:01:39,035 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 28 transitions, 97 flow [2024-06-28 00:01:39,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:39,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:39,036 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:39,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 00:01:39,036 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:01:39,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:39,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1600172878, now seen corresponding path program 1 times [2024-06-28 00:01:39,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:39,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736378381] [2024-06-28 00:01:39,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:39,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:39,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:40,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:40,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:40,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736378381] [2024-06-28 00:01:40,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736378381] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:40,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:40,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 00:01:40,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034408181] [2024-06-28 00:01:40,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:40,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 00:01:40,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:40,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 00:01:40,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 00:01:40,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-06-28 00:01:40,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 28 transitions, 97 flow. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:40,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:40,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-06-28 00:01:40,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:41,122 INFO L124 PetriNetUnfolderBase]: 147/292 cut-off events. [2024-06-28 00:01:41,122 INFO L125 PetriNetUnfolderBase]: For 173/173 co-relation queries the response was YES. [2024-06-28 00:01:41,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 728 conditions, 292 events. 147/292 cut-off events. For 173/173 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1123 event pairs, 47 based on Foata normal form. 2/293 useless extension candidates. Maximal degree in co-relation 714. Up to 244 conditions per place. [2024-06-28 00:01:41,125 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 29 selfloop transitions, 7 changer transitions 0/42 dead transitions. [2024-06-28 00:01:41,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 42 transitions, 207 flow [2024-06-28 00:01:41,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 00:01:41,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 00:01:41,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 93 transitions. [2024-06-28 00:01:41,127 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.58125 [2024-06-28 00:01:41,127 INFO L175 Difference]: Start difference. First operand has 35 places, 28 transitions, 97 flow. Second operand 5 states and 93 transitions. [2024-06-28 00:01:41,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 42 transitions, 207 flow [2024-06-28 00:01:41,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 42 transitions, 198 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-28 00:01:41,130 INFO L231 Difference]: Finished difference. Result has 38 places, 30 transitions, 121 flow [2024-06-28 00:01:41,130 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=121, PETRI_PLACES=38, PETRI_TRANSITIONS=30} [2024-06-28 00:01:41,131 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 7 predicate places. [2024-06-28 00:01:41,131 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 30 transitions, 121 flow [2024-06-28 00:01:41,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:41,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:41,131 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:41,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 00:01:41,132 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:01:41,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:41,133 INFO L85 PathProgramCache]: Analyzing trace with hash -2147284969, now seen corresponding path program 1 times [2024-06-28 00:01:41,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:41,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633984633] [2024-06-28 00:01:41,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:41,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:41,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:42,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:42,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:42,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633984633] [2024-06-28 00:01:42,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633984633] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:42,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:42,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 00:01:42,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622667999] [2024-06-28 00:01:42,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:42,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 00:01:42,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:42,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 00:01:42,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-28 00:01:42,448 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:01:42,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 30 transitions, 121 flow. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:42,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:42,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:01:42,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:42,651 INFO L124 PetriNetUnfolderBase]: 145/279 cut-off events. [2024-06-28 00:01:42,652 INFO L125 PetriNetUnfolderBase]: For 331/331 co-relation queries the response was YES. [2024-06-28 00:01:42,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 785 conditions, 279 events. 145/279 cut-off events. For 331/331 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1085 event pairs, 79 based on Foata normal form. 1/275 useless extension candidates. Maximal degree in co-relation 769. Up to 256 conditions per place. [2024-06-28 00:01:42,654 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 25 selfloop transitions, 8 changer transitions 0/38 dead transitions. [2024-06-28 00:01:42,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 38 transitions, 213 flow [2024-06-28 00:01:42,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:01:42,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:01:42,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 84 transitions. [2024-06-28 00:01:42,675 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-28 00:01:42,676 INFO L175 Difference]: Start difference. First operand has 38 places, 30 transitions, 121 flow. Second operand 6 states and 84 transitions. [2024-06-28 00:01:42,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 38 transitions, 213 flow [2024-06-28 00:01:42,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 38 transitions, 196 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-28 00:01:42,681 INFO L231 Difference]: Finished difference. Result has 42 places, 34 transitions, 150 flow [2024-06-28 00:01:42,681 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=150, PETRI_PLACES=42, PETRI_TRANSITIONS=34} [2024-06-28 00:01:42,682 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 11 predicate places. [2024-06-28 00:01:42,683 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 34 transitions, 150 flow [2024-06-28 00:01:42,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:42,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:42,683 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:42,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 00:01:42,684 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:01:42,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:42,685 INFO L85 PathProgramCache]: Analyzing trace with hash 260036671, now seen corresponding path program 1 times [2024-06-28 00:01:42,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:42,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511119506] [2024-06-28 00:01:42,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:42,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:42,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:44,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:44,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:44,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511119506] [2024-06-28 00:01:44,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511119506] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:44,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:44,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:01:44,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066541901] [2024-06-28 00:01:44,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:44,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:01:44,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:44,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:01:44,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:01:45,023 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-06-28 00:01:45,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 34 transitions, 150 flow. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:45,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:45,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-06-28 00:01:45,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:45,293 INFO L124 PetriNetUnfolderBase]: 141/277 cut-off events. [2024-06-28 00:01:45,294 INFO L125 PetriNetUnfolderBase]: For 422/422 co-relation queries the response was YES. [2024-06-28 00:01:45,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 818 conditions, 277 events. 141/277 cut-off events. For 422/422 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1046 event pairs, 24 based on Foata normal form. 4/280 useless extension candidates. Maximal degree in co-relation 800. Up to 215 conditions per place. [2024-06-28 00:01:45,296 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 31 selfloop transitions, 9 changer transitions 0/46 dead transitions. [2024-06-28 00:01:45,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 46 transitions, 258 flow [2024-06-28 00:01:45,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:01:45,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:01:45,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 105 transitions. [2024-06-28 00:01:45,298 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.546875 [2024-06-28 00:01:45,299 INFO L175 Difference]: Start difference. First operand has 42 places, 34 transitions, 150 flow. Second operand 6 states and 105 transitions. [2024-06-28 00:01:45,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 46 transitions, 258 flow [2024-06-28 00:01:45,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 46 transitions, 245 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-28 00:01:45,301 INFO L231 Difference]: Finished difference. Result has 44 places, 33 transitions, 151 flow [2024-06-28 00:01:45,302 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=151, PETRI_PLACES=44, PETRI_TRANSITIONS=33} [2024-06-28 00:01:45,302 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 13 predicate places. [2024-06-28 00:01:45,303 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 33 transitions, 151 flow [2024-06-28 00:01:45,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:45,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:45,303 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:45,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 00:01:45,304 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:01:45,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:45,304 INFO L85 PathProgramCache]: Analyzing trace with hash 633718762, now seen corresponding path program 1 times [2024-06-28 00:01:45,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:45,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140333003] [2024-06-28 00:01:45,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:45,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:45,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:46,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:46,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:46,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140333003] [2024-06-28 00:01:46,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140333003] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:46,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:46,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:01:46,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335650980] [2024-06-28 00:01:46,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:46,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:01:46,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:46,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:01:46,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:01:46,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:01:46,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 33 transitions, 151 flow. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:46,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:46,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:01:46,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:46,884 INFO L124 PetriNetUnfolderBase]: 155/309 cut-off events. [2024-06-28 00:01:46,884 INFO L125 PetriNetUnfolderBase]: For 645/645 co-relation queries the response was YES. [2024-06-28 00:01:46,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 957 conditions, 309 events. 155/309 cut-off events. For 645/645 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1230 event pairs, 40 based on Foata normal form. 2/310 useless extension candidates. Maximal degree in co-relation 938. Up to 244 conditions per place. [2024-06-28 00:01:46,888 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 30 selfloop transitions, 15 changer transitions 0/50 dead transitions. [2024-06-28 00:01:46,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 50 transitions, 308 flow [2024-06-28 00:01:46,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:01:46,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:01:46,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 104 transitions. [2024-06-28 00:01:46,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2024-06-28 00:01:46,890 INFO L175 Difference]: Start difference. First operand has 44 places, 33 transitions, 151 flow. Second operand 7 states and 104 transitions. [2024-06-28 00:01:46,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 50 transitions, 308 flow [2024-06-28 00:01:46,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 50 transitions, 279 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-28 00:01:46,897 INFO L231 Difference]: Finished difference. Result has 48 places, 40 transitions, 210 flow [2024-06-28 00:01:46,897 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=210, PETRI_PLACES=48, PETRI_TRANSITIONS=40} [2024-06-28 00:01:46,900 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 17 predicate places. [2024-06-28 00:01:46,901 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 40 transitions, 210 flow [2024-06-28 00:01:46,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:46,901 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:46,901 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:46,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 00:01:46,903 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:01:46,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:46,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1042483786, now seen corresponding path program 2 times [2024-06-28 00:01:46,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:46,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775416590] [2024-06-28 00:01:46,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:46,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:46,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:48,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:48,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:48,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775416590] [2024-06-28 00:01:48,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775416590] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:48,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:48,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:01:48,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805212285] [2024-06-28 00:01:48,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:48,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:01:48,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:48,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:01:48,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:01:48,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:01:48,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 40 transitions, 210 flow. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:48,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:48,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:01:48,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:48,524 INFO L124 PetriNetUnfolderBase]: 161/321 cut-off events. [2024-06-28 00:01:48,525 INFO L125 PetriNetUnfolderBase]: For 884/884 co-relation queries the response was YES. [2024-06-28 00:01:48,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1090 conditions, 321 events. 161/321 cut-off events. For 884/884 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1319 event pairs, 42 based on Foata normal form. 2/318 useless extension candidates. Maximal degree in co-relation 1068. Up to 254 conditions per place. [2024-06-28 00:01:48,528 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 31 selfloop transitions, 16 changer transitions 0/52 dead transitions. [2024-06-28 00:01:48,529 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 52 transitions, 359 flow [2024-06-28 00:01:48,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:01:48,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:01:48,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 93 transitions. [2024-06-28 00:01:48,530 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.484375 [2024-06-28 00:01:48,530 INFO L175 Difference]: Start difference. First operand has 48 places, 40 transitions, 210 flow. Second operand 6 states and 93 transitions. [2024-06-28 00:01:48,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 52 transitions, 359 flow [2024-06-28 00:01:48,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 52 transitions, 335 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-28 00:01:48,534 INFO L231 Difference]: Finished difference. Result has 51 places, 44 transitions, 258 flow [2024-06-28 00:01:48,534 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=258, PETRI_PLACES=51, PETRI_TRANSITIONS=44} [2024-06-28 00:01:48,535 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 20 predicate places. [2024-06-28 00:01:48,535 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 44 transitions, 258 flow [2024-06-28 00:01:48,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:48,536 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:48,536 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:48,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 00:01:48,536 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:01:48,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:48,537 INFO L85 PathProgramCache]: Analyzing trace with hash -1956532426, now seen corresponding path program 3 times [2024-06-28 00:01:48,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:48,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770769243] [2024-06-28 00:01:48,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:48,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:48,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:49,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:49,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:49,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770769243] [2024-06-28 00:01:49,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770769243] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:49,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:49,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:01:49,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2866636] [2024-06-28 00:01:49,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:49,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:01:49,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:49,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:01:49,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:01:49,902 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:01:49,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 44 transitions, 258 flow. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:49,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:49,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:01:49,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:50,088 INFO L124 PetriNetUnfolderBase]: 159/316 cut-off events. [2024-06-28 00:01:50,088 INFO L125 PetriNetUnfolderBase]: For 1218/1218 co-relation queries the response was YES. [2024-06-28 00:01:50,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1155 conditions, 316 events. 159/316 cut-off events. For 1218/1218 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1281 event pairs, 41 based on Foata normal form. 1/314 useless extension candidates. Maximal degree in co-relation 1132. Up to 259 conditions per place. [2024-06-28 00:01:50,092 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 33 selfloop transitions, 17 changer transitions 0/55 dead transitions. [2024-06-28 00:01:50,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 55 transitions, 412 flow [2024-06-28 00:01:50,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:01:50,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:01:50,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 89 transitions. [2024-06-28 00:01:50,099 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4635416666666667 [2024-06-28 00:01:50,099 INFO L175 Difference]: Start difference. First operand has 51 places, 44 transitions, 258 flow. Second operand 6 states and 89 transitions. [2024-06-28 00:01:50,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 55 transitions, 412 flow [2024-06-28 00:01:50,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 55 transitions, 375 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-06-28 00:01:50,105 INFO L231 Difference]: Finished difference. Result has 57 places, 50 transitions, 325 flow [2024-06-28 00:01:50,108 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=325, PETRI_PLACES=57, PETRI_TRANSITIONS=50} [2024-06-28 00:01:50,111 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 26 predicate places. [2024-06-28 00:01:50,111 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 50 transitions, 325 flow [2024-06-28 00:01:50,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:50,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:50,111 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:50,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 00:01:50,112 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:01:50,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:50,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1956523498, now seen corresponding path program 1 times [2024-06-28 00:01:50,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:50,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888363917] [2024-06-28 00:01:50,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:50,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:50,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:51,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:51,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:51,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888363917] [2024-06-28 00:01:51,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888363917] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:51,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:51,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:01:51,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503010674] [2024-06-28 00:01:51,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:51,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:01:51,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:51,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:01:51,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:01:51,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:01:51,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 50 transitions, 325 flow. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:51,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:51,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:01:51,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:51,893 INFO L124 PetriNetUnfolderBase]: 165/332 cut-off events. [2024-06-28 00:01:51,893 INFO L125 PetriNetUnfolderBase]: For 1384/1384 co-relation queries the response was YES. [2024-06-28 00:01:51,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1242 conditions, 332 events. 165/332 cut-off events. For 1384/1384 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1348 event pairs, 71 based on Foata normal form. 1/332 useless extension candidates. Maximal degree in co-relation 1215. Up to 284 conditions per place. [2024-06-28 00:01:51,897 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 43 selfloop transitions, 12 changer transitions 0/60 dead transitions. [2024-06-28 00:01:51,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 60 transitions, 467 flow [2024-06-28 00:01:51,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:01:51,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:01:51,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 98 transitions. [2024-06-28 00:01:51,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-28 00:01:51,899 INFO L175 Difference]: Start difference. First operand has 57 places, 50 transitions, 325 flow. Second operand 7 states and 98 transitions. [2024-06-28 00:01:51,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 60 transitions, 467 flow [2024-06-28 00:01:51,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 60 transitions, 445 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-06-28 00:01:51,903 INFO L231 Difference]: Finished difference. Result has 64 places, 54 transitions, 359 flow [2024-06-28 00:01:51,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=303, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=359, PETRI_PLACES=64, PETRI_TRANSITIONS=54} [2024-06-28 00:01:51,904 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 33 predicate places. [2024-06-28 00:01:51,904 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 54 transitions, 359 flow [2024-06-28 00:01:51,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:51,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:51,905 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:51,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 00:01:51,905 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:01:51,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:51,906 INFO L85 PathProgramCache]: Analyzing trace with hash 63069547, now seen corresponding path program 1 times [2024-06-28 00:01:51,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:51,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496744177] [2024-06-28 00:01:51,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:51,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:51,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:53,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:53,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:53,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496744177] [2024-06-28 00:01:53,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496744177] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:53,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:53,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:01:53,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426794551] [2024-06-28 00:01:53,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:53,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:01:53,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:53,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:01:53,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:01:53,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:01:53,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 54 transitions, 359 flow. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:53,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:53,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:01:53,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:54,193 INFO L124 PetriNetUnfolderBase]: 160/322 cut-off events. [2024-06-28 00:01:54,194 INFO L125 PetriNetUnfolderBase]: For 1731/1731 co-relation queries the response was YES. [2024-06-28 00:01:54,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1293 conditions, 322 events. 160/322 cut-off events. For 1731/1731 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1328 event pairs, 38 based on Foata normal form. 1/322 useless extension candidates. Maximal degree in co-relation 1262. Up to 249 conditions per place. [2024-06-28 00:01:54,197 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 41 selfloop transitions, 20 changer transitions 0/67 dead transitions. [2024-06-28 00:01:54,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 67 transitions, 532 flow [2024-06-28 00:01:54,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:01:54,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:01:54,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 116 transitions. [2024-06-28 00:01:54,200 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.453125 [2024-06-28 00:01:54,200 INFO L175 Difference]: Start difference. First operand has 64 places, 54 transitions, 359 flow. Second operand 8 states and 116 transitions. [2024-06-28 00:01:54,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 67 transitions, 532 flow [2024-06-28 00:01:54,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 67 transitions, 509 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-28 00:01:54,205 INFO L231 Difference]: Finished difference. Result has 68 places, 56 transitions, 403 flow [2024-06-28 00:01:54,206 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=403, PETRI_PLACES=68, PETRI_TRANSITIONS=56} [2024-06-28 00:01:54,207 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 37 predicate places. [2024-06-28 00:01:54,207 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 56 transitions, 403 flow [2024-06-28 00:01:54,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:54,208 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:54,208 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:54,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 00:01:54,210 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:01:54,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:54,211 INFO L85 PathProgramCache]: Analyzing trace with hash 474644567, now seen corresponding path program 1 times [2024-06-28 00:01:54,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:54,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718663971] [2024-06-28 00:01:54,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:54,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:54,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:55,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:55,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:55,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718663971] [2024-06-28 00:01:55,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718663971] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:55,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:55,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:01:55,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314938502] [2024-06-28 00:01:55,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:55,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:01:55,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:55,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:01:55,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:01:55,814 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 00:01:55,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 56 transitions, 403 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:55,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:55,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 00:01:55,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:56,054 INFO L124 PetriNetUnfolderBase]: 194/376 cut-off events. [2024-06-28 00:01:56,054 INFO L125 PetriNetUnfolderBase]: For 2286/2286 co-relation queries the response was YES. [2024-06-28 00:01:56,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1564 conditions, 376 events. 194/376 cut-off events. For 2286/2286 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1562 event pairs, 45 based on Foata normal form. 1/376 useless extension candidates. Maximal degree in co-relation 1532. Up to 322 conditions per place. [2024-06-28 00:01:56,059 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 51 selfloop transitions, 17 changer transitions 0/72 dead transitions. [2024-06-28 00:01:56,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 72 transitions, 599 flow [2024-06-28 00:01:56,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:01:56,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:01:56,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-06-28 00:01:56,063 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-28 00:01:56,063 INFO L175 Difference]: Start difference. First operand has 68 places, 56 transitions, 403 flow. Second operand 9 states and 117 transitions. [2024-06-28 00:01:56,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 72 transitions, 599 flow [2024-06-28 00:01:56,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 72 transitions, 547 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-28 00:01:56,072 INFO L231 Difference]: Finished difference. Result has 72 places, 61 transitions, 431 flow [2024-06-28 00:01:56,072 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=352, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=431, PETRI_PLACES=72, PETRI_TRANSITIONS=61} [2024-06-28 00:01:56,073 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 41 predicate places. [2024-06-28 00:01:56,073 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 61 transitions, 431 flow [2024-06-28 00:01:56,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:56,074 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:56,074 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:56,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 00:01:56,074 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:01:56,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:56,075 INFO L85 PathProgramCache]: Analyzing trace with hash -764068861, now seen corresponding path program 2 times [2024-06-28 00:01:56,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:56,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017045956] [2024-06-28 00:01:56,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:56,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:56,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:57,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:57,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:57,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017045956] [2024-06-28 00:01:57,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017045956] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:57,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:57,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:01:57,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282782891] [2024-06-28 00:01:57,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:57,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:01:57,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:57,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:01:57,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:01:58,042 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:01:58,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 61 transitions, 431 flow. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:58,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:58,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:01:58,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:58,424 INFO L124 PetriNetUnfolderBase]: 180/362 cut-off events. [2024-06-28 00:01:58,425 INFO L125 PetriNetUnfolderBase]: For 2594/2594 co-relation queries the response was YES. [2024-06-28 00:01:58,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1604 conditions, 362 events. 180/362 cut-off events. For 2594/2594 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1564 event pairs, 41 based on Foata normal form. 1/359 useless extension candidates. Maximal degree in co-relation 1570. Up to 282 conditions per place. [2024-06-28 00:01:58,429 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 43 selfloop transitions, 20 changer transitions 0/70 dead transitions. [2024-06-28 00:01:58,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 70 transitions, 597 flow [2024-06-28 00:01:58,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:01:58,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:01:58,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 105 transitions. [2024-06-28 00:01:58,431 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46875 [2024-06-28 00:01:58,431 INFO L175 Difference]: Start difference. First operand has 72 places, 61 transitions, 431 flow. Second operand 7 states and 105 transitions. [2024-06-28 00:01:58,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 70 transitions, 597 flow [2024-06-28 00:01:58,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 70 transitions, 564 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-06-28 00:01:58,437 INFO L231 Difference]: Finished difference. Result has 75 places, 63 transitions, 469 flow [2024-06-28 00:01:58,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=398, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=469, PETRI_PLACES=75, PETRI_TRANSITIONS=63} [2024-06-28 00:01:58,437 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 44 predicate places. [2024-06-28 00:01:58,438 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 63 transitions, 469 flow [2024-06-28 00:01:58,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:58,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:58,438 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:58,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 00:01:58,439 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:01:58,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:58,439 INFO L85 PathProgramCache]: Analyzing trace with hash 968036949, now seen corresponding path program 3 times [2024-06-28 00:01:58,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:58,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294236935] [2024-06-28 00:01:58,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:58,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:58,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:00,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:00,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:00,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294236935] [2024-06-28 00:02:00,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294236935] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:00,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:00,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:02:00,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050580593] [2024-06-28 00:02:00,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:00,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:02:00,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:00,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:02:00,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:02:00,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:02:00,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 63 transitions, 469 flow. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:00,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:00,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:02:00,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:00,721 INFO L124 PetriNetUnfolderBase]: 177/355 cut-off events. [2024-06-28 00:02:00,722 INFO L125 PetriNetUnfolderBase]: For 3013/3013 co-relation queries the response was YES. [2024-06-28 00:02:00,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1623 conditions, 355 events. 177/355 cut-off events. For 3013/3013 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1515 event pairs, 44 based on Foata normal form. 2/352 useless extension candidates. Maximal degree in co-relation 1588. Up to 251 conditions per place. [2024-06-28 00:02:00,726 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 34 selfloop transitions, 30 changer transitions 0/71 dead transitions. [2024-06-28 00:02:00,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 71 transitions, 637 flow [2024-06-28 00:02:00,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:02:00,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:02:00,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 113 transitions. [2024-06-28 00:02:00,728 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44140625 [2024-06-28 00:02:00,728 INFO L175 Difference]: Start difference. First operand has 75 places, 63 transitions, 469 flow. Second operand 8 states and 113 transitions. [2024-06-28 00:02:00,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 71 transitions, 637 flow [2024-06-28 00:02:00,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 71 transitions, 582 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-28 00:02:00,734 INFO L231 Difference]: Finished difference. Result has 78 places, 65 transitions, 509 flow [2024-06-28 00:02:00,734 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=509, PETRI_PLACES=78, PETRI_TRANSITIONS=65} [2024-06-28 00:02:00,734 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 47 predicate places. [2024-06-28 00:02:00,735 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 65 transitions, 509 flow [2024-06-28 00:02:00,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:00,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:00,735 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:00,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 00:02:00,735 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:02:00,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:00,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1334666903, now seen corresponding path program 2 times [2024-06-28 00:02:00,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:00,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064702691] [2024-06-28 00:02:00,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:00,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:00,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:02,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:02,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:02,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064702691] [2024-06-28 00:02:02,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064702691] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:02,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:02,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:02:02,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184530790] [2024-06-28 00:02:02,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:02,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:02:02,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:02,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:02:02,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:02:02,163 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 00:02:02,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 65 transitions, 509 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:02,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:02,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 00:02:02,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:02,417 INFO L124 PetriNetUnfolderBase]: 199/380 cut-off events. [2024-06-28 00:02:02,418 INFO L125 PetriNetUnfolderBase]: For 3410/3410 co-relation queries the response was YES. [2024-06-28 00:02:02,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1768 conditions, 380 events. 199/380 cut-off events. For 3410/3410 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1583 event pairs, 45 based on Foata normal form. 1/378 useless extension candidates. Maximal degree in co-relation 1732. Up to 331 conditions per place. [2024-06-28 00:02:02,422 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 56 selfloop transitions, 17 changer transitions 0/77 dead transitions. [2024-06-28 00:02:02,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 77 transitions, 705 flow [2024-06-28 00:02:02,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:02:02,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:02:02,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 106 transitions. [2024-06-28 00:02:02,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4140625 [2024-06-28 00:02:02,424 INFO L175 Difference]: Start difference. First operand has 78 places, 65 transitions, 509 flow. Second operand 8 states and 106 transitions. [2024-06-28 00:02:02,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 77 transitions, 705 flow [2024-06-28 00:02:02,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 77 transitions, 626 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-28 00:02:02,431 INFO L231 Difference]: Finished difference. Result has 81 places, 69 transitions, 508 flow [2024-06-28 00:02:02,431 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=430, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=508, PETRI_PLACES=81, PETRI_TRANSITIONS=69} [2024-06-28 00:02:02,432 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 50 predicate places. [2024-06-28 00:02:02,432 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 69 transitions, 508 flow [2024-06-28 00:02:02,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:02,432 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:02,433 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:02,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 00:02:02,433 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:02:02,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:02,434 INFO L85 PathProgramCache]: Analyzing trace with hash 968043893, now seen corresponding path program 3 times [2024-06-28 00:02:02,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:02,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994807948] [2024-06-28 00:02:02,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:02,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:02,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:03,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:03,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:03,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994807948] [2024-06-28 00:02:03,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994807948] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:03,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:03,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:02:03,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688626171] [2024-06-28 00:02:03,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:03,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:02:03,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:03,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:02:03,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:02:04,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 00:02:04,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 69 transitions, 508 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:04,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:04,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 00:02:04,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:04,267 INFO L124 PetriNetUnfolderBase]: 205/397 cut-off events. [2024-06-28 00:02:04,267 INFO L125 PetriNetUnfolderBase]: For 3786/3786 co-relation queries the response was YES. [2024-06-28 00:02:04,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1837 conditions, 397 events. 205/397 cut-off events. For 3786/3786 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1698 event pairs, 45 based on Foata normal form. 1/395 useless extension candidates. Maximal degree in co-relation 1799. Up to 305 conditions per place. [2024-06-28 00:02:04,272 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 52 selfloop transitions, 30 changer transitions 0/86 dead transitions. [2024-06-28 00:02:04,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 86 transitions, 786 flow [2024-06-28 00:02:04,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:02:04,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:02:04,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 111 transitions. [2024-06-28 00:02:04,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43359375 [2024-06-28 00:02:04,274 INFO L175 Difference]: Start difference. First operand has 81 places, 69 transitions, 508 flow. Second operand 8 states and 111 transitions. [2024-06-28 00:02:04,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 86 transitions, 786 flow [2024-06-28 00:02:04,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 86 transitions, 729 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-28 00:02:04,281 INFO L231 Difference]: Finished difference. Result has 87 places, 78 transitions, 619 flow [2024-06-28 00:02:04,281 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=451, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=619, PETRI_PLACES=87, PETRI_TRANSITIONS=78} [2024-06-28 00:02:04,283 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 56 predicate places. [2024-06-28 00:02:04,283 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 78 transitions, 619 flow [2024-06-28 00:02:04,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:04,283 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:04,284 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:04,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 00:02:04,284 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:02:04,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:04,285 INFO L85 PathProgramCache]: Analyzing trace with hash -970516551, now seen corresponding path program 4 times [2024-06-28 00:02:04,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:04,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128553957] [2024-06-28 00:02:04,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:04,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:04,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:05,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:05,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:05,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128553957] [2024-06-28 00:02:05,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128553957] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:05,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:05,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:02:05,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115406950] [2024-06-28 00:02:05,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:05,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:02:05,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:05,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:02:05,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:02:05,800 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 00:02:05,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 78 transitions, 619 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:05,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:05,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 00:02:05,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:06,030 INFO L124 PetriNetUnfolderBase]: 208/402 cut-off events. [2024-06-28 00:02:06,030 INFO L125 PetriNetUnfolderBase]: For 4368/4368 co-relation queries the response was YES. [2024-06-28 00:02:06,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2001 conditions, 402 events. 208/402 cut-off events. For 4368/4368 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1722 event pairs, 45 based on Foata normal form. 1/400 useless extension candidates. Maximal degree in co-relation 1959. Up to 309 conditions per place. [2024-06-28 00:02:06,035 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 47 selfloop transitions, 38 changer transitions 0/89 dead transitions. [2024-06-28 00:02:06,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 89 transitions, 872 flow [2024-06-28 00:02:06,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:02:06,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:02:06,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 109 transitions. [2024-06-28 00:02:06,037 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42578125 [2024-06-28 00:02:06,037 INFO L175 Difference]: Start difference. First operand has 87 places, 78 transitions, 619 flow. Second operand 8 states and 109 transitions. [2024-06-28 00:02:06,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 89 transitions, 872 flow [2024-06-28 00:02:06,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 89 transitions, 837 flow, removed 11 selfloop flow, removed 2 redundant places. [2024-06-28 00:02:06,051 INFO L231 Difference]: Finished difference. Result has 93 places, 81 transitions, 700 flow [2024-06-28 00:02:06,052 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=584, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=700, PETRI_PLACES=93, PETRI_TRANSITIONS=81} [2024-06-28 00:02:06,053 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 62 predicate places. [2024-06-28 00:02:06,053 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 81 transitions, 700 flow [2024-06-28 00:02:06,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:06,053 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:06,053 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:06,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 00:02:06,054 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:02:06,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:06,054 INFO L85 PathProgramCache]: Analyzing trace with hash 976318103, now seen corresponding path program 5 times [2024-06-28 00:02:06,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:06,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399238184] [2024-06-28 00:02:06,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:06,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:06,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:07,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:07,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:07,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399238184] [2024-06-28 00:02:07,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399238184] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:07,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:07,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:02:07,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428287816] [2024-06-28 00:02:07,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:07,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:02:07,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:07,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:02:07,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:02:07,631 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 00:02:07,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 81 transitions, 700 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:07,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:07,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 00:02:07,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:07,865 INFO L124 PetriNetUnfolderBase]: 206/399 cut-off events. [2024-06-28 00:02:07,865 INFO L125 PetriNetUnfolderBase]: For 4667/4667 co-relation queries the response was YES. [2024-06-28 00:02:07,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2048 conditions, 399 events. 206/399 cut-off events. For 4667/4667 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1692 event pairs, 45 based on Foata normal form. 1/397 useless extension candidates. Maximal degree in co-relation 2004. Up to 307 conditions per place. [2024-06-28 00:02:07,870 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 49 selfloop transitions, 35 changer transitions 0/88 dead transitions. [2024-06-28 00:02:07,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 88 transitions, 884 flow [2024-06-28 00:02:07,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:02:07,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:02:07,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 109 transitions. [2024-06-28 00:02:07,871 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42578125 [2024-06-28 00:02:07,871 INFO L175 Difference]: Start difference. First operand has 93 places, 81 transitions, 700 flow. Second operand 8 states and 109 transitions. [2024-06-28 00:02:07,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 88 transitions, 884 flow [2024-06-28 00:02:07,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 88 transitions, 817 flow, removed 16 selfloop flow, removed 3 redundant places. [2024-06-28 00:02:07,881 INFO L231 Difference]: Finished difference. Result has 98 places, 81 transitions, 708 flow [2024-06-28 00:02:07,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=633, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=708, PETRI_PLACES=98, PETRI_TRANSITIONS=81} [2024-06-28 00:02:07,882 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 67 predicate places. [2024-06-28 00:02:07,882 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 81 transitions, 708 flow [2024-06-28 00:02:07,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:07,882 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:07,883 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:07,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 00:02:07,883 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:02:07,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:07,884 INFO L85 PathProgramCache]: Analyzing trace with hash 976625685, now seen corresponding path program 1 times [2024-06-28 00:02:07,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:07,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523273137] [2024-06-28 00:02:07,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:07,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:07,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:09,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:09,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:09,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523273137] [2024-06-28 00:02:09,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523273137] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:09,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:09,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:02:09,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441407592] [2024-06-28 00:02:09,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:09,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:02:09,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:09,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:02:09,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:02:09,737 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 00:02:09,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 81 transitions, 708 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:09,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:09,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 00:02:09,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:10,154 INFO L124 PetriNetUnfolderBase]: 204/395 cut-off events. [2024-06-28 00:02:10,154 INFO L125 PetriNetUnfolderBase]: For 4883/4883 co-relation queries the response was YES. [2024-06-28 00:02:10,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2040 conditions, 395 events. 204/395 cut-off events. For 4883/4883 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1676 event pairs, 77 based on Foata normal form. 1/395 useless extension candidates. Maximal degree in co-relation 1995. Up to 345 conditions per place. [2024-06-28 00:02:10,159 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 71 selfloop transitions, 16 changer transitions 0/91 dead transitions. [2024-06-28 00:02:10,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 91 transitions, 910 flow [2024-06-28 00:02:10,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:02:10,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:02:10,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-06-28 00:02:10,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-28 00:02:10,161 INFO L175 Difference]: Start difference. First operand has 98 places, 81 transitions, 708 flow. Second operand 9 states and 114 transitions. [2024-06-28 00:02:10,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 91 transitions, 910 flow [2024-06-28 00:02:10,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 91 transitions, 860 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-06-28 00:02:10,172 INFO L231 Difference]: Finished difference. Result has 102 places, 83 transitions, 709 flow [2024-06-28 00:02:10,172 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=658, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=709, PETRI_PLACES=102, PETRI_TRANSITIONS=83} [2024-06-28 00:02:10,173 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 71 predicate places. [2024-06-28 00:02:10,173 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 83 transitions, 709 flow [2024-06-28 00:02:10,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:10,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:10,173 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:10,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 00:02:10,174 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:02:10,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:10,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1955372208, now seen corresponding path program 1 times [2024-06-28 00:02:10,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:10,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786165444] [2024-06-28 00:02:10,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:10,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:10,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:11,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:11,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:11,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786165444] [2024-06-28 00:02:11,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786165444] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:11,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:11,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:02:11,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651159261] [2024-06-28 00:02:11,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:11,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:02:11,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:11,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:02:11,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:02:11,646 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:02:11,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 83 transitions, 709 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) [2024-06-28 00:02:11,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:11,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:02:11,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:11,925 INFO L124 PetriNetUnfolderBase]: 207/403 cut-off events. [2024-06-28 00:02:11,925 INFO L125 PetriNetUnfolderBase]: For 5095/5095 co-relation queries the response was YES. [2024-06-28 00:02:11,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2086 conditions, 403 events. 207/403 cut-off events. For 5095/5095 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1723 event pairs, 40 based on Foata normal form. 1/403 useless extension candidates. Maximal degree in co-relation 2041. Up to 331 conditions per place. [2024-06-28 00:02:11,929 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 68 selfloop transitions, 23 changer transitions 0/95 dead transitions. [2024-06-28 00:02:11,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 95 transitions, 935 flow [2024-06-28 00:02:11,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:02:11,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:02:11,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 116 transitions. [2024-06-28 00:02:11,931 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.453125 [2024-06-28 00:02:11,931 INFO L175 Difference]: Start difference. First operand has 102 places, 83 transitions, 709 flow. Second operand 8 states and 116 transitions. [2024-06-28 00:02:11,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 95 transitions, 935 flow [2024-06-28 00:02:11,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 95 transitions, 835 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-28 00:02:11,940 INFO L231 Difference]: Finished difference. Result has 100 places, 85 transitions, 685 flow [2024-06-28 00:02:11,940 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=609, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=685, PETRI_PLACES=100, PETRI_TRANSITIONS=85} [2024-06-28 00:02:11,941 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 69 predicate places. [2024-06-28 00:02:11,941 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 85 transitions, 685 flow [2024-06-28 00:02:11,941 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) [2024-06-28 00:02:11,941 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:11,941 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:11,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 00:02:11,942 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:02:11,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:11,942 INFO L85 PathProgramCache]: Analyzing trace with hash 201091108, now seen corresponding path program 2 times [2024-06-28 00:02:11,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:11,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003524941] [2024-06-28 00:02:11,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:11,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:11,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:13,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:13,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:13,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003524941] [2024-06-28 00:02:13,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003524941] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:13,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:13,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:02:13,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916366847] [2024-06-28 00:02:13,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:13,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:02:13,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:13,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:02:13,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:02:13,511 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:02:13,511 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 85 transitions, 685 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) [2024-06-28 00:02:13,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:13,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:02:13,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:13,732 INFO L124 PetriNetUnfolderBase]: 215/416 cut-off events. [2024-06-28 00:02:13,733 INFO L125 PetriNetUnfolderBase]: For 5875/5875 co-relation queries the response was YES. [2024-06-28 00:02:13,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2196 conditions, 416 events. 215/416 cut-off events. For 5875/5875 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1777 event pairs, 43 based on Foata normal form. 1/414 useless extension candidates. Maximal degree in co-relation 2152. Up to 301 conditions per place. [2024-06-28 00:02:13,738 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 60 selfloop transitions, 37 changer transitions 0/101 dead transitions. [2024-06-28 00:02:13,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 101 transitions, 1049 flow [2024-06-28 00:02:13,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:02:13,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:02:13,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 122 transitions. [2024-06-28 00:02:13,740 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4765625 [2024-06-28 00:02:13,741 INFO L175 Difference]: Start difference. First operand has 100 places, 85 transitions, 685 flow. Second operand 8 states and 122 transitions. [2024-06-28 00:02:13,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 101 transitions, 1049 flow [2024-06-28 00:02:13,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 101 transitions, 991 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-28 00:02:13,752 INFO L231 Difference]: Finished difference. Result has 102 places, 91 transitions, 782 flow [2024-06-28 00:02:13,752 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=627, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=782, PETRI_PLACES=102, PETRI_TRANSITIONS=91} [2024-06-28 00:02:13,753 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 71 predicate places. [2024-06-28 00:02:13,753 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 91 transitions, 782 flow [2024-06-28 00:02:13,753 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) [2024-06-28 00:02:13,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:13,753 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:13,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 00:02:13,754 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:02:13,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:13,754 INFO L85 PathProgramCache]: Analyzing trace with hash 210614308, now seen corresponding path program 3 times [2024-06-28 00:02:13,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:13,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315422881] [2024-06-28 00:02:13,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:13,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:13,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:15,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:15,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:15,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315422881] [2024-06-28 00:02:15,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315422881] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:15,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:15,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:02:15,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934675534] [2024-06-28 00:02:15,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:15,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:02:15,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:15,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:02:15,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:02:15,633 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 00:02:15,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 91 transitions, 782 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:15,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:15,633 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 00:02:15,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:15,938 INFO L124 PetriNetUnfolderBase]: 218/420 cut-off events. [2024-06-28 00:02:15,939 INFO L125 PetriNetUnfolderBase]: For 6580/6580 co-relation queries the response was YES. [2024-06-28 00:02:15,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2297 conditions, 420 events. 218/420 cut-off events. For 6580/6580 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1801 event pairs, 76 based on Foata normal form. 1/420 useless extension candidates. Maximal degree in co-relation 2252. Up to 368 conditions per place. [2024-06-28 00:02:15,943 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 81 selfloop transitions, 16 changer transitions 0/101 dead transitions. [2024-06-28 00:02:15,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 101 transitions, 1022 flow [2024-06-28 00:02:15,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:02:15,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:02:15,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-28 00:02:15,945 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38125 [2024-06-28 00:02:15,945 INFO L175 Difference]: Start difference. First operand has 102 places, 91 transitions, 782 flow. Second operand 10 states and 122 transitions. [2024-06-28 00:02:15,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 101 transitions, 1022 flow [2024-06-28 00:02:15,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 101 transitions, 982 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-06-28 00:02:15,956 INFO L231 Difference]: Finished difference. Result has 109 places, 93 transitions, 811 flow [2024-06-28 00:02:15,957 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=742, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=811, PETRI_PLACES=109, PETRI_TRANSITIONS=93} [2024-06-28 00:02:15,957 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 78 predicate places. [2024-06-28 00:02:15,957 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 93 transitions, 811 flow [2024-06-28 00:02:15,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:15,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:15,958 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:15,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 00:02:15,958 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:02:15,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:15,958 INFO L85 PathProgramCache]: Analyzing trace with hash 210287878, now seen corresponding path program 4 times [2024-06-28 00:02:15,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:15,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898854908] [2024-06-28 00:02:15,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:15,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:15,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:17,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:17,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:17,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898854908] [2024-06-28 00:02:17,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898854908] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:17,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:17,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:02:17,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298480251] [2024-06-28 00:02:17,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:17,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:02:17,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:17,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:02:17,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:02:17,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:02:17,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 93 transitions, 811 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) [2024-06-28 00:02:17,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:17,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:02:17,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:17,638 INFO L124 PetriNetUnfolderBase]: 216/420 cut-off events. [2024-06-28 00:02:17,638 INFO L125 PetriNetUnfolderBase]: For 6865/6865 co-relation queries the response was YES. [2024-06-28 00:02:17,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2298 conditions, 420 events. 216/420 cut-off events. For 6865/6865 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1817 event pairs, 43 based on Foata normal form. 1/417 useless extension candidates. Maximal degree in co-relation 2250. Up to 303 conditions per place. [2024-06-28 00:02:17,642 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 56 selfloop transitions, 42 changer transitions 0/102 dead transitions. [2024-06-28 00:02:17,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 102 transitions, 1069 flow [2024-06-28 00:02:17,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:02:17,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:02:17,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 120 transitions. [2024-06-28 00:02:17,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46875 [2024-06-28 00:02:17,644 INFO L175 Difference]: Start difference. First operand has 109 places, 93 transitions, 811 flow. Second operand 8 states and 120 transitions. [2024-06-28 00:02:17,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 102 transitions, 1069 flow [2024-06-28 00:02:17,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 102 transitions, 1004 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-28 00:02:17,658 INFO L231 Difference]: Finished difference. Result has 109 places, 93 transitions, 835 flow [2024-06-28 00:02:17,658 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=746, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=835, PETRI_PLACES=109, PETRI_TRANSITIONS=93} [2024-06-28 00:02:17,659 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 78 predicate places. [2024-06-28 00:02:17,659 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 93 transitions, 835 flow [2024-06-28 00:02:17,659 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) [2024-06-28 00:02:17,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:17,659 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:17,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 00:02:17,660 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:02:17,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:17,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1158862666, now seen corresponding path program 5 times [2024-06-28 00:02:17,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:17,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846582721] [2024-06-28 00:02:17,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:17,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:17,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:19,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:19,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:19,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846582721] [2024-06-28 00:02:19,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846582721] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:19,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:19,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:02:19,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287796976] [2024-06-28 00:02:19,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:19,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:02:19,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:19,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:02:19,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:02:19,276 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:02:19,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 93 transitions, 835 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) [2024-06-28 00:02:19,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:19,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:02:19,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:19,600 INFO L124 PetriNetUnfolderBase]: 214/413 cut-off events. [2024-06-28 00:02:19,600 INFO L125 PetriNetUnfolderBase]: For 7076/7076 co-relation queries the response was YES. [2024-06-28 00:02:19,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2305 conditions, 413 events. 214/413 cut-off events. For 7076/7076 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1758 event pairs, 43 based on Foata normal form. 1/411 useless extension candidates. Maximal degree in co-relation 2257. Up to 301 conditions per place. [2024-06-28 00:02:19,604 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 60 selfloop transitions, 37 changer transitions 0/101 dead transitions. [2024-06-28 00:02:19,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 101 transitions, 1047 flow [2024-06-28 00:02:19,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:02:19,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:02:19,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 121 transitions. [2024-06-28 00:02:19,606 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47265625 [2024-06-28 00:02:19,606 INFO L175 Difference]: Start difference. First operand has 109 places, 93 transitions, 835 flow. Second operand 8 states and 121 transitions. [2024-06-28 00:02:19,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 101 transitions, 1047 flow [2024-06-28 00:02:19,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 101 transitions, 958 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-28 00:02:19,616 INFO L231 Difference]: Finished difference. Result has 111 places, 93 transitions, 825 flow [2024-06-28 00:02:19,616 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=746, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=825, PETRI_PLACES=111, PETRI_TRANSITIONS=93} [2024-06-28 00:02:19,616 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 80 predicate places. [2024-06-28 00:02:19,616 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 93 transitions, 825 flow [2024-06-28 00:02:19,617 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) [2024-06-28 00:02:19,617 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:19,617 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:19,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 00:02:19,617 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:02:19,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:19,618 INFO L85 PathProgramCache]: Analyzing trace with hash 210626212, now seen corresponding path program 1 times [2024-06-28 00:02:19,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:19,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099795344] [2024-06-28 00:02:19,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:19,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:19,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:21,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:21,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:21,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099795344] [2024-06-28 00:02:21,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099795344] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:21,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:21,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:02:21,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209670340] [2024-06-28 00:02:21,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:21,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:02:21,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:21,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:02:21,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:02:21,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 00:02:21,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 93 transitions, 825 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:21,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:21,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 00:02:21,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:21,977 INFO L124 PetriNetUnfolderBase]: 211/411 cut-off events. [2024-06-28 00:02:21,977 INFO L125 PetriNetUnfolderBase]: For 7352/7352 co-relation queries the response was YES. [2024-06-28 00:02:21,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2253 conditions, 411 events. 211/411 cut-off events. For 7352/7352 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1765 event pairs, 75 based on Foata normal form. 2/412 useless extension candidates. Maximal degree in co-relation 2204. Up to 351 conditions per place. [2024-06-28 00:02:21,981 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 82 selfloop transitions, 17 changer transitions 0/103 dead transitions. [2024-06-28 00:02:21,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 103 transitions, 1045 flow [2024-06-28 00:02:21,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:02:21,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:02:21,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-28 00:02:21,982 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-28 00:02:21,983 INFO L175 Difference]: Start difference. First operand has 111 places, 93 transitions, 825 flow. Second operand 10 states and 124 transitions. [2024-06-28 00:02:21,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 103 transitions, 1045 flow [2024-06-28 00:02:21,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 103 transitions, 926 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-28 00:02:21,994 INFO L231 Difference]: Finished difference. Result has 113 places, 93 transitions, 744 flow [2024-06-28 00:02:21,994 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=706, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=744, PETRI_PLACES=113, PETRI_TRANSITIONS=93} [2024-06-28 00:02:21,995 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 82 predicate places. [2024-06-28 00:02:21,995 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 93 transitions, 744 flow [2024-06-28 00:02:21,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:21,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:21,996 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:21,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 00:02:21,996 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:02:21,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:21,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1830078942, now seen corresponding path program 1 times [2024-06-28 00:02:21,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:21,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648398297] [2024-06-28 00:02:21,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:21,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:22,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:23,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:23,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:23,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648398297] [2024-06-28 00:02:23,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648398297] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:23,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:23,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:02:23,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011512003] [2024-06-28 00:02:23,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:23,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:02:23,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:23,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:02:23,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:02:23,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:02:23,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 93 transitions, 744 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) [2024-06-28 00:02:23,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:23,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:02:23,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:23,856 INFO L124 PetriNetUnfolderBase]: 205/418 cut-off events. [2024-06-28 00:02:23,857 INFO L125 PetriNetUnfolderBase]: For 7335/7335 co-relation queries the response was YES. [2024-06-28 00:02:23,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2191 conditions, 418 events. 205/418 cut-off events. For 7335/7335 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1913 event pairs, 30 based on Foata normal form. 2/419 useless extension candidates. Maximal degree in co-relation 2140. Up to 315 conditions per place. [2024-06-28 00:02:23,862 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 82 selfloop transitions, 20 changer transitions 0/111 dead transitions. [2024-06-28 00:02:23,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 111 transitions, 1022 flow [2024-06-28 00:02:23,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:02:23,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:02:23,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 128 transitions. [2024-06-28 00:02:23,865 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-28 00:02:23,865 INFO L175 Difference]: Start difference. First operand has 113 places, 93 transitions, 744 flow. Second operand 9 states and 128 transitions. [2024-06-28 00:02:23,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 111 transitions, 1022 flow [2024-06-28 00:02:23,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 111 transitions, 982 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-28 00:02:23,879 INFO L231 Difference]: Finished difference. Result has 115 places, 98 transitions, 797 flow [2024-06-28 00:02:23,879 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=704, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=797, PETRI_PLACES=115, PETRI_TRANSITIONS=98} [2024-06-28 00:02:23,880 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 84 predicate places. [2024-06-28 00:02:23,880 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 98 transitions, 797 flow [2024-06-28 00:02:23,880 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) [2024-06-28 00:02:23,880 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:23,880 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:23,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 00:02:23,880 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:02:23,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:23,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1395748824, now seen corresponding path program 2 times [2024-06-28 00:02:23,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:23,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892566750] [2024-06-28 00:02:23,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:23,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:23,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:25,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:25,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:25,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892566750] [2024-06-28 00:02:25,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892566750] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:25,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:25,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:02:25,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116619834] [2024-06-28 00:02:25,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:25,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:02:25,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:25,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:02:25,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:02:25,269 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:02:25,269 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 98 transitions, 797 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) [2024-06-28 00:02:25,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:25,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:02:25,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:25,568 INFO L124 PetriNetUnfolderBase]: 215/444 cut-off events. [2024-06-28 00:02:25,568 INFO L125 PetriNetUnfolderBase]: For 8528/8528 co-relation queries the response was YES. [2024-06-28 00:02:25,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2368 conditions, 444 events. 215/444 cut-off events. For 8528/8528 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2092 event pairs, 31 based on Foata normal form. 2/445 useless extension candidates. Maximal degree in co-relation 2315. Up to 332 conditions per place. [2024-06-28 00:02:25,574 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 87 selfloop transitions, 19 changer transitions 0/115 dead transitions. [2024-06-28 00:02:25,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 115 transitions, 1071 flow [2024-06-28 00:02:25,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:02:25,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:02:25,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 129 transitions. [2024-06-28 00:02:25,576 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4479166666666667 [2024-06-28 00:02:25,576 INFO L175 Difference]: Start difference. First operand has 115 places, 98 transitions, 797 flow. Second operand 9 states and 129 transitions. [2024-06-28 00:02:25,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 115 transitions, 1071 flow [2024-06-28 00:02:25,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 115 transitions, 1022 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-28 00:02:25,593 INFO L231 Difference]: Finished difference. Result has 120 places, 100 transitions, 818 flow [2024-06-28 00:02:25,593 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=748, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=818, PETRI_PLACES=120, PETRI_TRANSITIONS=100} [2024-06-28 00:02:25,594 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 89 predicate places. [2024-06-28 00:02:25,594 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 100 transitions, 818 flow [2024-06-28 00:02:25,594 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) [2024-06-28 00:02:25,594 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:25,595 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:25,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 00:02:25,595 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:02:25,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:25,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1392886904, now seen corresponding path program 1 times [2024-06-28 00:02:25,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:25,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687282764] [2024-06-28 00:02:25,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:25,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:25,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:27,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:27,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:27,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687282764] [2024-06-28 00:02:27,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687282764] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:27,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:27,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:02:27,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797423126] [2024-06-28 00:02:27,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:27,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:02:27,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:27,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:02:27,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:02:27,433 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 00:02:27,434 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 100 transitions, 818 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:27,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:27,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 00:02:27,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:27,679 INFO L124 PetriNetUnfolderBase]: 245/482 cut-off events. [2024-06-28 00:02:27,680 INFO L125 PetriNetUnfolderBase]: For 9020/9020 co-relation queries the response was YES. [2024-06-28 00:02:27,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2555 conditions, 482 events. 245/482 cut-off events. For 9020/9020 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2204 event pairs, 32 based on Foata normal form. 1/482 useless extension candidates. Maximal degree in co-relation 2500. Up to 401 conditions per place. [2024-06-28 00:02:27,684 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 90 selfloop transitions, 23 changer transitions 0/117 dead transitions. [2024-06-28 00:02:27,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 117 transitions, 1118 flow [2024-06-28 00:02:27,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:02:27,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:02:27,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-28 00:02:27,685 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.409375 [2024-06-28 00:02:27,685 INFO L175 Difference]: Start difference. First operand has 120 places, 100 transitions, 818 flow. Second operand 10 states and 131 transitions. [2024-06-28 00:02:27,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 117 transitions, 1118 flow [2024-06-28 00:02:27,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 117 transitions, 1068 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-28 00:02:27,704 INFO L231 Difference]: Finished difference. Result has 125 places, 104 transitions, 868 flow [2024-06-28 00:02:27,705 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=768, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=868, PETRI_PLACES=125, PETRI_TRANSITIONS=104} [2024-06-28 00:02:27,705 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 94 predicate places. [2024-06-28 00:02:27,705 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 104 transitions, 868 flow [2024-06-28 00:02:27,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:27,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:27,706 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:27,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 00:02:27,706 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:02:27,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:27,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1111961560, now seen corresponding path program 3 times [2024-06-28 00:02:27,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:27,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986075177] [2024-06-28 00:02:27,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:27,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:27,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:29,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:29,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:29,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986075177] [2024-06-28 00:02:29,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986075177] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:29,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:29,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:02:29,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326180731] [2024-06-28 00:02:29,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:29,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:02:29,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:29,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:02:29,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:02:29,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:02:29,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 104 transitions, 868 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) [2024-06-28 00:02:29,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:29,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:02:29,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:29,684 INFO L124 PetriNetUnfolderBase]: 223/463 cut-off events. [2024-06-28 00:02:29,684 INFO L125 PetriNetUnfolderBase]: For 10215/10215 co-relation queries the response was YES. [2024-06-28 00:02:29,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2503 conditions, 463 events. 223/463 cut-off events. For 10215/10215 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2235 event pairs, 35 based on Foata normal form. 4/464 useless extension candidates. Maximal degree in co-relation 2446. Up to 335 conditions per place. [2024-06-28 00:02:29,689 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 80 selfloop transitions, 27 changer transitions 0/117 dead transitions. [2024-06-28 00:02:29,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 117 transitions, 1132 flow [2024-06-28 00:02:29,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:02:29,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:02:29,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 128 transitions. [2024-06-28 00:02:29,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-28 00:02:29,690 INFO L175 Difference]: Start difference. First operand has 125 places, 104 transitions, 868 flow. Second operand 9 states and 128 transitions. [2024-06-28 00:02:29,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 117 transitions, 1132 flow [2024-06-28 00:02:29,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 117 transitions, 1065 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-28 00:02:29,706 INFO L231 Difference]: Finished difference. Result has 127 places, 105 transitions, 881 flow [2024-06-28 00:02:29,706 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=801, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=881, PETRI_PLACES=127, PETRI_TRANSITIONS=105} [2024-06-28 00:02:29,706 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 96 predicate places. [2024-06-28 00:02:29,706 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 105 transitions, 881 flow [2024-06-28 00:02:29,707 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) [2024-06-28 00:02:29,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:29,707 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:29,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 00:02:29,707 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:02:29,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:29,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1350025446, now seen corresponding path program 2 times [2024-06-28 00:02:29,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:29,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807790947] [2024-06-28 00:02:29,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:29,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:29,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:31,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:31,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:31,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807790947] [2024-06-28 00:02:31,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807790947] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:31,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:31,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:02:31,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643963917] [2024-06-28 00:02:31,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:31,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:02:31,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:31,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:02:31,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:02:31,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 00:02:31,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 105 transitions, 881 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:31,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:31,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 00:02:31,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:31,752 INFO L124 PetriNetUnfolderBase]: 261/510 cut-off events. [2024-06-28 00:02:31,753 INFO L125 PetriNetUnfolderBase]: For 11057/11057 co-relation queries the response was YES. [2024-06-28 00:02:31,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2834 conditions, 510 events. 261/510 cut-off events. For 11057/11057 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2358 event pairs, 42 based on Foata normal form. 1/510 useless extension candidates. Maximal degree in co-relation 2776. Up to 398 conditions per place. [2024-06-28 00:02:31,758 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 84 selfloop transitions, 37 changer transitions 0/125 dead transitions. [2024-06-28 00:02:31,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 125 transitions, 1290 flow [2024-06-28 00:02:31,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:02:31,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:02:31,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 134 transitions. [2024-06-28 00:02:31,761 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41875 [2024-06-28 00:02:31,761 INFO L175 Difference]: Start difference. First operand has 127 places, 105 transitions, 881 flow. Second operand 10 states and 134 transitions. [2024-06-28 00:02:31,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 125 transitions, 1290 flow [2024-06-28 00:02:31,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 125 transitions, 1217 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-28 00:02:31,787 INFO L231 Difference]: Finished difference. Result has 131 places, 112 transitions, 981 flow [2024-06-28 00:02:31,787 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=811, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=981, PETRI_PLACES=131, PETRI_TRANSITIONS=112} [2024-06-28 00:02:31,788 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 100 predicate places. [2024-06-28 00:02:31,788 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 112 transitions, 981 flow [2024-06-28 00:02:31,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:31,789 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:31,789 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:31,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 00:02:31,789 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:02:31,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:31,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1105527510, now seen corresponding path program 3 times [2024-06-28 00:02:31,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:31,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630749269] [2024-06-28 00:02:31,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:31,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:31,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:33,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:33,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:33,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630749269] [2024-06-28 00:02:33,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630749269] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:33,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:33,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:02:33,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476756844] [2024-06-28 00:02:33,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:33,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:02:33,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:33,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:02:33,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:02:33,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 00:02:33,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 112 transitions, 981 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:33,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:33,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 00:02:33,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:34,076 INFO L124 PetriNetUnfolderBase]: 267/520 cut-off events. [2024-06-28 00:02:34,077 INFO L125 PetriNetUnfolderBase]: For 11877/11877 co-relation queries the response was YES. [2024-06-28 00:02:34,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2967 conditions, 520 events. 267/520 cut-off events. For 11877/11877 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2435 event pairs, 46 based on Foata normal form. 1/520 useless extension candidates. Maximal degree in co-relation 2907. Up to 404 conditions per place. [2024-06-28 00:02:34,081 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 87 selfloop transitions, 38 changer transitions 0/129 dead transitions. [2024-06-28 00:02:34,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 129 transitions, 1365 flow [2024-06-28 00:02:34,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:02:34,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:02:34,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 135 transitions. [2024-06-28 00:02:34,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421875 [2024-06-28 00:02:34,083 INFO L175 Difference]: Start difference. First operand has 131 places, 112 transitions, 981 flow. Second operand 10 states and 135 transitions. [2024-06-28 00:02:34,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 129 transitions, 1365 flow [2024-06-28 00:02:34,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 129 transitions, 1312 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-28 00:02:34,105 INFO L231 Difference]: Finished difference. Result has 138 places, 116 transitions, 1061 flow [2024-06-28 00:02:34,105 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=928, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1061, PETRI_PLACES=138, PETRI_TRANSITIONS=116} [2024-06-28 00:02:34,106 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 107 predicate places. [2024-06-28 00:02:34,106 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 116 transitions, 1061 flow [2024-06-28 00:02:34,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:34,106 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:34,106 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:34,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 00:02:34,106 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:02:34,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:34,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1111956600, now seen corresponding path program 4 times [2024-06-28 00:02:34,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:34,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922796562] [2024-06-28 00:02:34,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:34,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:34,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:35,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:35,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:35,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922796562] [2024-06-28 00:02:35,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922796562] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:35,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:35,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:02:35,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400239302] [2024-06-28 00:02:35,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:35,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:02:35,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:35,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:02:35,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:02:35,920 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 00:02:35,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 116 transitions, 1061 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:35,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:35,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 00:02:35,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:36,509 INFO L124 PetriNetUnfolderBase]: 270/525 cut-off events. [2024-06-28 00:02:36,510 INFO L125 PetriNetUnfolderBase]: For 12360/12360 co-relation queries the response was YES. [2024-06-28 00:02:36,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3036 conditions, 525 events. 270/525 cut-off events. For 12360/12360 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2462 event pairs, 44 based on Foata normal form. 1/525 useless extension candidates. Maximal degree in co-relation 2973. Up to 408 conditions per place. [2024-06-28 00:02:36,516 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 89 selfloop transitions, 39 changer transitions 0/132 dead transitions. [2024-06-28 00:02:36,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 132 transitions, 1454 flow [2024-06-28 00:02:36,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:02:36,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:02:36,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 136 transitions. [2024-06-28 00:02:36,518 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-28 00:02:36,519 INFO L175 Difference]: Start difference. First operand has 138 places, 116 transitions, 1061 flow. Second operand 10 states and 136 transitions. [2024-06-28 00:02:36,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 132 transitions, 1454 flow [2024-06-28 00:02:36,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 132 transitions, 1375 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-28 00:02:36,550 INFO L231 Difference]: Finished difference. Result has 143 places, 119 transitions, 1122 flow [2024-06-28 00:02:36,550 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=985, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1122, PETRI_PLACES=143, PETRI_TRANSITIONS=119} [2024-06-28 00:02:36,550 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 112 predicate places. [2024-06-28 00:02:36,551 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 119 transitions, 1122 flow [2024-06-28 00:02:36,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:36,551 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:36,551 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:36,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 00:02:36,551 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:02:36,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:36,552 INFO L85 PathProgramCache]: Analyzing trace with hash 649115448, now seen corresponding path program 4 times [2024-06-28 00:02:36,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:36,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89709790] [2024-06-28 00:02:36,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:36,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:36,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:37,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:37,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:37,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89709790] [2024-06-28 00:02:37,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89709790] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:37,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:37,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:02:37,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44874169] [2024-06-28 00:02:37,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:37,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:02:37,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:37,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:02:37,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:02:37,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:02:37,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 119 transitions, 1122 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) [2024-06-28 00:02:37,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:37,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:02:37,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:38,055 INFO L124 PetriNetUnfolderBase]: 255/524 cut-off events. [2024-06-28 00:02:38,055 INFO L125 PetriNetUnfolderBase]: For 13977/13977 co-relation queries the response was YES. [2024-06-28 00:02:38,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3059 conditions, 524 events. 255/524 cut-off events. For 13977/13977 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 2622 event pairs, 40 based on Foata normal form. 2/521 useless extension candidates. Maximal degree in co-relation 2994. Up to 399 conditions per place. [2024-06-28 00:02:38,064 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 105 selfloop transitions, 20 changer transitions 0/137 dead transitions. [2024-06-28 00:02:38,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 137 transitions, 1442 flow [2024-06-28 00:02:38,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:02:38,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:02:38,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 129 transitions. [2024-06-28 00:02:38,066 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4479166666666667 [2024-06-28 00:02:38,066 INFO L175 Difference]: Start difference. First operand has 143 places, 119 transitions, 1122 flow. Second operand 9 states and 129 transitions. [2024-06-28 00:02:38,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 137 transitions, 1442 flow [2024-06-28 00:02:38,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 137 transitions, 1361 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-28 00:02:38,090 INFO L231 Difference]: Finished difference. Result has 147 places, 121 transitions, 1119 flow [2024-06-28 00:02:38,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1041, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1119, PETRI_PLACES=147, PETRI_TRANSITIONS=121} [2024-06-28 00:02:38,091 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 116 predicate places. [2024-06-28 00:02:38,091 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 121 transitions, 1119 flow [2024-06-28 00:02:38,091 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) [2024-06-28 00:02:38,091 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:38,091 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:38,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 00:02:38,092 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:02:38,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:38,092 INFO L85 PathProgramCache]: Analyzing trace with hash -374698640, now seen corresponding path program 5 times [2024-06-28 00:02:38,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:38,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787250219] [2024-06-28 00:02:38,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:38,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:38,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:39,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:39,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:39,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787250219] [2024-06-28 00:02:39,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787250219] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:39,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:39,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:02:39,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766001871] [2024-06-28 00:02:39,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:39,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:02:39,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:39,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:02:39,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:02:39,356 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:02:39,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 121 transitions, 1119 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) [2024-06-28 00:02:39,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:39,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:02:39,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:39,724 INFO L124 PetriNetUnfolderBase]: 262/540 cut-off events. [2024-06-28 00:02:39,725 INFO L125 PetriNetUnfolderBase]: For 16196/16196 co-relation queries the response was YES. [2024-06-28 00:02:39,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3179 conditions, 540 events. 262/540 cut-off events. For 16196/16196 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2729 event pairs, 44 based on Foata normal form. 4/539 useless extension candidates. Maximal degree in co-relation 3113. Up to 415 conditions per place. [2024-06-28 00:02:39,730 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 102 selfloop transitions, 22 changer transitions 0/136 dead transitions. [2024-06-28 00:02:39,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 136 transitions, 1427 flow [2024-06-28 00:02:39,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:02:39,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:02:39,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 128 transitions. [2024-06-28 00:02:39,732 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-28 00:02:39,732 INFO L175 Difference]: Start difference. First operand has 147 places, 121 transitions, 1119 flow. Second operand 9 states and 128 transitions. [2024-06-28 00:02:39,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 136 transitions, 1427 flow [2024-06-28 00:02:39,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 136 transitions, 1359 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-28 00:02:39,760 INFO L231 Difference]: Finished difference. Result has 149 places, 122 transitions, 1126 flow [2024-06-28 00:02:39,761 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1051, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1126, PETRI_PLACES=149, PETRI_TRANSITIONS=122} [2024-06-28 00:02:39,761 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 118 predicate places. [2024-06-28 00:02:39,764 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 122 transitions, 1126 flow [2024-06-28 00:02:39,764 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) [2024-06-28 00:02:39,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:39,765 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:39,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 00:02:39,765 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:02:39,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:39,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1764622286, now seen corresponding path program 6 times [2024-06-28 00:02:39,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:39,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445974277] [2024-06-28 00:02:39,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:39,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:39,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:40,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:40,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:40,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445974277] [2024-06-28 00:02:40,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445974277] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:40,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:40,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:02:40,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162941109] [2024-06-28 00:02:40,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:40,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:02:40,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:40,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:02:40,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:02:40,779 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-06-28 00:02:40,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 122 transitions, 1126 flow. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:40,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:40,780 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-06-28 00:02:40,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:41,061 INFO L124 PetriNetUnfolderBase]: 242/533 cut-off events. [2024-06-28 00:02:41,061 INFO L125 PetriNetUnfolderBase]: For 15652/15655 co-relation queries the response was YES. [2024-06-28 00:02:41,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3047 conditions, 533 events. 242/533 cut-off events. For 15652/15655 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 2848 event pairs, 15 based on Foata normal form. 4/535 useless extension candidates. Maximal degree in co-relation 2981. Up to 300 conditions per place. [2024-06-28 00:02:41,068 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 80 selfloop transitions, 23 changer transitions 0/137 dead transitions. [2024-06-28 00:02:41,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 137 transitions, 1398 flow [2024-06-28 00:02:41,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:02:41,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:02:41,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 126 transitions. [2024-06-28 00:02:41,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4921875 [2024-06-28 00:02:41,070 INFO L175 Difference]: Start difference. First operand has 149 places, 122 transitions, 1126 flow. Second operand 8 states and 126 transitions. [2024-06-28 00:02:41,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 137 transitions, 1398 flow [2024-06-28 00:02:41,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 137 transitions, 1315 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-28 00:02:41,104 INFO L231 Difference]: Finished difference. Result has 149 places, 124 transitions, 1134 flow [2024-06-28 00:02:41,104 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1043, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1134, PETRI_PLACES=149, PETRI_TRANSITIONS=124} [2024-06-28 00:02:41,105 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 118 predicate places. [2024-06-28 00:02:41,105 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 124 transitions, 1134 flow [2024-06-28 00:02:41,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:41,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:41,105 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:41,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 00:02:41,106 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:02:41,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:41,106 INFO L85 PathProgramCache]: Analyzing trace with hash -374516050, now seen corresponding path program 5 times [2024-06-28 00:02:41,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:41,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737428030] [2024-06-28 00:02:41,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:41,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:41,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:42,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:42,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:42,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737428030] [2024-06-28 00:02:42,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737428030] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:42,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:42,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:02:42,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153117854] [2024-06-28 00:02:42,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:42,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:02:42,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:42,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:02:42,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:02:42,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 00:02:42,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 124 transitions, 1134 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:42,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:42,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 00:02:42,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:42,902 INFO L124 PetriNetUnfolderBase]: 302/595 cut-off events. [2024-06-28 00:02:42,902 INFO L125 PetriNetUnfolderBase]: For 15368/15368 co-relation queries the response was YES. [2024-06-28 00:02:42,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3344 conditions, 595 events. 302/595 cut-off events. For 15368/15368 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 2946 event pairs, 64 based on Foata normal form. 1/595 useless extension candidates. Maximal degree in co-relation 3278. Up to 512 conditions per place. [2024-06-28 00:02:42,907 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 110 selfloop transitions, 24 changer transitions 0/138 dead transitions. [2024-06-28 00:02:42,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 138 transitions, 1438 flow [2024-06-28 00:02:42,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:02:42,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:02:42,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-28 00:02:42,909 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.409375 [2024-06-28 00:02:42,909 INFO L175 Difference]: Start difference. First operand has 149 places, 124 transitions, 1134 flow. Second operand 10 states and 131 transitions. [2024-06-28 00:02:42,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 138 transitions, 1438 flow [2024-06-28 00:02:42,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 138 transitions, 1364 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-06-28 00:02:42,938 INFO L231 Difference]: Finished difference. Result has 154 places, 124 transitions, 1113 flow [2024-06-28 00:02:42,938 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1060, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1113, PETRI_PLACES=154, PETRI_TRANSITIONS=124} [2024-06-28 00:02:42,939 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 123 predicate places. [2024-06-28 00:02:42,939 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 124 transitions, 1113 flow [2024-06-28 00:02:42,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:42,939 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:42,939 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:42,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 00:02:42,939 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:02:42,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:42,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1105281432, now seen corresponding path program 1 times [2024-06-28 00:02:42,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:42,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480500561] [2024-06-28 00:02:42,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:42,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:42,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:44,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:44,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:44,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480500561] [2024-06-28 00:02:44,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480500561] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:44,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:44,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:02:44,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35913387] [2024-06-28 00:02:44,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:44,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:02:44,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:44,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:02:44,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:02:44,505 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:02:44,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 124 transitions, 1113 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) [2024-06-28 00:02:44,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:44,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:02:44,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:44,852 INFO L124 PetriNetUnfolderBase]: 305/600 cut-off events. [2024-06-28 00:02:44,852 INFO L125 PetriNetUnfolderBase]: For 14293/14293 co-relation queries the response was YES. [2024-06-28 00:02:44,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3293 conditions, 600 events. 305/600 cut-off events. For 14293/14293 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 2998 event pairs, 73 based on Foata normal form. 1/600 useless extension candidates. Maximal degree in co-relation 3227. Up to 516 conditions per place. [2024-06-28 00:02:44,857 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 108 selfloop transitions, 25 changer transitions 0/137 dead transitions. [2024-06-28 00:02:44,857 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 137 transitions, 1429 flow [2024-06-28 00:02:44,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:02:44,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:02:44,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 128 transitions. [2024-06-28 00:02:44,858 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-28 00:02:44,858 INFO L175 Difference]: Start difference. First operand has 154 places, 124 transitions, 1113 flow. Second operand 9 states and 128 transitions. [2024-06-28 00:02:44,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 137 transitions, 1429 flow [2024-06-28 00:02:44,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 137 transitions, 1310 flow, removed 7 selfloop flow, removed 13 redundant places. [2024-06-28 00:02:44,889 INFO L231 Difference]: Finished difference. Result has 150 places, 126 transitions, 1077 flow [2024-06-28 00:02:44,890 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=994, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1077, PETRI_PLACES=150, PETRI_TRANSITIONS=126} [2024-06-28 00:02:44,890 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 119 predicate places. [2024-06-28 00:02:44,890 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 126 transitions, 1077 flow [2024-06-28 00:02:44,890 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) [2024-06-28 00:02:44,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:44,891 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:44,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 00:02:44,891 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:02:44,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:44,891 INFO L85 PathProgramCache]: Analyzing trace with hash 565170548, now seen corresponding path program 7 times [2024-06-28 00:02:44,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:44,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844781771] [2024-06-28 00:02:44,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:44,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:44,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:46,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:46,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:46,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844781771] [2024-06-28 00:02:46,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844781771] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:46,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:46,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:02:46,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101212255] [2024-06-28 00:02:46,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:46,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:02:46,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:46,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:02:46,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:02:46,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:02:46,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 126 transitions, 1077 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) [2024-06-28 00:02:46,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:46,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:02:46,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:46,711 INFO L124 PetriNetUnfolderBase]: 274/567 cut-off events. [2024-06-28 00:02:46,711 INFO L125 PetriNetUnfolderBase]: For 14410/14410 co-relation queries the response was YES. [2024-06-28 00:02:46,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3113 conditions, 567 events. 274/567 cut-off events. For 14410/14410 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 2958 event pairs, 45 based on Foata normal form. 2/562 useless extension candidates. Maximal degree in co-relation 3050. Up to 446 conditions per place. [2024-06-28 00:02:46,715 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 105 selfloop transitions, 20 changer transitions 0/137 dead transitions. [2024-06-28 00:02:46,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 137 transitions, 1377 flow [2024-06-28 00:02:46,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:02:46,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:02:46,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 125 transitions. [2024-06-28 00:02:46,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4340277777777778 [2024-06-28 00:02:46,716 INFO L175 Difference]: Start difference. First operand has 150 places, 126 transitions, 1077 flow. Second operand 9 states and 125 transitions. [2024-06-28 00:02:46,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 137 transitions, 1377 flow [2024-06-28 00:02:46,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 137 transitions, 1310 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-28 00:02:46,744 INFO L231 Difference]: Finished difference. Result has 152 places, 127 transitions, 1080 flow [2024-06-28 00:02:46,745 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1010, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1080, PETRI_PLACES=152, PETRI_TRANSITIONS=127} [2024-06-28 00:02:46,745 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 121 predicate places. [2024-06-28 00:02:46,745 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 127 transitions, 1080 flow [2024-06-28 00:02:46,745 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) [2024-06-28 00:02:46,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:46,746 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:46,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 00:02:46,746 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:02:46,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:46,746 INFO L85 PathProgramCache]: Analyzing trace with hash 565052438, now seen corresponding path program 8 times [2024-06-28 00:02:46,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:46,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854983220] [2024-06-28 00:02:46,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:46,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:46,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:48,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:48,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:48,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854983220] [2024-06-28 00:02:48,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854983220] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:48,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:48,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:02:48,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989748002] [2024-06-28 00:02:48,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:48,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:02:48,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:48,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:02:48,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:02:48,109 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:02:48,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 127 transitions, 1080 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) [2024-06-28 00:02:48,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:48,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:02:48,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:48,431 INFO L124 PetriNetUnfolderBase]: 279/582 cut-off events. [2024-06-28 00:02:48,431 INFO L125 PetriNetUnfolderBase]: For 16773/16773 co-relation queries the response was YES. [2024-06-28 00:02:48,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3264 conditions, 582 events. 279/582 cut-off events. For 16773/16773 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3062 event pairs, 44 based on Foata normal form. 2/577 useless extension candidates. Maximal degree in co-relation 3199. Up to 452 conditions per place. [2024-06-28 00:02:48,436 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 109 selfloop transitions, 19 changer transitions 0/140 dead transitions. [2024-06-28 00:02:48,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 140 transitions, 1394 flow [2024-06-28 00:02:48,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:02:48,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:02:48,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 126 transitions. [2024-06-28 00:02:48,445 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-28 00:02:48,446 INFO L175 Difference]: Start difference. First operand has 152 places, 127 transitions, 1080 flow. Second operand 9 states and 126 transitions. [2024-06-28 00:02:48,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 140 transitions, 1394 flow [2024-06-28 00:02:48,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 140 transitions, 1313 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-28 00:02:48,487 INFO L231 Difference]: Finished difference. Result has 153 places, 128 transitions, 1069 flow [2024-06-28 00:02:48,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=999, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1069, PETRI_PLACES=153, PETRI_TRANSITIONS=128} [2024-06-28 00:02:48,487 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 122 predicate places. [2024-06-28 00:02:48,488 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 128 transitions, 1069 flow [2024-06-28 00:02:48,488 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) [2024-06-28 00:02:48,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:48,488 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:48,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 00:02:48,488 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:02:48,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:48,489 INFO L85 PathProgramCache]: Analyzing trace with hash 169256866, now seen corresponding path program 9 times [2024-06-28 00:02:48,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:48,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068322266] [2024-06-28 00:02:48,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:48,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:48,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:50,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:50,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:50,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068322266] [2024-06-28 00:02:50,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068322266] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:50,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:50,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:02:50,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292762236] [2024-06-28 00:02:50,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:50,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:02:50,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:50,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:02:50,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:02:50,403 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:02:50,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 128 transitions, 1069 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) [2024-06-28 00:02:50,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:50,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:02:50,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:50,892 INFO L124 PetriNetUnfolderBase]: 283/594 cut-off events. [2024-06-28 00:02:50,893 INFO L125 PetriNetUnfolderBase]: For 19089/19089 co-relation queries the response was YES. [2024-06-28 00:02:50,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3307 conditions, 594 events. 283/594 cut-off events. For 19089/19089 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3152 event pairs, 46 based on Foata normal form. 4/591 useless extension candidates. Maximal degree in co-relation 3243. Up to 458 conditions per place. [2024-06-28 00:02:50,898 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 102 selfloop transitions, 24 changer transitions 0/138 dead transitions. [2024-06-28 00:02:50,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 138 transitions, 1371 flow [2024-06-28 00:02:50,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:02:50,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:02:50,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 126 transitions. [2024-06-28 00:02:50,900 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-28 00:02:50,900 INFO L175 Difference]: Start difference. First operand has 153 places, 128 transitions, 1069 flow. Second operand 9 states and 126 transitions. [2024-06-28 00:02:50,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 138 transitions, 1371 flow [2024-06-28 00:02:50,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 138 transitions, 1309 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-28 00:02:50,937 INFO L231 Difference]: Finished difference. Result has 155 places, 129 transitions, 1089 flow [2024-06-28 00:02:50,937 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1007, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1089, PETRI_PLACES=155, PETRI_TRANSITIONS=129} [2024-06-28 00:02:50,937 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 124 predicate places. [2024-06-28 00:02:50,938 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 129 transitions, 1089 flow [2024-06-28 00:02:50,938 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) [2024-06-28 00:02:50,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:50,938 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:50,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 00:02:50,938 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:02:50,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:50,939 INFO L85 PathProgramCache]: Analyzing trace with hash -111668478, now seen corresponding path program 6 times [2024-06-28 00:02:50,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:50,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522684535] [2024-06-28 00:02:50,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:50,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:50,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:52,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:52,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:52,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522684535] [2024-06-28 00:02:52,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522684535] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:52,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:52,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:02:52,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895610296] [2024-06-28 00:02:52,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:52,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:02:52,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:52,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:02:52,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:02:52,556 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 00:02:52,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 129 transitions, 1089 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:52,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:52,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 00:02:52,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:52,854 INFO L124 PetriNetUnfolderBase]: 332/651 cut-off events. [2024-06-28 00:02:52,854 INFO L125 PetriNetUnfolderBase]: For 17884/17884 co-relation queries the response was YES. [2024-06-28 00:02:52,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3573 conditions, 651 events. 332/651 cut-off events. For 17884/17884 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3317 event pairs, 56 based on Foata normal form. 1/647 useless extension candidates. Maximal degree in co-relation 3509. Up to 570 conditions per place. [2024-06-28 00:02:52,860 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 116 selfloop transitions, 23 changer transitions 0/143 dead transitions. [2024-06-28 00:02:52,860 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 143 transitions, 1441 flow [2024-06-28 00:02:52,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:02:52,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:02:52,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-28 00:02:52,865 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-28 00:02:52,866 INFO L175 Difference]: Start difference. First operand has 155 places, 129 transitions, 1089 flow. Second operand 10 states and 128 transitions. [2024-06-28 00:02:52,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 143 transitions, 1441 flow [2024-06-28 00:02:52,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 143 transitions, 1367 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-28 00:02:52,913 INFO L231 Difference]: Finished difference. Result has 159 places, 133 transitions, 1123 flow [2024-06-28 00:02:52,914 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1017, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1123, PETRI_PLACES=159, PETRI_TRANSITIONS=133} [2024-06-28 00:02:52,914 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 128 predicate places. [2024-06-28 00:02:52,914 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 133 transitions, 1123 flow [2024-06-28 00:02:52,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:52,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:52,915 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:52,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 00:02:52,915 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:02:52,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:52,916 INFO L85 PathProgramCache]: Analyzing trace with hash 175690916, now seen corresponding path program 7 times [2024-06-28 00:02:52,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:52,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848328488] [2024-06-28 00:02:52,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:52,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:52,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:54,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:54,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:54,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848328488] [2024-06-28 00:02:54,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848328488] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:54,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:54,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:02:54,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144615912] [2024-06-28 00:02:54,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:54,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:02:54,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:54,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:02:54,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:02:54,572 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 00:02:54,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 133 transitions, 1123 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:54,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:54,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 00:02:54,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:54,994 INFO L124 PetriNetUnfolderBase]: 348/681 cut-off events. [2024-06-28 00:02:54,994 INFO L125 PetriNetUnfolderBase]: For 20345/20345 co-relation queries the response was YES. [2024-06-28 00:02:54,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3878 conditions, 681 events. 348/681 cut-off events. For 20345/20345 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3534 event pairs, 58 based on Foata normal form. 1/677 useless extension candidates. Maximal degree in co-relation 3812. Up to 567 conditions per place. [2024-06-28 00:02:55,002 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 114 selfloop transitions, 36 changer transitions 0/154 dead transitions. [2024-06-28 00:02:55,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 154 transitions, 1731 flow [2024-06-28 00:02:55,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:02:55,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:02:55,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 126 transitions. [2024-06-28 00:02:55,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-28 00:02:55,005 INFO L175 Difference]: Start difference. First operand has 159 places, 133 transitions, 1123 flow. Second operand 9 states and 126 transitions. [2024-06-28 00:02:55,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 154 transitions, 1731 flow [2024-06-28 00:02:55,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 154 transitions, 1656 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-28 00:02:55,060 INFO L231 Difference]: Finished difference. Result has 163 places, 143 transitions, 1276 flow [2024-06-28 00:02:55,060 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1048, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1276, PETRI_PLACES=163, PETRI_TRANSITIONS=143} [2024-06-28 00:02:55,062 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 132 predicate places. [2024-06-28 00:02:55,062 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 143 transitions, 1276 flow [2024-06-28 00:02:55,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:55,062 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:55,062 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:55,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 00:02:55,063 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:02:55,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:55,063 INFO L85 PathProgramCache]: Analyzing trace with hash -375234112, now seen corresponding path program 8 times [2024-06-28 00:02:55,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:55,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838769247] [2024-06-28 00:02:55,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:55,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:55,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:56,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:56,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:56,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838769247] [2024-06-28 00:02:56,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838769247] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:56,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:56,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:02:56,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611372284] [2024-06-28 00:02:56,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:56,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:02:56,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:56,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:02:56,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:02:56,681 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 00:02:56,681 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 143 transitions, 1276 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:56,681 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:56,681 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 00:02:56,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:57,066 INFO L124 PetriNetUnfolderBase]: 346/678 cut-off events. [2024-06-28 00:02:57,067 INFO L125 PetriNetUnfolderBase]: For 20926/20926 co-relation queries the response was YES. [2024-06-28 00:02:57,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3934 conditions, 678 events. 346/678 cut-off events. For 20926/20926 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3517 event pairs, 58 based on Foata normal form. 1/674 useless extension candidates. Maximal degree in co-relation 3865. Up to 565 conditions per place. [2024-06-28 00:02:57,073 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 111 selfloop transitions, 38 changer transitions 0/153 dead transitions. [2024-06-28 00:02:57,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 153 transitions, 1676 flow [2024-06-28 00:02:57,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:02:57,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:02:57,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 132 transitions. [2024-06-28 00:02:57,081 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4125 [2024-06-28 00:02:57,081 INFO L175 Difference]: Start difference. First operand has 163 places, 143 transitions, 1276 flow. Second operand 10 states and 132 transitions. [2024-06-28 00:02:57,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 153 transitions, 1676 flow [2024-06-28 00:02:57,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 153 transitions, 1583 flow, removed 36 selfloop flow, removed 3 redundant places. [2024-06-28 00:02:57,134 INFO L231 Difference]: Finished difference. Result has 170 places, 143 transitions, 1264 flow [2024-06-28 00:02:57,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1183, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1264, PETRI_PLACES=170, PETRI_TRANSITIONS=143} [2024-06-28 00:02:57,136 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 139 predicate places. [2024-06-28 00:02:57,137 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 143 transitions, 1264 flow [2024-06-28 00:02:57,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:57,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:57,139 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:57,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 00:02:57,142 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:02:57,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:57,143 INFO L85 PathProgramCache]: Analyzing trace with hash 169261826, now seen corresponding path program 9 times [2024-06-28 00:02:57,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:57,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648445080] [2024-06-28 00:02:57,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:57,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:57,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:58,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:58,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:58,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648445080] [2024-06-28 00:02:58,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648445080] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:58,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:58,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:02:58,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000134837] [2024-06-28 00:02:58,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:58,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:02:58,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:58,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:02:58,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:02:58,828 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 00:02:58,828 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 143 transitions, 1264 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:58,828 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:58,828 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 00:02:58,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:59,369 INFO L124 PetriNetUnfolderBase]: 344/675 cut-off events. [2024-06-28 00:02:59,370 INFO L125 PetriNetUnfolderBase]: For 20405/20405 co-relation queries the response was YES. [2024-06-28 00:02:59,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3811 conditions, 675 events. 344/675 cut-off events. For 20405/20405 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3495 event pairs, 56 based on Foata normal form. 1/671 useless extension candidates. Maximal degree in co-relation 3740. Up to 563 conditions per place. [2024-06-28 00:02:59,374 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 113 selfloop transitions, 35 changer transitions 0/152 dead transitions. [2024-06-28 00:02:59,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 152 transitions, 1582 flow [2024-06-28 00:02:59,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:02:59,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:02:59,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 133 transitions. [2024-06-28 00:02:59,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.415625 [2024-06-28 00:02:59,375 INFO L175 Difference]: Start difference. First operand has 170 places, 143 transitions, 1264 flow. Second operand 10 states and 133 transitions. [2024-06-28 00:02:59,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 152 transitions, 1582 flow [2024-06-28 00:02:59,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 152 transitions, 1511 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-28 00:02:59,411 INFO L231 Difference]: Finished difference. Result has 174 places, 143 transitions, 1268 flow [2024-06-28 00:02:59,411 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1193, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1268, PETRI_PLACES=174, PETRI_TRANSITIONS=143} [2024-06-28 00:02:59,411 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 143 predicate places. [2024-06-28 00:02:59,411 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 143 transitions, 1268 flow [2024-06-28 00:02:59,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:59,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:59,412 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:59,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 00:02:59,412 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:02:59,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:59,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1724370572, now seen corresponding path program 10 times [2024-06-28 00:02:59,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:59,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144654558] [2024-06-28 00:02:59,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:59,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:59,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:01,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:01,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:01,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144654558] [2024-06-28 00:03:01,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144654558] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:01,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:01,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:03:01,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674532829] [2024-06-28 00:03:01,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:01,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:03:01,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:01,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:03:01,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:03:01,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:03:01,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 143 transitions, 1268 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) [2024-06-28 00:03:01,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:01,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:03:01,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:01,543 INFO L124 PetriNetUnfolderBase]: 297/618 cut-off events. [2024-06-28 00:03:01,544 INFO L125 PetriNetUnfolderBase]: For 20428/20428 co-relation queries the response was YES. [2024-06-28 00:03:01,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3408 conditions, 618 events. 297/618 cut-off events. For 20428/20428 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3335 event pairs, 48 based on Foata normal form. 4/612 useless extension candidates. Maximal degree in co-relation 3336. Up to 444 conditions per place. [2024-06-28 00:03:01,548 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 90 selfloop transitions, 47 changer transitions 0/151 dead transitions. [2024-06-28 00:03:01,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 151 transitions, 1560 flow [2024-06-28 00:03:01,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:03:01,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:03:01,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 125 transitions. [2024-06-28 00:03:01,549 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4340277777777778 [2024-06-28 00:03:01,549 INFO L175 Difference]: Start difference. First operand has 174 places, 143 transitions, 1268 flow. Second operand 9 states and 125 transitions. [2024-06-28 00:03:01,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 151 transitions, 1560 flow [2024-06-28 00:03:01,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 151 transitions, 1456 flow, removed 7 selfloop flow, removed 11 redundant places. [2024-06-28 00:03:01,586 INFO L231 Difference]: Finished difference. Result has 172 places, 143 transitions, 1262 flow [2024-06-28 00:03:01,586 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1164, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1262, PETRI_PLACES=172, PETRI_TRANSITIONS=143} [2024-06-28 00:03:01,586 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 141 predicate places. [2024-06-28 00:03:01,586 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 143 transitions, 1262 flow [2024-06-28 00:03:01,586 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) [2024-06-28 00:03:01,586 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:01,587 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:01,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 00:03:01,587 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:03:01,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:01,587 INFO L85 PathProgramCache]: Analyzing trace with hash -2071018284, now seen corresponding path program 10 times [2024-06-28 00:03:01,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:01,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045474961] [2024-06-28 00:03:01,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:01,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:01,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:03,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:03,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:03,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045474961] [2024-06-28 00:03:03,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045474961] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:03,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:03,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:03:03,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365848927] [2024-06-28 00:03:03,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:03,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:03:03,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:03,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:03:03,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:03:03,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 00:03:03,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 143 transitions, 1262 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:03,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:03,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 00:03:03,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:03,827 INFO L124 PetriNetUnfolderBase]: 341/670 cut-off events. [2024-06-28 00:03:03,828 INFO L125 PetriNetUnfolderBase]: For 18945/18945 co-relation queries the response was YES. [2024-06-28 00:03:03,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3665 conditions, 670 events. 341/670 cut-off events. For 18945/18945 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3505 event pairs, 64 based on Foata normal form. 1/665 useless extension candidates. Maximal degree in co-relation 3595. Up to 465 conditions per place. [2024-06-28 00:03:03,832 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 72 selfloop transitions, 82 changer transitions 0/158 dead transitions. [2024-06-28 00:03:03,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 158 transitions, 1767 flow [2024-06-28 00:03:03,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:03:03,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:03:03,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 133 transitions. [2024-06-28 00:03:03,833 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.415625 [2024-06-28 00:03:03,834 INFO L175 Difference]: Start difference. First operand has 172 places, 143 transitions, 1262 flow. Second operand 10 states and 133 transitions. [2024-06-28 00:03:03,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 158 transitions, 1767 flow [2024-06-28 00:03:03,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 158 transitions, 1646 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-28 00:03:03,870 INFO L231 Difference]: Finished difference. Result has 176 places, 149 transitions, 1431 flow [2024-06-28 00:03:03,871 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1142, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1431, PETRI_PLACES=176, PETRI_TRANSITIONS=149} [2024-06-28 00:03:03,871 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 145 predicate places. [2024-06-28 00:03:03,871 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 149 transitions, 1431 flow [2024-06-28 00:03:03,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:03,871 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:03,872 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:03,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 00:03:03,872 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:03:03,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:03,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1496054332, now seen corresponding path program 11 times [2024-06-28 00:03:03,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:03,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750820728] [2024-06-28 00:03:03,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:03,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:03,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:05,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:05,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:05,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750820728] [2024-06-28 00:03:05,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750820728] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:05,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:05,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:03:05,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962307298] [2024-06-28 00:03:05,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:05,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:03:05,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:05,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:03:05,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:03:05,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 00:03:05,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 149 transitions, 1431 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:05,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:05,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 00:03:05,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:05,881 INFO L124 PetriNetUnfolderBase]: 352/690 cut-off events. [2024-06-28 00:03:05,881 INFO L125 PetriNetUnfolderBase]: For 20865/20865 co-relation queries the response was YES. [2024-06-28 00:03:05,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3981 conditions, 690 events. 352/690 cut-off events. For 20865/20865 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 3634 event pairs, 64 based on Foata normal form. 1/685 useless extension candidates. Maximal degree in co-relation 3909. Up to 477 conditions per place. [2024-06-28 00:03:05,887 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 84 selfloop transitions, 77 changer transitions 0/165 dead transitions. [2024-06-28 00:03:05,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 165 transitions, 2045 flow [2024-06-28 00:03:05,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:03:05,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:03:05,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 136 transitions. [2024-06-28 00:03:05,888 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-28 00:03:05,888 INFO L175 Difference]: Start difference. First operand has 176 places, 149 transitions, 1431 flow. Second operand 10 states and 136 transitions. [2024-06-28 00:03:05,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 165 transitions, 2045 flow [2024-06-28 00:03:05,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 165 transitions, 1975 flow, removed 24 selfloop flow, removed 4 redundant places. [2024-06-28 00:03:05,925 INFO L231 Difference]: Finished difference. Result has 183 places, 155 transitions, 1628 flow [2024-06-28 00:03:05,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1361, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1628, PETRI_PLACES=183, PETRI_TRANSITIONS=155} [2024-06-28 00:03:05,925 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 152 predicate places. [2024-06-28 00:03:05,925 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 155 transitions, 1628 flow [2024-06-28 00:03:05,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:05,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:05,926 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:05,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 00:03:05,926 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:03:05,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:05,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1724192632, now seen corresponding path program 12 times [2024-06-28 00:03:05,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:05,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126969772] [2024-06-28 00:03:05,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:05,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:05,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:07,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:07,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:07,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126969772] [2024-06-28 00:03:07,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126969772] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:07,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:07,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:03:07,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459116946] [2024-06-28 00:03:07,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:07,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:03:07,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:07,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:03:07,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:03:07,574 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 00:03:07,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 155 transitions, 1628 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:07,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:07,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 00:03:07,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:08,076 INFO L124 PetriNetUnfolderBase]: 363/710 cut-off events. [2024-06-28 00:03:08,076 INFO L125 PetriNetUnfolderBase]: For 22592/22592 co-relation queries the response was YES. [2024-06-28 00:03:08,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4181 conditions, 710 events. 363/710 cut-off events. For 22592/22592 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 3770 event pairs, 64 based on Foata normal form. 1/705 useless extension candidates. Maximal degree in co-relation 4106. Up to 489 conditions per place. [2024-06-28 00:03:08,081 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 93 selfloop transitions, 75 changer transitions 0/172 dead transitions. [2024-06-28 00:03:08,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 172 transitions, 2362 flow [2024-06-28 00:03:08,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:03:08,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:03:08,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 139 transitions. [2024-06-28 00:03:08,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.434375 [2024-06-28 00:03:08,083 INFO L175 Difference]: Start difference. First operand has 183 places, 155 transitions, 1628 flow. Second operand 10 states and 139 transitions. [2024-06-28 00:03:08,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 172 transitions, 2362 flow [2024-06-28 00:03:08,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 172 transitions, 2222 flow, removed 21 selfloop flow, removed 5 redundant places. [2024-06-28 00:03:08,131 INFO L231 Difference]: Finished difference. Result has 189 places, 161 transitions, 1761 flow [2024-06-28 00:03:08,132 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1493, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1761, PETRI_PLACES=189, PETRI_TRANSITIONS=161} [2024-06-28 00:03:08,132 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 158 predicate places. [2024-06-28 00:03:08,132 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 161 transitions, 1761 flow [2024-06-28 00:03:08,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:08,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:08,134 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:08,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 00:03:08,138 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:03:08,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:08,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1717699372, now seen corresponding path program 13 times [2024-06-28 00:03:08,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:08,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241300536] [2024-06-28 00:03:08,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:08,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:08,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:09,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:09,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:09,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241300536] [2024-06-28 00:03:09,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241300536] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:09,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:09,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:03:09,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147321582] [2024-06-28 00:03:09,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:09,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:03:09,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:09,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:03:09,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:03:09,877 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 00:03:09,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 161 transitions, 1761 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:09,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:09,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 00:03:09,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:10,246 INFO L124 PetriNetUnfolderBase]: 361/707 cut-off events. [2024-06-28 00:03:10,246 INFO L125 PetriNetUnfolderBase]: For 22553/22553 co-relation queries the response was YES. [2024-06-28 00:03:10,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4115 conditions, 707 events. 361/707 cut-off events. For 22553/22553 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 3746 event pairs, 60 based on Foata normal form. 1/702 useless extension candidates. Maximal degree in co-relation 4038. Up to 487 conditions per place. [2024-06-28 00:03:10,253 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 91 selfloop transitions, 76 changer transitions 0/171 dead transitions. [2024-06-28 00:03:10,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 171 transitions, 2297 flow [2024-06-28 00:03:10,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:03:10,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:03:10,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 137 transitions. [2024-06-28 00:03:10,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.428125 [2024-06-28 00:03:10,254 INFO L175 Difference]: Start difference. First operand has 189 places, 161 transitions, 1761 flow. Second operand 10 states and 137 transitions. [2024-06-28 00:03:10,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 171 transitions, 2297 flow [2024-06-28 00:03:10,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 171 transitions, 1979 flow, removed 41 selfloop flow, removed 11 redundant places. [2024-06-28 00:03:10,302 INFO L231 Difference]: Finished difference. Result has 188 places, 161 transitions, 1600 flow [2024-06-28 00:03:10,303 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1443, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1600, PETRI_PLACES=188, PETRI_TRANSITIONS=161} [2024-06-28 00:03:10,303 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 157 predicate places. [2024-06-28 00:03:10,303 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 161 transitions, 1600 flow [2024-06-28 00:03:10,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:10,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:10,303 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:10,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 00:03:10,304 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:03:10,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:10,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1724365612, now seen corresponding path program 14 times [2024-06-28 00:03:10,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:10,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91115419] [2024-06-28 00:03:10,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:10,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:10,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:12,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:12,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:12,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91115419] [2024-06-28 00:03:12,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91115419] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:12,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:12,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:03:12,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13426213] [2024-06-28 00:03:12,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:12,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:03:12,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:12,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:03:12,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:03:12,173 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 00:03:12,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 161 transitions, 1600 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:12,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:12,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 00:03:12,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:12,689 INFO L124 PetriNetUnfolderBase]: 359/704 cut-off events. [2024-06-28 00:03:12,689 INFO L125 PetriNetUnfolderBase]: For 21819/21819 co-relation queries the response was YES. [2024-06-28 00:03:12,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3849 conditions, 704 events. 359/704 cut-off events. For 21819/21819 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 3719 event pairs, 64 based on Foata normal form. 1/699 useless extension candidates. Maximal degree in co-relation 3776. Up to 485 conditions per place. [2024-06-28 00:03:12,694 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 88 selfloop transitions, 78 changer transitions 0/170 dead transitions. [2024-06-28 00:03:12,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 170 transitions, 2044 flow [2024-06-28 00:03:12,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:03:12,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:03:12,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 135 transitions. [2024-06-28 00:03:12,696 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421875 [2024-06-28 00:03:12,696 INFO L175 Difference]: Start difference. First operand has 188 places, 161 transitions, 1600 flow. Second operand 10 states and 135 transitions. [2024-06-28 00:03:12,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 170 transitions, 2044 flow [2024-06-28 00:03:12,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 170 transitions, 1826 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-28 00:03:12,755 INFO L231 Difference]: Finished difference. Result has 190 places, 161 transitions, 1543 flow [2024-06-28 00:03:12,756 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1382, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1543, PETRI_PLACES=190, PETRI_TRANSITIONS=161} [2024-06-28 00:03:12,756 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 159 predicate places. [2024-06-28 00:03:12,756 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 161 transitions, 1543 flow [2024-06-28 00:03:12,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:12,757 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:12,757 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:12,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 00:03:12,757 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:03:12,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:12,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1938611992, now seen corresponding path program 15 times [2024-06-28 00:03:12,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:12,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833901546] [2024-06-28 00:03:12,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:12,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:12,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:14,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:14,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:14,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833901546] [2024-06-28 00:03:14,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833901546] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:14,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:14,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:03:14,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072618206] [2024-06-28 00:03:14,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:14,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:03:14,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:14,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:03:14,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:03:14,393 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 00:03:14,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 161 transitions, 1543 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:14,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:14,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 00:03:14,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:14,837 INFO L124 PetriNetUnfolderBase]: 357/701 cut-off events. [2024-06-28 00:03:14,838 INFO L125 PetriNetUnfolderBase]: For 21401/21401 co-relation queries the response was YES. [2024-06-28 00:03:14,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3747 conditions, 701 events. 357/701 cut-off events. For 21401/21401 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 3708 event pairs, 58 based on Foata normal form. 1/696 useless extension candidates. Maximal degree in co-relation 3674. Up to 483 conditions per place. [2024-06-28 00:03:14,842 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 82 selfloop transitions, 83 changer transitions 0/169 dead transitions. [2024-06-28 00:03:14,842 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 169 transitions, 1891 flow [2024-06-28 00:03:14,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:03:14,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:03:14,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 133 transitions. [2024-06-28 00:03:14,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.415625 [2024-06-28 00:03:14,844 INFO L175 Difference]: Start difference. First operand has 190 places, 161 transitions, 1543 flow. Second operand 10 states and 133 transitions. [2024-06-28 00:03:14,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 169 transitions, 1891 flow [2024-06-28 00:03:14,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 169 transitions, 1706 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-28 00:03:14,898 INFO L231 Difference]: Finished difference. Result has 191 places, 161 transitions, 1529 flow [2024-06-28 00:03:14,898 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1358, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1529, PETRI_PLACES=191, PETRI_TRANSITIONS=161} [2024-06-28 00:03:14,898 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 160 predicate places. [2024-06-28 00:03:14,898 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 161 transitions, 1529 flow [2024-06-28 00:03:14,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:14,899 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:14,899 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:14,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 00:03:14,899 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:03:14,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:14,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1717690444, now seen corresponding path program 2 times [2024-06-28 00:03:14,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:14,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376605698] [2024-06-28 00:03:14,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:14,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:14,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:16,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:16,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:16,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376605698] [2024-06-28 00:03:16,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376605698] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:16,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:16,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:03:16,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005969918] [2024-06-28 00:03:16,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:16,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:03:16,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:16,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:03:16,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:03:16,407 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:03:16,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 161 transitions, 1529 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) [2024-06-28 00:03:16,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:16,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:03:16,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:16,644 INFO L124 PetriNetUnfolderBase]: 360/708 cut-off events. [2024-06-28 00:03:16,645 INFO L125 PetriNetUnfolderBase]: For 22236/22236 co-relation queries the response was YES. [2024-06-28 00:03:16,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3780 conditions, 708 events. 360/708 cut-off events. For 22236/22236 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 3762 event pairs, 70 based on Foata normal form. 1/706 useless extension candidates. Maximal degree in co-relation 3707. Up to 574 conditions per place. [2024-06-28 00:03:16,649 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 129 selfloop transitions, 39 changer transitions 0/172 dead transitions. [2024-06-28 00:03:16,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 172 transitions, 1913 flow [2024-06-28 00:03:16,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:03:16,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:03:16,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 133 transitions. [2024-06-28 00:03:16,650 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4618055555555556 [2024-06-28 00:03:16,651 INFO L175 Difference]: Start difference. First operand has 191 places, 161 transitions, 1529 flow. Second operand 9 states and 133 transitions. [2024-06-28 00:03:16,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 172 transitions, 1913 flow [2024-06-28 00:03:16,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 172 transitions, 1753 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-28 00:03:16,707 INFO L231 Difference]: Finished difference. Result has 192 places, 163 transitions, 1484 flow [2024-06-28 00:03:16,707 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1369, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1484, PETRI_PLACES=192, PETRI_TRANSITIONS=163} [2024-06-28 00:03:16,707 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 161 predicate places. [2024-06-28 00:03:16,707 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 163 transitions, 1484 flow [2024-06-28 00:03:16,707 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) [2024-06-28 00:03:16,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:16,708 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:16,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 00:03:16,708 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:03:16,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:16,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1938858070, now seen corresponding path program 3 times [2024-06-28 00:03:16,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:16,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214535703] [2024-06-28 00:03:16,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:16,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:16,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:18,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:18,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:18,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214535703] [2024-06-28 00:03:18,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214535703] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:18,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:18,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:03:18,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995974067] [2024-06-28 00:03:18,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:18,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:03:18,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:18,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:03:18,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:03:18,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:03:18,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 163 transitions, 1484 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) [2024-06-28 00:03:18,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:18,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:03:18,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:18,571 INFO L124 PetriNetUnfolderBase]: 363/713 cut-off events. [2024-06-28 00:03:18,571 INFO L125 PetriNetUnfolderBase]: For 23030/23030 co-relation queries the response was YES. [2024-06-28 00:03:18,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3780 conditions, 713 events. 363/713 cut-off events. For 23030/23030 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 3782 event pairs, 76 based on Foata normal form. 1/711 useless extension candidates. Maximal degree in co-relation 3707. Up to 579 conditions per place. [2024-06-28 00:03:18,576 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 129 selfloop transitions, 41 changer transitions 0/174 dead transitions. [2024-06-28 00:03:18,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 174 transitions, 1876 flow [2024-06-28 00:03:18,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:03:18,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:03:18,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 132 transitions. [2024-06-28 00:03:18,577 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-28 00:03:18,577 INFO L175 Difference]: Start difference. First operand has 192 places, 163 transitions, 1484 flow. Second operand 9 states and 132 transitions. [2024-06-28 00:03:18,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 174 transitions, 1876 flow [2024-06-28 00:03:18,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 174 transitions, 1777 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-28 00:03:18,646 INFO L231 Difference]: Finished difference. Result has 194 places, 165 transitions, 1508 flow [2024-06-28 00:03:18,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1385, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1508, PETRI_PLACES=194, PETRI_TRANSITIONS=165} [2024-06-28 00:03:18,646 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 163 predicate places. [2024-06-28 00:03:18,646 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 165 transitions, 1508 flow [2024-06-28 00:03:18,646 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) [2024-06-28 00:03:18,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:18,647 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:18,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 00:03:18,647 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:03:18,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:18,647 INFO L85 PathProgramCache]: Analyzing trace with hash -2071009356, now seen corresponding path program 4 times [2024-06-28 00:03:18,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:18,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006623903] [2024-06-28 00:03:18,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:18,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:18,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:20,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:20,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:20,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006623903] [2024-06-28 00:03:20,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006623903] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:20,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:20,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:03:20,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971525837] [2024-06-28 00:03:20,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:20,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:03:20,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:20,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:03:20,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:03:20,213 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:03:20,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 165 transitions, 1508 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) [2024-06-28 00:03:20,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:20,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:03:20,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:20,480 INFO L124 PetriNetUnfolderBase]: 366/718 cut-off events. [2024-06-28 00:03:20,481 INFO L125 PetriNetUnfolderBase]: For 23897/23897 co-relation queries the response was YES. [2024-06-28 00:03:20,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3847 conditions, 718 events. 366/718 cut-off events. For 23897/23897 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 3836 event pairs, 76 based on Foata normal form. 1/716 useless extension candidates. Maximal degree in co-relation 3773. Up to 584 conditions per place. [2024-06-28 00:03:20,485 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 128 selfloop transitions, 44 changer transitions 0/176 dead transitions. [2024-06-28 00:03:20,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 176 transitions, 1908 flow [2024-06-28 00:03:20,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:03:20,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:03:20,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 131 transitions. [2024-06-28 00:03:20,486 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4548611111111111 [2024-06-28 00:03:20,486 INFO L175 Difference]: Start difference. First operand has 194 places, 165 transitions, 1508 flow. Second operand 9 states and 131 transitions. [2024-06-28 00:03:20,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 176 transitions, 1908 flow [2024-06-28 00:03:20,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 176 transitions, 1801 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-28 00:03:20,549 INFO L231 Difference]: Finished difference. Result has 196 places, 167 transitions, 1534 flow [2024-06-28 00:03:20,550 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1401, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1534, PETRI_PLACES=196, PETRI_TRANSITIONS=167} [2024-06-28 00:03:20,550 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 165 predicate places. [2024-06-28 00:03:20,550 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 167 transitions, 1534 flow [2024-06-28 00:03:20,550 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) [2024-06-28 00:03:20,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:20,550 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:20,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 00:03:20,550 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:03:20,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:20,551 INFO L85 PathProgramCache]: Analyzing trace with hash -2060890026, now seen corresponding path program 5 times [2024-06-28 00:03:20,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:20,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219054146] [2024-06-28 00:03:20,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:20,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:20,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:22,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:22,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:22,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219054146] [2024-06-28 00:03:22,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219054146] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:22,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:22,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:03:22,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923743762] [2024-06-28 00:03:22,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:22,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:03:22,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:22,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:03:22,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:03:22,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 00:03:22,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 167 transitions, 1534 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:22,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:22,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 00:03:22,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:22,683 INFO L124 PetriNetUnfolderBase]: 369/726 cut-off events. [2024-06-28 00:03:22,683 INFO L125 PetriNetUnfolderBase]: For 24843/24843 co-relation queries the response was YES. [2024-06-28 00:03:22,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3919 conditions, 726 events. 369/726 cut-off events. For 24843/24843 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 3860 event pairs, 121 based on Foata normal form. 1/726 useless extension candidates. Maximal degree in co-relation 3844. Up to 650 conditions per place. [2024-06-28 00:03:22,688 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 156 selfloop transitions, 18 changer transitions 0/178 dead transitions. [2024-06-28 00:03:22,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 178 transitions, 1942 flow [2024-06-28 00:03:22,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:03:22,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:03:22,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-28 00:03:22,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-28 00:03:22,689 INFO L175 Difference]: Start difference. First operand has 196 places, 167 transitions, 1534 flow. Second operand 10 states and 125 transitions. [2024-06-28 00:03:22,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 178 transitions, 1942 flow [2024-06-28 00:03:22,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 178 transitions, 1825 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-28 00:03:22,763 INFO L231 Difference]: Finished difference. Result has 199 places, 169 transitions, 1502 flow [2024-06-28 00:03:22,763 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1417, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1502, PETRI_PLACES=199, PETRI_TRANSITIONS=169} [2024-06-28 00:03:22,764 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 168 predicate places. [2024-06-28 00:03:22,764 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 169 transitions, 1502 flow [2024-06-28 00:03:22,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:22,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:22,764 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:22,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 00:03:22,765 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:03:22,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:22,765 INFO L85 PathProgramCache]: Analyzing trace with hash -2060533836, now seen corresponding path program 6 times [2024-06-28 00:03:22,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:22,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156546205] [2024-06-28 00:03:22,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:22,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:22,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:24,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:24,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:24,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156546205] [2024-06-28 00:03:24,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156546205] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:24,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:24,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:03:24,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673746079] [2024-06-28 00:03:24,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:24,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:03:24,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:24,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:03:24,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:03:24,780 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 00:03:24,780 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 169 transitions, 1502 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:24,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:24,780 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 00:03:24,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:25,111 INFO L124 PetriNetUnfolderBase]: 367/723 cut-off events. [2024-06-28 00:03:25,112 INFO L125 PetriNetUnfolderBase]: For 24247/24247 co-relation queries the response was YES. [2024-06-28 00:03:25,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3799 conditions, 723 events. 367/723 cut-off events. For 24247/24247 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 3869 event pairs, 121 based on Foata normal form. 1/723 useless extension candidates. Maximal degree in co-relation 3722. Up to 641 conditions per place. [2024-06-28 00:03:25,117 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 155 selfloop transitions, 22 changer transitions 0/181 dead transitions. [2024-06-28 00:03:25,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 181 transitions, 1922 flow [2024-06-28 00:03:25,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:03:25,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:03:25,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-28 00:03:25,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38920454545454547 [2024-06-28 00:03:25,119 INFO L175 Difference]: Start difference. First operand has 199 places, 169 transitions, 1502 flow. Second operand 11 states and 137 transitions. [2024-06-28 00:03:25,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 181 transitions, 1922 flow [2024-06-28 00:03:25,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 181 transitions, 1853 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-28 00:03:25,179 INFO L231 Difference]: Finished difference. Result has 202 places, 171 transitions, 1530 flow [2024-06-28 00:03:25,179 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1433, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1530, PETRI_PLACES=202, PETRI_TRANSITIONS=171} [2024-06-28 00:03:25,179 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 171 predicate places. [2024-06-28 00:03:25,180 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 171 transitions, 1530 flow [2024-06-28 00:03:25,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:25,180 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:25,180 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:25,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 00:03:25,180 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:03:25,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:25,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1721743711, now seen corresponding path program 1 times [2024-06-28 00:03:25,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:25,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181600689] [2024-06-28 00:03:25,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:25,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:25,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:26,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:26,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:26,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181600689] [2024-06-28 00:03:26,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181600689] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:26,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:26,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:03:26,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835776261] [2024-06-28 00:03:26,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:26,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:03:26,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:26,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:03:26,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:03:26,952 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 00:03:26,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 171 transitions, 1530 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:26,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:26,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 00:03:26,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:27,350 INFO L124 PetriNetUnfolderBase]: 370/729 cut-off events. [2024-06-28 00:03:27,350 INFO L125 PetriNetUnfolderBase]: For 24873/24873 co-relation queries the response was YES. [2024-06-28 00:03:27,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3844 conditions, 729 events. 370/729 cut-off events. For 24873/24873 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 3882 event pairs, 55 based on Foata normal form. 1/729 useless extension candidates. Maximal degree in co-relation 3766. Up to 609 conditions per place. [2024-06-28 00:03:27,357 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 147 selfloop transitions, 39 changer transitions 0/190 dead transitions. [2024-06-28 00:03:27,357 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 190 transitions, 1974 flow [2024-06-28 00:03:27,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:03:27,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:03:27,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 154 transitions. [2024-06-28 00:03:27,364 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4010416666666667 [2024-06-28 00:03:27,364 INFO L175 Difference]: Start difference. First operand has 202 places, 171 transitions, 1530 flow. Second operand 12 states and 154 transitions. [2024-06-28 00:03:27,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 190 transitions, 1974 flow [2024-06-28 00:03:27,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 190 transitions, 1893 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-28 00:03:27,425 INFO L231 Difference]: Finished difference. Result has 205 places, 173 transitions, 1566 flow [2024-06-28 00:03:27,425 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1449, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1566, PETRI_PLACES=205, PETRI_TRANSITIONS=173} [2024-06-28 00:03:27,425 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 174 predicate places. [2024-06-28 00:03:27,425 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 173 transitions, 1566 flow [2024-06-28 00:03:27,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:27,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:27,426 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:27,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 00:03:27,426 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:03:27,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:27,426 INFO L85 PathProgramCache]: Analyzing trace with hash -467850773, now seen corresponding path program 2 times [2024-06-28 00:03:27,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:27,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079172842] [2024-06-28 00:03:27,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:27,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:27,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:29,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:29,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:29,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079172842] [2024-06-28 00:03:29,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079172842] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:29,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:29,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:03:29,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310341106] [2024-06-28 00:03:29,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:29,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:03:29,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:29,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:03:29,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:03:29,208 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:03:29,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 173 transitions, 1566 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) [2024-06-28 00:03:29,209 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:29,209 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:03:29,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:29,846 INFO L124 PetriNetUnfolderBase]: 378/743 cut-off events. [2024-06-28 00:03:29,846 INFO L125 PetriNetUnfolderBase]: For 27131/27131 co-relation queries the response was YES. [2024-06-28 00:03:29,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4037 conditions, 743 events. 378/743 cut-off events. For 27131/27131 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 3973 event pairs, 51 based on Foata normal form. 1/743 useless extension candidates. Maximal degree in co-relation 3958. Up to 546 conditions per place. [2024-06-28 00:03:29,852 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 130 selfloop transitions, 55 changer transitions 0/189 dead transitions. [2024-06-28 00:03:29,852 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 189 transitions, 2136 flow [2024-06-28 00:03:29,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:03:29,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:03:29,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 146 transitions. [2024-06-28 00:03:29,854 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45625 [2024-06-28 00:03:29,854 INFO L175 Difference]: Start difference. First operand has 205 places, 173 transitions, 1566 flow. Second operand 10 states and 146 transitions. [2024-06-28 00:03:29,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 189 transitions, 2136 flow [2024-06-28 00:03:29,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 189 transitions, 2028 flow, removed 12 selfloop flow, removed 11 redundant places. [2024-06-28 00:03:29,939 INFO L231 Difference]: Finished difference. Result has 204 places, 177 transitions, 1642 flow [2024-06-28 00:03:29,940 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1458, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1642, PETRI_PLACES=204, PETRI_TRANSITIONS=177} [2024-06-28 00:03:29,940 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 173 predicate places. [2024-06-28 00:03:29,940 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 177 transitions, 1642 flow [2024-06-28 00:03:29,940 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) [2024-06-28 00:03:29,940 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:29,941 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:29,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 00:03:29,941 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:03:29,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:29,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1104661349, now seen corresponding path program 3 times [2024-06-28 00:03:29,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:29,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050575550] [2024-06-28 00:03:29,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:29,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:29,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:31,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:31,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:31,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050575550] [2024-06-28 00:03:31,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050575550] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:31,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:31,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:03:31,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582936186] [2024-06-28 00:03:31,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:31,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:03:31,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:31,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:03:31,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:03:31,565 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:03:31,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 177 transitions, 1642 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) [2024-06-28 00:03:31,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:31,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:03:31,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:32,017 INFO L124 PetriNetUnfolderBase]: 386/758 cut-off events. [2024-06-28 00:03:32,017 INFO L125 PetriNetUnfolderBase]: For 30067/30067 co-relation queries the response was YES. [2024-06-28 00:03:32,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4251 conditions, 758 events. 386/758 cut-off events. For 30067/30067 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4070 event pairs, 51 based on Foata normal form. 1/758 useless extension candidates. Maximal degree in co-relation 4171. Up to 556 conditions per place. [2024-06-28 00:03:32,024 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 123 selfloop transitions, 67 changer transitions 0/194 dead transitions. [2024-06-28 00:03:32,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 194 transitions, 2344 flow [2024-06-28 00:03:32,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:03:32,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:03:32,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 145 transitions. [2024-06-28 00:03:32,029 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.453125 [2024-06-28 00:03:32,030 INFO L175 Difference]: Start difference. First operand has 204 places, 177 transitions, 1642 flow. Second operand 10 states and 145 transitions. [2024-06-28 00:03:32,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 194 transitions, 2344 flow [2024-06-28 00:03:32,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 194 transitions, 2257 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-28 00:03:32,148 INFO L231 Difference]: Finished difference. Result has 208 places, 181 transitions, 1767 flow [2024-06-28 00:03:32,148 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1559, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1767, PETRI_PLACES=208, PETRI_TRANSITIONS=181} [2024-06-28 00:03:32,148 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 177 predicate places. [2024-06-28 00:03:32,149 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 181 transitions, 1767 flow [2024-06-28 00:03:32,149 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) [2024-06-28 00:03:32,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:32,149 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:32,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 00:03:32,149 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:03:32,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:32,150 INFO L85 PathProgramCache]: Analyzing trace with hash 1104928259, now seen corresponding path program 4 times [2024-06-28 00:03:32,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:32,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027627463] [2024-06-28 00:03:32,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:32,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:32,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:33,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:33,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:33,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027627463] [2024-06-28 00:03:33,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027627463] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:33,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:33,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:03:33,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105604557] [2024-06-28 00:03:33,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:33,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:03:33,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:33,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:03:33,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:03:33,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:03:33,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 181 transitions, 1767 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) [2024-06-28 00:03:33,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:33,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:03:33,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:33,988 INFO L124 PetriNetUnfolderBase]: 384/755 cut-off events. [2024-06-28 00:03:33,989 INFO L125 PetriNetUnfolderBase]: For 29502/29502 co-relation queries the response was YES. [2024-06-28 00:03:33,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4275 conditions, 755 events. 384/755 cut-off events. For 29502/29502 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4060 event pairs, 55 based on Foata normal form. 1/755 useless extension candidates. Maximal degree in co-relation 4193. Up to 554 conditions per place. [2024-06-28 00:03:33,995 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 115 selfloop transitions, 74 changer transitions 0/193 dead transitions. [2024-06-28 00:03:33,995 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 193 transitions, 2285 flow [2024-06-28 00:03:33,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:03:33,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:03:33,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 143 transitions. [2024-06-28 00:03:33,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.446875 [2024-06-28 00:03:33,998 INFO L175 Difference]: Start difference. First operand has 208 places, 181 transitions, 1767 flow. Second operand 10 states and 143 transitions. [2024-06-28 00:03:33,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 193 transitions, 2285 flow [2024-06-28 00:03:34,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 193 transitions, 2140 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-06-28 00:03:34,114 INFO L231 Difference]: Finished difference. Result has 212 places, 181 transitions, 1775 flow [2024-06-28 00:03:34,115 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1622, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1775, PETRI_PLACES=212, PETRI_TRANSITIONS=181} [2024-06-28 00:03:34,115 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 181 predicate places. [2024-06-28 00:03:34,115 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 181 transitions, 1775 flow [2024-06-28 00:03:34,116 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) [2024-06-28 00:03:34,116 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:34,116 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:34,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 00:03:34,116 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:03:34,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:34,117 INFO L85 PathProgramCache]: Analyzing trace with hash 88386545, now seen corresponding path program 5 times [2024-06-28 00:03:34,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:34,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103059622] [2024-06-28 00:03:34,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:34,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:34,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:35,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:35,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:35,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103059622] [2024-06-28 00:03:35,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103059622] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:35,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:35,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:03:35,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508974385] [2024-06-28 00:03:35,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:35,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:03:35,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:35,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:03:35,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:03:36,022 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:03:36,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 181 transitions, 1775 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) [2024-06-28 00:03:36,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:36,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:03:36,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:36,379 INFO L124 PetriNetUnfolderBase]: 382/752 cut-off events. [2024-06-28 00:03:36,379 INFO L125 PetriNetUnfolderBase]: For 28653/28653 co-relation queries the response was YES. [2024-06-28 00:03:36,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4209 conditions, 752 events. 382/752 cut-off events. For 28653/28653 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4032 event pairs, 57 based on Foata normal form. 1/752 useless extension candidates. Maximal degree in co-relation 4126. Up to 552 conditions per place. [2024-06-28 00:03:36,386 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 126 selfloop transitions, 62 changer transitions 0/192 dead transitions. [2024-06-28 00:03:36,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 192 transitions, 2177 flow [2024-06-28 00:03:36,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:03:36,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:03:36,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 144 transitions. [2024-06-28 00:03:36,387 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-28 00:03:36,388 INFO L175 Difference]: Start difference. First operand has 212 places, 181 transitions, 1775 flow. Second operand 10 states and 144 transitions. [2024-06-28 00:03:36,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 192 transitions, 2177 flow [2024-06-28 00:03:36,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 192 transitions, 2016 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-28 00:03:36,483 INFO L231 Difference]: Finished difference. Result has 214 places, 181 transitions, 1744 flow [2024-06-28 00:03:36,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1614, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1744, PETRI_PLACES=214, PETRI_TRANSITIONS=181} [2024-06-28 00:03:36,484 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 183 predicate places. [2024-06-28 00:03:36,484 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 181 transitions, 1744 flow [2024-06-28 00:03:36,484 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) [2024-06-28 00:03:36,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:36,485 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:36,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 00:03:36,485 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:03:36,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:36,486 INFO L85 PathProgramCache]: Analyzing trace with hash 96015025, now seen corresponding path program 1 times [2024-06-28 00:03:36,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:36,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283216315] [2024-06-28 00:03:36,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:36,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:36,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:37,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:37,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:37,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283216315] [2024-06-28 00:03:37,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283216315] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:37,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:37,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:03:37,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268807599] [2024-06-28 00:03:37,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:37,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:03:37,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:37,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:03:37,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:03:38,111 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:03:38,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 181 transitions, 1744 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:38,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:38,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:03:38,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:38,408 INFO L124 PetriNetUnfolderBase]: 386/761 cut-off events. [2024-06-28 00:03:38,408 INFO L125 PetriNetUnfolderBase]: For 31630/31630 co-relation queries the response was YES. [2024-06-28 00:03:38,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4273 conditions, 761 events. 386/761 cut-off events. For 31630/31630 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 4118 event pairs, 66 based on Foata normal form. 2/762 useless extension candidates. Maximal degree in co-relation 4189. Up to 655 conditions per place. [2024-06-28 00:03:38,415 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 165 selfloop transitions, 26 changer transitions 0/195 dead transitions. [2024-06-28 00:03:38,415 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 195 transitions, 2188 flow [2024-06-28 00:03:38,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:03:38,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:03:38,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 140 transitions. [2024-06-28 00:03:38,416 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-28 00:03:38,416 INFO L175 Difference]: Start difference. First operand has 214 places, 181 transitions, 1744 flow. Second operand 10 states and 140 transitions. [2024-06-28 00:03:38,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 195 transitions, 2188 flow [2024-06-28 00:03:38,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 195 transitions, 1998 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-06-28 00:03:38,500 INFO L231 Difference]: Finished difference. Result has 213 places, 182 transitions, 1644 flow [2024-06-28 00:03:38,500 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1554, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1644, PETRI_PLACES=213, PETRI_TRANSITIONS=182} [2024-06-28 00:03:38,501 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 182 predicate places. [2024-06-28 00:03:38,501 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 182 transitions, 1644 flow [2024-06-28 00:03:38,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:38,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:38,501 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:38,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 00:03:38,501 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:03:38,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:38,502 INFO L85 PathProgramCache]: Analyzing trace with hash -24950845, now seen corresponding path program 6 times [2024-06-28 00:03:38,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:38,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137837755] [2024-06-28 00:03:38,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:38,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:38,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:39,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:39,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:39,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137837755] [2024-06-28 00:03:39,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137837755] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:39,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:39,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:03:39,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092228321] [2024-06-28 00:03:39,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:39,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:03:39,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:39,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:03:39,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:03:40,008 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:03:40,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 182 transitions, 1644 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) [2024-06-28 00:03:40,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:40,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:03:40,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:40,340 INFO L124 PetriNetUnfolderBase]: 399/780 cut-off events. [2024-06-28 00:03:40,341 INFO L125 PetriNetUnfolderBase]: For 34642/34642 co-relation queries the response was YES. [2024-06-28 00:03:40,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4466 conditions, 780 events. 399/780 cut-off events. For 34642/34642 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 4248 event pairs, 59 based on Foata normal form. 1/775 useless extension candidates. Maximal degree in co-relation 4382. Up to 482 conditions per place. [2024-06-28 00:03:40,347 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 112 selfloop transitions, 86 changer transitions 0/202 dead transitions. [2024-06-28 00:03:40,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 202 transitions, 2564 flow [2024-06-28 00:03:40,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:03:40,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:03:40,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 150 transitions. [2024-06-28 00:03:40,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46875 [2024-06-28 00:03:40,348 INFO L175 Difference]: Start difference. First operand has 213 places, 182 transitions, 1644 flow. Second operand 10 states and 150 transitions. [2024-06-28 00:03:40,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 202 transitions, 2564 flow [2024-06-28 00:03:40,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 202 transitions, 2484 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-28 00:03:40,417 INFO L231 Difference]: Finished difference. Result has 215 places, 190 transitions, 1889 flow [2024-06-28 00:03:40,418 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1564, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1889, PETRI_PLACES=215, PETRI_TRANSITIONS=190} [2024-06-28 00:03:40,418 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 184 predicate places. [2024-06-28 00:03:40,418 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 190 transitions, 1889 flow [2024-06-28 00:03:40,418 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) [2024-06-28 00:03:40,418 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:40,418 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:40,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 00:03:40,418 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:03:40,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:40,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1305292359, now seen corresponding path program 7 times [2024-06-28 00:03:40,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:40,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878173124] [2024-06-28 00:03:40,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:40,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:40,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:41,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:41,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:41,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878173124] [2024-06-28 00:03:41,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878173124] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:41,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:41,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:03:41,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139462633] [2024-06-28 00:03:41,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:41,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:03:41,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:41,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:03:41,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:03:42,002 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:03:42,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 190 transitions, 1889 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) [2024-06-28 00:03:42,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:42,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:03:42,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:42,426 INFO L124 PetriNetUnfolderBase]: 402/785 cut-off events. [2024-06-28 00:03:42,427 INFO L125 PetriNetUnfolderBase]: For 35780/35780 co-relation queries the response was YES. [2024-06-28 00:03:42,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4615 conditions, 785 events. 402/785 cut-off events. For 35780/35780 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 4276 event pairs, 59 based on Foata normal form. 1/780 useless extension candidates. Maximal degree in co-relation 4529. Up to 486 conditions per place. [2024-06-28 00:03:42,433 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 113 selfloop transitions, 87 changer transitions 0/204 dead transitions. [2024-06-28 00:03:42,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 204 transitions, 2715 flow [2024-06-28 00:03:42,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:03:42,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:03:42,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 151 transitions. [2024-06-28 00:03:42,434 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.471875 [2024-06-28 00:03:42,434 INFO L175 Difference]: Start difference. First operand has 215 places, 190 transitions, 1889 flow. Second operand 10 states and 151 transitions. [2024-06-28 00:03:42,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 204 transitions, 2715 flow [2024-06-28 00:03:42,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 204 transitions, 2621 flow, removed 26 selfloop flow, removed 4 redundant places. [2024-06-28 00:03:42,505 INFO L231 Difference]: Finished difference. Result has 221 places, 192 transitions, 2014 flow [2024-06-28 00:03:42,506 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1801, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2014, PETRI_PLACES=221, PETRI_TRANSITIONS=192} [2024-06-28 00:03:42,506 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 190 predicate places. [2024-06-28 00:03:42,506 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 192 transitions, 2014 flow [2024-06-28 00:03:42,506 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) [2024-06-28 00:03:42,507 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:42,507 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:42,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 00:03:42,507 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:03:42,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:42,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1270736585, now seen corresponding path program 8 times [2024-06-28 00:03:42,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:42,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196898105] [2024-06-28 00:03:42,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:42,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:42,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:44,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:44,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:44,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196898105] [2024-06-28 00:03:44,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196898105] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:44,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:44,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:03:44,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870572986] [2024-06-28 00:03:44,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:44,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:03:44,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:44,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:03:44,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:03:44,105 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:03:44,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 192 transitions, 2014 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) [2024-06-28 00:03:44,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:44,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:03:44,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:44,563 INFO L124 PetriNetUnfolderBase]: 410/800 cut-off events. [2024-06-28 00:03:44,563 INFO L125 PetriNetUnfolderBase]: For 39223/39223 co-relation queries the response was YES. [2024-06-28 00:03:44,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4923 conditions, 800 events. 410/800 cut-off events. For 39223/39223 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 4378 event pairs, 57 based on Foata normal form. 1/795 useless extension candidates. Maximal degree in co-relation 4835. Up to 496 conditions per place. [2024-06-28 00:03:44,571 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 119 selfloop transitions, 85 changer transitions 0/208 dead transitions. [2024-06-28 00:03:44,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 208 transitions, 2902 flow [2024-06-28 00:03:44,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:03:44,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:03:44,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 152 transitions. [2024-06-28 00:03:44,575 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.475 [2024-06-28 00:03:44,575 INFO L175 Difference]: Start difference. First operand has 221 places, 192 transitions, 2014 flow. Second operand 10 states and 152 transitions. [2024-06-28 00:03:44,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 208 transitions, 2902 flow [2024-06-28 00:03:44,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 208 transitions, 2758 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-28 00:03:44,677 INFO L231 Difference]: Finished difference. Result has 225 places, 196 transitions, 2133 flow [2024-06-28 00:03:44,677 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1874, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2133, PETRI_PLACES=225, PETRI_TRANSITIONS=196} [2024-06-28 00:03:44,677 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 194 predicate places. [2024-06-28 00:03:44,677 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 196 transitions, 2133 flow [2024-06-28 00:03:44,678 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) [2024-06-28 00:03:44,678 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:44,678 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:44,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 00:03:44,678 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:03:44,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:44,679 INFO L85 PathProgramCache]: Analyzing trace with hash -32569405, now seen corresponding path program 9 times [2024-06-28 00:03:44,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:44,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512176821] [2024-06-28 00:03:44,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:44,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:44,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:46,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:46,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:46,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512176821] [2024-06-28 00:03:46,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512176821] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:46,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:46,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:03:46,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32432596] [2024-06-28 00:03:46,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:46,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:03:46,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:46,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:03:46,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:03:46,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:03:46,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 196 transitions, 2133 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) [2024-06-28 00:03:46,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:46,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:03:46,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:46,695 INFO L124 PetriNetUnfolderBase]: 408/797 cut-off events. [2024-06-28 00:03:46,695 INFO L125 PetriNetUnfolderBase]: For 38788/38788 co-relation queries the response was YES. [2024-06-28 00:03:46,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4850 conditions, 797 events. 408/797 cut-off events. For 38788/38788 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 4373 event pairs, 59 based on Foata normal form. 1/792 useless extension candidates. Maximal degree in co-relation 4761. Up to 494 conditions per place. [2024-06-28 00:03:46,706 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 109 selfloop transitions, 94 changer transitions 0/207 dead transitions. [2024-06-28 00:03:46,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 207 transitions, 2811 flow [2024-06-28 00:03:46,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:03:46,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:03:46,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 148 transitions. [2024-06-28 00:03:46,707 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4625 [2024-06-28 00:03:46,707 INFO L175 Difference]: Start difference. First operand has 225 places, 196 transitions, 2133 flow. Second operand 10 states and 148 transitions. [2024-06-28 00:03:46,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 207 transitions, 2811 flow [2024-06-28 00:03:46,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 207 transitions, 2450 flow, removed 33 selfloop flow, removed 9 redundant places. [2024-06-28 00:03:46,792 INFO L231 Difference]: Finished difference. Result has 226 places, 196 transitions, 1965 flow [2024-06-28 00:03:46,793 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1772, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1965, PETRI_PLACES=226, PETRI_TRANSITIONS=196} [2024-06-28 00:03:46,793 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 195 predicate places. [2024-06-28 00:03:46,793 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 196 transitions, 1965 flow [2024-06-28 00:03:46,793 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) [2024-06-28 00:03:46,794 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:46,794 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:46,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 00:03:46,794 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:03:46,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:46,795 INFO L85 PathProgramCache]: Analyzing trace with hash 233337125, now seen corresponding path program 10 times [2024-06-28 00:03:46,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:46,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698696881] [2024-06-28 00:03:46,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:46,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:46,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:48,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:48,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:48,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698696881] [2024-06-28 00:03:48,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698696881] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:48,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:48,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:03:48,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737541207] [2024-06-28 00:03:48,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:48,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:03:48,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:48,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:03:48,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:03:48,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 00:03:48,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 196 transitions, 1965 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:48,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:48,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 00:03:48,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:48,870 INFO L124 PetriNetUnfolderBase]: 411/807 cut-off events. [2024-06-28 00:03:48,870 INFO L125 PetriNetUnfolderBase]: For 39159/39159 co-relation queries the response was YES. [2024-06-28 00:03:48,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4765 conditions, 807 events. 411/807 cut-off events. For 39159/39159 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 4427 event pairs, 120 based on Foata normal form. 1/807 useless extension candidates. Maximal degree in co-relation 4676. Up to 721 conditions per place. [2024-06-28 00:03:48,875 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 185 selfloop transitions, 18 changer transitions 0/207 dead transitions. [2024-06-28 00:03:48,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 207 transitions, 2431 flow [2024-06-28 00:03:48,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:03:48,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:03:48,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-28 00:03:48,876 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3778409090909091 [2024-06-28 00:03:48,876 INFO L175 Difference]: Start difference. First operand has 226 places, 196 transitions, 1965 flow. Second operand 11 states and 133 transitions. [2024-06-28 00:03:48,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 207 transitions, 2431 flow [2024-06-28 00:03:48,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 207 transitions, 2237 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-28 00:03:48,966 INFO L231 Difference]: Finished difference. Result has 228 places, 198 transitions, 1856 flow [2024-06-28 00:03:48,966 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1775, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1856, PETRI_PLACES=228, PETRI_TRANSITIONS=198} [2024-06-28 00:03:48,966 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 197 predicate places. [2024-06-28 00:03:48,967 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 198 transitions, 1856 flow [2024-06-28 00:03:48,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:48,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:48,967 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:48,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 00:03:48,967 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:03:48,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:48,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1708805083, now seen corresponding path program 11 times [2024-06-28 00:03:48,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:48,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388527498] [2024-06-28 00:03:48,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:48,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:48,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:50,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:50,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:50,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388527498] [2024-06-28 00:03:50,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388527498] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:50,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:50,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:03:50,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469246956] [2024-06-28 00:03:50,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:50,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:03:50,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:50,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:03:50,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:03:50,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:03:50,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 198 transitions, 1856 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) [2024-06-28 00:03:50,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:50,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:03:50,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:50,872 INFO L124 PetriNetUnfolderBase]: 409/801 cut-off events. [2024-06-28 00:03:50,873 INFO L125 PetriNetUnfolderBase]: For 38032/38032 co-relation queries the response was YES. [2024-06-28 00:03:50,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4538 conditions, 801 events. 409/801 cut-off events. For 38032/38032 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 4401 event pairs, 57 based on Foata normal form. 1/796 useless extension candidates. Maximal degree in co-relation 4448. Up to 496 conditions per place. [2024-06-28 00:03:50,878 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 116 selfloop transitions, 89 changer transitions 0/209 dead transitions. [2024-06-28 00:03:50,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 209 transitions, 2546 flow [2024-06-28 00:03:50,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:03:50,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:03:50,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 150 transitions. [2024-06-28 00:03:50,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46875 [2024-06-28 00:03:50,880 INFO L175 Difference]: Start difference. First operand has 228 places, 198 transitions, 1856 flow. Second operand 10 states and 150 transitions. [2024-06-28 00:03:50,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 209 transitions, 2546 flow [2024-06-28 00:03:50,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 209 transitions, 2463 flow, removed 25 selfloop flow, removed 9 redundant places. [2024-06-28 00:03:50,969 INFO L231 Difference]: Finished difference. Result has 229 places, 198 transitions, 1956 flow [2024-06-28 00:03:50,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1773, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1956, PETRI_PLACES=229, PETRI_TRANSITIONS=198} [2024-06-28 00:03:50,969 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 198 predicate places. [2024-06-28 00:03:50,969 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 198 transitions, 1956 flow [2024-06-28 00:03:50,969 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) [2024-06-28 00:03:50,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:50,969 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:50,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-28 00:03:50,970 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:03:50,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:50,970 INFO L85 PathProgramCache]: Analyzing trace with hash 223210533, now seen corresponding path program 12 times [2024-06-28 00:03:50,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:50,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498867369] [2024-06-28 00:03:50,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:50,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:50,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:52,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:52,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:52,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498867369] [2024-06-28 00:03:52,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498867369] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:52,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:52,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:03:52,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494387625] [2024-06-28 00:03:52,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:52,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:03:52,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:52,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:03:52,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:03:52,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:03:52,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 198 transitions, 1956 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) [2024-06-28 00:03:52,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:52,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:03:52,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:52,843 INFO L124 PetriNetUnfolderBase]: 412/806 cut-off events. [2024-06-28 00:03:52,843 INFO L125 PetriNetUnfolderBase]: For 39395/39395 co-relation queries the response was YES. [2024-06-28 00:03:52,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4709 conditions, 806 events. 412/806 cut-off events. For 39395/39395 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 4434 event pairs, 61 based on Foata normal form. 1/801 useless extension candidates. Maximal degree in co-relation 4618. Up to 500 conditions per place. [2024-06-28 00:03:52,849 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 100 selfloop transitions, 107 changer transitions 0/211 dead transitions. [2024-06-28 00:03:52,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 211 transitions, 2698 flow [2024-06-28 00:03:52,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:03:52,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:03:52,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 148 transitions. [2024-06-28 00:03:52,850 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4625 [2024-06-28 00:03:52,850 INFO L175 Difference]: Start difference. First operand has 229 places, 198 transitions, 1956 flow. Second operand 10 states and 148 transitions. [2024-06-28 00:03:52,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 211 transitions, 2698 flow [2024-06-28 00:03:52,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 211 transitions, 2519 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-28 00:03:52,935 INFO L231 Difference]: Finished difference. Result has 231 places, 200 transitions, 2040 flow [2024-06-28 00:03:52,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1781, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2040, PETRI_PLACES=231, PETRI_TRANSITIONS=200} [2024-06-28 00:03:52,935 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 200 predicate places. [2024-06-28 00:03:52,936 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 200 transitions, 2040 flow [2024-06-28 00:03:52,936 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) [2024-06-28 00:03:52,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:52,936 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:52,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-28 00:03:52,936 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:03:52,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:52,936 INFO L85 PathProgramCache]: Analyzing trace with hash 222943623, now seen corresponding path program 13 times [2024-06-28 00:03:52,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:52,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275483281] [2024-06-28 00:03:52,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:52,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:52,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:55,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:55,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:55,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275483281] [2024-06-28 00:03:55,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275483281] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:55,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:55,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:03:55,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814465958] [2024-06-28 00:03:55,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:55,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:03:55,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:55,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:03:55,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:03:55,194 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:03:55,194 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 200 transitions, 2040 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) [2024-06-28 00:03:55,194 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:55,194 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:03:55,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:55,702 INFO L124 PetriNetUnfolderBase]: 410/803 cut-off events. [2024-06-28 00:03:55,703 INFO L125 PetriNetUnfolderBase]: For 38350/38350 co-relation queries the response was YES. [2024-06-28 00:03:55,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4673 conditions, 803 events. 410/803 cut-off events. For 38350/38350 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 4413 event pairs, 61 based on Foata normal form. 1/798 useless extension candidates. Maximal degree in co-relation 4581. Up to 498 conditions per place. [2024-06-28 00:03:55,709 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 98 selfloop transitions, 108 changer transitions 0/210 dead transitions. [2024-06-28 00:03:55,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 210 transitions, 2606 flow [2024-06-28 00:03:55,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:03:55,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:03:55,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 146 transitions. [2024-06-28 00:03:55,711 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45625 [2024-06-28 00:03:55,711 INFO L175 Difference]: Start difference. First operand has 231 places, 200 transitions, 2040 flow. Second operand 10 states and 146 transitions. [2024-06-28 00:03:55,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 210 transitions, 2606 flow [2024-06-28 00:03:55,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 210 transitions, 2326 flow, removed 30 selfloop flow, removed 8 redundant places. [2024-06-28 00:03:55,800 INFO L231 Difference]: Finished difference. Result has 233 places, 200 transitions, 1981 flow [2024-06-28 00:03:55,800 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1760, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1981, PETRI_PLACES=233, PETRI_TRANSITIONS=200} [2024-06-28 00:03:55,800 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 202 predicate places. [2024-06-28 00:03:55,801 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 200 transitions, 1981 flow [2024-06-28 00:03:55,801 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) [2024-06-28 00:03:55,801 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:55,801 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:55,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-28 00:03:55,801 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:03:55,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:55,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1716423643, now seen corresponding path program 14 times [2024-06-28 00:03:55,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:55,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130654613] [2024-06-28 00:03:55,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:55,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:55,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:57,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:57,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:57,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130654613] [2024-06-28 00:03:57,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130654613] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:57,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:57,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:03:57,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686183123] [2024-06-28 00:03:57,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:57,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:03:57,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:57,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:03:57,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:03:57,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:03:57,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 200 transitions, 1981 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) [2024-06-28 00:03:57,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:57,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:03:57,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:57,869 INFO L124 PetriNetUnfolderBase]: 413/808 cut-off events. [2024-06-28 00:03:57,869 INFO L125 PetriNetUnfolderBase]: For 39162/39162 co-relation queries the response was YES. [2024-06-28 00:03:57,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4680 conditions, 808 events. 413/808 cut-off events. For 39162/39162 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 4432 event pairs, 59 based on Foata normal form. 1/803 useless extension candidates. Maximal degree in co-relation 4587. Up to 502 conditions per place. [2024-06-28 00:03:57,876 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 118 selfloop transitions, 90 changer transitions 0/212 dead transitions. [2024-06-28 00:03:57,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 212 transitions, 2593 flow [2024-06-28 00:03:57,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:03:57,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:03:57,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 151 transitions. [2024-06-28 00:03:57,877 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.471875 [2024-06-28 00:03:57,877 INFO L175 Difference]: Start difference. First operand has 233 places, 200 transitions, 1981 flow. Second operand 10 states and 151 transitions. [2024-06-28 00:03:57,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 212 transitions, 2593 flow [2024-06-28 00:03:57,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 212 transitions, 2350 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-28 00:03:57,970 INFO L231 Difference]: Finished difference. Result has 233 places, 202 transitions, 1963 flow [2024-06-28 00:03:57,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1742, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1963, PETRI_PLACES=233, PETRI_TRANSITIONS=202} [2024-06-28 00:03:57,971 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 202 predicate places. [2024-06-28 00:03:57,971 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 202 transitions, 1963 flow [2024-06-28 00:03:57,971 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) [2024-06-28 00:03:57,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:57,971 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:57,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-28 00:03:57,971 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:03:57,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:57,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1915725433, now seen corresponding path program 15 times [2024-06-28 00:03:57,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:57,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800528921] [2024-06-28 00:03:57,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:57,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:57,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:59,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:59,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:59,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800528921] [2024-06-28 00:03:59,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800528921] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:59,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:59,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:03:59,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59592504] [2024-06-28 00:03:59,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:59,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:03:59,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:59,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:03:59,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:03:59,762 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:03:59,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 202 transitions, 1963 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) [2024-06-28 00:03:59,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:59,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:03:59,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:00,223 INFO L124 PetriNetUnfolderBase]: 411/805 cut-off events. [2024-06-28 00:04:00,224 INFO L125 PetriNetUnfolderBase]: For 37877/37877 co-relation queries the response was YES. [2024-06-28 00:04:00,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4556 conditions, 805 events. 411/805 cut-off events. For 37877/37877 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 4436 event pairs, 61 based on Foata normal form. 1/800 useless extension candidates. Maximal degree in co-relation 4462. Up to 500 conditions per place. [2024-06-28 00:04:00,233 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 111 selfloop transitions, 96 changer transitions 0/211 dead transitions. [2024-06-28 00:04:00,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 211 transitions, 2397 flow [2024-06-28 00:04:00,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:04:00,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:04:00,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 147 transitions. [2024-06-28 00:04:00,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.459375 [2024-06-28 00:04:00,234 INFO L175 Difference]: Start difference. First operand has 233 places, 202 transitions, 1963 flow. Second operand 10 states and 147 transitions. [2024-06-28 00:04:00,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 211 transitions, 2397 flow [2024-06-28 00:04:00,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 211 transitions, 2180 flow, removed 25 selfloop flow, removed 7 redundant places. [2024-06-28 00:04:00,353 INFO L231 Difference]: Finished difference. Result has 236 places, 202 transitions, 1943 flow [2024-06-28 00:04:00,354 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1746, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1943, PETRI_PLACES=236, PETRI_TRANSITIONS=202} [2024-06-28 00:04:00,354 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 205 predicate places. [2024-06-28 00:04:00,354 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 202 transitions, 1943 flow [2024-06-28 00:04:00,354 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) [2024-06-28 00:04:00,354 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:00,355 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:00,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-28 00:04:00,355 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:04:00,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:00,356 INFO L85 PathProgramCache]: Analyzing trace with hash -24940925, now seen corresponding path program 2 times [2024-06-28 00:04:00,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:00,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775095776] [2024-06-28 00:04:00,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:00,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:00,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:02,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:02,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:02,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775095776] [2024-06-28 00:04:02,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775095776] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:02,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:02,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:04:02,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951002985] [2024-06-28 00:04:02,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:02,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:04:02,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:02,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:04:02,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:04:02,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:04:02,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 202 transitions, 1943 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:02,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:02,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:04:02,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:02,699 INFO L124 PetriNetUnfolderBase]: 415/815 cut-off events. [2024-06-28 00:04:02,700 INFO L125 PetriNetUnfolderBase]: For 41678/41678 co-relation queries the response was YES. [2024-06-28 00:04:02,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4626 conditions, 815 events. 415/815 cut-off events. For 41678/41678 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 4513 event pairs, 71 based on Foata normal form. 2/814 useless extension candidates. Maximal degree in co-relation 4531. Up to 663 conditions per place. [2024-06-28 00:04:02,707 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 168 selfloop transitions, 42 changer transitions 0/214 dead transitions. [2024-06-28 00:04:02,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 214 transitions, 2421 flow [2024-06-28 00:04:02,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:04:02,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:04:02,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 144 transitions. [2024-06-28 00:04:02,708 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-28 00:04:02,709 INFO L175 Difference]: Start difference. First operand has 236 places, 202 transitions, 1943 flow. Second operand 10 states and 144 transitions. [2024-06-28 00:04:02,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 214 transitions, 2421 flow [2024-06-28 00:04:02,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 214 transitions, 2196 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-06-28 00:04:02,801 INFO L231 Difference]: Finished difference. Result has 235 places, 203 transitions, 1842 flow [2024-06-28 00:04:02,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1718, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1842, PETRI_PLACES=235, PETRI_TRANSITIONS=203} [2024-06-28 00:04:02,802 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 204 predicate places. [2024-06-28 00:04:02,802 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 203 transitions, 1842 flow [2024-06-28 00:04:02,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:02,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:02,802 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:02,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-28 00:04:02,803 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:04:02,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:02,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1708795163, now seen corresponding path program 3 times [2024-06-28 00:04:02,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:02,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501044246] [2024-06-28 00:04:02,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:02,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:02,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:04,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:04,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:04,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501044246] [2024-06-28 00:04:04,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501044246] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:04,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:04,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:04:04,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123871908] [2024-06-28 00:04:04,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:04,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:04:04,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:04,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:04:04,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:04:04,801 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:04:04,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 203 transitions, 1842 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:04,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:04,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:04:04,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:05,223 INFO L124 PetriNetUnfolderBase]: 419/827 cut-off events. [2024-06-28 00:04:05,223 INFO L125 PetriNetUnfolderBase]: For 43215/43215 co-relation queries the response was YES. [2024-06-28 00:04:05,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4616 conditions, 827 events. 419/827 cut-off events. For 43215/43215 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 4566 event pairs, 69 based on Foata normal form. 2/826 useless extension candidates. Maximal degree in co-relation 4521. Up to 671 conditions per place. [2024-06-28 00:04:05,229 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 171 selfloop transitions, 40 changer transitions 0/215 dead transitions. [2024-06-28 00:04:05,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 215 transitions, 2324 flow [2024-06-28 00:04:05,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:04:05,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:04:05,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 145 transitions. [2024-06-28 00:04:05,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.453125 [2024-06-28 00:04:05,231 INFO L175 Difference]: Start difference. First operand has 235 places, 203 transitions, 1842 flow. Second operand 10 states and 145 transitions. [2024-06-28 00:04:05,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 215 transitions, 2324 flow [2024-06-28 00:04:05,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 215 transitions, 2210 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-28 00:04:05,314 INFO L231 Difference]: Finished difference. Result has 237 places, 204 transitions, 1850 flow [2024-06-28 00:04:05,314 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1728, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1850, PETRI_PLACES=237, PETRI_TRANSITIONS=204} [2024-06-28 00:04:05,315 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 206 predicate places. [2024-06-28 00:04:05,315 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 204 transitions, 1850 flow [2024-06-28 00:04:05,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:05,315 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:05,315 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:05,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-28 00:04:05,315 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:04:05,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:05,316 INFO L85 PathProgramCache]: Analyzing trace with hash 548347523, now seen corresponding path program 4 times [2024-06-28 00:04:05,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:05,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948032014] [2024-06-28 00:04:05,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:05,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:05,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:07,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:07,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:07,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948032014] [2024-06-28 00:04:07,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948032014] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:07,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:07,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:04:07,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294497701] [2024-06-28 00:04:07,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:07,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:04:07,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:07,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:04:07,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:04:07,396 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 00:04:07,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 204 transitions, 1850 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 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) [2024-06-28 00:04:07,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:07,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 00:04:07,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:07,868 INFO L124 PetriNetUnfolderBase]: 430/849 cut-off events. [2024-06-28 00:04:07,868 INFO L125 PetriNetUnfolderBase]: For 50314/50314 co-relation queries the response was YES. [2024-06-28 00:04:07,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4941 conditions, 849 events. 430/849 cut-off events. For 50314/50314 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 4711 event pairs, 117 based on Foata normal form. 2/850 useless extension candidates. Maximal degree in co-relation 4845. Up to 728 conditions per place. [2024-06-28 00:04:07,874 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 192 selfloop transitions, 24 changer transitions 0/220 dead transitions. [2024-06-28 00:04:07,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 220 transitions, 2530 flow [2024-06-28 00:04:07,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:04:07,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:04:07,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 149 transitions. [2024-06-28 00:04:07,876 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3880208333333333 [2024-06-28 00:04:07,876 INFO L175 Difference]: Start difference. First operand has 237 places, 204 transitions, 1850 flow. Second operand 12 states and 149 transitions. [2024-06-28 00:04:07,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 220 transitions, 2530 flow [2024-06-28 00:04:07,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 220 transitions, 2418 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-28 00:04:07,985 INFO L231 Difference]: Finished difference. Result has 241 places, 206 transitions, 1868 flow [2024-06-28 00:04:07,986 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1738, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1868, PETRI_PLACES=241, PETRI_TRANSITIONS=206} [2024-06-28 00:04:07,986 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 210 predicate places. [2024-06-28 00:04:07,986 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 206 transitions, 1868 flow [2024-06-28 00:04:07,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 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) [2024-06-28 00:04:07,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:07,986 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:07,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-28 00:04:07,986 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:04:07,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:07,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1071184245, now seen corresponding path program 5 times [2024-06-28 00:04:07,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:07,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698702762] [2024-06-28 00:04:07,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:07,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:08,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:10,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:10,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:10,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698702762] [2024-06-28 00:04:10,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698702762] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:10,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:10,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:04:10,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522840566] [2024-06-28 00:04:10,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:10,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:04:10,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:10,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:04:10,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:04:10,282 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 00:04:10,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 206 transitions, 1868 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 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) [2024-06-28 00:04:10,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:10,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 00:04:10,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:10,723 INFO L124 PetriNetUnfolderBase]: 434/855 cut-off events. [2024-06-28 00:04:10,723 INFO L125 PetriNetUnfolderBase]: For 51888/51888 co-relation queries the response was YES. [2024-06-28 00:04:10,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4964 conditions, 855 events. 434/855 cut-off events. For 51888/51888 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 4754 event pairs, 119 based on Foata normal form. 2/856 useless extension candidates. Maximal degree in co-relation 4866. Up to 761 conditions per place. [2024-06-28 00:04:10,730 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 195 selfloop transitions, 19 changer transitions 0/218 dead transitions. [2024-06-28 00:04:10,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 218 transitions, 2360 flow [2024-06-28 00:04:10,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:04:10,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:04:10,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-28 00:04:10,731 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-28 00:04:10,732 INFO L175 Difference]: Start difference. First operand has 241 places, 206 transitions, 1868 flow. Second operand 11 states and 136 transitions. [2024-06-28 00:04:10,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 218 transitions, 2360 flow [2024-06-28 00:04:10,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 218 transitions, 2286 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-28 00:04:10,878 INFO L231 Difference]: Finished difference. Result has 244 places, 207 transitions, 1878 flow [2024-06-28 00:04:10,878 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1798, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1878, PETRI_PLACES=244, PETRI_TRANSITIONS=207} [2024-06-28 00:04:10,878 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 213 predicate places. [2024-06-28 00:04:10,878 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 207 transitions, 1878 flow [2024-06-28 00:04:10,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 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) [2024-06-28 00:04:10,878 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:10,879 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:10,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-28 00:04:10,879 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:04:10,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:10,880 INFO L85 PathProgramCache]: Analyzing trace with hash 547961573, now seen corresponding path program 6 times [2024-06-28 00:04:10,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:10,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732494914] [2024-06-28 00:04:10,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:10,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:10,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:12,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:12,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:12,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732494914] [2024-06-28 00:04:12,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732494914] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:12,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:12,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:04:12,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795790819] [2024-06-28 00:04:12,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:12,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:04:12,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:12,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:04:12,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:04:12,932 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 00:04:12,932 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 207 transitions, 1878 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 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) [2024-06-28 00:04:12,933 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:12,933 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 00:04:12,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:13,413 INFO L124 PetriNetUnfolderBase]: 431/850 cut-off events. [2024-06-28 00:04:13,413 INFO L125 PetriNetUnfolderBase]: For 46956/46956 co-relation queries the response was YES. [2024-06-28 00:04:13,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4730 conditions, 850 events. 431/850 cut-off events. For 46956/46956 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 4750 event pairs, 118 based on Foata normal form. 2/851 useless extension candidates. Maximal degree in co-relation 4630. Up to 750 conditions per place. [2024-06-28 00:04:13,421 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 192 selfloop transitions, 23 changer transitions 0/219 dead transitions. [2024-06-28 00:04:13,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 219 transitions, 2334 flow [2024-06-28 00:04:13,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:04:13,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:04:13,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 148 transitions. [2024-06-28 00:04:13,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2024-06-28 00:04:13,422 INFO L175 Difference]: Start difference. First operand has 244 places, 207 transitions, 1878 flow. Second operand 12 states and 148 transitions. [2024-06-28 00:04:13,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 219 transitions, 2334 flow [2024-06-28 00:04:13,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 219 transitions, 2234 flow, removed 32 selfloop flow, removed 9 redundant places. [2024-06-28 00:04:13,525 INFO L231 Difference]: Finished difference. Result has 247 places, 207 transitions, 1828 flow [2024-06-28 00:04:13,525 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1778, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1828, PETRI_PLACES=247, PETRI_TRANSITIONS=207} [2024-06-28 00:04:13,526 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 216 predicate places. [2024-06-28 00:04:13,526 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 207 transitions, 1828 flow [2024-06-28 00:04:13,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 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) [2024-06-28 00:04:13,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:13,527 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:13,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-28 00:04:13,527 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:04:13,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:13,527 INFO L85 PathProgramCache]: Analyzing trace with hash 223220453, now seen corresponding path program 7 times [2024-06-28 00:04:13,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:13,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180484400] [2024-06-28 00:04:13,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:13,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:13,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:15,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:15,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:15,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180484400] [2024-06-28 00:04:15,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180484400] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:15,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:15,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:04:15,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108364425] [2024-06-28 00:04:15,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:15,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:04:15,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:15,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:04:15,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:04:15,386 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:04:15,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 207 transitions, 1828 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:15,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:15,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:04:15,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:15,830 INFO L124 PetriNetUnfolderBase]: 428/844 cut-off events. [2024-06-28 00:04:15,830 INFO L125 PetriNetUnfolderBase]: For 41504/41504 co-relation queries the response was YES. [2024-06-28 00:04:15,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4435 conditions, 844 events. 428/844 cut-off events. For 41504/41504 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 4697 event pairs, 68 based on Foata normal form. 2/843 useless extension candidates. Maximal degree in co-relation 4334. Up to 690 conditions per place. [2024-06-28 00:04:15,838 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 169 selfloop transitions, 45 changer transitions 0/218 dead transitions. [2024-06-28 00:04:15,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 218 transitions, 2280 flow [2024-06-28 00:04:15,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:04:15,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:04:15,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 143 transitions. [2024-06-28 00:04:15,839 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.446875 [2024-06-28 00:04:15,839 INFO L175 Difference]: Start difference. First operand has 247 places, 207 transitions, 1828 flow. Second operand 10 states and 143 transitions. [2024-06-28 00:04:15,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 218 transitions, 2280 flow [2024-06-28 00:04:15,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 218 transitions, 2228 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-06-28 00:04:15,946 INFO L231 Difference]: Finished difference. Result has 246 places, 207 transitions, 1870 flow [2024-06-28 00:04:15,946 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1776, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1870, PETRI_PLACES=246, PETRI_TRANSITIONS=207} [2024-06-28 00:04:15,946 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 215 predicate places. [2024-06-28 00:04:15,946 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 207 transitions, 1870 flow [2024-06-28 00:04:15,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:15,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:15,947 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:15,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-28 00:04:15,947 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:04:15,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:15,947 INFO L85 PathProgramCache]: Analyzing trace with hash 1847307063, now seen corresponding path program 1 times [2024-06-28 00:04:15,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:15,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027707087] [2024-06-28 00:04:15,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:15,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:15,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:17,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:17,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:17,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027707087] [2024-06-28 00:04:17,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027707087] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:17,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:17,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:04:17,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427829774] [2024-06-28 00:04:17,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:17,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:04:17,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:17,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:04:17,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:04:17,708 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 00:04:17,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 207 transitions, 1870 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:17,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:17,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 00:04:17,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:18,094 INFO L124 PetriNetUnfolderBase]: 432/854 cut-off events. [2024-06-28 00:04:18,095 INFO L125 PetriNetUnfolderBase]: For 42956/42956 co-relation queries the response was YES. [2024-06-28 00:04:18,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4534 conditions, 854 events. 432/854 cut-off events. For 42956/42956 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 4751 event pairs, 48 based on Foata normal form. 2/855 useless extension candidates. Maximal degree in co-relation 4433. Up to 741 conditions per place. [2024-06-28 00:04:18,102 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 195 selfloop transitions, 24 changer transitions 0/223 dead transitions. [2024-06-28 00:04:18,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 223 transitions, 2360 flow [2024-06-28 00:04:18,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:04:18,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:04:18,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-28 00:04:18,103 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4034090909090909 [2024-06-28 00:04:18,103 INFO L175 Difference]: Start difference. First operand has 246 places, 207 transitions, 1870 flow. Second operand 11 states and 142 transitions. [2024-06-28 00:04:18,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 223 transitions, 2360 flow [2024-06-28 00:04:18,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 223 transitions, 2222 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-28 00:04:18,199 INFO L231 Difference]: Finished difference. Result has 248 places, 208 transitions, 1800 flow [2024-06-28 00:04:18,199 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1732, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1800, PETRI_PLACES=248, PETRI_TRANSITIONS=208} [2024-06-28 00:04:18,199 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 217 predicate places. [2024-06-28 00:04:18,199 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 208 transitions, 1800 flow [2024-06-28 00:04:18,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:18,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:18,200 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:18,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-28 00:04:18,200 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:04:18,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:18,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1960635657, now seen corresponding path program 2 times [2024-06-28 00:04:18,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:18,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737934159] [2024-06-28 00:04:18,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:18,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:18,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:19,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:19,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:19,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737934159] [2024-06-28 00:04:19,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737934159] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:19,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:19,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:04:19,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620150760] [2024-06-28 00:04:19,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:19,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:04:19,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:19,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:04:19,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:04:19,995 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 00:04:19,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 208 transitions, 1800 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:19,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:19,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 00:04:19,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:20,375 INFO L124 PetriNetUnfolderBase]: 440/870 cut-off events. [2024-06-28 00:04:20,375 INFO L125 PetriNetUnfolderBase]: For 42869/42869 co-relation queries the response was YES. [2024-06-28 00:04:20,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4476 conditions, 870 events. 440/870 cut-off events. For 42869/42869 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 4885 event pairs, 54 based on Foata normal form. 2/871 useless extension candidates. Maximal degree in co-relation 4374. Up to 743 conditions per place. [2024-06-28 00:04:20,383 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 197 selfloop transitions, 25 changer transitions 0/226 dead transitions. [2024-06-28 00:04:20,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 226 transitions, 2304 flow [2024-06-28 00:04:20,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:04:20,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:04:20,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-28 00:04:20,384 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-28 00:04:20,384 INFO L175 Difference]: Start difference. First operand has 248 places, 208 transitions, 1800 flow. Second operand 11 states and 144 transitions. [2024-06-28 00:04:20,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 226 transitions, 2304 flow [2024-06-28 00:04:20,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 226 transitions, 2191 flow, removed 9 selfloop flow, removed 11 redundant places. [2024-06-28 00:04:20,477 INFO L231 Difference]: Finished difference. Result has 249 places, 210 transitions, 1769 flow [2024-06-28 00:04:20,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1689, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1769, PETRI_PLACES=249, PETRI_TRANSITIONS=210} [2024-06-28 00:04:20,478 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 218 predicate places. [2024-06-28 00:04:20,478 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 210 transitions, 1769 flow [2024-06-28 00:04:20,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:20,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:20,478 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:20,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-28 00:04:20,478 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:04:20,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:20,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1460744679, now seen corresponding path program 3 times [2024-06-28 00:04:20,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:20,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128849203] [2024-06-28 00:04:20,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:20,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:20,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:22,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:22,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:22,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128849203] [2024-06-28 00:04:22,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128849203] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:22,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:22,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:04:22,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277265239] [2024-06-28 00:04:22,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:22,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:04:22,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:22,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:04:22,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:04:22,197 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 00:04:22,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 210 transitions, 1769 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:22,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:22,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 00:04:22,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:22,562 INFO L124 PetriNetUnfolderBase]: 444/878 cut-off events. [2024-06-28 00:04:22,562 INFO L125 PetriNetUnfolderBase]: For 44661/44661 co-relation queries the response was YES. [2024-06-28 00:04:22,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4425 conditions, 878 events. 444/878 cut-off events. For 44661/44661 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 4935 event pairs, 50 based on Foata normal form. 2/879 useless extension candidates. Maximal degree in co-relation 4323. Up to 729 conditions per place. [2024-06-28 00:04:22,573 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 199 selfloop transitions, 26 changer transitions 0/229 dead transitions. [2024-06-28 00:04:22,573 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 229 transitions, 2283 flow [2024-06-28 00:04:22,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:04:22,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:04:22,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 146 transitions. [2024-06-28 00:04:22,574 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4147727272727273 [2024-06-28 00:04:22,574 INFO L175 Difference]: Start difference. First operand has 249 places, 210 transitions, 1769 flow. Second operand 11 states and 146 transitions. [2024-06-28 00:04:22,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 229 transitions, 2283 flow [2024-06-28 00:04:22,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 229 transitions, 2227 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-28 00:04:22,669 INFO L231 Difference]: Finished difference. Result has 253 places, 212 transitions, 1801 flow [2024-06-28 00:04:22,670 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1713, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1801, PETRI_PLACES=253, PETRI_TRANSITIONS=212} [2024-06-28 00:04:22,670 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 222 predicate places. [2024-06-28 00:04:22,670 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 212 transitions, 1801 flow [2024-06-28 00:04:22,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:22,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:22,670 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:22,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-28 00:04:22,670 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:04:22,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:22,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1523489545, now seen corresponding path program 4 times [2024-06-28 00:04:22,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:22,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431422251] [2024-06-28 00:04:22,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:22,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:22,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:24,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:24,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:24,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431422251] [2024-06-28 00:04:24,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431422251] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:24,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:24,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:04:24,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325325559] [2024-06-28 00:04:24,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:24,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:04:24,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:24,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:04:24,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:04:24,466 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 00:04:24,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 212 transitions, 1801 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:24,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:24,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 00:04:24,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:24,846 INFO L124 PetriNetUnfolderBase]: 448/886 cut-off events. [2024-06-28 00:04:24,846 INFO L125 PetriNetUnfolderBase]: For 45080/45080 co-relation queries the response was YES. [2024-06-28 00:04:24,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4536 conditions, 886 events. 448/886 cut-off events. For 45080/45080 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 4988 event pairs, 50 based on Foata normal form. 2/887 useless extension candidates. Maximal degree in co-relation 4432. Up to 754 conditions per place. [2024-06-28 00:04:24,854 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 208 selfloop transitions, 21 changer transitions 0/233 dead transitions. [2024-06-28 00:04:24,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 233 transitions, 2333 flow [2024-06-28 00:04:24,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:04:24,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:04:24,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-28 00:04:24,855 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-28 00:04:24,855 INFO L175 Difference]: Start difference. First operand has 253 places, 212 transitions, 1801 flow. Second operand 11 states and 143 transitions. [2024-06-28 00:04:24,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 233 transitions, 2333 flow [2024-06-28 00:04:25,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 233 transitions, 2267 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-28 00:04:25,025 INFO L231 Difference]: Finished difference. Result has 257 places, 214 transitions, 1813 flow [2024-06-28 00:04:25,025 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1735, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1813, PETRI_PLACES=257, PETRI_TRANSITIONS=214} [2024-06-28 00:04:25,026 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 226 predicate places. [2024-06-28 00:04:25,026 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 214 transitions, 1813 flow [2024-06-28 00:04:25,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:25,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:25,026 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:25,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-28 00:04:25,026 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:04:25,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:25,026 INFO L85 PathProgramCache]: Analyzing trace with hash 258513267, now seen corresponding path program 1 times [2024-06-28 00:04:25,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:25,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190716752] [2024-06-28 00:04:25,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:25,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:25,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:26,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:26,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:26,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190716752] [2024-06-28 00:04:26,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190716752] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:26,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:26,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:04:26,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556979053] [2024-06-28 00:04:26,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:26,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:04:26,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:26,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:04:26,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:04:27,023 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:04:27,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 214 transitions, 1813 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:27,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:27,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:04:27,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:27,339 INFO L124 PetriNetUnfolderBase]: 451/891 cut-off events. [2024-06-28 00:04:27,339 INFO L125 PetriNetUnfolderBase]: For 44250/44250 co-relation queries the response was YES. [2024-06-28 00:04:27,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4596 conditions, 891 events. 451/891 cut-off events. For 44250/44250 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 5049 event pairs, 63 based on Foata normal form. 1/891 useless extension candidates. Maximal degree in co-relation 4491. Up to 756 conditions per place. [2024-06-28 00:04:27,347 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 187 selfloop transitions, 39 changer transitions 0/230 dead transitions. [2024-06-28 00:04:27,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 230 transitions, 2339 flow [2024-06-28 00:04:27,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:04:27,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:04:27,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 152 transitions. [2024-06-28 00:04:27,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4318181818181818 [2024-06-28 00:04:27,348 INFO L175 Difference]: Start difference. First operand has 257 places, 214 transitions, 1813 flow. Second operand 11 states and 152 transitions. [2024-06-28 00:04:27,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 230 transitions, 2339 flow [2024-06-28 00:04:27,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 230 transitions, 2279 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-28 00:04:27,501 INFO L231 Difference]: Finished difference. Result has 260 places, 216 transitions, 1880 flow [2024-06-28 00:04:27,502 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1753, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1880, PETRI_PLACES=260, PETRI_TRANSITIONS=216} [2024-06-28 00:04:27,502 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 229 predicate places. [2024-06-28 00:04:27,502 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 216 transitions, 1880 flow [2024-06-28 00:04:27,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:27,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:27,502 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:27,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-28 00:04:27,502 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:04:27,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:27,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1327089177, now seen corresponding path program 5 times [2024-06-28 00:04:27,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:27,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812991642] [2024-06-28 00:04:27,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:27,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:27,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:29,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:29,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:29,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812991642] [2024-06-28 00:04:29,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812991642] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:29,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:29,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:04:29,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021167642] [2024-06-28 00:04:29,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:29,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:04:29,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:29,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:04:29,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:04:29,662 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 00:04:29,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 216 transitions, 1880 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:29,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:29,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 00:04:29,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:30,198 INFO L124 PetriNetUnfolderBase]: 455/898 cut-off events. [2024-06-28 00:04:30,198 INFO L125 PetriNetUnfolderBase]: For 48300/48300 co-relation queries the response was YES. [2024-06-28 00:04:30,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4678 conditions, 898 events. 455/898 cut-off events. For 48300/48300 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 5079 event pairs, 53 based on Foata normal form. 2/899 useless extension candidates. Maximal degree in co-relation 4572. Up to 750 conditions per place. [2024-06-28 00:04:30,207 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 182 selfloop transitions, 45 changer transitions 0/231 dead transitions. [2024-06-28 00:04:30,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 231 transitions, 2388 flow [2024-06-28 00:04:30,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:04:30,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:04:30,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-28 00:04:30,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-28 00:04:30,208 INFO L175 Difference]: Start difference. First operand has 260 places, 216 transitions, 1880 flow. Second operand 11 states and 144 transitions. [2024-06-28 00:04:30,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 231 transitions, 2388 flow [2024-06-28 00:04:30,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 231 transitions, 2277 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-28 00:04:30,359 INFO L231 Difference]: Finished difference. Result has 262 places, 217 transitions, 1885 flow [2024-06-28 00:04:30,360 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1769, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1885, PETRI_PLACES=262, PETRI_TRANSITIONS=217} [2024-06-28 00:04:30,360 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 231 predicate places. [2024-06-28 00:04:30,360 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 217 transitions, 1885 flow [2024-06-28 00:04:30,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:30,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:30,360 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:30,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-28 00:04:30,361 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:04:30,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:30,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1022822555, now seen corresponding path program 6 times [2024-06-28 00:04:30,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:30,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775386273] [2024-06-28 00:04:30,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:30,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:30,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:32,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:32,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:32,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775386273] [2024-06-28 00:04:32,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775386273] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:32,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:32,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:04:32,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635403801] [2024-06-28 00:04:32,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:32,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:04:32,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:32,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:04:32,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:04:32,343 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 00:04:32,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 217 transitions, 1885 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:32,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:32,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 00:04:32,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:32,665 INFO L124 PetriNetUnfolderBase]: 459/908 cut-off events. [2024-06-28 00:04:32,666 INFO L125 PetriNetUnfolderBase]: For 50291/50291 co-relation queries the response was YES. [2024-06-28 00:04:32,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4736 conditions, 908 events. 459/908 cut-off events. For 50291/50291 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 5163 event pairs, 59 based on Foata normal form. 2/909 useless extension candidates. Maximal degree in co-relation 4629. Up to 767 conditions per place. [2024-06-28 00:04:32,673 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 190 selfloop transitions, 38 changer transitions 0/232 dead transitions. [2024-06-28 00:04:32,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 232 transitions, 2397 flow [2024-06-28 00:04:32,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:04:32,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:04:32,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-06-28 00:04:32,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4119318181818182 [2024-06-28 00:04:32,674 INFO L175 Difference]: Start difference. First operand has 262 places, 217 transitions, 1885 flow. Second operand 11 states and 145 transitions. [2024-06-28 00:04:32,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 232 transitions, 2397 flow [2024-06-28 00:04:32,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 232 transitions, 2291 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-28 00:04:32,823 INFO L231 Difference]: Finished difference. Result has 264 places, 218 transitions, 1883 flow [2024-06-28 00:04:32,823 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1779, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1883, PETRI_PLACES=264, PETRI_TRANSITIONS=218} [2024-06-28 00:04:32,823 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 233 predicate places. [2024-06-28 00:04:32,823 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 218 transitions, 1883 flow [2024-06-28 00:04:32,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:32,824 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:32,824 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:32,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-28 00:04:32,824 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:04:32,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:32,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1022644925, now seen corresponding path program 7 times [2024-06-28 00:04:32,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:32,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540971009] [2024-06-28 00:04:32,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:32,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:32,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:34,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:34,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:34,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540971009] [2024-06-28 00:04:34,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540971009] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:34,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:34,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:04:34,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687509540] [2024-06-28 00:04:34,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:34,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:04:34,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:34,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:04:34,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:04:34,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 00:04:34,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 218 transitions, 1883 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:34,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:34,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 00:04:34,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:35,308 INFO L124 PetriNetUnfolderBase]: 467/924 cut-off events. [2024-06-28 00:04:35,308 INFO L125 PetriNetUnfolderBase]: For 51702/51702 co-relation queries the response was YES. [2024-06-28 00:04:35,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4792 conditions, 924 events. 467/924 cut-off events. For 51702/51702 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 5279 event pairs, 53 based on Foata normal form. 2/925 useless extension candidates. Maximal degree in co-relation 4684. Up to 754 conditions per place. [2024-06-28 00:04:35,316 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 187 selfloop transitions, 44 changer transitions 0/235 dead transitions. [2024-06-28 00:04:35,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 235 transitions, 2409 flow [2024-06-28 00:04:35,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:04:35,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:04:35,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 146 transitions. [2024-06-28 00:04:35,317 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4147727272727273 [2024-06-28 00:04:35,317 INFO L175 Difference]: Start difference. First operand has 264 places, 218 transitions, 1883 flow. Second operand 11 states and 146 transitions. [2024-06-28 00:04:35,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 235 transitions, 2409 flow [2024-06-28 00:04:35,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 235 transitions, 2315 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-28 00:04:35,439 INFO L231 Difference]: Finished difference. Result has 267 places, 220 transitions, 1919 flow [2024-06-28 00:04:35,439 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1789, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1919, PETRI_PLACES=267, PETRI_TRANSITIONS=220} [2024-06-28 00:04:35,439 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 236 predicate places. [2024-06-28 00:04:35,440 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 220 transitions, 1919 flow [2024-06-28 00:04:35,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:35,440 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:35,440 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:35,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-28 00:04:35,440 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:04:35,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:35,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1816934459, now seen corresponding path program 8 times [2024-06-28 00:04:35,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:35,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578936475] [2024-06-28 00:04:35,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:35,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:35,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:37,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:37,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:37,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578936475] [2024-06-28 00:04:37,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578936475] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:37,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:37,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:04:37,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231236017] [2024-06-28 00:04:37,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:37,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:04:37,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:37,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:04:37,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:04:37,297 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 00:04:37,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 220 transitions, 1919 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:37,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:37,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 00:04:37,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:37,936 INFO L124 PetriNetUnfolderBase]: 471/930 cut-off events. [2024-06-28 00:04:37,936 INFO L125 PetriNetUnfolderBase]: For 52990/52990 co-relation queries the response was YES. [2024-06-28 00:04:37,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4875 conditions, 930 events. 471/930 cut-off events. For 52990/52990 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 5308 event pairs, 61 based on Foata normal form. 2/931 useless extension candidates. Maximal degree in co-relation 4765. Up to 782 conditions per place. [2024-06-28 00:04:37,946 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 191 selfloop transitions, 40 changer transitions 0/235 dead transitions. [2024-06-28 00:04:37,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 235 transitions, 2441 flow [2024-06-28 00:04:37,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:04:37,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:04:37,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 146 transitions. [2024-06-28 00:04:37,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4147727272727273 [2024-06-28 00:04:37,948 INFO L175 Difference]: Start difference. First operand has 267 places, 220 transitions, 1919 flow. Second operand 11 states and 146 transitions. [2024-06-28 00:04:37,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 235 transitions, 2441 flow [2024-06-28 00:04:38,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 235 transitions, 2339 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-28 00:04:38,100 INFO L231 Difference]: Finished difference. Result has 270 places, 221 transitions, 1929 flow [2024-06-28 00:04:38,100 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1817, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1929, PETRI_PLACES=270, PETRI_TRANSITIONS=221} [2024-06-28 00:04:38,100 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 239 predicate places. [2024-06-28 00:04:38,101 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 221 transitions, 1929 flow [2024-06-28 00:04:38,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:38,101 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:38,101 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:38,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-28 00:04:38,101 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:04:38,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:38,101 INFO L85 PathProgramCache]: Analyzing trace with hash 2068257847, now seen corresponding path program 9 times [2024-06-28 00:04:38,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:38,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747680192] [2024-06-28 00:04:38,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:38,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:38,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:40,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:40,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:40,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747680192] [2024-06-28 00:04:40,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747680192] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:40,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:40,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:04:40,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032697105] [2024-06-28 00:04:40,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:40,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:04:40,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:40,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:04:40,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:04:40,274 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 00:04:40,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 221 transitions, 1929 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:40,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:40,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 00:04:40,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:40,878 INFO L124 PetriNetUnfolderBase]: 479/946 cut-off events. [2024-06-28 00:04:40,878 INFO L125 PetriNetUnfolderBase]: For 54313/54313 co-relation queries the response was YES. [2024-06-28 00:04:40,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4943 conditions, 946 events. 479/946 cut-off events. For 54313/54313 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 5443 event pairs, 63 based on Foata normal form. 2/947 useless extension candidates. Maximal degree in co-relation 4832. Up to 784 conditions per place. [2024-06-28 00:04:40,887 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 193 selfloop transitions, 41 changer transitions 0/238 dead transitions. [2024-06-28 00:04:40,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 238 transitions, 2467 flow [2024-06-28 00:04:40,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:04:40,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:04:40,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 148 transitions. [2024-06-28 00:04:40,888 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42045454545454547 [2024-06-28 00:04:40,889 INFO L175 Difference]: Start difference. First operand has 270 places, 221 transitions, 1929 flow. Second operand 11 states and 148 transitions. [2024-06-28 00:04:40,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 238 transitions, 2467 flow [2024-06-28 00:04:41,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 238 transitions, 2365 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-28 00:04:41,047 INFO L231 Difference]: Finished difference. Result has 273 places, 223 transitions, 1955 flow [2024-06-28 00:04:41,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1827, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1955, PETRI_PLACES=273, PETRI_TRANSITIONS=223} [2024-06-28 00:04:41,047 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 242 predicate places. [2024-06-28 00:04:41,047 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 223 transitions, 1955 flow [2024-06-28 00:04:41,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:41,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:41,047 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:41,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-28 00:04:41,048 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:04:41,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:41,048 INFO L85 PathProgramCache]: Analyzing trace with hash 2063673877, now seen corresponding path program 10 times [2024-06-28 00:04:41,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:41,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554454240] [2024-06-28 00:04:41,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:41,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:41,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:43,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:43,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:43,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554454240] [2024-06-28 00:04:43,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554454240] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:43,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:43,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:04:43,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127331059] [2024-06-28 00:04:43,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:43,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:04:43,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:43,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:04:43,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:04:43,679 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 00:04:43,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 223 transitions, 1955 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:43,680 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:43,680 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 00:04:43,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:44,106 INFO L124 PetriNetUnfolderBase]: 483/954 cut-off events. [2024-06-28 00:04:44,107 INFO L125 PetriNetUnfolderBase]: For 55710/55710 co-relation queries the response was YES. [2024-06-28 00:04:44,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5012 conditions, 954 events. 483/954 cut-off events. For 55710/55710 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 5495 event pairs, 63 based on Foata normal form. 2/955 useless extension candidates. Maximal degree in co-relation 4899. Up to 744 conditions per place. [2024-06-28 00:04:44,122 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 192 selfloop transitions, 45 changer transitions 0/241 dead transitions. [2024-06-28 00:04:44,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 241 transitions, 2507 flow [2024-06-28 00:04:44,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:04:44,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:04:44,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 148 transitions. [2024-06-28 00:04:44,126 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42045454545454547 [2024-06-28 00:04:44,126 INFO L175 Difference]: Start difference. First operand has 273 places, 223 transitions, 1955 flow. Second operand 11 states and 148 transitions. [2024-06-28 00:04:44,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 241 transitions, 2507 flow [2024-06-28 00:04:44,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 241 transitions, 2403 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-28 00:04:44,304 INFO L231 Difference]: Finished difference. Result has 277 places, 225 transitions, 2001 flow [2024-06-28 00:04:44,305 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1851, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2001, PETRI_PLACES=277, PETRI_TRANSITIONS=225} [2024-06-28 00:04:44,305 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 246 predicate places. [2024-06-28 00:04:44,305 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 225 transitions, 2001 flow [2024-06-28 00:04:44,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:44,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:44,305 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:44,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-28 00:04:44,305 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:04:44,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:44,306 INFO L85 PathProgramCache]: Analyzing trace with hash 856595719, now seen corresponding path program 2 times [2024-06-28 00:04:44,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:44,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724571076] [2024-06-28 00:04:44,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:44,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:44,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:46,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:46,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:46,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724571076] [2024-06-28 00:04:46,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724571076] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:46,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:46,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:04:46,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013164064] [2024-06-28 00:04:46,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:46,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:04:46,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:46,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:04:46,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:04:46,599 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:04:46,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 225 transitions, 2001 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:46,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:46,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:04:46,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:47,233 INFO L124 PetriNetUnfolderBase]: 486/961 cut-off events. [2024-06-28 00:04:47,233 INFO L125 PetriNetUnfolderBase]: For 53507/53507 co-relation queries the response was YES. [2024-06-28 00:04:47,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5111 conditions, 961 events. 486/961 cut-off events. For 53507/53507 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 5536 event pairs, 65 based on Foata normal form. 1/961 useless extension candidates. Maximal degree in co-relation 4996. Up to 748 conditions per place. [2024-06-28 00:04:47,241 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 174 selfloop transitions, 61 changer transitions 0/239 dead transitions. [2024-06-28 00:04:47,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 239 transitions, 2543 flow [2024-06-28 00:04:47,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:04:47,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:04:47,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 157 transitions. [2024-06-28 00:04:47,242 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4460227272727273 [2024-06-28 00:04:47,243 INFO L175 Difference]: Start difference. First operand has 277 places, 225 transitions, 2001 flow. Second operand 11 states and 157 transitions. [2024-06-28 00:04:47,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 239 transitions, 2543 flow [2024-06-28 00:04:47,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 239 transitions, 2419 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-28 00:04:47,455 INFO L231 Difference]: Finished difference. Result has 279 places, 227 transitions, 2052 flow [2024-06-28 00:04:47,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1877, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2052, PETRI_PLACES=279, PETRI_TRANSITIONS=227} [2024-06-28 00:04:47,455 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 248 predicate places. [2024-06-28 00:04:47,456 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 227 transitions, 2052 flow [2024-06-28 00:04:47,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:47,456 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:47,456 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:47,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-28 00:04:47,456 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:04:47,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:47,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1318511353, now seen corresponding path program 3 times [2024-06-28 00:04:47,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:47,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189537210] [2024-06-28 00:04:47,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:47,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:47,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:49,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:49,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:49,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189537210] [2024-06-28 00:04:49,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189537210] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:49,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:49,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:04:49,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589009613] [2024-06-28 00:04:49,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:49,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:04:49,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:49,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:04:49,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:04:49,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:04:49,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 227 transitions, 2052 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:49,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:49,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:04:49,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:50,149 INFO L124 PetriNetUnfolderBase]: 489/966 cut-off events. [2024-06-28 00:04:50,149 INFO L125 PetriNetUnfolderBase]: For 54451/54451 co-relation queries the response was YES. [2024-06-28 00:04:50,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5137 conditions, 966 events. 489/966 cut-off events. For 54451/54451 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 5584 event pairs, 65 based on Foata normal form. 1/966 useless extension candidates. Maximal degree in co-relation 5023. Up to 801 conditions per place. [2024-06-28 00:04:50,158 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 183 selfloop transitions, 54 changer transitions 0/241 dead transitions. [2024-06-28 00:04:50,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 241 transitions, 2602 flow [2024-06-28 00:04:50,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:04:50,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:04:50,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 155 transitions. [2024-06-28 00:04:50,159 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4403409090909091 [2024-06-28 00:04:50,160 INFO L175 Difference]: Start difference. First operand has 279 places, 227 transitions, 2052 flow. Second operand 11 states and 155 transitions. [2024-06-28 00:04:50,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 241 transitions, 2602 flow [2024-06-28 00:04:50,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 241 transitions, 2443 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-28 00:04:50,321 INFO L231 Difference]: Finished difference. Result has 281 places, 229 transitions, 2058 flow [2024-06-28 00:04:50,321 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1893, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2058, PETRI_PLACES=281, PETRI_TRANSITIONS=229} [2024-06-28 00:04:50,321 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 250 predicate places. [2024-06-28 00:04:50,321 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 229 transitions, 2058 flow [2024-06-28 00:04:50,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:50,322 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:50,322 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:50,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-28 00:04:50,322 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:04:50,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:50,323 INFO L85 PathProgramCache]: Analyzing trace with hash -1327082233, now seen corresponding path program 4 times [2024-06-28 00:04:50,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:50,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626133634] [2024-06-28 00:04:50,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:50,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:50,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:52,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:52,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:52,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626133634] [2024-06-28 00:04:52,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626133634] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:52,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:52,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:04:52,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185590341] [2024-06-28 00:04:52,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:52,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:04:52,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:52,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:04:52,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:04:52,220 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:04:52,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 229 transitions, 2058 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:52,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:52,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:04:52,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:52,751 INFO L124 PetriNetUnfolderBase]: 492/971 cut-off events. [2024-06-28 00:04:52,751 INFO L125 PetriNetUnfolderBase]: For 55596/55596 co-relation queries the response was YES. [2024-06-28 00:04:52,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5179 conditions, 971 events. 492/971 cut-off events. For 55596/55596 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 5607 event pairs, 65 based on Foata normal form. 1/971 useless extension candidates. Maximal degree in co-relation 5064. Up to 758 conditions per place. [2024-06-28 00:04:52,760 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 170 selfloop transitions, 69 changer transitions 0/243 dead transitions. [2024-06-28 00:04:52,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 243 transitions, 2616 flow [2024-06-28 00:04:52,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:04:52,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:04:52,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 155 transitions. [2024-06-28 00:04:52,761 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4403409090909091 [2024-06-28 00:04:52,761 INFO L175 Difference]: Start difference. First operand has 281 places, 229 transitions, 2058 flow. Second operand 11 states and 155 transitions. [2024-06-28 00:04:52,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 243 transitions, 2616 flow [2024-06-28 00:04:52,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 243 transitions, 2467 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-06-28 00:04:52,923 INFO L231 Difference]: Finished difference. Result has 283 places, 231 transitions, 2108 flow [2024-06-28 00:04:52,923 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1909, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2108, PETRI_PLACES=283, PETRI_TRANSITIONS=231} [2024-06-28 00:04:52,924 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 252 predicate places. [2024-06-28 00:04:52,924 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 231 transitions, 2108 flow [2024-06-28 00:04:52,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:52,924 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:52,924 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:52,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-28 00:04:52,925 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:04:52,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:52,925 INFO L85 PathProgramCache]: Analyzing trace with hash 1630883317, now seen corresponding path program 5 times [2024-06-28 00:04:52,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:52,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477210866] [2024-06-28 00:04:52,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:52,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:52,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:55,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:55,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:55,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477210866] [2024-06-28 00:04:55,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477210866] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:55,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:55,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:04:55,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087159646] [2024-06-28 00:04:55,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:55,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:04:55,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:55,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:04:55,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:04:55,231 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:04:55,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 231 transitions, 2108 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:55,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:55,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:04:55,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:55,787 INFO L124 PetriNetUnfolderBase]: 495/976 cut-off events. [2024-06-28 00:04:55,787 INFO L125 PetriNetUnfolderBase]: For 56957/56957 co-relation queries the response was YES. [2024-06-28 00:04:55,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5265 conditions, 976 events. 495/976 cut-off events. For 56957/56957 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 5646 event pairs, 67 based on Foata normal form. 1/976 useless extension candidates. Maximal degree in co-relation 5149. Up to 763 conditions per place. [2024-06-28 00:04:55,796 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 177 selfloop transitions, 64 changer transitions 0/245 dead transitions. [2024-06-28 00:04:55,796 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 245 transitions, 2674 flow [2024-06-28 00:04:55,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:04:55,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:04:55,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 156 transitions. [2024-06-28 00:04:55,797 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4431818181818182 [2024-06-28 00:04:55,797 INFO L175 Difference]: Start difference. First operand has 283 places, 231 transitions, 2108 flow. Second operand 11 states and 156 transitions. [2024-06-28 00:04:55,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 245 transitions, 2674 flow [2024-06-28 00:04:55,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 245 transitions, 2491 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-28 00:04:55,984 INFO L231 Difference]: Finished difference. Result has 285 places, 233 transitions, 2118 flow [2024-06-28 00:04:55,984 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1925, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2118, PETRI_PLACES=285, PETRI_TRANSITIONS=233} [2024-06-28 00:04:55,984 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 254 predicate places. [2024-06-28 00:04:55,984 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 233 transitions, 2118 flow [2024-06-28 00:04:55,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:55,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:55,985 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:55,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-28 00:04:55,985 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:04:55,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:55,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1326851593, now seen corresponding path program 6 times [2024-06-28 00:04:55,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:55,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019220410] [2024-06-28 00:04:55,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:55,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:56,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:57,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:57,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:57,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019220410] [2024-06-28 00:04:57,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019220410] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:57,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:57,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:04:57,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533627391] [2024-06-28 00:04:57,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:57,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:04:57,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:57,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:04:57,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:04:58,022 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:04:58,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 233 transitions, 2118 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:58,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:58,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:04:58,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:58,419 INFO L124 PetriNetUnfolderBase]: 498/981 cut-off events. [2024-06-28 00:04:58,420 INFO L125 PetriNetUnfolderBase]: For 58294/58294 co-relation queries the response was YES. [2024-06-28 00:04:58,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5311 conditions, 981 events. 498/981 cut-off events. For 58294/58294 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 5650 event pairs, 67 based on Foata normal form. 1/981 useless extension candidates. Maximal degree in co-relation 5194. Up to 768 conditions per place. [2024-06-28 00:04:58,428 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 167 selfloop transitions, 76 changer transitions 0/247 dead transitions. [2024-06-28 00:04:58,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 247 transitions, 2692 flow [2024-06-28 00:04:58,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:04:58,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:04:58,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 154 transitions. [2024-06-28 00:04:58,429 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-28 00:04:58,429 INFO L175 Difference]: Start difference. First operand has 285 places, 233 transitions, 2118 flow. Second operand 11 states and 154 transitions. [2024-06-28 00:04:58,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 247 transitions, 2692 flow [2024-06-28 00:04:58,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 247 transitions, 2515 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-06-28 00:04:58,584 INFO L231 Difference]: Finished difference. Result has 287 places, 235 transitions, 2162 flow [2024-06-28 00:04:58,584 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1941, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2162, PETRI_PLACES=287, PETRI_TRANSITIONS=235} [2024-06-28 00:04:58,585 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 256 predicate places. [2024-06-28 00:04:58,585 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 235 transitions, 2162 flow [2024-06-28 00:04:58,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:58,585 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:58,585 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:58,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-28 00:04:58,585 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:04:58,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:58,586 INFO L85 PathProgramCache]: Analyzing trace with hash -182129463, now seen corresponding path program 11 times [2024-06-28 00:04:58,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:58,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746319747] [2024-06-28 00:04:58,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:58,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:58,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:59,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:59,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:59,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746319747] [2024-06-28 00:04:59,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746319747] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:59,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:59,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:04:59,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977798119] [2024-06-28 00:04:59,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:59,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:04:59,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:59,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:04:59,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:05:00,060 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 00:05:00,060 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 235 transitions, 2162 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:00,060 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:00,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 00:05:00,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:00,445 INFO L124 PetriNetUnfolderBase]: 502/990 cut-off events. [2024-06-28 00:05:00,445 INFO L125 PetriNetUnfolderBase]: For 63735/63735 co-relation queries the response was YES. [2024-06-28 00:05:00,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5398 conditions, 990 events. 502/990 cut-off events. For 63735/63735 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 5739 event pairs, 69 based on Foata normal form. 2/991 useless extension candidates. Maximal degree in co-relation 5280. Up to 856 conditions per place. [2024-06-28 00:05:00,453 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 231 selfloop transitions, 22 changer transitions 0/257 dead transitions. [2024-06-28 00:05:00,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 257 transitions, 2762 flow [2024-06-28 00:05:00,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:05:00,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:05:00,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-28 00:05:00,454 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-28 00:05:00,454 INFO L175 Difference]: Start difference. First operand has 287 places, 235 transitions, 2162 flow. Second operand 11 states and 143 transitions. [2024-06-28 00:05:00,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 257 transitions, 2762 flow [2024-06-28 00:05:00,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 257 transitions, 2557 flow, removed 28 selfloop flow, removed 9 redundant places. [2024-06-28 00:05:00,643 INFO L231 Difference]: Finished difference. Result has 290 places, 237 transitions, 2055 flow [2024-06-28 00:05:00,643 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1957, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2055, PETRI_PLACES=290, PETRI_TRANSITIONS=237} [2024-06-28 00:05:00,644 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 259 predicate places. [2024-06-28 00:05:00,644 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 237 transitions, 2055 flow [2024-06-28 00:05:00,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:00,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:00,644 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:00,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-28 00:05:00,644 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:05:00,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:00,645 INFO L85 PathProgramCache]: Analyzing trace with hash 691889455, now seen corresponding path program 12 times [2024-06-28 00:05:00,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:00,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784672741] [2024-06-28 00:05:00,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:00,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:00,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:02,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:02,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:02,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784672741] [2024-06-28 00:05:02,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784672741] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:02,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:02,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:05:02,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273995656] [2024-06-28 00:05:02,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:02,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:05:02,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:02,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:05:02,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:05:02,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 00:05:02,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 237 transitions, 2055 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:02,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:02,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 00:05:02,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:02,708 INFO L124 PetriNetUnfolderBase]: 517/1019 cut-off events. [2024-06-28 00:05:02,708 INFO L125 PetriNetUnfolderBase]: For 73986/73986 co-relation queries the response was YES. [2024-06-28 00:05:02,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5708 conditions, 1019 events. 517/1019 cut-off events. For 73986/73986 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 5923 event pairs, 77 based on Foata normal form. 2/1020 useless extension candidates. Maximal degree in co-relation 5588. Up to 869 conditions per place. [2024-06-28 00:05:02,717 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 230 selfloop transitions, 26 changer transitions 0/260 dead transitions. [2024-06-28 00:05:02,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 260 transitions, 2885 flow [2024-06-28 00:05:02,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:05:02,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:05:02,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-28 00:05:02,718 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41761363636363635 [2024-06-28 00:05:02,719 INFO L175 Difference]: Start difference. First operand has 290 places, 237 transitions, 2055 flow. Second operand 11 states and 147 transitions. [2024-06-28 00:05:02,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 260 transitions, 2885 flow [2024-06-28 00:05:02,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 260 transitions, 2805 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-28 00:05:02,912 INFO L231 Difference]: Finished difference. Result has 295 places, 241 transitions, 2132 flow [2024-06-28 00:05:02,912 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1975, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2132, PETRI_PLACES=295, PETRI_TRANSITIONS=241} [2024-06-28 00:05:02,913 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 264 predicate places. [2024-06-28 00:05:02,913 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 241 transitions, 2132 flow [2024-06-28 00:05:02,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:02,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:02,913 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:02,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-28 00:05:02,914 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:05:02,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:02,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1726974229, now seen corresponding path program 13 times [2024-06-28 00:05:02,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:02,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740014044] [2024-06-28 00:05:02,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:02,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:02,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:04,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:04,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:04,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740014044] [2024-06-28 00:05:04,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740014044] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:04,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:04,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:05:04,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824741476] [2024-06-28 00:05:04,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:04,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:05:04,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:04,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:05:04,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:05:04,625 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 00:05:04,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 241 transitions, 2132 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:04,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:04,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 00:05:04,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:05,073 INFO L124 PetriNetUnfolderBase]: 521/1027 cut-off events. [2024-06-28 00:05:05,073 INFO L125 PetriNetUnfolderBase]: For 76034/76034 co-relation queries the response was YES. [2024-06-28 00:05:05,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5800 conditions, 1027 events. 521/1027 cut-off events. For 76034/76034 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 5992 event pairs, 84 based on Foata normal form. 2/1028 useless extension candidates. Maximal degree in co-relation 5677. Up to 895 conditions per place. [2024-06-28 00:05:05,083 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 230 selfloop transitions, 26 changer transitions 0/260 dead transitions. [2024-06-28 00:05:05,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 260 transitions, 2911 flow [2024-06-28 00:05:05,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:05:05,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:05:05,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-06-28 00:05:05,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4119318181818182 [2024-06-28 00:05:05,084 INFO L175 Difference]: Start difference. First operand has 295 places, 241 transitions, 2132 flow. Second operand 11 states and 145 transitions. [2024-06-28 00:05:05,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 260 transitions, 2911 flow [2024-06-28 00:05:05,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 260 transitions, 2833 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-28 00:05:05,322 INFO L231 Difference]: Finished difference. Result has 300 places, 242 transitions, 2147 flow [2024-06-28 00:05:05,323 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2056, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2147, PETRI_PLACES=300, PETRI_TRANSITIONS=242} [2024-06-28 00:05:05,323 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 269 predicate places. [2024-06-28 00:05:05,323 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 242 transitions, 2147 flow [2024-06-28 00:05:05,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:05,323 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:05,324 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:05,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-28 00:05:05,324 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:05:05,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:05,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1726796599, now seen corresponding path program 14 times [2024-06-28 00:05:05,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:05,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519195554] [2024-06-28 00:05:05,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:05,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:05,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:06,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:06,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:06,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519195554] [2024-06-28 00:05:06,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519195554] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:06,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:06,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:05:06,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836696881] [2024-06-28 00:05:06,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:06,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:05:06,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:06,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:05:06,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:05:06,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 00:05:06,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 242 transitions, 2147 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:06,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:06,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 00:05:06,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:07,272 INFO L124 PetriNetUnfolderBase]: 518/1022 cut-off events. [2024-06-28 00:05:07,272 INFO L125 PetriNetUnfolderBase]: For 68205/68205 co-relation queries the response was YES. [2024-06-28 00:05:07,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5534 conditions, 1022 events. 518/1022 cut-off events. For 68205/68205 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 5964 event pairs, 88 based on Foata normal form. 2/1023 useless extension candidates. Maximal degree in co-relation 5409. Up to 907 conditions per place. [2024-06-28 00:05:07,283 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 229 selfloop transitions, 25 changer transitions 0/258 dead transitions. [2024-06-28 00:05:07,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 258 transitions, 2695 flow [2024-06-28 00:05:07,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:05:07,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:05:07,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-28 00:05:07,284 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4034090909090909 [2024-06-28 00:05:07,284 INFO L175 Difference]: Start difference. First operand has 300 places, 242 transitions, 2147 flow. Second operand 11 states and 142 transitions. [2024-06-28 00:05:07,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 258 transitions, 2695 flow [2024-06-28 00:05:07,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 258 transitions, 2585 flow, removed 31 selfloop flow, removed 9 redundant places. [2024-06-28 00:05:07,502 INFO L231 Difference]: Finished difference. Result has 302 places, 242 transitions, 2091 flow [2024-06-28 00:05:07,502 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2037, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2091, PETRI_PLACES=302, PETRI_TRANSITIONS=242} [2024-06-28 00:05:07,503 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 271 predicate places. [2024-06-28 00:05:07,503 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 242 transitions, 2091 flow [2024-06-28 00:05:07,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:07,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:07,503 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:07,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-28 00:05:07,503 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:05:07,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:07,503 INFO L85 PathProgramCache]: Analyzing trace with hash -710035443, now seen corresponding path program 15 times [2024-06-28 00:05:07,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:07,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268602176] [2024-06-28 00:05:07,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:07,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:07,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:08,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:08,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:08,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268602176] [2024-06-28 00:05:08,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268602176] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:08,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:08,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:05:08,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361653545] [2024-06-28 00:05:08,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:08,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:05:08,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:08,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:05:08,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:05:08,928 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 32 [2024-06-28 00:05:08,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 242 transitions, 2091 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) [2024-06-28 00:05:08,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:08,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 32 [2024-06-28 00:05:08,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:09,247 INFO L124 PetriNetUnfolderBase]: 483/990 cut-off events. [2024-06-28 00:05:09,247 INFO L125 PetriNetUnfolderBase]: For 70178/70181 co-relation queries the response was YES. [2024-06-28 00:05:09,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5219 conditions, 990 events. 483/990 cut-off events. For 70178/70181 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 5961 event pairs, 25 based on Foata normal form. 4/992 useless extension candidates. Maximal degree in co-relation 5094. Up to 617 conditions per place. [2024-06-28 00:05:09,256 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 152 selfloop transitions, 34 changer transitions 0/261 dead transitions. [2024-06-28 00:05:09,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 261 transitions, 2555 flow [2024-06-28 00:05:09,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:05:09,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:05:09,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 145 transitions. [2024-06-28 00:05:09,257 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.453125 [2024-06-28 00:05:09,258 INFO L175 Difference]: Start difference. First operand has 302 places, 242 transitions, 2091 flow. Second operand 10 states and 145 transitions. [2024-06-28 00:05:09,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 261 transitions, 2555 flow [2024-06-28 00:05:09,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 261 transitions, 2507 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-28 00:05:09,468 INFO L231 Difference]: Finished difference. Result has 304 places, 244 transitions, 2187 flow [2024-06-28 00:05:09,468 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2043, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2187, PETRI_PLACES=304, PETRI_TRANSITIONS=244} [2024-06-28 00:05:09,468 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 273 predicate places. [2024-06-28 00:05:09,469 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 244 transitions, 2187 flow [2024-06-28 00:05:09,469 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) [2024-06-28 00:05:09,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:09,469 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:09,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-28 00:05:09,469 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:05:09,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:09,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1967630933, now seen corresponding path program 16 times [2024-06-28 00:05:09,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:09,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069128487] [2024-06-28 00:05:09,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:09,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:09,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:11,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:11,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:11,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069128487] [2024-06-28 00:05:11,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069128487] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:11,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:11,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:05:11,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021178388] [2024-06-28 00:05:11,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:11,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:05:11,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:11,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:05:11,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:05:11,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 00:05:11,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 244 transitions, 2187 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:11,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:11,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 00:05:11,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:11,607 INFO L124 PetriNetUnfolderBase]: 537/1057 cut-off events. [2024-06-28 00:05:11,607 INFO L125 PetriNetUnfolderBase]: For 81427/81427 co-relation queries the response was YES. [2024-06-28 00:05:11,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6061 conditions, 1057 events. 537/1057 cut-off events. For 81427/81427 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 6229 event pairs, 82 based on Foata normal form. 2/1054 useless extension candidates. Maximal degree in co-relation 5934. Up to 927 conditions per place. [2024-06-28 00:05:11,618 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 232 selfloop transitions, 25 changer transitions 0/261 dead transitions. [2024-06-28 00:05:11,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 261 transitions, 3007 flow [2024-06-28 00:05:11,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:05:11,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:05:11,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 134 transitions. [2024-06-28 00:05:11,619 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41875 [2024-06-28 00:05:11,619 INFO L175 Difference]: Start difference. First operand has 304 places, 244 transitions, 2187 flow. Second operand 10 states and 134 transitions. [2024-06-28 00:05:11,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 261 transitions, 3007 flow [2024-06-28 00:05:11,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 261 transitions, 2885 flow, removed 32 selfloop flow, removed 11 redundant places. [2024-06-28 00:05:11,901 INFO L231 Difference]: Finished difference. Result has 304 places, 247 transitions, 2217 flow [2024-06-28 00:05:11,902 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2079, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2217, PETRI_PLACES=304, PETRI_TRANSITIONS=247} [2024-06-28 00:05:11,902 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 273 predicate places. [2024-06-28 00:05:11,902 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 247 transitions, 2217 flow [2024-06-28 00:05:11,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:11,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:11,903 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:11,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-28 00:05:11,903 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:05:11,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:11,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1967808563, now seen corresponding path program 17 times [2024-06-28 00:05:11,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:11,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269167803] [2024-06-28 00:05:11,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:11,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:11,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:13,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:13,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:13,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269167803] [2024-06-28 00:05:13,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269167803] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:13,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:13,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:05:13,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500352946] [2024-06-28 00:05:13,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:13,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:05:13,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:13,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:05:13,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:05:13,686 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 00:05:13,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 247 transitions, 2217 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:13,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:13,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 00:05:13,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:14,077 INFO L124 PetriNetUnfolderBase]: 534/1052 cut-off events. [2024-06-28 00:05:14,077 INFO L125 PetriNetUnfolderBase]: For 65822/65822 co-relation queries the response was YES. [2024-06-28 00:05:14,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5661 conditions, 1052 events. 534/1052 cut-off events. For 65822/65822 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 6174 event pairs, 83 based on Foata normal form. 2/1049 useless extension candidates. Maximal degree in co-relation 5536. Up to 939 conditions per place. [2024-06-28 00:05:14,085 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 231 selfloop transitions, 24 changer transitions 0/259 dead transitions. [2024-06-28 00:05:14,086 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 259 transitions, 2757 flow [2024-06-28 00:05:14,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:05:14,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:05:14,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-28 00:05:14,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.409375 [2024-06-28 00:05:14,089 INFO L175 Difference]: Start difference. First operand has 304 places, 247 transitions, 2217 flow. Second operand 10 states and 131 transitions. [2024-06-28 00:05:14,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 259 transitions, 2757 flow [2024-06-28 00:05:14,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 259 transitions, 2659 flow, removed 34 selfloop flow, removed 6 redundant places. [2024-06-28 00:05:14,282 INFO L231 Difference]: Finished difference. Result has 308 places, 247 transitions, 2171 flow [2024-06-28 00:05:14,282 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2119, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2171, PETRI_PLACES=308, PETRI_TRANSITIONS=247} [2024-06-28 00:05:14,283 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 277 predicate places. [2024-06-28 00:05:14,283 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 247 transitions, 2171 flow [2024-06-28 00:05:14,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:14,283 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:14,283 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:14,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-28 00:05:14,283 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:05:14,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:14,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1963046963, now seen corresponding path program 18 times [2024-06-28 00:05:14,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:14,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505544359] [2024-06-28 00:05:14,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:14,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:14,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:16,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:16,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:16,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505544359] [2024-06-28 00:05:16,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505544359] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:16,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:16,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:05:16,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388048568] [2024-06-28 00:05:16,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:16,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:05:16,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:16,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:05:16,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:05:16,449 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 00:05:16,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 247 transitions, 2171 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:16,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:16,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 00:05:16,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:16,845 INFO L124 PetriNetUnfolderBase]: 538/1060 cut-off events. [2024-06-28 00:05:16,846 INFO L125 PetriNetUnfolderBase]: For 66575/66575 co-relation queries the response was YES. [2024-06-28 00:05:16,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5667 conditions, 1060 events. 538/1060 cut-off events. For 66575/66575 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 6237 event pairs, 81 based on Foata normal form. 2/1057 useless extension candidates. Maximal degree in co-relation 5540. Up to 911 conditions per place. [2024-06-28 00:05:16,856 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 233 selfloop transitions, 26 changer transitions 0/263 dead transitions. [2024-06-28 00:05:16,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 263 transitions, 2777 flow [2024-06-28 00:05:16,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:05:16,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:05:16,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-28 00:05:16,857 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-28 00:05:16,858 INFO L175 Difference]: Start difference. First operand has 308 places, 247 transitions, 2171 flow. Second operand 11 states and 143 transitions. [2024-06-28 00:05:16,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 263 transitions, 2777 flow [2024-06-28 00:05:17,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 263 transitions, 2731 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-28 00:05:17,078 INFO L231 Difference]: Finished difference. Result has 312 places, 249 transitions, 2245 flow [2024-06-28 00:05:17,079 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2125, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2245, PETRI_PLACES=312, PETRI_TRANSITIONS=249} [2024-06-28 00:05:17,079 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 281 predicate places. [2024-06-28 00:05:17,079 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 249 transitions, 2245 flow [2024-06-28 00:05:17,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:17,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:17,079 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:17,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-28 00:05:17,080 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:05:17,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:17,080 INFO L85 PathProgramCache]: Analyzing trace with hash -782491597, now seen corresponding path program 19 times [2024-06-28 00:05:17,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:17,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13478156] [2024-06-28 00:05:17,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:17,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:17,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:18,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:18,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:18,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13478156] [2024-06-28 00:05:18,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13478156] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:18,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:18,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:05:18,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885038181] [2024-06-28 00:05:18,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:18,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:05:18,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:18,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:05:18,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:05:18,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 00:05:18,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 249 transitions, 2245 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:18,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:18,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 00:05:18,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:19,137 INFO L124 PetriNetUnfolderBase]: 542/1068 cut-off events. [2024-06-28 00:05:19,137 INFO L125 PetriNetUnfolderBase]: For 68853/68853 co-relation queries the response was YES. [2024-06-28 00:05:19,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5822 conditions, 1068 events. 542/1068 cut-off events. For 68853/68853 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 6318 event pairs, 81 based on Foata normal form. 2/1065 useless extension candidates. Maximal degree in co-relation 5693. Up to 936 conditions per place. [2024-06-28 00:05:19,148 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 242 selfloop transitions, 21 changer transitions 0/267 dead transitions. [2024-06-28 00:05:19,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 267 transitions, 2869 flow [2024-06-28 00:05:19,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:05:19,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:05:19,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-28 00:05:19,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3977272727272727 [2024-06-28 00:05:19,149 INFO L175 Difference]: Start difference. First operand has 312 places, 249 transitions, 2245 flow. Second operand 11 states and 140 transitions. [2024-06-28 00:05:19,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 267 transitions, 2869 flow [2024-06-28 00:05:19,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 267 transitions, 2771 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-06-28 00:05:19,393 INFO L231 Difference]: Finished difference. Result has 316 places, 251 transitions, 2257 flow [2024-06-28 00:05:19,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2147, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2257, PETRI_PLACES=316, PETRI_TRANSITIONS=251} [2024-06-28 00:05:19,394 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 285 predicate places. [2024-06-28 00:05:19,394 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 251 transitions, 2257 flow [2024-06-28 00:05:19,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:19,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:19,394 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:19,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-28 00:05:19,395 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:05:19,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:19,395 INFO L85 PathProgramCache]: Analyzing trace with hash 294198089, now seen corresponding path program 20 times [2024-06-28 00:05:19,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:19,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258095428] [2024-06-28 00:05:19,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:19,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:19,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:21,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:21,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:21,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258095428] [2024-06-28 00:05:21,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258095428] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:21,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:21,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:05:21,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077656465] [2024-06-28 00:05:21,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:21,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:05:21,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:21,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:05:21,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:05:21,310 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 00:05:21,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 251 transitions, 2257 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:21,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:21,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 00:05:21,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:21,897 INFO L124 PetriNetUnfolderBase]: 557/1097 cut-off events. [2024-06-28 00:05:21,897 INFO L125 PetriNetUnfolderBase]: For 80249/80249 co-relation queries the response was YES. [2024-06-28 00:05:21,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6200 conditions, 1097 events. 557/1097 cut-off events. For 80249/80249 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 6505 event pairs, 90 based on Foata normal form. 2/1094 useless extension candidates. Maximal degree in co-relation 6070. Up to 940 conditions per place. [2024-06-28 00:05:21,910 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 226 selfloop transitions, 37 changer transitions 0/267 dead transitions. [2024-06-28 00:05:21,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 267 transitions, 3091 flow [2024-06-28 00:05:21,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:05:21,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:05:21,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 139 transitions. [2024-06-28 00:05:21,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.434375 [2024-06-28 00:05:21,911 INFO L175 Difference]: Start difference. First operand has 316 places, 251 transitions, 2257 flow. Second operand 10 states and 139 transitions. [2024-06-28 00:05:21,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 267 transitions, 3091 flow [2024-06-28 00:05:22,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 267 transitions, 2999 flow, removed 27 selfloop flow, removed 8 redundant places. [2024-06-28 00:05:22,159 INFO L231 Difference]: Finished difference. Result has 319 places, 254 transitions, 2339 flow [2024-06-28 00:05:22,159 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2165, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2339, PETRI_PLACES=319, PETRI_TRANSITIONS=254} [2024-06-28 00:05:22,160 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 288 predicate places. [2024-06-28 00:05:22,160 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 254 transitions, 2339 flow [2024-06-28 00:05:22,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:22,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:22,160 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:22,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-28 00:05:22,161 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:05:22,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:22,161 INFO L85 PathProgramCache]: Analyzing trace with hash 294375719, now seen corresponding path program 21 times [2024-06-28 00:05:22,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:22,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350326580] [2024-06-28 00:05:22,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:22,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:22,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:23,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:23,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:23,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350326580] [2024-06-28 00:05:23,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350326580] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:23,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:23,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:05:23,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260997861] [2024-06-28 00:05:23,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:23,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:05:23,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:23,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:05:23,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:05:24,141 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 00:05:24,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 254 transitions, 2339 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:24,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:24,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 00:05:24,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:24,760 INFO L124 PetriNetUnfolderBase]: 554/1092 cut-off events. [2024-06-28 00:05:24,760 INFO L125 PetriNetUnfolderBase]: For 72116/72116 co-relation queries the response was YES. [2024-06-28 00:05:24,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5926 conditions, 1092 events. 554/1092 cut-off events. For 72116/72116 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 6482 event pairs, 91 based on Foata normal form. 2/1089 useless extension candidates. Maximal degree in co-relation 5794. Up to 952 conditions per place. [2024-06-28 00:05:24,770 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 225 selfloop transitions, 36 changer transitions 0/265 dead transitions. [2024-06-28 00:05:24,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 265 transitions, 2887 flow [2024-06-28 00:05:24,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:05:24,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:05:24,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-28 00:05:24,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-28 00:05:24,771 INFO L175 Difference]: Start difference. First operand has 319 places, 254 transitions, 2339 flow. Second operand 11 states and 144 transitions. [2024-06-28 00:05:24,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 265 transitions, 2887 flow [2024-06-28 00:05:25,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 265 transitions, 2762 flow, removed 40 selfloop flow, removed 6 redundant places. [2024-06-28 00:05:25,170 INFO L231 Difference]: Finished difference. Result has 324 places, 254 transitions, 2290 flow [2024-06-28 00:05:25,171 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2214, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2290, PETRI_PLACES=324, PETRI_TRANSITIONS=254} [2024-06-28 00:05:25,171 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 293 predicate places. [2024-06-28 00:05:25,171 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 254 transitions, 2290 flow [2024-06-28 00:05:25,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:25,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:25,172 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:25,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-28 00:05:25,172 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:05:25,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:25,173 INFO L85 PathProgramCache]: Analyzing trace with hash 289614119, now seen corresponding path program 22 times [2024-06-28 00:05:25,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:25,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816532410] [2024-06-28 00:05:25,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:25,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:25,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:26,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:26,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:26,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816532410] [2024-06-28 00:05:26,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816532410] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:26,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:26,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:05:26,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395978263] [2024-06-28 00:05:26,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:26,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:05:26,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:26,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:05:26,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:05:27,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 00:05:27,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 254 transitions, 2290 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:27,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:27,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 00:05:27,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:27,563 INFO L124 PetriNetUnfolderBase]: 569/1121 cut-off events. [2024-06-28 00:05:27,564 INFO L125 PetriNetUnfolderBase]: For 83095/83095 co-relation queries the response was YES. [2024-06-28 00:05:27,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6308 conditions, 1121 events. 569/1121 cut-off events. For 83095/83095 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 6718 event pairs, 88 based on Foata normal form. 2/1118 useless extension candidates. Maximal degree in co-relation 6174. Up to 924 conditions per place. [2024-06-28 00:05:27,575 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 229 selfloop transitions, 39 changer transitions 0/272 dead transitions. [2024-06-28 00:05:27,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 272 transitions, 3166 flow [2024-06-28 00:05:27,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:05:27,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:05:27,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-28 00:05:27,576 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41761363636363635 [2024-06-28 00:05:27,576 INFO L175 Difference]: Start difference. First operand has 324 places, 254 transitions, 2290 flow. Second operand 11 states and 147 transitions. [2024-06-28 00:05:27,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 272 transitions, 3166 flow [2024-06-28 00:05:27,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 272 transitions, 3096 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-28 00:05:27,867 INFO L231 Difference]: Finished difference. Result has 328 places, 258 transitions, 2434 flow [2024-06-28 00:05:27,867 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2220, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2434, PETRI_PLACES=328, PETRI_TRANSITIONS=258} [2024-06-28 00:05:27,867 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 297 predicate places. [2024-06-28 00:05:27,868 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 258 transitions, 2434 flow [2024-06-28 00:05:27,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:27,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:27,868 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:27,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-28 00:05:27,868 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:05:27,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:27,868 INFO L85 PathProgramCache]: Analyzing trace with hash -647301833, now seen corresponding path program 23 times [2024-06-28 00:05:27,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:27,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027899971] [2024-06-28 00:05:27,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:27,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:27,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:29,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:29,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:29,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027899971] [2024-06-28 00:05:29,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027899971] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:29,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:29,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:05:29,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438756040] [2024-06-28 00:05:29,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:29,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:05:29,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:29,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:05:29,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:05:29,667 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 00:05:29,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 258 transitions, 2434 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:29,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:29,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 00:05:29,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:30,311 INFO L124 PetriNetUnfolderBase]: 573/1129 cut-off events. [2024-06-28 00:05:30,311 INFO L125 PetriNetUnfolderBase]: For 85997/85997 co-relation queries the response was YES. [2024-06-28 00:05:30,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6494 conditions, 1129 events. 573/1129 cut-off events. For 85997/85997 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 6771 event pairs, 94 based on Foata normal form. 2/1126 useless extension candidates. Maximal degree in co-relation 6357. Up to 989 conditions per place. [2024-06-28 00:05:30,323 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 229 selfloop transitions, 37 changer transitions 0/270 dead transitions. [2024-06-28 00:05:30,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 270 transitions, 3039 flow [2024-06-28 00:05:30,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:05:30,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:05:30,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-28 00:05:30,324 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-28 00:05:30,324 INFO L175 Difference]: Start difference. First operand has 328 places, 258 transitions, 2434 flow. Second operand 11 states and 143 transitions. [2024-06-28 00:05:30,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 270 transitions, 3039 flow [2024-06-28 00:05:30,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 270 transitions, 2920 flow, removed 38 selfloop flow, removed 6 redundant places. [2024-06-28 00:05:30,648 INFO L231 Difference]: Finished difference. Result has 333 places, 259 transitions, 2442 flow [2024-06-28 00:05:30,649 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2321, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2442, PETRI_PLACES=333, PETRI_TRANSITIONS=259} [2024-06-28 00:05:30,649 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 302 predicate places. [2024-06-28 00:05:30,649 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 259 transitions, 2442 flow [2024-06-28 00:05:30,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:30,650 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:30,650 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:30,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-28 00:05:30,650 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:05:30,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:30,651 INFO L85 PathProgramCache]: Analyzing trace with hash -2033355113, now seen corresponding path program 24 times [2024-06-28 00:05:30,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:30,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257583363] [2024-06-28 00:05:30,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:30,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:30,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:32,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:32,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:32,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257583363] [2024-06-28 00:05:32,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257583363] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:32,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:32,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:05:32,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721048839] [2024-06-28 00:05:32,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:32,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:05:32,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:32,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:05:32,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:05:32,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 00:05:32,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 259 transitions, 2442 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:32,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:32,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 00:05:32,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:33,019 INFO L124 PetriNetUnfolderBase]: 577/1137 cut-off events. [2024-06-28 00:05:33,019 INFO L125 PetriNetUnfolderBase]: For 86878/86878 co-relation queries the response was YES. [2024-06-28 00:05:33,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6518 conditions, 1137 events. 577/1137 cut-off events. For 86878/86878 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 6821 event pairs, 92 based on Foata normal form. 2/1134 useless extension candidates. Maximal degree in co-relation 6379. Up to 983 conditions per place. [2024-06-28 00:05:33,032 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 234 selfloop transitions, 35 changer transitions 0/273 dead transitions. [2024-06-28 00:05:33,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 273 transitions, 3251 flow [2024-06-28 00:05:33,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:05:33,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:05:33,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-06-28 00:05:33,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4119318181818182 [2024-06-28 00:05:33,033 INFO L175 Difference]: Start difference. First operand has 333 places, 259 transitions, 2442 flow. Second operand 11 states and 145 transitions. [2024-06-28 00:05:33,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 273 transitions, 3251 flow [2024-06-28 00:05:33,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 273 transitions, 3143 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-28 00:05:33,363 INFO L231 Difference]: Finished difference. Result has 335 places, 260 transitions, 2451 flow [2024-06-28 00:05:33,363 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2334, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2451, PETRI_PLACES=335, PETRI_TRANSITIONS=260} [2024-06-28 00:05:33,363 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 304 predicate places. [2024-06-28 00:05:33,363 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 260 transitions, 2451 flow [2024-06-28 00:05:33,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:33,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:33,364 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:33,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-28 00:05:33,364 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:05:33,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:33,364 INFO L85 PathProgramCache]: Analyzing trace with hash -2026921373, now seen corresponding path program 25 times [2024-06-28 00:05:33,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:33,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203988147] [2024-06-28 00:05:33,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:33,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:33,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:35,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:35,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:35,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203988147] [2024-06-28 00:05:35,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203988147] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:35,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:35,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:05:35,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823192717] [2024-06-28 00:05:35,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:35,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:05:35,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:35,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:05:35,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:05:35,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 00:05:35,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 260 transitions, 2451 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:35,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:35,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 00:05:35,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:35,909 INFO L124 PetriNetUnfolderBase]: 574/1132 cut-off events. [2024-06-28 00:05:35,909 INFO L125 PetriNetUnfolderBase]: For 77966/77966 co-relation queries the response was YES. [2024-06-28 00:05:35,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6218 conditions, 1132 events. 574/1132 cut-off events. For 77966/77966 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 6795 event pairs, 93 based on Foata normal form. 2/1129 useless extension candidates. Maximal degree in co-relation 6078. Up to 992 conditions per place. [2024-06-28 00:05:35,921 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 228 selfloop transitions, 39 changer transitions 0/271 dead transitions. [2024-06-28 00:05:35,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 271 transitions, 3011 flow [2024-06-28 00:05:35,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:05:35,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:05:35,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-28 00:05:35,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4034090909090909 [2024-06-28 00:05:35,922 INFO L175 Difference]: Start difference. First operand has 335 places, 260 transitions, 2451 flow. Second operand 11 states and 142 transitions. [2024-06-28 00:05:35,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 271 transitions, 3011 flow [2024-06-28 00:05:36,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 271 transitions, 2842 flow, removed 39 selfloop flow, removed 11 redundant places. [2024-06-28 00:05:36,233 INFO L231 Difference]: Finished difference. Result has 335 places, 260 transitions, 2364 flow [2024-06-28 00:05:36,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2282, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2364, PETRI_PLACES=335, PETRI_TRANSITIONS=260} [2024-06-28 00:05:36,233 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 304 predicate places. [2024-06-28 00:05:36,234 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 260 transitions, 2364 flow [2024-06-28 00:05:36,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:36,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:36,234 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:36,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-28 00:05:36,234 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:05:36,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:36,234 INFO L85 PathProgramCache]: Analyzing trace with hash -1441630157, now seen corresponding path program 26 times [2024-06-28 00:05:36,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:36,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187565540] [2024-06-28 00:05:36,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:36,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:36,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:37,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:37,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:37,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187565540] [2024-06-28 00:05:37,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187565540] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:37,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:37,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:05:37,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77425516] [2024-06-28 00:05:37,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:37,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:05:37,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:37,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:05:37,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:05:38,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 00:05:38,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 260 transitions, 2364 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:38,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:38,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 00:05:38,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:38,582 INFO L124 PetriNetUnfolderBase]: 578/1138 cut-off events. [2024-06-28 00:05:38,582 INFO L125 PetriNetUnfolderBase]: For 78776/78776 co-relation queries the response was YES. [2024-06-28 00:05:38,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6124 conditions, 1138 events. 578/1138 cut-off events. For 78776/78776 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 6838 event pairs, 97 based on Foata normal form. 2/1134 useless extension candidates. Maximal degree in co-relation 5986. Up to 898 conditions per place. [2024-06-28 00:05:38,604 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 190 selfloop transitions, 77 changer transitions 0/271 dead transitions. [2024-06-28 00:05:38,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 271 transitions, 2964 flow [2024-06-28 00:05:38,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:05:38,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:05:38,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 146 transitions. [2024-06-28 00:05:38,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4147727272727273 [2024-06-28 00:05:38,605 INFO L175 Difference]: Start difference. First operand has 335 places, 260 transitions, 2364 flow. Second operand 11 states and 146 transitions. [2024-06-28 00:05:38,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 271 transitions, 2964 flow [2024-06-28 00:05:39,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 271 transitions, 2886 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-28 00:05:39,031 INFO L231 Difference]: Finished difference. Result has 337 places, 261 transitions, 2490 flow [2024-06-28 00:05:39,031 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2286, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2490, PETRI_PLACES=337, PETRI_TRANSITIONS=261} [2024-06-28 00:05:39,032 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 306 predicate places. [2024-06-28 00:05:39,032 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 261 transitions, 2490 flow [2024-06-28 00:05:39,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:39,032 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:39,032 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:39,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-28 00:05:39,032 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:05:39,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:39,033 INFO L85 PathProgramCache]: Analyzing trace with hash -966035547, now seen corresponding path program 27 times [2024-06-28 00:05:39,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:39,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489864882] [2024-06-28 00:05:39,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:39,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:39,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:40,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:40,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:40,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489864882] [2024-06-28 00:05:40,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489864882] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:40,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:40,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:05:40,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872361598] [2024-06-28 00:05:40,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:40,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:05:40,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:40,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:05:40,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:05:41,069 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 00:05:41,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 261 transitions, 2490 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:41,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:41,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 00:05:41,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:41,677 INFO L124 PetriNetUnfolderBase]: 582/1148 cut-off events. [2024-06-28 00:05:41,677 INFO L125 PetriNetUnfolderBase]: For 81515/81515 co-relation queries the response was YES. [2024-06-28 00:05:41,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6327 conditions, 1148 events. 582/1148 cut-off events. For 81515/81515 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 6925 event pairs, 99 based on Foata normal form. 2/1144 useless extension candidates. Maximal degree in co-relation 6188. Up to 906 conditions per place. [2024-06-28 00:05:41,690 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 192 selfloop transitions, 76 changer transitions 0/272 dead transitions. [2024-06-28 00:05:41,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 272 transitions, 3094 flow [2024-06-28 00:05:41,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:05:41,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:05:41,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-28 00:05:41,691 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41761363636363635 [2024-06-28 00:05:41,691 INFO L175 Difference]: Start difference. First operand has 337 places, 261 transitions, 2490 flow. Second operand 11 states and 147 transitions. [2024-06-28 00:05:41,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 272 transitions, 3094 flow [2024-06-28 00:05:41,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 272 transitions, 2900 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-28 00:05:41,976 INFO L231 Difference]: Finished difference. Result has 339 places, 262 transitions, 2500 flow [2024-06-28 00:05:41,976 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2296, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2500, PETRI_PLACES=339, PETRI_TRANSITIONS=262} [2024-06-28 00:05:41,977 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 308 predicate places. [2024-06-28 00:05:41,977 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 262 transitions, 2500 flow [2024-06-28 00:05:41,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:41,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:41,977 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:41,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-28 00:05:41,978 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:05:41,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:41,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1669708937, now seen corresponding path program 28 times [2024-06-28 00:05:41,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:41,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982905473] [2024-06-28 00:05:41,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:41,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:42,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:43,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:43,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:43,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982905473] [2024-06-28 00:05:43,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982905473] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:43,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:43,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:05:43,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848151117] [2024-06-28 00:05:43,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:43,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:05:43,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:43,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:05:43,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:05:43,936 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 00:05:43,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 262 transitions, 2500 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:43,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:43,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 00:05:43,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:44,469 INFO L124 PetriNetUnfolderBase]: 590/1162 cut-off events. [2024-06-28 00:05:44,469 INFO L125 PetriNetUnfolderBase]: For 83263/83263 co-relation queries the response was YES. [2024-06-28 00:05:44,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6393 conditions, 1162 events. 590/1162 cut-off events. For 83263/83263 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 7009 event pairs, 97 based on Foata normal form. 2/1158 useless extension candidates. Maximal degree in co-relation 6253. Up to 902 conditions per place. [2024-06-28 00:05:44,481 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 193 selfloop transitions, 78 changer transitions 0/275 dead transitions. [2024-06-28 00:05:44,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 275 transitions, 3118 flow [2024-06-28 00:05:44,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:05:44,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:05:44,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 148 transitions. [2024-06-28 00:05:44,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42045454545454547 [2024-06-28 00:05:44,482 INFO L175 Difference]: Start difference. First operand has 339 places, 262 transitions, 2500 flow. Second operand 11 states and 148 transitions. [2024-06-28 00:05:44,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 275 transitions, 3118 flow [2024-06-28 00:05:44,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 275 transitions, 2924 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-06-28 00:05:44,809 INFO L231 Difference]: Finished difference. Result has 342 places, 264 transitions, 2528 flow [2024-06-28 00:05:44,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2306, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2528, PETRI_PLACES=342, PETRI_TRANSITIONS=264} [2024-06-28 00:05:44,809 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 311 predicate places. [2024-06-28 00:05:44,809 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 264 transitions, 2528 flow [2024-06-28 00:05:44,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:44,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:44,809 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:44,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-28 00:05:44,810 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:05:44,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:44,810 INFO L85 PathProgramCache]: Analyzing trace with hash 742047795, now seen corresponding path program 29 times [2024-06-28 00:05:44,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:44,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273652148] [2024-06-28 00:05:44,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:44,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:44,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:46,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:46,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:46,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273652148] [2024-06-28 00:05:46,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273652148] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:46,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:46,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:05:46,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009670749] [2024-06-28 00:05:46,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:46,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:05:46,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:46,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:05:46,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:05:46,792 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 00:05:46,792 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 264 transitions, 2528 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:46,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:46,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 00:05:46,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:47,361 INFO L124 PetriNetUnfolderBase]: 594/1172 cut-off events. [2024-06-28 00:05:47,361 INFO L125 PetriNetUnfolderBase]: For 85076/85076 co-relation queries the response was YES. [2024-06-28 00:05:47,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6472 conditions, 1172 events. 594/1172 cut-off events. For 85076/85076 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 7080 event pairs, 101 based on Foata normal form. 2/1168 useless extension candidates. Maximal degree in co-relation 6330. Up to 930 conditions per place. [2024-06-28 00:05:47,372 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 192 selfloop transitions, 79 changer transitions 0/275 dead transitions. [2024-06-28 00:05:47,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 275 transitions, 3142 flow [2024-06-28 00:05:47,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:05:47,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:05:47,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 137 transitions. [2024-06-28 00:05:47,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.428125 [2024-06-28 00:05:47,373 INFO L175 Difference]: Start difference. First operand has 342 places, 264 transitions, 2528 flow. Second operand 10 states and 137 transitions. [2024-06-28 00:05:47,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 275 transitions, 3142 flow [2024-06-28 00:05:47,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 275 transitions, 2948 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-28 00:05:47,733 INFO L231 Difference]: Finished difference. Result has 344 places, 265 transitions, 2548 flow [2024-06-28 00:05:47,733 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2334, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2548, PETRI_PLACES=344, PETRI_TRANSITIONS=265} [2024-06-28 00:05:47,733 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 313 predicate places. [2024-06-28 00:05:47,733 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 265 transitions, 2548 flow [2024-06-28 00:05:47,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:47,733 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:47,733 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:47,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-28 00:05:47,734 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:05:47,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:47,734 INFO L85 PathProgramCache]: Analyzing trace with hash 737401515, now seen corresponding path program 30 times [2024-06-28 00:05:47,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:47,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716063801] [2024-06-28 00:05:47,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:47,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:47,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:49,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:49,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:49,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716063801] [2024-06-28 00:05:49,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716063801] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:49,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:49,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:05:49,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649965137] [2024-06-28 00:05:49,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:49,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:05:49,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:49,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:05:49,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:05:49,684 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 00:05:49,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 265 transitions, 2548 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:49,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:49,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 00:05:49,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:50,291 INFO L124 PetriNetUnfolderBase]: 602/1186 cut-off events. [2024-06-28 00:05:50,291 INFO L125 PetriNetUnfolderBase]: For 86940/86940 co-relation queries the response was YES. [2024-06-28 00:05:50,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6548 conditions, 1186 events. 602/1186 cut-off events. For 86940/86940 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 7205 event pairs, 101 based on Foata normal form. 2/1182 useless extension candidates. Maximal degree in co-relation 6405. Up to 932 conditions per place. [2024-06-28 00:05:50,304 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 194 selfloop transitions, 80 changer transitions 0/278 dead transitions. [2024-06-28 00:05:50,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 278 transitions, 3178 flow [2024-06-28 00:05:50,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:05:50,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:05:50,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-28 00:05:50,305 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41761363636363635 [2024-06-28 00:05:50,305 INFO L175 Difference]: Start difference. First operand has 344 places, 265 transitions, 2548 flow. Second operand 11 states and 147 transitions. [2024-06-28 00:05:50,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 278 transitions, 3178 flow [2024-06-28 00:05:50,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 278 transitions, 2974 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-28 00:05:50,695 INFO L231 Difference]: Finished difference. Result has 348 places, 267 transitions, 2574 flow [2024-06-28 00:05:50,696 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2344, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2574, PETRI_PLACES=348, PETRI_TRANSITIONS=267} [2024-06-28 00:05:50,696 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 317 predicate places. [2024-06-28 00:05:50,696 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 267 transitions, 2574 flow [2024-06-28 00:05:50,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:50,696 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:50,696 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:50,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-28 00:05:50,696 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:05:50,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:50,697 INFO L85 PathProgramCache]: Analyzing trace with hash -128098671, now seen corresponding path program 31 times [2024-06-28 00:05:50,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:50,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459211081] [2024-06-28 00:05:50,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:50,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:50,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:52,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:52,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:52,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459211081] [2024-06-28 00:05:52,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459211081] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:52,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:52,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:05:52,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278667141] [2024-06-28 00:05:52,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:52,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:05:52,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:52,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:05:52,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:05:53,007 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 00:05:53,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 267 transitions, 2574 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:53,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:53,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 00:05:53,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:53,469 INFO L124 PetriNetUnfolderBase]: 610/1202 cut-off events. [2024-06-28 00:05:53,469 INFO L125 PetriNetUnfolderBase]: For 88807/88807 co-relation queries the response was YES. [2024-06-28 00:05:53,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6645 conditions, 1202 events. 610/1202 cut-off events. For 88807/88807 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 7331 event pairs, 101 based on Foata normal form. 2/1198 useless extension candidates. Maximal degree in co-relation 6500. Up to 877 conditions per place. [2024-06-28 00:05:53,482 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 193 selfloop transitions, 85 changer transitions 0/282 dead transitions. [2024-06-28 00:05:53,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 282 transitions, 3432 flow [2024-06-28 00:05:53,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:05:53,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:05:53,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 148 transitions. [2024-06-28 00:05:53,484 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42045454545454547 [2024-06-28 00:05:53,484 INFO L175 Difference]: Start difference. First operand has 348 places, 267 transitions, 2574 flow. Second operand 11 states and 148 transitions. [2024-06-28 00:05:53,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 282 transitions, 3432 flow [2024-06-28 00:05:53,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 282 transitions, 3226 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-06-28 00:05:53,876 INFO L231 Difference]: Finished difference. Result has 352 places, 269 transitions, 2608 flow [2024-06-28 00:05:53,876 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2368, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2608, PETRI_PLACES=352, PETRI_TRANSITIONS=269} [2024-06-28 00:05:53,876 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 321 predicate places. [2024-06-28 00:05:53,876 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 269 transitions, 2608 flow [2024-06-28 00:05:53,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:53,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:53,877 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:53,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-28 00:05:53,877 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:05:53,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:53,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1587706499, now seen corresponding path program 32 times [2024-06-28 00:05:53,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:53,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342587140] [2024-06-28 00:05:53,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:53,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:53,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:55,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:55,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:55,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342587140] [2024-06-28 00:05:55,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342587140] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:55,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:55,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:05:55,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341485476] [2024-06-28 00:05:55,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:55,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:05:55,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:55,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:05:55,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:05:55,928 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 00:05:55,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 269 transitions, 2608 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:55,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:55,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 00:05:55,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:56,366 INFO L124 PetriNetUnfolderBase]: 614/1212 cut-off events. [2024-06-28 00:05:56,366 INFO L125 PetriNetUnfolderBase]: For 90890/90890 co-relation queries the response was YES. [2024-06-28 00:05:56,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6726 conditions, 1212 events. 614/1212 cut-off events. For 90890/90890 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 7424 event pairs, 105 based on Foata normal form. 2/1208 useless extension candidates. Maximal degree in co-relation 6579. Up to 1033 conditions per place. [2024-06-28 00:05:56,381 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 218 selfloop transitions, 58 changer transitions 0/280 dead transitions. [2024-06-28 00:05:56,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 280 transitions, 3238 flow [2024-06-28 00:05:56,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:05:56,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:05:56,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-28 00:05:56,382 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-28 00:05:56,382 INFO L175 Difference]: Start difference. First operand has 352 places, 269 transitions, 2608 flow. Second operand 11 states and 143 transitions. [2024-06-28 00:05:56,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 280 transitions, 3238 flow [2024-06-28 00:05:56,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 280 transitions, 2902 flow, removed 46 selfloop flow, removed 17 redundant places. [2024-06-28 00:05:56,790 INFO L231 Difference]: Finished difference. Result has 346 places, 270 transitions, 2450 flow [2024-06-28 00:05:56,791 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2281, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2450, PETRI_PLACES=346, PETRI_TRANSITIONS=270} [2024-06-28 00:05:56,791 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 315 predicate places. [2024-06-28 00:05:56,791 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 270 transitions, 2450 flow [2024-06-28 00:05:56,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:56,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:56,791 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:56,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-28 00:05:56,792 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:05:56,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:56,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1678688205, now seen corresponding path program 33 times [2024-06-28 00:05:56,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:56,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987126428] [2024-06-28 00:05:56,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:56,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:56,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:58,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:58,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:58,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987126428] [2024-06-28 00:05:58,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987126428] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:58,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:58,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:05:58,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921538613] [2024-06-28 00:05:58,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:58,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:05:58,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:58,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:05:58,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:05:58,810 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 00:05:58,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 270 transitions, 2450 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:58,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:58,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 00:05:58,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:59,336 INFO L124 PetriNetUnfolderBase]: 618/1218 cut-off events. [2024-06-28 00:05:59,336 INFO L125 PetriNetUnfolderBase]: For 90922/90922 co-relation queries the response was YES. [2024-06-28 00:05:59,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6406 conditions, 1218 events. 618/1218 cut-off events. For 90922/90922 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 7458 event pairs, 105 based on Foata normal form. 2/1214 useless extension candidates. Maximal degree in co-relation 6268. Up to 978 conditions per place. [2024-06-28 00:05:59,349 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 182 selfloop transitions, 95 changer transitions 0/281 dead transitions. [2024-06-28 00:05:59,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 281 transitions, 3075 flow [2024-06-28 00:05:59,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:05:59,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:05:59,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-28 00:05:59,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-28 00:05:59,350 INFO L175 Difference]: Start difference. First operand has 346 places, 270 transitions, 2450 flow. Second operand 11 states and 143 transitions. [2024-06-28 00:05:59,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 281 transitions, 3075 flow [2024-06-28 00:05:59,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 281 transitions, 2917 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-06-28 00:05:59,636 INFO L231 Difference]: Finished difference. Result has 348 places, 271 transitions, 2537 flow [2024-06-28 00:05:59,636 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2292, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2537, PETRI_PLACES=348, PETRI_TRANSITIONS=271} [2024-06-28 00:05:59,637 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 317 predicate places. [2024-06-28 00:05:59,637 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 271 transitions, 2537 flow [2024-06-28 00:05:59,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:59,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:59,637 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:59,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-28 00:05:59,637 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:05:59,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:59,638 INFO L85 PathProgramCache]: Analyzing trace with hash -1009830461, now seen corresponding path program 34 times [2024-06-28 00:05:59,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:59,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297638187] [2024-06-28 00:05:59,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:59,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:59,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:01,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:06:01,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:01,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297638187] [2024-06-28 00:06:01,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297638187] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:01,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:01,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:06:01,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863281091] [2024-06-28 00:06:01,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:01,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:06:01,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:01,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:06:01,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:06:01,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 00:06:01,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 271 transitions, 2537 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:01,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:01,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 00:06:01,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:02,036 INFO L124 PetriNetUnfolderBase]: 622/1226 cut-off events. [2024-06-28 00:06:02,037 INFO L125 PetriNetUnfolderBase]: For 92826/92826 co-relation queries the response was YES. [2024-06-28 00:06:02,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6530 conditions, 1226 events. 622/1226 cut-off events. For 92826/92826 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 7507 event pairs, 107 based on Foata normal form. 2/1222 useless extension candidates. Maximal degree in co-relation 6391. Up to 986 conditions per place. [2024-06-28 00:06:02,049 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 194 selfloop transitions, 84 changer transitions 0/282 dead transitions. [2024-06-28 00:06:02,049 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 282 transitions, 3166 flow [2024-06-28 00:06:02,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:06:02,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:06:02,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-28 00:06:02,050 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-28 00:06:02,050 INFO L175 Difference]: Start difference. First operand has 348 places, 271 transitions, 2537 flow. Second operand 11 states and 144 transitions. [2024-06-28 00:06:02,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 282 transitions, 3166 flow [2024-06-28 00:06:02,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 282 transitions, 2932 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-28 00:06:02,350 INFO L231 Difference]: Finished difference. Result has 350 places, 272 transitions, 2528 flow [2024-06-28 00:06:02,350 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2303, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2528, PETRI_PLACES=350, PETRI_TRANSITIONS=272} [2024-06-28 00:06:02,350 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 319 predicate places. [2024-06-28 00:06:02,351 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 272 transitions, 2528 flow [2024-06-28 00:06:02,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:02,351 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:02,351 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:06:02,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-28 00:06:02,351 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:06:02,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:02,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1009835111, now seen corresponding path program 35 times [2024-06-28 00:06:02,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:02,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523036728] [2024-06-28 00:06:02,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:02,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:02,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:04,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:06:04,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:04,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523036728] [2024-06-28 00:06:04,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523036728] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:04,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:04,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:06:04,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221270182] [2024-06-28 00:06:04,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:04,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:06:04,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:04,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:06:04,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:06:04,270 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 00:06:04,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 272 transitions, 2528 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:04,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:04,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 00:06:04,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:04,732 INFO L124 PetriNetUnfolderBase]: 619/1223 cut-off events. [2024-06-28 00:06:04,732 INFO L125 PetriNetUnfolderBase]: For 81389/81389 co-relation queries the response was YES. [2024-06-28 00:06:04,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6164 conditions, 1223 events. 619/1223 cut-off events. For 81389/81389 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 7505 event pairs, 104 based on Foata normal form. 2/1219 useless extension candidates. Maximal degree in co-relation 6024. Up to 955 conditions per place. [2024-06-28 00:06:04,744 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 192 selfloop transitions, 87 changer transitions 0/283 dead transitions. [2024-06-28 00:06:04,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 283 transitions, 3110 flow [2024-06-28 00:06:04,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:06:04,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:06:04,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-06-28 00:06:04,745 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4119318181818182 [2024-06-28 00:06:04,745 INFO L175 Difference]: Start difference. First operand has 350 places, 272 transitions, 2528 flow. Second operand 11 states and 145 transitions. [2024-06-28 00:06:04,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 283 transitions, 3110 flow [2024-06-28 00:06:05,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 283 transitions, 2862 flow, removed 41 selfloop flow, removed 9 redundant places. [2024-06-28 00:06:05,059 INFO L231 Difference]: Finished difference. Result has 352 places, 272 transitions, 2458 flow [2024-06-28 00:06:05,060 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2280, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2458, PETRI_PLACES=352, PETRI_TRANSITIONS=272} [2024-06-28 00:06:05,060 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 321 predicate places. [2024-06-28 00:06:05,060 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 272 transitions, 2458 flow [2024-06-28 00:06:05,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:05,060 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:05,060 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:06:05,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-28 00:06:05,060 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:06:05,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:05,061 INFO L85 PathProgramCache]: Analyzing trace with hash -1670110381, now seen corresponding path program 7 times [2024-06-28 00:06:05,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:05,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66818134] [2024-06-28 00:06:05,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:05,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:05,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:06,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:06:06,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:06,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66818134] [2024-06-28 00:06:06,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66818134] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:06,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:06,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:06:06,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113181211] [2024-06-28 00:06:06,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:06,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:06:06,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:06,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:06:06,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:06:06,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:06:06,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 272 transitions, 2458 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:06,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:06,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:06:06,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:07,167 INFO L124 PetriNetUnfolderBase]: 627/1238 cut-off events. [2024-06-28 00:06:07,168 INFO L125 PetriNetUnfolderBase]: For 81297/81297 co-relation queries the response was YES. [2024-06-28 00:06:07,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6321 conditions, 1238 events. 627/1238 cut-off events. For 81297/81297 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 7589 event pairs, 106 based on Foata normal form. 1/1233 useless extension candidates. Maximal degree in co-relation 6180. Up to 913 conditions per place. [2024-06-28 00:06:07,177 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 170 selfloop transitions, 113 changer transitions 0/287 dead transitions. [2024-06-28 00:06:07,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 287 transitions, 3398 flow [2024-06-28 00:06:07,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:06:07,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:06:07,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 151 transitions. [2024-06-28 00:06:07,178 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.471875 [2024-06-28 00:06:07,178 INFO L175 Difference]: Start difference. First operand has 352 places, 272 transitions, 2458 flow. Second operand 10 states and 151 transitions. [2024-06-28 00:06:07,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 287 transitions, 3398 flow [2024-06-28 00:06:07,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 287 transitions, 3109 flow, removed 11 selfloop flow, removed 12 redundant places. [2024-06-28 00:06:07,517 INFO L231 Difference]: Finished difference. Result has 350 places, 276 transitions, 2532 flow [2024-06-28 00:06:07,517 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2169, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2532, PETRI_PLACES=350, PETRI_TRANSITIONS=276} [2024-06-28 00:06:07,518 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 319 predicate places. [2024-06-28 00:06:07,518 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 276 transitions, 2532 flow [2024-06-28 00:06:07,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:07,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:07,518 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:06:07,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-28 00:06:07,518 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:06:07,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:07,518 INFO L85 PathProgramCache]: Analyzing trace with hash -193070253, now seen corresponding path program 8 times [2024-06-28 00:06:07,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:07,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810597024] [2024-06-28 00:06:07,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:07,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:07,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:09,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:06:09,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:09,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810597024] [2024-06-28 00:06:09,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810597024] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:09,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:09,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:06:09,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906152105] [2024-06-28 00:06:09,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:09,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:06:09,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:09,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:06:09,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:06:09,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 00:06:09,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 276 transitions, 2532 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 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) [2024-06-28 00:06:09,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:09,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 00:06:09,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:10,115 INFO L124 PetriNetUnfolderBase]: 635/1256 cut-off events. [2024-06-28 00:06:10,115 INFO L125 PetriNetUnfolderBase]: For 89787/89787 co-relation queries the response was YES. [2024-06-28 00:06:10,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6538 conditions, 1256 events. 635/1256 cut-off events. For 89787/89787 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 7782 event pairs, 204 based on Foata normal form. 1/1256 useless extension candidates. Maximal degree in co-relation 6400. Up to 1147 conditions per place. [2024-06-28 00:06:10,127 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 263 selfloop transitions, 25 changer transitions 0/292 dead transitions. [2024-06-28 00:06:10,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 292 transitions, 3494 flow [2024-06-28 00:06:10,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 00:06:10,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 00:06:10,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 158 transitions. [2024-06-28 00:06:10,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3798076923076923 [2024-06-28 00:06:10,128 INFO L175 Difference]: Start difference. First operand has 350 places, 276 transitions, 2532 flow. Second operand 13 states and 158 transitions. [2024-06-28 00:06:10,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 292 transitions, 3494 flow [2024-06-28 00:06:10,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 292 transitions, 3288 flow, removed 32 selfloop flow, removed 6 redundant places. [2024-06-28 00:06:10,488 INFO L231 Difference]: Finished difference. Result has 357 places, 280 transitions, 2521 flow [2024-06-28 00:06:10,488 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2326, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2521, PETRI_PLACES=357, PETRI_TRANSITIONS=280} [2024-06-28 00:06:10,488 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 326 predicate places. [2024-06-28 00:06:10,488 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 280 transitions, 2521 flow [2024-06-28 00:06:10,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 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) [2024-06-28 00:06:10,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:10,489 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:06:10,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-28 00:06:10,489 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:06:10,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:10,489 INFO L85 PathProgramCache]: Analyzing trace with hash -535368843, now seen corresponding path program 9 times [2024-06-28 00:06:10,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:10,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266218004] [2024-06-28 00:06:10,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:10,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:10,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:12,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:06:12,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:12,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266218004] [2024-06-28 00:06:12,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266218004] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:12,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:12,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:06:12,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31176517] [2024-06-28 00:06:12,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:12,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:06:12,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:12,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:06:12,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:06:12,452 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 00:06:12,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 280 transitions, 2521 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 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) [2024-06-28 00:06:12,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:12,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 00:06:12,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:12,977 INFO L124 PetriNetUnfolderBase]: 633/1255 cut-off events. [2024-06-28 00:06:12,977 INFO L125 PetriNetUnfolderBase]: For 84640/84640 co-relation queries the response was YES. [2024-06-28 00:06:12,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6337 conditions, 1255 events. 633/1255 cut-off events. For 84640/84640 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 7780 event pairs, 202 based on Foata normal form. 1/1255 useless extension candidates. Maximal degree in co-relation 6196. Up to 1154 conditions per place. [2024-06-28 00:06:12,990 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 266 selfloop transitions, 20 changer transitions 0/290 dead transitions. [2024-06-28 00:06:12,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 290 transitions, 3115 flow [2024-06-28 00:06:12,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:06:12,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:06:12,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 144 transitions. [2024-06-28 00:06:12,991 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-28 00:06:12,991 INFO L175 Difference]: Start difference. First operand has 357 places, 280 transitions, 2521 flow. Second operand 12 states and 144 transitions. [2024-06-28 00:06:12,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 290 transitions, 3115 flow [2024-06-28 00:06:13,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 290 transitions, 2965 flow, removed 62 selfloop flow, removed 9 redundant places. [2024-06-28 00:06:13,303 INFO L231 Difference]: Finished difference. Result has 360 places, 280 transitions, 2416 flow [2024-06-28 00:06:13,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2371, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2416, PETRI_PLACES=360, PETRI_TRANSITIONS=280} [2024-06-28 00:06:13,304 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 329 predicate places. [2024-06-28 00:06:13,304 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 280 transitions, 2416 flow [2024-06-28 00:06:13,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 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) [2024-06-28 00:06:13,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:13,304 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:06:13,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-28 00:06:13,304 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:06:13,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:13,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1433052333, now seen corresponding path program 10 times [2024-06-28 00:06:13,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:13,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530220242] [2024-06-28 00:06:13,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:13,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:13,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:14,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:06:14,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:14,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530220242] [2024-06-28 00:06:14,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530220242] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:14,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:14,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:06:14,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802287737] [2024-06-28 00:06:14,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:14,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:06:14,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:14,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:06:14,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:06:14,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:06:14,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 280 transitions, 2416 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:14,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:14,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:06:14,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:15,357 INFO L124 PetriNetUnfolderBase]: 641/1265 cut-off events. [2024-06-28 00:06:15,357 INFO L125 PetriNetUnfolderBase]: For 92343/92343 co-relation queries the response was YES. [2024-06-28 00:06:15,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6561 conditions, 1265 events. 641/1265 cut-off events. For 92343/92343 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 7813 event pairs, 104 based on Foata normal form. 1/1260 useless extension candidates. Maximal degree in co-relation 6418. Up to 932 conditions per place. [2024-06-28 00:06:15,376 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 194 selfloop transitions, 97 changer transitions 0/295 dead transitions. [2024-06-28 00:06:15,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 295 transitions, 3394 flow [2024-06-28 00:06:15,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:06:15,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:06:15,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 153 transitions. [2024-06-28 00:06:15,377 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.478125 [2024-06-28 00:06:15,378 INFO L175 Difference]: Start difference. First operand has 360 places, 280 transitions, 2416 flow. Second operand 10 states and 153 transitions. [2024-06-28 00:06:15,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 295 transitions, 3394 flow [2024-06-28 00:06:15,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 295 transitions, 3346 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-28 00:06:15,769 INFO L231 Difference]: Finished difference. Result has 359 places, 284 transitions, 2715 flow [2024-06-28 00:06:15,769 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2368, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2715, PETRI_PLACES=359, PETRI_TRANSITIONS=284} [2024-06-28 00:06:15,770 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 328 predicate places. [2024-06-28 00:06:15,770 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 284 transitions, 2715 flow [2024-06-28 00:06:15,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:15,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:15,770 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:06:15,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-28 00:06:15,770 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:06:15,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:15,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1638860043, now seen corresponding path program 11 times [2024-06-28 00:06:15,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:15,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011846742] [2024-06-28 00:06:15,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:15,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:15,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:17,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:06:17,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:17,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011846742] [2024-06-28 00:06:17,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011846742] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:17,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:17,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:06:17,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223067029] [2024-06-28 00:06:17,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:17,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:06:17,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:17,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:06:17,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:06:17,599 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:06:17,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 284 transitions, 2715 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:17,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:17,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:06:17,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:18,058 INFO L124 PetriNetUnfolderBase]: 644/1270 cut-off events. [2024-06-28 00:06:18,058 INFO L125 PetriNetUnfolderBase]: For 95164/95164 co-relation queries the response was YES. [2024-06-28 00:06:18,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6833 conditions, 1270 events. 644/1270 cut-off events. For 95164/95164 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 7904 event pairs, 100 based on Foata normal form. 1/1265 useless extension candidates. Maximal degree in co-relation 6690. Up to 950 conditions per place. [2024-06-28 00:06:18,071 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 192 selfloop transitions, 100 changer transitions 0/296 dead transitions. [2024-06-28 00:06:18,071 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 296 transitions, 3397 flow [2024-06-28 00:06:18,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:06:18,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:06:18,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 159 transitions. [2024-06-28 00:06:18,072 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45170454545454547 [2024-06-28 00:06:18,072 INFO L175 Difference]: Start difference. First operand has 359 places, 284 transitions, 2715 flow. Second operand 11 states and 159 transitions. [2024-06-28 00:06:18,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 296 transitions, 3397 flow [2024-06-28 00:06:18,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 296 transitions, 3207 flow, removed 40 selfloop flow, removed 6 redundant places. [2024-06-28 00:06:18,461 INFO L231 Difference]: Finished difference. Result has 364 places, 286 transitions, 2810 flow [2024-06-28 00:06:18,461 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2525, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2810, PETRI_PLACES=364, PETRI_TRANSITIONS=286} [2024-06-28 00:06:18,461 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 333 predicate places. [2024-06-28 00:06:18,462 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 286 transitions, 2810 flow [2024-06-28 00:06:18,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:18,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:18,462 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:06:18,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-28 00:06:18,462 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:06:18,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:18,463 INFO L85 PathProgramCache]: Analyzing trace with hash -1670407051, now seen corresponding path program 12 times [2024-06-28 00:06:18,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:18,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007063645] [2024-06-28 00:06:18,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:18,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:18,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:20,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:06:20,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:20,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007063645] [2024-06-28 00:06:20,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007063645] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:20,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:20,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:06:20,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457861555] [2024-06-28 00:06:20,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:20,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:06:20,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:20,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:06:20,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:06:20,292 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:06:20,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 286 transitions, 2810 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:20,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:20,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:06:20,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:20,756 INFO L124 PetriNetUnfolderBase]: 647/1275 cut-off events. [2024-06-28 00:06:20,756 INFO L125 PetriNetUnfolderBase]: For 96412/96412 co-relation queries the response was YES. [2024-06-28 00:06:20,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7016 conditions, 1275 events. 647/1275 cut-off events. For 96412/96412 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 7907 event pairs, 100 based on Foata normal form. 1/1270 useless extension candidates. Maximal degree in co-relation 6870. Up to 955 conditions per place. [2024-06-28 00:06:20,769 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 183 selfloop transitions, 111 changer transitions 0/298 dead transitions. [2024-06-28 00:06:20,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 298 transitions, 3484 flow [2024-06-28 00:06:20,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:06:20,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:06:20,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 158 transitions. [2024-06-28 00:06:20,770 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44886363636363635 [2024-06-28 00:06:20,771 INFO L175 Difference]: Start difference. First operand has 364 places, 286 transitions, 2810 flow. Second operand 11 states and 158 transitions. [2024-06-28 00:06:20,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 298 transitions, 3484 flow [2024-06-28 00:06:21,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 298 transitions, 3215 flow, removed 36 selfloop flow, removed 9 redundant places. [2024-06-28 00:06:21,200 INFO L231 Difference]: Finished difference. Result has 366 places, 288 transitions, 2836 flow [2024-06-28 00:06:21,200 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2541, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2836, PETRI_PLACES=366, PETRI_TRANSITIONS=288} [2024-06-28 00:06:21,200 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 335 predicate places. [2024-06-28 00:06:21,201 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 288 transitions, 2836 flow [2024-06-28 00:06:21,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:21,201 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:21,201 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:06:21,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-28 00:06:21,201 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:06:21,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:21,202 INFO L85 PathProgramCache]: Analyzing trace with hash -729853243, now seen corresponding path program 13 times [2024-06-28 00:06:21,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:21,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268028888] [2024-06-28 00:06:21,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:21,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:21,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:22,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:06:22,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:22,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268028888] [2024-06-28 00:06:22,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268028888] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:22,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:22,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:06:22,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452321855] [2024-06-28 00:06:22,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:22,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:06:22,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:22,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:06:22,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:06:22,945 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:06:22,945 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 288 transitions, 2836 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:22,946 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:22,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:06:22,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:23,342 INFO L124 PetriNetUnfolderBase]: 650/1280 cut-off events. [2024-06-28 00:06:23,342 INFO L125 PetriNetUnfolderBase]: For 97649/97649 co-relation queries the response was YES. [2024-06-28 00:06:23,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7062 conditions, 1280 events. 650/1280 cut-off events. For 97649/97649 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 7923 event pairs, 106 based on Foata normal form. 1/1275 useless extension candidates. Maximal degree in co-relation 6915. Up to 960 conditions per place. [2024-06-28 00:06:23,356 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 201 selfloop transitions, 95 changer transitions 0/300 dead transitions. [2024-06-28 00:06:23,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 300 transitions, 3514 flow [2024-06-28 00:06:23,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:06:23,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:06:23,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 160 transitions. [2024-06-28 00:06:23,357 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-28 00:06:23,357 INFO L175 Difference]: Start difference. First operand has 366 places, 288 transitions, 2836 flow. Second operand 11 states and 160 transitions. [2024-06-28 00:06:23,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 300 transitions, 3514 flow [2024-06-28 00:06:23,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 300 transitions, 3239 flow, removed 28 selfloop flow, removed 9 redundant places. [2024-06-28 00:06:23,786 INFO L231 Difference]: Finished difference. Result has 368 places, 290 transitions, 2824 flow [2024-06-28 00:06:23,786 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2561, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2824, PETRI_PLACES=368, PETRI_TRANSITIONS=290} [2024-06-28 00:06:23,786 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 337 predicate places. [2024-06-28 00:06:23,786 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 290 transitions, 2824 flow [2024-06-28 00:06:23,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:23,787 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:23,787 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:06:23,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-28 00:06:23,787 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:06:23,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:23,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1678681261, now seen corresponding path program 14 times [2024-06-28 00:06:23,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:23,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913364325] [2024-06-28 00:06:23,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:23,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:23,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:25,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:06:25,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:25,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913364325] [2024-06-28 00:06:25,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913364325] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:25,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:25,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:06:25,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114737261] [2024-06-28 00:06:25,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:25,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:06:25,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:25,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:06:25,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:06:25,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:06:25,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 290 transitions, 2824 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:25,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:25,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:06:25,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:26,246 INFO L124 PetriNetUnfolderBase]: 648/1277 cut-off events. [2024-06-28 00:06:26,246 INFO L125 PetriNetUnfolderBase]: For 92037/92037 co-relation queries the response was YES. [2024-06-28 00:06:26,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6844 conditions, 1277 events. 648/1277 cut-off events. For 92037/92037 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 7929 event pairs, 106 based on Foata normal form. 1/1272 useless extension candidates. Maximal degree in co-relation 6696. Up to 957 conditions per place. [2024-06-28 00:06:26,256 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 184 selfloop transitions, 112 changer transitions 0/300 dead transitions. [2024-06-28 00:06:26,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 300 transitions, 3438 flow [2024-06-28 00:06:26,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:06:26,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:06:26,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 157 transitions. [2024-06-28 00:06:26,257 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4460227272727273 [2024-06-28 00:06:26,257 INFO L175 Difference]: Start difference. First operand has 368 places, 290 transitions, 2824 flow. Second operand 11 states and 157 transitions. [2024-06-28 00:06:26,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 300 transitions, 3438 flow [2024-06-28 00:06:26,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 300 transitions, 3141 flow, removed 55 selfloop flow, removed 9 redundant places. [2024-06-28 00:06:26,643 INFO L231 Difference]: Finished difference. Result has 370 places, 290 transitions, 2756 flow [2024-06-28 00:06:26,643 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2527, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2756, PETRI_PLACES=370, PETRI_TRANSITIONS=290} [2024-06-28 00:06:26,643 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 339 predicate places. [2024-06-28 00:06:26,643 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 290 transitions, 2756 flow [2024-06-28 00:06:26,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:26,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:26,644 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:06:26,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-28 00:06:26,644 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:06:26,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:26,644 INFO L85 PathProgramCache]: Analyzing trace with hash -1393350751, now seen corresponding path program 15 times [2024-06-28 00:06:26,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:26,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839171561] [2024-06-28 00:06:26,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:26,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:26,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:28,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:06:28,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:28,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839171561] [2024-06-28 00:06:28,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839171561] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:28,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:28,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:06:28,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322725935] [2024-06-28 00:06:28,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:28,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:06:28,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:28,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:06:28,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:06:28,764 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 00:06:28,765 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 290 transitions, 2756 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 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) [2024-06-28 00:06:28,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:28,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 00:06:28,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:29,328 INFO L124 PetriNetUnfolderBase]: 651/1287 cut-off events. [2024-06-28 00:06:29,328 INFO L125 PetriNetUnfolderBase]: For 93473/93473 co-relation queries the response was YES. [2024-06-28 00:06:29,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6878 conditions, 1287 events. 651/1287 cut-off events. For 93473/93473 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 8028 event pairs, 204 based on Foata normal form. 1/1287 useless extension candidates. Maximal degree in co-relation 6729. Up to 1184 conditions per place. [2024-06-28 00:06:29,342 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 278 selfloop transitions, 20 changer transitions 0/302 dead transitions. [2024-06-28 00:06:29,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 302 transitions, 3454 flow [2024-06-28 00:06:29,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:06:29,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:06:29,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 144 transitions. [2024-06-28 00:06:29,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-28 00:06:29,343 INFO L175 Difference]: Start difference. First operand has 370 places, 290 transitions, 2756 flow. Second operand 12 states and 144 transitions. [2024-06-28 00:06:29,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 302 transitions, 3454 flow [2024-06-28 00:06:29,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 302 transitions, 3218 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-28 00:06:29,728 INFO L231 Difference]: Finished difference. Result has 372 places, 292 transitions, 2649 flow [2024-06-28 00:06:29,728 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2520, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2649, PETRI_PLACES=372, PETRI_TRANSITIONS=292} [2024-06-28 00:06:29,728 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 341 predicate places. [2024-06-28 00:06:29,728 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 292 transitions, 2649 flow [2024-06-28 00:06:29,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 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) [2024-06-28 00:06:29,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:29,729 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:06:29,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-28 00:06:29,729 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:06:29,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:29,730 INFO L85 PathProgramCache]: Analyzing trace with hash -738127453, now seen corresponding path program 16 times [2024-06-28 00:06:29,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:29,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655958310] [2024-06-28 00:06:29,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:29,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:29,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:31,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:06:31,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:31,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655958310] [2024-06-28 00:06:31,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655958310] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:31,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:31,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:06:31,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767095078] [2024-06-28 00:06:31,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:31,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:06:31,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:31,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:06:31,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:06:31,467 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:06:31,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 292 transitions, 2649 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:31,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:31,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:06:31,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:31,979 INFO L124 PetriNetUnfolderBase]: 654/1289 cut-off events. [2024-06-28 00:06:31,980 INFO L125 PetriNetUnfolderBase]: For 95184/95184 co-relation queries the response was YES. [2024-06-28 00:06:31,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6787 conditions, 1289 events. 654/1289 cut-off events. For 95184/95184 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 8035 event pairs, 104 based on Foata normal form. 1/1284 useless extension candidates. Maximal degree in co-relation 6637. Up to 967 conditions per place. [2024-06-28 00:06:31,994 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 207 selfloop transitions, 93 changer transitions 0/304 dead transitions. [2024-06-28 00:06:31,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 304 transitions, 3339 flow [2024-06-28 00:06:31,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:06:31,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:06:31,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 161 transitions. [2024-06-28 00:06:31,996 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45738636363636365 [2024-06-28 00:06:31,996 INFO L175 Difference]: Start difference. First operand has 372 places, 292 transitions, 2649 flow. Second operand 11 states and 161 transitions. [2024-06-28 00:06:31,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 304 transitions, 3339 flow [2024-06-28 00:06:32,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 304 transitions, 3226 flow, removed 38 selfloop flow, removed 10 redundant places. [2024-06-28 00:06:32,387 INFO L231 Difference]: Finished difference. Result has 373 places, 294 transitions, 2799 flow [2024-06-28 00:06:32,388 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2536, PETRI_DIFFERENCE_MINUEND_PLACES=362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2799, PETRI_PLACES=373, PETRI_TRANSITIONS=294} [2024-06-28 00:06:32,388 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 342 predicate places. [2024-06-28 00:06:32,389 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 294 transitions, 2799 flow [2024-06-28 00:06:32,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:32,389 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:32,389 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:06:32,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-28 00:06:32,390 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:06:32,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:32,390 INFO L85 PathProgramCache]: Analyzing trace with hash -966028603, now seen corresponding path program 17 times [2024-06-28 00:06:32,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:32,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148680611] [2024-06-28 00:06:32,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:32,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:32,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:34,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:06:34,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:34,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148680611] [2024-06-28 00:06:34,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148680611] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:34,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:34,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:06:34,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074923193] [2024-06-28 00:06:34,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:34,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:06:34,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:34,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:06:34,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:06:34,379 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:06:34,379 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 294 transitions, 2799 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:34,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:34,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:06:34,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:35,034 INFO L124 PetriNetUnfolderBase]: 657/1294 cut-off events. [2024-06-28 00:06:35,034 INFO L125 PetriNetUnfolderBase]: For 97116/97116 co-relation queries the response was YES. [2024-06-28 00:06:35,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6963 conditions, 1294 events. 657/1294 cut-off events. For 97116/97116 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 8051 event pairs, 104 based on Foata normal form. 1/1289 useless extension candidates. Maximal degree in co-relation 6812. Up to 972 conditions per place. [2024-06-28 00:06:35,044 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 210 selfloop transitions, 92 changer transitions 0/306 dead transitions. [2024-06-28 00:06:35,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 306 transitions, 3497 flow [2024-06-28 00:06:35,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:06:35,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:06:35,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 162 transitions. [2024-06-28 00:06:35,045 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4602272727272727 [2024-06-28 00:06:35,045 INFO L175 Difference]: Start difference. First operand has 373 places, 294 transitions, 2799 flow. Second operand 11 states and 162 transitions. [2024-06-28 00:06:35,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 306 transitions, 3497 flow [2024-06-28 00:06:35,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 306 transitions, 3254 flow, removed 30 selfloop flow, removed 9 redundant places. [2024-06-28 00:06:35,470 INFO L231 Difference]: Finished difference. Result has 375 places, 296 transitions, 2821 flow [2024-06-28 00:06:35,470 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2556, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2821, PETRI_PLACES=375, PETRI_TRANSITIONS=296} [2024-06-28 00:06:35,470 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 344 predicate places. [2024-06-28 00:06:35,470 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 296 transitions, 2821 flow [2024-06-28 00:06:35,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:35,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:35,471 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:06:35,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-28 00:06:35,471 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:06:35,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:35,471 INFO L85 PathProgramCache]: Analyzing trace with hash 742054739, now seen corresponding path program 18 times [2024-06-28 00:06:35,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:35,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79991149] [2024-06-28 00:06:35,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:35,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:35,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:37,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:06:37,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:37,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79991149] [2024-06-28 00:06:37,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79991149] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:37,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:37,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:06:37,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549224452] [2024-06-28 00:06:37,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:37,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:06:37,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:37,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:06:37,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:06:37,446 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:06:37,446 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 296 transitions, 2821 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:37,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:37,446 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:06:37,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:38,061 INFO L124 PetriNetUnfolderBase]: 655/1291 cut-off events. [2024-06-28 00:06:38,061 INFO L125 PetriNetUnfolderBase]: For 90892/90892 co-relation queries the response was YES. [2024-06-28 00:06:38,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6762 conditions, 1291 events. 655/1291 cut-off events. For 90892/90892 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 8045 event pairs, 104 based on Foata normal form. 1/1286 useless extension candidates. Maximal degree in co-relation 6610. Up to 969 conditions per place. [2024-06-28 00:06:38,082 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 204 selfloop transitions, 98 changer transitions 0/306 dead transitions. [2024-06-28 00:06:38,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 306 transitions, 3447 flow [2024-06-28 00:06:38,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:06:38,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:06:38,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 159 transitions. [2024-06-28 00:06:38,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45170454545454547 [2024-06-28 00:06:38,084 INFO L175 Difference]: Start difference. First operand has 375 places, 296 transitions, 2821 flow. Second operand 11 states and 159 transitions. [2024-06-28 00:06:38,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 306 transitions, 3447 flow [2024-06-28 00:06:38,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 306 transitions, 3148 flow, removed 59 selfloop flow, removed 9 redundant places. [2024-06-28 00:06:38,513 INFO L231 Difference]: Finished difference. Result has 377 places, 296 transitions, 2723 flow [2024-06-28 00:06:38,513 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2522, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2723, PETRI_PLACES=377, PETRI_TRANSITIONS=296} [2024-06-28 00:06:38,513 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 346 predicate places. [2024-06-28 00:06:38,513 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 296 transitions, 2723 flow [2024-06-28 00:06:38,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:38,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:38,513 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:06:38,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-28 00:06:38,513 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:06:38,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:38,514 INFO L85 PathProgramCache]: Analyzing trace with hash -773466807, now seen corresponding path program 19 times [2024-06-28 00:06:38,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:38,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632961462] [2024-06-28 00:06:38,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:38,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:38,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:40,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:06:40,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:40,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632961462] [2024-06-28 00:06:40,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632961462] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:40,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:40,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:06:40,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570847633] [2024-06-28 00:06:40,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:40,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:06:40,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:40,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:06:40,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:06:40,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:06:40,209 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 296 transitions, 2723 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:40,209 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:40,209 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:06:40,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:40,590 INFO L124 PetriNetUnfolderBase]: 658/1296 cut-off events. [2024-06-28 00:06:40,590 INFO L125 PetriNetUnfolderBase]: For 92133/92133 co-relation queries the response was YES. [2024-06-28 00:06:40,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6764 conditions, 1296 events. 658/1296 cut-off events. For 92133/92133 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 8079 event pairs, 100 based on Foata normal form. 1/1291 useless extension candidates. Maximal degree in co-relation 6611. Up to 962 conditions per place. [2024-06-28 00:06:40,604 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 203 selfloop transitions, 104 changer transitions 0/311 dead transitions. [2024-06-28 00:06:40,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 311 transitions, 3775 flow [2024-06-28 00:06:40,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:06:40,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:06:40,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 152 transitions. [2024-06-28 00:06:40,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.475 [2024-06-28 00:06:40,605 INFO L175 Difference]: Start difference. First operand has 377 places, 296 transitions, 2723 flow. Second operand 10 states and 152 transitions. [2024-06-28 00:06:40,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 311 transitions, 3775 flow [2024-06-28 00:06:41,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 311 transitions, 3553 flow, removed 7 selfloop flow, removed 10 redundant places. [2024-06-28 00:06:41,051 INFO L231 Difference]: Finished difference. Result has 377 places, 300 transitions, 2886 flow [2024-06-28 00:06:41,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2501, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2886, PETRI_PLACES=377, PETRI_TRANSITIONS=300} [2024-06-28 00:06:41,051 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 346 predicate places. [2024-06-28 00:06:41,052 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 300 transitions, 2886 flow [2024-06-28 00:06:41,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:41,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:41,052 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:06:41,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-28 00:06:41,053 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:06:41,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:41,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1003394427, now seen corresponding path program 20 times [2024-06-28 00:06:41,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:41,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083784309] [2024-06-28 00:06:41,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:41,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:41,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:42,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:06:42,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:42,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083784309] [2024-06-28 00:06:42,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083784309] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:42,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:42,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:06:42,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592169531] [2024-06-28 00:06:42,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:42,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:06:42,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:42,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:06:42,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:06:42,857 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:06:42,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 300 transitions, 2886 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:42,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:42,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:06:42,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:43,481 INFO L124 PetriNetUnfolderBase]: 661/1301 cut-off events. [2024-06-28 00:06:43,481 INFO L125 PetriNetUnfolderBase]: For 94370/94370 co-relation queries the response was YES. [2024-06-28 00:06:43,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6879 conditions, 1301 events. 661/1301 cut-off events. For 94370/94370 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 8139 event pairs, 100 based on Foata normal form. 1/1296 useless extension candidates. Maximal degree in co-relation 6726. Up to 979 conditions per place. [2024-06-28 00:06:43,492 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 209 selfloop transitions, 99 changer transitions 0/312 dead transitions. [2024-06-28 00:06:43,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 312 transitions, 3612 flow [2024-06-28 00:06:43,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:06:43,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:06:43,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 160 transitions. [2024-06-28 00:06:43,493 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-28 00:06:43,493 INFO L175 Difference]: Start difference. First operand has 377 places, 300 transitions, 2886 flow. Second operand 11 states and 160 transitions. [2024-06-28 00:06:43,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 312 transitions, 3612 flow [2024-06-28 00:06:43,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 312 transitions, 3380 flow, removed 56 selfloop flow, removed 6 redundant places. [2024-06-28 00:06:43,983 INFO L231 Difference]: Finished difference. Result has 382 places, 302 transitions, 2949 flow [2024-06-28 00:06:43,984 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2670, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2949, PETRI_PLACES=382, PETRI_TRANSITIONS=302} [2024-06-28 00:06:43,984 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 351 predicate places. [2024-06-28 00:06:43,984 INFO L495 AbstractCegarLoop]: Abstraction has has 382 places, 302 transitions, 2949 flow [2024-06-28 00:06:43,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:43,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:43,984 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:06:43,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-28 00:06:43,984 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:06:43,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:43,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1009650537, now seen corresponding path program 21 times [2024-06-28 00:06:43,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:43,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766436348] [2024-06-28 00:06:43,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:43,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:44,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:45,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:06:45,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:45,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766436348] [2024-06-28 00:06:45,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766436348] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:45,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:45,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:06:45,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491153744] [2024-06-28 00:06:45,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:45,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:06:45,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:45,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:06:45,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:06:45,878 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:06:45,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 302 transitions, 2949 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:45,878 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:45,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:06:45,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:46,492 INFO L124 PetriNetUnfolderBase]: 659/1298 cut-off events. [2024-06-28 00:06:46,492 INFO L125 PetriNetUnfolderBase]: For 87052/87052 co-relation queries the response was YES. [2024-06-28 00:06:46,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6765 conditions, 1298 events. 659/1298 cut-off events. For 87052/87052 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 8107 event pairs, 100 based on Foata normal form. 1/1293 useless extension candidates. Maximal degree in co-relation 6609. Up to 976 conditions per place. [2024-06-28 00:06:46,506 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 206 selfloop transitions, 102 changer transitions 0/312 dead transitions. [2024-06-28 00:06:46,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 312 transitions, 3587 flow [2024-06-28 00:06:46,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:06:46,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:06:46,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 158 transitions. [2024-06-28 00:06:46,507 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44886363636363635 [2024-06-28 00:06:46,507 INFO L175 Difference]: Start difference. First operand has 382 places, 302 transitions, 2949 flow. Second operand 11 states and 158 transitions. [2024-06-28 00:06:46,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 312 transitions, 3587 flow [2024-06-28 00:06:46,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 312 transitions, 3270 flow, removed 61 selfloop flow, removed 9 redundant places. [2024-06-28 00:06:46,947 INFO L231 Difference]: Finished difference. Result has 384 places, 302 transitions, 2841 flow [2024-06-28 00:06:46,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2632, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2841, PETRI_PLACES=384, PETRI_TRANSITIONS=302} [2024-06-28 00:06:46,948 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 353 predicate places. [2024-06-28 00:06:46,948 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 302 transitions, 2841 flow [2024-06-28 00:06:46,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:46,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:46,948 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:06:46,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-28 00:06:46,948 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:06:46,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:46,949 INFO L85 PathProgramCache]: Analyzing trace with hash 81141190, now seen corresponding path program 1 times [2024-06-28 00:06:46,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:46,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154418012] [2024-06-28 00:06:46,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:46,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:46,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:48,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:06:48,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:48,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154418012] [2024-06-28 00:06:48,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154418012] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:48,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:48,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:06:48,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045257350] [2024-06-28 00:06:48,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:48,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:06:48,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:48,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:06:48,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:06:48,786 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 00:06:48,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 302 transitions, 2841 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 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) [2024-06-28 00:06:48,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:48,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 00:06:48,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:49,245 INFO L124 PetriNetUnfolderBase]: 663/1310 cut-off events. [2024-06-28 00:06:49,245 INFO L125 PetriNetUnfolderBase]: For 95017/95017 co-relation queries the response was YES. [2024-06-28 00:06:49,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6702 conditions, 1310 events. 663/1310 cut-off events. For 95017/95017 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 8195 event pairs, 114 based on Foata normal form. 2/1311 useless extension candidates. Maximal degree in co-relation 6545. Up to 1160 conditions per place. [2024-06-28 00:06:49,260 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 278 selfloop transitions, 40 changer transitions 0/322 dead transitions. [2024-06-28 00:06:49,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 322 transitions, 3535 flow [2024-06-28 00:06:49,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 00:06:49,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 00:06:49,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 165 transitions. [2024-06-28 00:06:49,261 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39663461538461536 [2024-06-28 00:06:49,261 INFO L175 Difference]: Start difference. First operand has 384 places, 302 transitions, 2841 flow. Second operand 13 states and 165 transitions. [2024-06-28 00:06:49,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 322 transitions, 3535 flow [2024-06-28 00:06:49,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 322 transitions, 3312 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-28 00:06:49,648 INFO L231 Difference]: Finished difference. Result has 387 places, 303 transitions, 2714 flow [2024-06-28 00:06:49,649 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2618, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2714, PETRI_PLACES=387, PETRI_TRANSITIONS=303} [2024-06-28 00:06:49,649 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 356 predicate places. [2024-06-28 00:06:49,649 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 303 transitions, 2714 flow [2024-06-28 00:06:49,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 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) [2024-06-28 00:06:49,649 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:49,649 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:06:49,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-28 00:06:49,649 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:06:49,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:49,650 INFO L85 PathProgramCache]: Analyzing trace with hash 626962290, now seen corresponding path program 2 times [2024-06-28 00:06:49,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:49,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310617669] [2024-06-28 00:06:49,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:49,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:49,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:51,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:06:51,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:51,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310617669] [2024-06-28 00:06:51,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310617669] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:51,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:51,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:06:51,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874997632] [2024-06-28 00:06:51,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:51,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:06:51,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:51,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:06:51,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:06:51,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 00:06:51,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 303 transitions, 2714 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 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) [2024-06-28 00:06:51,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:51,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 00:06:51,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:51,985 INFO L124 PetriNetUnfolderBase]: 674/1331 cut-off events. [2024-06-28 00:06:51,985 INFO L125 PetriNetUnfolderBase]: For 112435/112435 co-relation queries the response was YES. [2024-06-28 00:06:51,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6932 conditions, 1331 events. 674/1331 cut-off events. For 112435/112435 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 8361 event pairs, 92 based on Foata normal form. 2/1332 useless extension candidates. Maximal degree in co-relation 6774. Up to 1008 conditions per place. [2024-06-28 00:06:52,003 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 282 selfloop transitions, 42 changer transitions 0/328 dead transitions. [2024-06-28 00:06:52,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 328 transitions, 3696 flow [2024-06-28 00:06:52,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 00:06:52,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 00:06:52,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 172 transitions. [2024-06-28 00:06:52,004 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41346153846153844 [2024-06-28 00:06:52,004 INFO L175 Difference]: Start difference. First operand has 387 places, 303 transitions, 2714 flow. Second operand 13 states and 172 transitions. [2024-06-28 00:06:52,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 328 transitions, 3696 flow [2024-06-28 00:06:52,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 328 transitions, 3610 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-28 00:06:52,413 INFO L231 Difference]: Finished difference. Result has 389 places, 305 transitions, 2744 flow [2024-06-28 00:06:52,413 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2628, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2744, PETRI_PLACES=389, PETRI_TRANSITIONS=305} [2024-06-28 00:06:52,413 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 358 predicate places. [2024-06-28 00:06:52,413 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 305 transitions, 2744 flow [2024-06-28 00:06:52,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 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) [2024-06-28 00:06:52,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:52,413 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:06:52,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-28 00:06:52,414 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:06:52,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:52,414 INFO L85 PathProgramCache]: Analyzing trace with hash 1393564774, now seen corresponding path program 3 times [2024-06-28 00:06:52,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:52,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543162599] [2024-06-28 00:06:52,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:52,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:52,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:54,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:06:54,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:54,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543162599] [2024-06-28 00:06:54,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543162599] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:54,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:54,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:06:54,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010235396] [2024-06-28 00:06:54,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:54,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:06:54,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:54,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:06:54,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:06:54,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 00:06:54,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 305 transitions, 2744 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 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) [2024-06-28 00:06:54,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:54,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 00:06:54,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:54,806 INFO L124 PetriNetUnfolderBase]: 678/1339 cut-off events. [2024-06-28 00:06:54,806 INFO L125 PetriNetUnfolderBase]: For 114322/114322 co-relation queries the response was YES. [2024-06-28 00:06:54,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7009 conditions, 1339 events. 678/1339 cut-off events. For 114322/114322 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 8408 event pairs, 114 based on Foata normal form. 2/1340 useless extension candidates. Maximal degree in co-relation 6850. Up to 1155 conditions per place. [2024-06-28 00:06:54,821 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 281 selfloop transitions, 41 changer transitions 0/326 dead transitions. [2024-06-28 00:06:54,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 326 transitions, 3452 flow [2024-06-28 00:06:54,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 00:06:54,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 00:06:54,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 167 transitions. [2024-06-28 00:06:54,822 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4014423076923077 [2024-06-28 00:06:54,822 INFO L175 Difference]: Start difference. First operand has 389 places, 305 transitions, 2744 flow. Second operand 13 states and 167 transitions. [2024-06-28 00:06:54,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 326 transitions, 3452 flow [2024-06-28 00:06:55,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 326 transitions, 3385 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-28 00:06:55,213 INFO L231 Difference]: Finished difference. Result has 393 places, 306 transitions, 2781 flow [2024-06-28 00:06:55,214 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2679, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2781, PETRI_PLACES=393, PETRI_TRANSITIONS=306} [2024-06-28 00:06:55,214 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 362 predicate places. [2024-06-28 00:06:55,214 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 306 transitions, 2781 flow [2024-06-28 00:06:55,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 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) [2024-06-28 00:06:55,214 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:55,215 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:06:55,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-28 00:06:55,215 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:06:55,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:55,215 INFO L85 PathProgramCache]: Analyzing trace with hash 1388058244, now seen corresponding path program 4 times [2024-06-28 00:06:55,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:55,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543280634] [2024-06-28 00:06:55,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:55,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:55,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:56,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:06:56,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:56,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543280634] [2024-06-28 00:06:56,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543280634] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:56,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:56,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:06:56,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094153523] [2024-06-28 00:06:56,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:56,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:06:56,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:56,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:06:56,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:06:57,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:06:57,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 306 transitions, 2781 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:57,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:57,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:06:57,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:57,737 INFO L124 PetriNetUnfolderBase]: 675/1334 cut-off events. [2024-06-28 00:06:57,737 INFO L125 PetriNetUnfolderBase]: For 99744/99744 co-relation queries the response was YES. [2024-06-28 00:06:57,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6770 conditions, 1334 events. 675/1334 cut-off events. For 99744/99744 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 8399 event pairs, 106 based on Foata normal form. 2/1335 useless extension candidates. Maximal degree in co-relation 6609. Up to 1092 conditions per place. [2024-06-28 00:06:57,749 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 280 selfloop transitions, 39 changer transitions 0/323 dead transitions. [2024-06-28 00:06:57,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 323 transitions, 3459 flow [2024-06-28 00:06:57,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:06:57,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:06:57,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 147 transitions. [2024-06-28 00:06:57,750 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.459375 [2024-06-28 00:06:57,750 INFO L175 Difference]: Start difference. First operand has 393 places, 306 transitions, 2781 flow. Second operand 10 states and 147 transitions. [2024-06-28 00:06:57,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 323 transitions, 3459 flow [2024-06-28 00:06:58,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 323 transitions, 3367 flow, removed 7 selfloop flow, removed 11 redundant places. [2024-06-28 00:06:58,103 INFO L231 Difference]: Finished difference. Result has 392 places, 306 transitions, 2773 flow [2024-06-28 00:06:58,103 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2689, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2773, PETRI_PLACES=392, PETRI_TRANSITIONS=306} [2024-06-28 00:06:58,104 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 361 predicate places. [2024-06-28 00:06:58,104 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 306 transitions, 2773 flow [2024-06-28 00:06:58,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:58,104 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:58,104 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:06:58,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-28 00:06:58,104 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:06:58,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:58,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1173903660, now seen corresponding path program 5 times [2024-06-28 00:06:58,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:58,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997780355] [2024-06-28 00:06:58,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:58,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:58,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:59,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:06:59,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:59,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997780355] [2024-06-28 00:06:59,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997780355] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:59,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:59,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:06:59,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068193860] [2024-06-28 00:06:59,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:59,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:06:59,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:59,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:06:59,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:06:59,897 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 00:06:59,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 306 transitions, 2773 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 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) [2024-06-28 00:06:59,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:59,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 00:06:59,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:00,483 INFO L124 PetriNetUnfolderBase]: 679/1342 cut-off events. [2024-06-28 00:07:00,483 INFO L125 PetriNetUnfolderBase]: For 98598/98598 co-relation queries the response was YES. [2024-06-28 00:07:00,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6816 conditions, 1342 events. 679/1342 cut-off events. For 98598/98598 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 8434 event pairs, 80 based on Foata normal form. 2/1343 useless extension candidates. Maximal degree in co-relation 6655. Up to 1071 conditions per place. [2024-06-28 00:07:00,504 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 291 selfloop transitions, 35 changer transitions 0/330 dead transitions. [2024-06-28 00:07:00,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 330 transitions, 3495 flow [2024-06-28 00:07:00,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:07:00,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:07:00,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 156 transitions. [2024-06-28 00:07:00,506 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-28 00:07:00,506 INFO L175 Difference]: Start difference. First operand has 392 places, 306 transitions, 2773 flow. Second operand 12 states and 156 transitions. [2024-06-28 00:07:00,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 330 transitions, 3495 flow [2024-06-28 00:07:01,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 330 transitions, 3401 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-28 00:07:01,110 INFO L231 Difference]: Finished difference. Result has 395 places, 307 transitions, 2772 flow [2024-06-28 00:07:01,110 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2679, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2772, PETRI_PLACES=395, PETRI_TRANSITIONS=307} [2024-06-28 00:07:01,110 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 364 predicate places. [2024-06-28 00:07:01,110 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 307 transitions, 2772 flow [2024-06-28 00:07:01,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 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) [2024-06-28 00:07:01,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:01,111 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:07:01,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-28 00:07:01,111 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:07:01,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:01,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1511683130, now seen corresponding path program 1 times [2024-06-28 00:07:01,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:01,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479059958] [2024-06-28 00:07:01,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:01,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:01,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:03,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:07:03,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:03,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479059958] [2024-06-28 00:07:03,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479059958] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:03,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:03,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:07:03,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247937456] [2024-06-28 00:07:03,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:03,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:07:03,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:03,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:07:03,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:07:03,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:07:03,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 307 transitions, 2772 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-06-28 00:07:03,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:03,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:07:03,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:03,637 INFO L124 PetriNetUnfolderBase]: 691/1370 cut-off events. [2024-06-28 00:07:03,637 INFO L125 PetriNetUnfolderBase]: For 152312/152312 co-relation queries the response was YES. [2024-06-28 00:07:03,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7051 conditions, 1370 events. 691/1370 cut-off events. For 152312/152312 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 8649 event pairs, 124 based on Foata normal form. 8/1377 useless extension candidates. Maximal degree in co-relation 6889. Up to 1191 conditions per place. [2024-06-28 00:07:03,653 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 277 selfloop transitions, 36 changer transitions 9/326 dead transitions. [2024-06-28 00:07:03,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 406 places, 326 transitions, 3544 flow [2024-06-28 00:07:03,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:07:03,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:07:03,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 166 transitions. [2024-06-28 00:07:03,654 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4322916666666667 [2024-06-28 00:07:03,654 INFO L175 Difference]: Start difference. First operand has 395 places, 307 transitions, 2772 flow. Second operand 12 states and 166 transitions. [2024-06-28 00:07:03,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 406 places, 326 transitions, 3544 flow [2024-06-28 00:07:04,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 326 transitions, 3433 flow, removed 12 selfloop flow, removed 11 redundant places. [2024-06-28 00:07:04,084 INFO L231 Difference]: Finished difference. Result has 396 places, 304 transitions, 2716 flow [2024-06-28 00:07:04,084 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2661, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2716, PETRI_PLACES=396, PETRI_TRANSITIONS=304} [2024-06-28 00:07:04,085 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 365 predicate places. [2024-06-28 00:07:04,085 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 304 transitions, 2716 flow [2024-06-28 00:07:04,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-06-28 00:07:04,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:04,085 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:07:04,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-28 00:07:04,085 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:07:04,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:04,086 INFO L85 PathProgramCache]: Analyzing trace with hash 778942706, now seen corresponding path program 6 times [2024-06-28 00:07:04,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:04,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992289142] [2024-06-28 00:07:04,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:04,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:04,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:06,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:07:06,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:06,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992289142] [2024-06-28 00:07:06,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992289142] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:06,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:06,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:07:06,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906169322] [2024-06-28 00:07:06,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:06,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:07:06,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:06,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:07:06,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:07:06,591 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:07:06,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 304 transitions, 2716 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:06,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:06,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:07:06,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:07,200 INFO L124 PetriNetUnfolderBase]: 685/1355 cut-off events. [2024-06-28 00:07:07,200 INFO L125 PetriNetUnfolderBase]: For 121597/121597 co-relation queries the response was YES. [2024-06-28 00:07:07,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7075 conditions, 1355 events. 685/1355 cut-off events. For 121597/121597 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 8545 event pairs, 105 based on Foata normal form. 2/1356 useless extension candidates. Maximal degree in co-relation 6915. Up to 1066 conditions per place. [2024-06-28 00:07:07,216 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 258 selfloop transitions, 60 changer transitions 0/322 dead transitions. [2024-06-28 00:07:07,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 322 transitions, 3684 flow [2024-06-28 00:07:07,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:07:07,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:07:07,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 162 transitions. [2024-06-28 00:07:07,218 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4602272727272727 [2024-06-28 00:07:07,218 INFO L175 Difference]: Start difference. First operand has 396 places, 304 transitions, 2716 flow. Second operand 11 states and 162 transitions. [2024-06-28 00:07:07,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 322 transitions, 3684 flow [2024-06-28 00:07:07,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 322 transitions, 3541 flow, removed 7 selfloop flow, removed 12 redundant places. [2024-06-28 00:07:07,668 INFO L231 Difference]: Finished difference. Result has 392 places, 306 transitions, 2736 flow [2024-06-28 00:07:07,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2577, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2736, PETRI_PLACES=392, PETRI_TRANSITIONS=306} [2024-06-28 00:07:07,669 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 361 predicate places. [2024-06-28 00:07:07,669 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 306 transitions, 2736 flow [2024-06-28 00:07:07,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:07,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:07,669 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:07:07,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-28 00:07:07,669 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:07:07,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:07,669 INFO L85 PathProgramCache]: Analyzing trace with hash 784449236, now seen corresponding path program 7 times [2024-06-28 00:07:07,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:07,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970973185] [2024-06-28 00:07:07,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:07,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:07,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:09,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:07:09,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:09,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970973185] [2024-06-28 00:07:09,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970973185] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:09,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:09,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:07:09,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771773237] [2024-06-28 00:07:09,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:09,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:07:09,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:09,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:07:09,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:07:09,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:07:09,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 306 transitions, 2736 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:09,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:09,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:07:09,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:10,474 INFO L124 PetriNetUnfolderBase]: 689/1363 cut-off events. [2024-06-28 00:07:10,474 INFO L125 PetriNetUnfolderBase]: For 120231/120231 co-relation queries the response was YES. [2024-06-28 00:07:10,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7046 conditions, 1363 events. 689/1363 cut-off events. For 120231/120231 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 8600 event pairs, 109 based on Foata normal form. 2/1364 useless extension candidates. Maximal degree in co-relation 6888. Up to 1110 conditions per place. [2024-06-28 00:07:10,489 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 258 selfloop transitions, 60 changer transitions 0/322 dead transitions. [2024-06-28 00:07:10,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 322 transitions, 3686 flow [2024-06-28 00:07:10,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:07:10,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:07:10,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 160 transitions. [2024-06-28 00:07:10,490 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-28 00:07:10,490 INFO L175 Difference]: Start difference. First operand has 392 places, 306 transitions, 2736 flow. Second operand 11 states and 160 transitions. [2024-06-28 00:07:10,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 322 transitions, 3686 flow [2024-06-28 00:07:10,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 322 transitions, 3589 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-28 00:07:10,949 INFO L231 Difference]: Finished difference. Result has 396 places, 307 transitions, 2782 flow [2024-06-28 00:07:10,949 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2643, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2782, PETRI_PLACES=396, PETRI_TRANSITIONS=307} [2024-06-28 00:07:10,949 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 365 predicate places. [2024-06-28 00:07:10,949 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 307 transitions, 2782 flow [2024-06-28 00:07:10,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:10,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:10,950 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:07:10,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-28 00:07:10,950 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:07:10,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:10,950 INFO L85 PathProgramCache]: Analyzing trace with hash -302801276, now seen corresponding path program 8 times [2024-06-28 00:07:10,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:10,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919300833] [2024-06-28 00:07:10,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:10,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:10,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:13,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:07:13,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:13,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919300833] [2024-06-28 00:07:13,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919300833] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:13,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:13,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:07:13,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53052478] [2024-06-28 00:07:13,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:13,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:07:13,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:13,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:07:13,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:07:13,235 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:07:13,236 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 307 transitions, 2782 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:13,236 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:13,236 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:07:13,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:13,714 INFO L124 PetriNetUnfolderBase]: 686/1358 cut-off events. [2024-06-28 00:07:13,714 INFO L125 PetriNetUnfolderBase]: For 104595/104595 co-relation queries the response was YES. [2024-06-28 00:07:13,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6817 conditions, 1358 events. 686/1358 cut-off events. For 104595/104595 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 8603 event pairs, 110 based on Foata normal form. 2/1359 useless extension candidates. Maximal degree in co-relation 6657. Up to 1132 conditions per place. [2024-06-28 00:07:13,726 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 258 selfloop transitions, 58 changer transitions 0/320 dead transitions. [2024-06-28 00:07:13,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 320 transitions, 3444 flow [2024-06-28 00:07:13,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:07:13,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:07:13,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 148 transitions. [2024-06-28 00:07:13,727 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4625 [2024-06-28 00:07:13,727 INFO L175 Difference]: Start difference. First operand has 396 places, 307 transitions, 2782 flow. Second operand 10 states and 148 transitions. [2024-06-28 00:07:13,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 320 transitions, 3444 flow [2024-06-28 00:07:14,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 320 transitions, 3304 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-28 00:07:14,117 INFO L231 Difference]: Finished difference. Result has 397 places, 307 transitions, 2762 flow [2024-06-28 00:07:14,118 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2642, PETRI_DIFFERENCE_MINUEND_PLACES=387, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2762, PETRI_PLACES=397, PETRI_TRANSITIONS=307} [2024-06-28 00:07:14,118 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 366 predicate places. [2024-06-28 00:07:14,118 INFO L495 AbstractCegarLoop]: Abstraction has has 397 places, 307 transitions, 2762 flow [2024-06-28 00:07:14,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:14,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:14,118 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:07:14,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-28 00:07:14,118 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:07:14,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:14,119 INFO L85 PathProgramCache]: Analyzing trace with hash -638001994, now seen corresponding path program 9 times [2024-06-28 00:07:14,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:14,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056810181] [2024-06-28 00:07:14,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:14,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:14,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:16,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:07:16,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:16,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056810181] [2024-06-28 00:07:16,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056810181] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:16,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:16,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:07:16,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496286359] [2024-06-28 00:07:16,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:16,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:07:16,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:16,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:07:16,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:07:16,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:07:16,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 307 transitions, 2762 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:16,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:16,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:07:16,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:17,098 INFO L124 PetriNetUnfolderBase]: 697/1379 cut-off events. [2024-06-28 00:07:17,098 INFO L125 PetriNetUnfolderBase]: For 123942/123942 co-relation queries the response was YES. [2024-06-28 00:07:17,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7175 conditions, 1379 events. 697/1379 cut-off events. For 123942/123942 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 8719 event pairs, 101 based on Foata normal form. 2/1380 useless extension candidates. Maximal degree in co-relation 7015. Up to 944 conditions per place. [2024-06-28 00:07:17,113 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 259 selfloop transitions, 63 changer transitions 0/326 dead transitions. [2024-06-28 00:07:17,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 326 transitions, 3746 flow [2024-06-28 00:07:17,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:07:17,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:07:17,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 161 transitions. [2024-06-28 00:07:17,114 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45738636363636365 [2024-06-28 00:07:17,114 INFO L175 Difference]: Start difference. First operand has 397 places, 307 transitions, 2762 flow. Second operand 11 states and 161 transitions. [2024-06-28 00:07:17,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 326 transitions, 3746 flow [2024-06-28 00:07:17,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 326 transitions, 3626 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-28 00:07:17,677 INFO L231 Difference]: Finished difference. Result has 399 places, 309 transitions, 2811 flow [2024-06-28 00:07:17,677 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2642, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2811, PETRI_PLACES=399, PETRI_TRANSITIONS=309} [2024-06-28 00:07:17,678 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 368 predicate places. [2024-06-28 00:07:17,678 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 309 transitions, 2811 flow [2024-06-28 00:07:17,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:17,678 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:17,678 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:07:17,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-28 00:07:17,678 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:07:17,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:17,679 INFO L85 PathProgramCache]: Analyzing trace with hash -960053314, now seen corresponding path program 10 times [2024-06-28 00:07:17,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:17,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006185036] [2024-06-28 00:07:17,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:17,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:17,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:19,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:07:19,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:19,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006185036] [2024-06-28 00:07:19,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006185036] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:19,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:19,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:07:19,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519485504] [2024-06-28 00:07:19,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:19,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:07:19,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:19,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:07:19,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:07:19,638 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:07:19,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 309 transitions, 2811 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:19,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:19,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:07:19,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:20,113 INFO L124 PetriNetUnfolderBase]: 701/1387 cut-off events. [2024-06-28 00:07:20,114 INFO L125 PetriNetUnfolderBase]: For 126013/126013 co-relation queries the response was YES. [2024-06-28 00:07:20,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7277 conditions, 1387 events. 701/1387 cut-off events. For 126013/126013 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 8822 event pairs, 113 based on Foata normal form. 2/1388 useless extension candidates. Maximal degree in co-relation 7115. Up to 1161 conditions per place. [2024-06-28 00:07:20,134 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 258 selfloop transitions, 61 changer transitions 0/323 dead transitions. [2024-06-28 00:07:20,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 323 transitions, 3499 flow [2024-06-28 00:07:20,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:07:20,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:07:20,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 147 transitions. [2024-06-28 00:07:20,136 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.459375 [2024-06-28 00:07:20,136 INFO L175 Difference]: Start difference. First operand has 399 places, 309 transitions, 2811 flow. Second operand 10 states and 147 transitions. [2024-06-28 00:07:20,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 323 transitions, 3499 flow [2024-06-28 00:07:20,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 401 places, 323 transitions, 3398 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-28 00:07:20,678 INFO L231 Difference]: Finished difference. Result has 402 places, 310 transitions, 2858 flow [2024-06-28 00:07:20,679 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2714, PETRI_DIFFERENCE_MINUEND_PLACES=392, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2858, PETRI_PLACES=402, PETRI_TRANSITIONS=310} [2024-06-28 00:07:20,679 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 371 predicate places. [2024-06-28 00:07:20,679 INFO L495 AbstractCegarLoop]: Abstraction has has 402 places, 310 transitions, 2858 flow [2024-06-28 00:07:20,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:20,679 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:20,680 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:07:20,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-28 00:07:20,680 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:07:20,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:20,680 INFO L85 PathProgramCache]: Analyzing trace with hash -960058894, now seen corresponding path program 11 times [2024-06-28 00:07:20,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:20,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027921577] [2024-06-28 00:07:20,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:20,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:20,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:22,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:07:22,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:22,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027921577] [2024-06-28 00:07:22,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027921577] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:22,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:22,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:07:22,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057792555] [2024-06-28 00:07:22,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:22,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:07:22,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:22,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:07:22,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:07:22,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:07:22,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 310 transitions, 2858 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:22,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:22,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:07:22,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:23,401 INFO L124 PetriNetUnfolderBase]: 705/1395 cut-off events. [2024-06-28 00:07:23,401 INFO L125 PetriNetUnfolderBase]: For 127583/127583 co-relation queries the response was YES. [2024-06-28 00:07:23,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7371 conditions, 1395 events. 705/1395 cut-off events. For 127583/127583 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 8889 event pairs, 113 based on Foata normal form. 2/1396 useless extension candidates. Maximal degree in co-relation 7208. Up to 1145 conditions per place. [2024-06-28 00:07:23,414 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 258 selfloop transitions, 63 changer transitions 0/325 dead transitions. [2024-06-28 00:07:23,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 325 transitions, 3550 flow [2024-06-28 00:07:23,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:07:23,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:07:23,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 158 transitions. [2024-06-28 00:07:23,415 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44886363636363635 [2024-06-28 00:07:23,415 INFO L175 Difference]: Start difference. First operand has 402 places, 310 transitions, 2858 flow. Second operand 11 states and 158 transitions. [2024-06-28 00:07:23,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 325 transitions, 3550 flow [2024-06-28 00:07:23,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 404 places, 325 transitions, 3418 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-28 00:07:23,939 INFO L231 Difference]: Finished difference. Result has 405 places, 311 transitions, 2877 flow [2024-06-28 00:07:23,940 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2726, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2877, PETRI_PLACES=405, PETRI_TRANSITIONS=311} [2024-06-28 00:07:23,940 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 374 predicate places. [2024-06-28 00:07:23,940 INFO L495 AbstractCegarLoop]: Abstraction has has 405 places, 311 transitions, 2877 flow [2024-06-28 00:07:23,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:23,940 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:23,940 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:07:23,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-28 00:07:23,940 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:07:23,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:23,941 INFO L85 PathProgramCache]: Analyzing trace with hash -965565424, now seen corresponding path program 12 times [2024-06-28 00:07:23,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:23,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170873227] [2024-06-28 00:07:23,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:23,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:23,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:25,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:07:25,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:25,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170873227] [2024-06-28 00:07:25,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170873227] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:25,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:25,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:07:25,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802068592] [2024-06-28 00:07:25,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:25,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:07:25,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:25,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:07:25,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:07:26,028 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:07:26,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 311 transitions, 2877 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:26,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:26,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:07:26,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:26,440 INFO L124 PetriNetUnfolderBase]: 709/1403 cut-off events. [2024-06-28 00:07:26,440 INFO L125 PetriNetUnfolderBase]: For 129709/129709 co-relation queries the response was YES. [2024-06-28 00:07:26,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7433 conditions, 1403 events. 709/1403 cut-off events. For 129709/129709 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 8905 event pairs, 109 based on Foata normal form. 2/1404 useless extension candidates. Maximal degree in co-relation 7268. Up to 1082 conditions per place. [2024-06-28 00:07:26,456 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 260 selfloop transitions, 64 changer transitions 0/328 dead transitions. [2024-06-28 00:07:26,456 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 328 transitions, 3853 flow [2024-06-28 00:07:26,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:07:26,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:07:26,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 150 transitions. [2024-06-28 00:07:26,457 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46875 [2024-06-28 00:07:26,457 INFO L175 Difference]: Start difference. First operand has 405 places, 311 transitions, 2877 flow. Second operand 10 states and 150 transitions. [2024-06-28 00:07:26,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 328 transitions, 3853 flow [2024-06-28 00:07:26,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 328 transitions, 3716 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-28 00:07:26,939 INFO L231 Difference]: Finished difference. Result has 406 places, 312 transitions, 2893 flow [2024-06-28 00:07:26,940 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2740, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2893, PETRI_PLACES=406, PETRI_TRANSITIONS=312} [2024-06-28 00:07:26,940 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 375 predicate places. [2024-06-28 00:07:26,940 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 312 transitions, 2893 flow [2024-06-28 00:07:26,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:26,940 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:26,940 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:07:26,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-28 00:07:26,941 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:07:26,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:26,941 INFO L85 PathProgramCache]: Analyzing trace with hash 2066617360, now seen corresponding path program 13 times [2024-06-28 00:07:26,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:26,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357519991] [2024-06-28 00:07:26,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:26,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:26,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:28,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:07:28,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:28,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357519991] [2024-06-28 00:07:28,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357519991] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:28,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:28,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:07:28,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974083900] [2024-06-28 00:07:28,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:28,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:07:28,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:28,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:07:28,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:07:28,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:07:28,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 312 transitions, 2893 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:28,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:28,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:07:28,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:29,157 INFO L124 PetriNetUnfolderBase]: 713/1411 cut-off events. [2024-06-28 00:07:29,157 INFO L125 PetriNetUnfolderBase]: For 131833/131833 co-relation queries the response was YES. [2024-06-28 00:07:29,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7499 conditions, 1411 events. 713/1411 cut-off events. For 131833/131833 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 8975 event pairs, 115 based on Foata normal form. 2/1412 useless extension candidates. Maximal degree in co-relation 7334. Up to 1185 conditions per place. [2024-06-28 00:07:29,174 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 248 selfloop transitions, 74 changer transitions 0/326 dead transitions. [2024-06-28 00:07:29,174 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 326 transitions, 3589 flow [2024-06-28 00:07:29,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:07:29,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:07:29,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 154 transitions. [2024-06-28 00:07:29,175 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-28 00:07:29,175 INFO L175 Difference]: Start difference. First operand has 406 places, 312 transitions, 2893 flow. Second operand 11 states and 154 transitions. [2024-06-28 00:07:29,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 326 transitions, 3589 flow [2024-06-28 00:07:29,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 326 transitions, 3396 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-28 00:07:29,655 INFO L231 Difference]: Finished difference. Result has 408 places, 313 transitions, 2876 flow [2024-06-28 00:07:29,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2704, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2876, PETRI_PLACES=408, PETRI_TRANSITIONS=313} [2024-06-28 00:07:29,655 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 377 predicate places. [2024-06-28 00:07:29,655 INFO L495 AbstractCegarLoop]: Abstraction has has 408 places, 313 transitions, 2876 flow [2024-06-28 00:07:29,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:29,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:29,656 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:07:29,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-28 00:07:29,656 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:07:29,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:29,656 INFO L85 PathProgramCache]: Analyzing trace with hash -765912094, now seen corresponding path program 14 times [2024-06-28 00:07:29,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:29,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578522780] [2024-06-28 00:07:29,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:29,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:29,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:31,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:07:31,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:31,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578522780] [2024-06-28 00:07:31,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578522780] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:31,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:31,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:07:31,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700339478] [2024-06-28 00:07:31,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:31,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:07:31,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:31,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:07:31,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:07:31,551 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:07:31,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 313 transitions, 2876 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:31,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:31,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:07:31,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:32,147 INFO L124 PetriNetUnfolderBase]: 717/1419 cut-off events. [2024-06-28 00:07:32,147 INFO L125 PetriNetUnfolderBase]: For 133499/133499 co-relation queries the response was YES. [2024-06-28 00:07:32,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7447 conditions, 1419 events. 717/1419 cut-off events. For 133499/133499 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 9056 event pairs, 117 based on Foata normal form. 2/1420 useless extension candidates. Maximal degree in co-relation 7281. Up to 1193 conditions per place. [2024-06-28 00:07:32,163 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 256 selfloop transitions, 67 changer transitions 0/327 dead transitions. [2024-06-28 00:07:32,163 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 327 transitions, 3572 flow [2024-06-28 00:07:32,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:07:32,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:07:32,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 155 transitions. [2024-06-28 00:07:32,164 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4403409090909091 [2024-06-28 00:07:32,164 INFO L175 Difference]: Start difference. First operand has 408 places, 313 transitions, 2876 flow. Second operand 11 states and 155 transitions. [2024-06-28 00:07:32,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 327 transitions, 3572 flow [2024-06-28 00:07:32,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 327 transitions, 3412 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-28 00:07:32,701 INFO L231 Difference]: Finished difference. Result has 410 places, 314 transitions, 2876 flow [2024-06-28 00:07:32,702 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2716, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2876, PETRI_PLACES=410, PETRI_TRANSITIONS=314} [2024-06-28 00:07:32,702 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 379 predicate places. [2024-06-28 00:07:32,702 INFO L495 AbstractCegarLoop]: Abstraction has has 410 places, 314 transitions, 2876 flow [2024-06-28 00:07:32,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:32,702 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:32,702 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:07:32,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-28 00:07:32,702 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:07:32,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:32,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1809909460, now seen corresponding path program 15 times [2024-06-28 00:07:32,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:32,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061675326] [2024-06-28 00:07:32,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:32,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:32,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:34,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:07:34,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:34,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061675326] [2024-06-28 00:07:34,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061675326] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:34,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:34,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:07:34,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201709319] [2024-06-28 00:07:34,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:34,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:07:34,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:34,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:07:34,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:07:34,644 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:07:34,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 314 transitions, 2876 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:34,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:34,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:07:34,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:35,132 INFO L124 PetriNetUnfolderBase]: 714/1418 cut-off events. [2024-06-28 00:07:35,133 INFO L125 PetriNetUnfolderBase]: For 115926/115926 co-relation queries the response was YES. [2024-06-28 00:07:35,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7126 conditions, 1418 events. 714/1418 cut-off events. For 115926/115926 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 9024 event pairs, 116 based on Foata normal form. 2/1419 useless extension candidates. Maximal degree in co-relation 6959. Up to 1158 conditions per place. [2024-06-28 00:07:35,149 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 255 selfloop transitions, 69 changer transitions 0/328 dead transitions. [2024-06-28 00:07:35,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 328 transitions, 3556 flow [2024-06-28 00:07:35,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:07:35,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:07:35,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 156 transitions. [2024-06-28 00:07:35,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4431818181818182 [2024-06-28 00:07:35,151 INFO L175 Difference]: Start difference. First operand has 410 places, 314 transitions, 2876 flow. Second operand 11 states and 156 transitions. [2024-06-28 00:07:35,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 328 transitions, 3556 flow [2024-06-28 00:07:35,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 328 transitions, 3398 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-28 00:07:35,664 INFO L231 Difference]: Finished difference. Result has 412 places, 314 transitions, 2861 flow [2024-06-28 00:07:35,664 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2718, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2861, PETRI_PLACES=412, PETRI_TRANSITIONS=314} [2024-06-28 00:07:35,664 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 381 predicate places. [2024-06-28 00:07:35,665 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 314 transitions, 2861 flow [2024-06-28 00:07:35,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:35,665 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:35,665 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:07:35,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-28 00:07:35,665 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:07:35,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:35,665 INFO L85 PathProgramCache]: Analyzing trace with hash 2076148496, now seen corresponding path program 2 times [2024-06-28 00:07:35,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:35,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734238800] [2024-06-28 00:07:35,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:35,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:35,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:37,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:07:37,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:37,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734238800] [2024-06-28 00:07:37,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734238800] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:37,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:37,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:07:37,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745939795] [2024-06-28 00:07:37,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:37,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:07:37,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:37,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:07:37,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:07:37,705 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:07:37,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 314 transitions, 2861 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-06-28 00:07:37,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:37,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:07:37,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:38,261 INFO L124 PetriNetUnfolderBase]: 744/1484 cut-off events. [2024-06-28 00:07:38,261 INFO L125 PetriNetUnfolderBase]: For 229583/229583 co-relation queries the response was YES. [2024-06-28 00:07:38,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8673 conditions, 1484 events. 744/1484 cut-off events. For 229583/229583 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 9489 event pairs, 128 based on Foata normal form. 6/1489 useless extension candidates. Maximal degree in co-relation 8505. Up to 1146 conditions per place. [2024-06-28 00:07:38,281 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 243 selfloop transitions, 82 changer transitions 6/335 dead transitions. [2024-06-28 00:07:38,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 423 places, 335 transitions, 3969 flow [2024-06-28 00:07:38,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:07:38,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:07:38,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 172 transitions. [2024-06-28 00:07:38,282 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4479166666666667 [2024-06-28 00:07:38,283 INFO L175 Difference]: Start difference. First operand has 412 places, 314 transitions, 2861 flow. Second operand 12 states and 172 transitions. [2024-06-28 00:07:38,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 423 places, 335 transitions, 3969 flow [2024-06-28 00:07:39,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 335 transitions, 3810 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-28 00:07:39,093 INFO L231 Difference]: Finished difference. Result has 414 places, 312 transitions, 2858 flow [2024-06-28 00:07:39,093 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2702, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2858, PETRI_PLACES=414, PETRI_TRANSITIONS=312} [2024-06-28 00:07:39,093 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 383 predicate places. [2024-06-28 00:07:39,093 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 312 transitions, 2858 flow [2024-06-28 00:07:39,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-06-28 00:07:39,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:39,094 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:07:39,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-28 00:07:39,094 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:07:39,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:39,094 INFO L85 PathProgramCache]: Analyzing trace with hash 784664562, now seen corresponding path program 3 times [2024-06-28 00:07:39,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:39,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795033682] [2024-06-28 00:07:39,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:39,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:39,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:41,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:07:41,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:41,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795033682] [2024-06-28 00:07:41,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795033682] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:41,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:41,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:07:41,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725205203] [2024-06-28 00:07:41,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:41,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:07:41,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:41,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:07:41,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:07:41,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:07:41,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 312 transitions, 2858 flow. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:41,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:41,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:07:41,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:42,214 INFO L124 PetriNetUnfolderBase]: 742/1478 cut-off events. [2024-06-28 00:07:42,214 INFO L125 PetriNetUnfolderBase]: For 255519/255519 co-relation queries the response was YES. [2024-06-28 00:07:42,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8738 conditions, 1478 events. 742/1478 cut-off events. For 255519/255519 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 9432 event pairs, 132 based on Foata normal form. 8/1485 useless extension candidates. Maximal degree in co-relation 8569. Up to 1223 conditions per place. [2024-06-28 00:07:42,232 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 259 selfloop transitions, 57 changer transitions 9/329 dead transitions. [2024-06-28 00:07:42,232 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 423 places, 329 transitions, 3624 flow [2024-06-28 00:07:42,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:07:42,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:07:42,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 171 transitions. [2024-06-28 00:07:42,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4453125 [2024-06-28 00:07:42,234 INFO L175 Difference]: Start difference. First operand has 414 places, 312 transitions, 2858 flow. Second operand 12 states and 171 transitions. [2024-06-28 00:07:42,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 423 places, 329 transitions, 3624 flow [2024-06-28 00:07:43,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 329 transitions, 3466 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-28 00:07:43,138 INFO L231 Difference]: Finished difference. Result has 413 places, 309 transitions, 2795 flow [2024-06-28 00:07:43,138 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2700, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2795, PETRI_PLACES=413, PETRI_TRANSITIONS=309} [2024-06-28 00:07:43,138 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 382 predicate places. [2024-06-28 00:07:43,138 INFO L495 AbstractCegarLoop]: Abstraction has has 413 places, 309 transitions, 2795 flow [2024-06-28 00:07:43,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:43,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:43,138 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:07:43,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-28 00:07:43,138 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:07:43,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:43,139 INFO L85 PathProgramCache]: Analyzing trace with hash 2066625296, now seen corresponding path program 4 times [2024-06-28 00:07:43,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:43,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591728089] [2024-06-28 00:07:43,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:43,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:43,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:45,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:07:45,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:45,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591728089] [2024-06-28 00:07:45,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591728089] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:45,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:45,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:07:45,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366185814] [2024-06-28 00:07:45,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:45,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:07:45,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:45,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:07:45,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:07:45,355 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:07:45,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 309 transitions, 2795 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-06-28 00:07:45,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:45,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:07:45,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:45,911 INFO L124 PetriNetUnfolderBase]: 737/1471 cut-off events. [2024-06-28 00:07:45,911 INFO L125 PetriNetUnfolderBase]: For 250849/250849 co-relation queries the response was YES. [2024-06-28 00:07:45,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8653 conditions, 1471 events. 737/1471 cut-off events. For 250849/250849 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 9417 event pairs, 132 based on Foata normal form. 8/1478 useless extension candidates. Maximal degree in co-relation 8485. Up to 1216 conditions per place. [2024-06-28 00:07:45,928 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 242 selfloop transitions, 71 changer transitions 9/326 dead transitions. [2024-06-28 00:07:45,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 326 transitions, 3555 flow [2024-06-28 00:07:45,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:07:45,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:07:45,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 168 transitions. [2024-06-28 00:07:45,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-28 00:07:45,929 INFO L175 Difference]: Start difference. First operand has 413 places, 309 transitions, 2795 flow. Second operand 12 states and 168 transitions. [2024-06-28 00:07:45,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 326 transitions, 3555 flow [2024-06-28 00:07:46,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 326 transitions, 3429 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-28 00:07:46,706 INFO L231 Difference]: Finished difference. Result has 411 places, 306 transitions, 2796 flow [2024-06-28 00:07:46,707 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2673, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2796, PETRI_PLACES=411, PETRI_TRANSITIONS=306} [2024-06-28 00:07:46,707 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 380 predicate places. [2024-06-28 00:07:46,707 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 306 transitions, 2796 flow [2024-06-28 00:07:46,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-06-28 00:07:46,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:46,707 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:07:46,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-28 00:07:46,708 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:07:46,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:46,708 INFO L85 PathProgramCache]: Analyzing trace with hash -959843568, now seen corresponding path program 5 times [2024-06-28 00:07:46,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:46,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307624662] [2024-06-28 00:07:46,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:46,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:46,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:48,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:07:48,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:48,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307624662] [2024-06-28 00:07:48,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307624662] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:48,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:48,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:07:48,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432744791] [2024-06-28 00:07:48,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:48,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:07:48,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:48,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:07:48,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:07:48,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:07:48,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 306 transitions, 2796 flow. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:48,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:48,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:07:48,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:49,438 INFO L124 PetriNetUnfolderBase]: 732/1464 cut-off events. [2024-06-28 00:07:49,438 INFO L125 PetriNetUnfolderBase]: For 247061/247061 co-relation queries the response was YES. [2024-06-28 00:07:49,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8594 conditions, 1464 events. 732/1464 cut-off events. For 247061/247061 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 9384 event pairs, 132 based on Foata normal form. 8/1471 useless extension candidates. Maximal degree in co-relation 8427. Up to 1209 conditions per place. [2024-06-28 00:07:49,505 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 252 selfloop transitions, 58 changer transitions 9/323 dead transitions. [2024-06-28 00:07:49,505 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 323 transitions, 3546 flow [2024-06-28 00:07:49,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:07:49,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:07:49,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 170 transitions. [2024-06-28 00:07:49,506 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4427083333333333 [2024-06-28 00:07:49,506 INFO L175 Difference]: Start difference. First operand has 411 places, 306 transitions, 2796 flow. Second operand 12 states and 170 transitions. [2024-06-28 00:07:49,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 323 transitions, 3546 flow [2024-06-28 00:07:50,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 323 transitions, 3392 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-28 00:07:50,370 INFO L231 Difference]: Finished difference. Result has 409 places, 303 transitions, 2743 flow [2024-06-28 00:07:50,371 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2646, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2743, PETRI_PLACES=409, PETRI_TRANSITIONS=303} [2024-06-28 00:07:50,371 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 378 predicate places. [2024-06-28 00:07:50,371 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 303 transitions, 2743 flow [2024-06-28 00:07:50,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:50,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:50,372 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:07:50,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-28 00:07:50,372 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:07:50,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:50,373 INFO L85 PathProgramCache]: Analyzing trace with hash 2075822066, now seen corresponding path program 6 times [2024-06-28 00:07:50,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:50,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073026768] [2024-06-28 00:07:50,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:50,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:50,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:52,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:07:52,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:52,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073026768] [2024-06-28 00:07:52,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073026768] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:52,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:52,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:07:52,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435649453] [2024-06-28 00:07:52,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:52,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:07:52,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:52,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:07:52,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:07:52,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:07:52,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 303 transitions, 2743 flow. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:52,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:52,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:07:52,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:52,695 INFO L124 PetriNetUnfolderBase]: 727/1457 cut-off events. [2024-06-28 00:07:52,695 INFO L125 PetriNetUnfolderBase]: For 245224/245224 co-relation queries the response was YES. [2024-06-28 00:07:52,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8481 conditions, 1457 events. 727/1457 cut-off events. For 245224/245224 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 9318 event pairs, 132 based on Foata normal form. 8/1464 useless extension candidates. Maximal degree in co-relation 8315. Up to 1196 conditions per place. [2024-06-28 00:07:52,711 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 236 selfloop transitions, 70 changer transitions 10/320 dead transitions. [2024-06-28 00:07:52,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 320 transitions, 3483 flow [2024-06-28 00:07:52,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:07:52,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:07:52,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 169 transitions. [2024-06-28 00:07:52,712 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4401041666666667 [2024-06-28 00:07:52,712 INFO L175 Difference]: Start difference. First operand has 409 places, 303 transitions, 2743 flow. Second operand 12 states and 169 transitions. [2024-06-28 00:07:52,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 320 transitions, 3483 flow [2024-06-28 00:07:53,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 320 transitions, 3355 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-28 00:07:53,543 INFO L231 Difference]: Finished difference. Result has 407 places, 299 transitions, 2734 flow [2024-06-28 00:07:53,543 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2619, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2734, PETRI_PLACES=407, PETRI_TRANSITIONS=299} [2024-06-28 00:07:53,544 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 376 predicate places. [2024-06-28 00:07:53,544 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 299 transitions, 2734 flow [2024-06-28 00:07:53,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:53,544 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:53,544 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:07:53,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-28 00:07:53,544 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:07:53,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:53,545 INFO L85 PathProgramCache]: Analyzing trace with hash -765904158, now seen corresponding path program 7 times [2024-06-28 00:07:53,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:53,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884728397] [2024-06-28 00:07:53,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:53,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:53,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:55,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:07:55,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:55,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884728397] [2024-06-28 00:07:55,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884728397] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:55,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:55,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:07:55,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189070561] [2024-06-28 00:07:55,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:55,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:07:55,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:55,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:07:55,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:07:55,694 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:07:55,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 299 transitions, 2734 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-06-28 00:07:55,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:55,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:07:55,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:56,312 INFO L124 PetriNetUnfolderBase]: 699/1399 cut-off events. [2024-06-28 00:07:56,312 INFO L125 PetriNetUnfolderBase]: For 168806/168806 co-relation queries the response was YES. [2024-06-28 00:07:56,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7020 conditions, 1399 events. 699/1399 cut-off events. For 168806/168806 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 8894 event pairs, 120 based on Foata normal form. 8/1406 useless extension candidates. Maximal degree in co-relation 6855. Up to 1146 conditions per place. [2024-06-28 00:07:56,327 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 242 selfloop transitions, 61 changer transitions 9/316 dead transitions. [2024-06-28 00:07:56,327 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 316 transitions, 3462 flow [2024-06-28 00:07:56,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:07:56,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:07:56,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 167 transitions. [2024-06-28 00:07:56,328 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4348958333333333 [2024-06-28 00:07:56,328 INFO L175 Difference]: Start difference. First operand has 407 places, 299 transitions, 2734 flow. Second operand 12 states and 167 transitions. [2024-06-28 00:07:56,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 316 transitions, 3462 flow [2024-06-28 00:07:56,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 316 transitions, 3304 flow, removed 9 selfloop flow, removed 12 redundant places. [2024-06-28 00:07:56,774 INFO L231 Difference]: Finished difference. Result has 403 places, 296 transitions, 2685 flow [2024-06-28 00:07:56,774 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2582, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2685, PETRI_PLACES=403, PETRI_TRANSITIONS=296} [2024-06-28 00:07:56,775 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 372 predicate places. [2024-06-28 00:07:56,775 INFO L495 AbstractCegarLoop]: Abstraction has has 403 places, 296 transitions, 2685 flow [2024-06-28 00:07:56,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-06-28 00:07:56,775 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:56,775 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:07:56,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-28 00:07:56,776 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:07:56,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:56,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1484153020, now seen corresponding path program 16 times [2024-06-28 00:07:56,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:56,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713366098] [2024-06-28 00:07:56,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:56,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:56,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:58,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:07:58,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:58,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713366098] [2024-06-28 00:07:58,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713366098] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:58,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:58,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:07:58,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832687109] [2024-06-28 00:07:58,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:58,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:07:58,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:58,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:07:58,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:07:58,612 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:07:58,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 296 transitions, 2685 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:58,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:58,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:07:58,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:59,119 INFO L124 PetriNetUnfolderBase]: 686/1369 cut-off events. [2024-06-28 00:07:59,119 INFO L125 PetriNetUnfolderBase]: For 110088/110088 co-relation queries the response was YES. [2024-06-28 00:07:59,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6783 conditions, 1369 events. 686/1369 cut-off events. For 110088/110088 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 8734 event pairs, 122 based on Foata normal form. 2/1365 useless extension candidates. Maximal degree in co-relation 6620. Up to 1046 conditions per place. [2024-06-28 00:07:59,133 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 216 selfloop transitions, 88 changer transitions 0/308 dead transitions. [2024-06-28 00:07:59,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 308 transitions, 3335 flow [2024-06-28 00:07:59,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:07:59,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:07:59,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 160 transitions. [2024-06-28 00:07:59,134 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-28 00:07:59,134 INFO L175 Difference]: Start difference. First operand has 403 places, 296 transitions, 2685 flow. Second operand 11 states and 160 transitions. [2024-06-28 00:07:59,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 308 transitions, 3335 flow [2024-06-28 00:07:59,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 308 transitions, 3205 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-28 00:07:59,629 INFO L231 Difference]: Finished difference. Result has 399 places, 297 transitions, 2755 flow [2024-06-28 00:07:59,629 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2555, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2755, PETRI_PLACES=399, PETRI_TRANSITIONS=297} [2024-06-28 00:07:59,629 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 368 predicate places. [2024-06-28 00:07:59,629 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 297 transitions, 2755 flow [2024-06-28 00:07:59,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:59,629 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:59,630 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:07:59,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-28 00:07:59,630 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:07:59,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:59,630 INFO L85 PathProgramCache]: Analyzing trace with hash -1740855340, now seen corresponding path program 17 times [2024-06-28 00:07:59,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:59,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881767954] [2024-06-28 00:07:59,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:59,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:59,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:01,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:08:01,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:01,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881767954] [2024-06-28 00:08:01,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881767954] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:01,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:01,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:08:01,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603770235] [2024-06-28 00:08:01,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:01,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:08:01,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:01,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:08:01,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:08:01,568 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:08:01,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 297 transitions, 2755 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:01,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:01,568 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:08:01,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:02,174 INFO L124 PetriNetUnfolderBase]: 690/1377 cut-off events. [2024-06-28 00:08:02,174 INFO L125 PetriNetUnfolderBase]: For 108864/108864 co-relation queries the response was YES. [2024-06-28 00:08:02,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6877 conditions, 1377 events. 690/1377 cut-off events. For 108864/108864 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 8779 event pairs, 124 based on Foata normal form. 2/1373 useless extension candidates. Maximal degree in co-relation 6715. Up to 1054 conditions per place. [2024-06-28 00:08:02,187 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 219 selfloop transitions, 86 changer transitions 0/309 dead transitions. [2024-06-28 00:08:02,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 309 transitions, 3409 flow [2024-06-28 00:08:02,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:08:02,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:08:02,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 161 transitions. [2024-06-28 00:08:02,188 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45738636363636365 [2024-06-28 00:08:02,188 INFO L175 Difference]: Start difference. First operand has 399 places, 297 transitions, 2755 flow. Second operand 11 states and 161 transitions. [2024-06-28 00:08:02,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 309 transitions, 3409 flow [2024-06-28 00:08:02,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 309 transitions, 3219 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-28 00:08:02,660 INFO L231 Difference]: Finished difference. Result has 401 places, 298 transitions, 2763 flow [2024-06-28 00:08:02,660 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2565, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2763, PETRI_PLACES=401, PETRI_TRANSITIONS=298} [2024-06-28 00:08:02,660 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 370 predicate places. [2024-06-28 00:08:02,660 INFO L495 AbstractCegarLoop]: Abstraction has has 401 places, 298 transitions, 2763 flow [2024-06-28 00:08:02,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:02,660 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:02,661 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:08:02,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-28 00:08:02,661 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:08:02,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:02,661 INFO L85 PathProgramCache]: Analyzing trace with hash -1714101850, now seen corresponding path program 18 times [2024-06-28 00:08:02,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:02,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311969331] [2024-06-28 00:08:02,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:02,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:02,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:04,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:08:04,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:04,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311969331] [2024-06-28 00:08:04,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311969331] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:04,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:04,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:08:04,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330030721] [2024-06-28 00:08:04,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:04,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:08:04,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:04,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:08:04,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:08:04,460 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:08:04,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 298 transitions, 2763 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:04,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:04,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:08:04,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:04,960 INFO L124 PetriNetUnfolderBase]: 694/1385 cut-off events. [2024-06-28 00:08:04,961 INFO L125 PetriNetUnfolderBase]: For 110558/110558 co-relation queries the response was YES. [2024-06-28 00:08:04,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6920 conditions, 1385 events. 694/1385 cut-off events. For 110558/110558 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 8837 event pairs, 122 based on Foata normal form. 2/1381 useless extension candidates. Maximal degree in co-relation 6757. Up to 1042 conditions per place. [2024-06-28 00:08:04,976 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 219 selfloop transitions, 88 changer transitions 0/311 dead transitions. [2024-06-28 00:08:04,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 311 transitions, 3425 flow [2024-06-28 00:08:04,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:08:04,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:08:04,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 162 transitions. [2024-06-28 00:08:04,977 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4602272727272727 [2024-06-28 00:08:04,977 INFO L175 Difference]: Start difference. First operand has 401 places, 298 transitions, 2763 flow. Second operand 11 states and 162 transitions. [2024-06-28 00:08:04,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 311 transitions, 3425 flow [2024-06-28 00:08:05,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 311 transitions, 3237 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-28 00:08:05,399 INFO L231 Difference]: Finished difference. Result has 403 places, 299 transitions, 2779 flow [2024-06-28 00:08:05,399 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2575, PETRI_DIFFERENCE_MINUEND_PLACES=392, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2779, PETRI_PLACES=403, PETRI_TRANSITIONS=299} [2024-06-28 00:08:05,400 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 372 predicate places. [2024-06-28 00:08:05,400 INFO L495 AbstractCegarLoop]: Abstraction has has 403 places, 299 transitions, 2779 flow [2024-06-28 00:08:05,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:05,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:05,400 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:08:05,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-28 00:08:05,400 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:08:05,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:05,400 INFO L85 PathProgramCache]: Analyzing trace with hash 512031748, now seen corresponding path program 19 times [2024-06-28 00:08:05,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:05,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294759929] [2024-06-28 00:08:05,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:05,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:05,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:07,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:08:07,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:07,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294759929] [2024-06-28 00:08:07,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294759929] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:07,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:07,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:08:07,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68485576] [2024-06-28 00:08:07,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:07,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:08:07,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:07,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:08:07,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:08:07,410 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:08:07,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 299 transitions, 2779 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:07,410 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:07,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:08:07,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:07,924 INFO L124 PetriNetUnfolderBase]: 698/1393 cut-off events. [2024-06-28 00:08:07,924 INFO L125 PetriNetUnfolderBase]: For 112466/112466 co-relation queries the response was YES. [2024-06-28 00:08:07,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6977 conditions, 1393 events. 698/1393 cut-off events. For 112466/112466 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 8904 event pairs, 124 based on Foata normal form. 2/1389 useless extension candidates. Maximal degree in co-relation 6813. Up to 1070 conditions per place. [2024-06-28 00:08:07,939 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 214 selfloop transitions, 93 changer transitions 0/311 dead transitions. [2024-06-28 00:08:07,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 311 transitions, 3441 flow [2024-06-28 00:08:07,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:08:07,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:08:07,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 159 transitions. [2024-06-28 00:08:07,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45170454545454547 [2024-06-28 00:08:07,940 INFO L175 Difference]: Start difference. First operand has 403 places, 299 transitions, 2779 flow. Second operand 11 states and 159 transitions. [2024-06-28 00:08:07,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 311 transitions, 3441 flow [2024-06-28 00:08:08,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 404 places, 311 transitions, 3247 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-28 00:08:08,465 INFO L231 Difference]: Finished difference. Result has 405 places, 300 transitions, 2801 flow [2024-06-28 00:08:08,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2585, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2801, PETRI_PLACES=405, PETRI_TRANSITIONS=300} [2024-06-28 00:08:08,465 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 374 predicate places. [2024-06-28 00:08:08,465 INFO L495 AbstractCegarLoop]: Abstraction has has 405 places, 300 transitions, 2801 flow [2024-06-28 00:08:08,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:08,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:08,466 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:08:08,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-28 00:08:08,466 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:08:08,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:08,467 INFO L85 PathProgramCache]: Analyzing trace with hash -492368586, now seen corresponding path program 20 times [2024-06-28 00:08:08,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:08,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461891660] [2024-06-28 00:08:08,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:08,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:08,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:10,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:08:10,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:10,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461891660] [2024-06-28 00:08:10,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461891660] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:10,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:10,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:08:10,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139582152] [2024-06-28 00:08:10,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:10,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:08:10,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:10,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:08:10,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:08:10,440 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:08:10,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 300 transitions, 2801 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:10,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:10,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:08:10,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:10,957 INFO L124 PetriNetUnfolderBase]: 702/1401 cut-off events. [2024-06-28 00:08:10,957 INFO L125 PetriNetUnfolderBase]: For 114211/114211 co-relation queries the response was YES. [2024-06-28 00:08:10,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7030 conditions, 1401 events. 702/1401 cut-off events. For 114211/114211 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 8942 event pairs, 124 based on Foata normal form. 2/1397 useless extension candidates. Maximal degree in co-relation 6865. Up to 1078 conditions per place. [2024-06-28 00:08:10,975 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 204 selfloop transitions, 104 changer transitions 0/312 dead transitions. [2024-06-28 00:08:10,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 312 transitions, 3467 flow [2024-06-28 00:08:10,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:08:10,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:08:10,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 158 transitions. [2024-06-28 00:08:10,976 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44886363636363635 [2024-06-28 00:08:10,976 INFO L175 Difference]: Start difference. First operand has 405 places, 300 transitions, 2801 flow. Second operand 11 states and 158 transitions. [2024-06-28 00:08:10,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 312 transitions, 3467 flow [2024-06-28 00:08:11,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 312 transitions, 3261 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-28 00:08:11,404 INFO L231 Difference]: Finished difference. Result has 407 places, 301 transitions, 2835 flow [2024-06-28 00:08:11,404 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2595, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2835, PETRI_PLACES=407, PETRI_TRANSITIONS=301} [2024-06-28 00:08:11,404 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 376 predicate places. [2024-06-28 00:08:11,404 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 301 transitions, 2835 flow [2024-06-28 00:08:11,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:11,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:11,405 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:08:11,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-28 00:08:11,405 INFO L420 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:08:11,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:11,405 INFO L85 PathProgramCache]: Analyzing trace with hash -1040463052, now seen corresponding path program 21 times [2024-06-28 00:08:11,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:11,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575880560] [2024-06-28 00:08:11,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:11,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:11,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:13,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:08:13,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:13,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575880560] [2024-06-28 00:08:13,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575880560] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:13,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:13,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:08:13,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942460070] [2024-06-28 00:08:13,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:13,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:08:13,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:13,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:08:13,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:08:13,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:08:13,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 301 transitions, 2835 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:13,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:13,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:08:13,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:13,970 INFO L124 PetriNetUnfolderBase]: 706/1409 cut-off events. [2024-06-28 00:08:13,970 INFO L125 PetriNetUnfolderBase]: For 116026/116026 co-relation queries the response was YES. [2024-06-28 00:08:13,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7099 conditions, 1409 events. 706/1409 cut-off events. For 116026/116026 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 9036 event pairs, 124 based on Foata normal form. 2/1405 useless extension candidates. Maximal degree in co-relation 6933. Up to 1086 conditions per place. [2024-06-28 00:08:13,986 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 217 selfloop transitions, 92 changer transitions 0/313 dead transitions. [2024-06-28 00:08:13,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 313 transitions, 3505 flow [2024-06-28 00:08:13,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:08:13,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:08:13,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 160 transitions. [2024-06-28 00:08:13,986 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-28 00:08:13,987 INFO L175 Difference]: Start difference. First operand has 407 places, 301 transitions, 2835 flow. Second operand 11 states and 160 transitions. [2024-06-28 00:08:13,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 313 transitions, 3505 flow [2024-06-28 00:08:14,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 313 transitions, 3275 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-28 00:08:14,474 INFO L231 Difference]: Finished difference. Result has 409 places, 302 transitions, 2823 flow [2024-06-28 00:08:14,475 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2605, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2823, PETRI_PLACES=409, PETRI_TRANSITIONS=302} [2024-06-28 00:08:14,475 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 378 predicate places. [2024-06-28 00:08:14,475 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 302 transitions, 2823 flow [2024-06-28 00:08:14,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:14,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:14,475 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:08:14,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-28 00:08:14,475 INFO L420 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:08:14,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:14,476 INFO L85 PathProgramCache]: Analyzing trace with hash -215654588, now seen corresponding path program 22 times [2024-06-28 00:08:14,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:14,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402683279] [2024-06-28 00:08:14,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:14,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:14,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:16,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:08:16,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:16,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402683279] [2024-06-28 00:08:16,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402683279] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:16,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:16,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:08:16,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115958775] [2024-06-28 00:08:16,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:16,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:08:16,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:16,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:08:16,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:08:16,227 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:08:16,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 302 transitions, 2823 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:16,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:16,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:08:16,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:16,744 INFO L124 PetriNetUnfolderBase]: 710/1417 cut-off events. [2024-06-28 00:08:16,744 INFO L125 PetriNetUnfolderBase]: For 117849/117849 co-relation queries the response was YES. [2024-06-28 00:08:16,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7122 conditions, 1417 events. 710/1417 cut-off events. For 117849/117849 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 9079 event pairs, 124 based on Foata normal form. 2/1413 useless extension candidates. Maximal degree in co-relation 6955. Up to 1094 conditions per place. [2024-06-28 00:08:16,759 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 225 selfloop transitions, 85 changer transitions 0/314 dead transitions. [2024-06-28 00:08:16,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 314 transitions, 3497 flow [2024-06-28 00:08:16,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:08:16,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:08:16,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 162 transitions. [2024-06-28 00:08:16,760 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4602272727272727 [2024-06-28 00:08:16,760 INFO L175 Difference]: Start difference. First operand has 409 places, 302 transitions, 2823 flow. Second operand 11 states and 162 transitions. [2024-06-28 00:08:16,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 314 transitions, 3497 flow [2024-06-28 00:08:17,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 314 transitions, 3289 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-28 00:08:17,237 INFO L231 Difference]: Finished difference. Result has 411 places, 303 transitions, 2821 flow [2024-06-28 00:08:17,238 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2615, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2821, PETRI_PLACES=411, PETRI_TRANSITIONS=303} [2024-06-28 00:08:17,238 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 380 predicate places. [2024-06-28 00:08:17,238 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 303 transitions, 2821 flow [2024-06-28 00:08:17,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:17,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:17,238 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:08:17,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-28 00:08:17,238 INFO L420 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:08:17,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:17,239 INFO L85 PathProgramCache]: Analyzing trace with hash 643391186, now seen corresponding path program 23 times [2024-06-28 00:08:17,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:17,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599319984] [2024-06-28 00:08:17,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:17,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:17,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:19,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:08:19,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:19,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599319984] [2024-06-28 00:08:19,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599319984] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:19,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:19,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:08:19,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774064319] [2024-06-28 00:08:19,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:19,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:08:19,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:19,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:08:19,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:08:19,158 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:08:19,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 303 transitions, 2821 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:19,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:19,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:08:19,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:19,799 INFO L124 PetriNetUnfolderBase]: 714/1425 cut-off events. [2024-06-28 00:08:19,799 INFO L125 PetriNetUnfolderBase]: For 119522/119522 co-relation queries the response was YES. [2024-06-28 00:08:19,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7155 conditions, 1425 events. 714/1425 cut-off events. For 119522/119522 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 9145 event pairs, 126 based on Foata normal form. 2/1421 useless extension candidates. Maximal degree in co-relation 6987. Up to 1102 conditions per place. [2024-06-28 00:08:19,816 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 206 selfloop transitions, 105 changer transitions 0/315 dead transitions. [2024-06-28 00:08:19,816 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 315 transitions, 3499 flow [2024-06-28 00:08:19,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:08:19,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:08:19,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 157 transitions. [2024-06-28 00:08:19,817 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4460227272727273 [2024-06-28 00:08:19,817 INFO L175 Difference]: Start difference. First operand has 411 places, 303 transitions, 2821 flow. Second operand 11 states and 157 transitions. [2024-06-28 00:08:19,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 315 transitions, 3499 flow [2024-06-28 00:08:20,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 315 transitions, 3303 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-28 00:08:20,314 INFO L231 Difference]: Finished difference. Result has 413 places, 304 transitions, 2873 flow [2024-06-28 00:08:20,314 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2625, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2873, PETRI_PLACES=413, PETRI_TRANSITIONS=304} [2024-06-28 00:08:20,314 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 382 predicate places. [2024-06-28 00:08:20,314 INFO L495 AbstractCegarLoop]: Abstraction has has 413 places, 304 transitions, 2873 flow [2024-06-28 00:08:20,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:20,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:20,315 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:08:20,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-28 00:08:20,315 INFO L420 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:08:20,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:20,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1913403640, now seen corresponding path program 24 times [2024-06-28 00:08:20,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:20,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851995246] [2024-06-28 00:08:20,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:20,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:20,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:22,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:08:22,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:22,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851995246] [2024-06-28 00:08:22,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851995246] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:22,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:22,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:08:22,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585122126] [2024-06-28 00:08:22,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:22,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:08:22,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:22,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:08:22,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:08:22,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:08:22,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 304 transitions, 2873 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:22,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:22,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:08:22,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:23,091 INFO L124 PetriNetUnfolderBase]: 718/1437 cut-off events. [2024-06-28 00:08:23,091 INFO L125 PetriNetUnfolderBase]: For 121092/121092 co-relation queries the response was YES. [2024-06-28 00:08:23,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7246 conditions, 1437 events. 718/1437 cut-off events. For 121092/121092 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 9203 event pairs, 128 based on Foata normal form. 2/1433 useless extension candidates. Maximal degree in co-relation 7077. Up to 1096 conditions per place. [2024-06-28 00:08:23,109 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 227 selfloop transitions, 86 changer transitions 0/317 dead transitions. [2024-06-28 00:08:23,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 423 places, 317 transitions, 3559 flow [2024-06-28 00:08:23,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:08:23,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:08:23,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 164 transitions. [2024-06-28 00:08:23,110 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4659090909090909 [2024-06-28 00:08:23,110 INFO L175 Difference]: Start difference. First operand has 413 places, 304 transitions, 2873 flow. Second operand 11 states and 164 transitions. [2024-06-28 00:08:23,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 423 places, 317 transitions, 3559 flow [2024-06-28 00:08:23,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 414 places, 317 transitions, 3321 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-28 00:08:23,632 INFO L231 Difference]: Finished difference. Result has 415 places, 305 transitions, 2847 flow [2024-06-28 00:08:23,632 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2635, PETRI_DIFFERENCE_MINUEND_PLACES=404, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2847, PETRI_PLACES=415, PETRI_TRANSITIONS=305} [2024-06-28 00:08:23,632 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 384 predicate places. [2024-06-28 00:08:23,632 INFO L495 AbstractCegarLoop]: Abstraction has has 415 places, 305 transitions, 2847 flow [2024-06-28 00:08:23,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:23,633 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:23,633 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:08:23,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-28 00:08:23,633 INFO L420 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:08:23,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:23,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1974262200, now seen corresponding path program 25 times [2024-06-28 00:08:23,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:23,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804323367] [2024-06-28 00:08:23,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:23,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:23,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:25,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:08:25,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:25,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804323367] [2024-06-28 00:08:25,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804323367] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:25,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:25,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:08:25,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145306240] [2024-06-28 00:08:25,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:25,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:08:25,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:25,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:08:25,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:08:25,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:08:25,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 305 transitions, 2847 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:25,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:25,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:08:25,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:26,349 INFO L124 PetriNetUnfolderBase]: 722/1441 cut-off events. [2024-06-28 00:08:26,349 INFO L125 PetriNetUnfolderBase]: For 123040/123040 co-relation queries the response was YES. [2024-06-28 00:08:26,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7255 conditions, 1441 events. 722/1441 cut-off events. For 123040/123040 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 9244 event pairs, 128 based on Foata normal form. 2/1437 useless extension candidates. Maximal degree in co-relation 7085. Up to 1098 conditions per place. [2024-06-28 00:08:26,365 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 220 selfloop transitions, 94 changer transitions 0/318 dead transitions. [2024-06-28 00:08:26,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 318 transitions, 3537 flow [2024-06-28 00:08:26,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:08:26,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:08:26,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 161 transitions. [2024-06-28 00:08:26,367 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45738636363636365 [2024-06-28 00:08:26,367 INFO L175 Difference]: Start difference. First operand has 415 places, 305 transitions, 2847 flow. Second operand 11 states and 161 transitions. [2024-06-28 00:08:26,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 318 transitions, 3537 flow [2024-06-28 00:08:26,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 318 transitions, 3335 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-28 00:08:26,964 INFO L231 Difference]: Finished difference. Result has 417 places, 306 transitions, 2875 flow [2024-06-28 00:08:26,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2645, PETRI_DIFFERENCE_MINUEND_PLACES=406, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2875, PETRI_PLACES=417, PETRI_TRANSITIONS=306} [2024-06-28 00:08:26,964 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 386 predicate places. [2024-06-28 00:08:26,964 INFO L495 AbstractCegarLoop]: Abstraction has has 417 places, 306 transitions, 2875 flow [2024-06-28 00:08:26,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:26,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:26,964 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:08:26,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-28 00:08:26,965 INFO L420 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:08:26,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:26,965 INFO L85 PathProgramCache]: Analyzing trace with hash -221368508, now seen corresponding path program 26 times [2024-06-28 00:08:26,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:26,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146770900] [2024-06-28 00:08:26,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:26,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:26,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:28,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:08:28,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:28,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146770900] [2024-06-28 00:08:28,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146770900] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:28,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:28,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:08:28,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842282738] [2024-06-28 00:08:28,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:28,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:08:28,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:28,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:08:28,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:08:28,769 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:08:28,770 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 306 transitions, 2875 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:28,770 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:28,770 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:08:28,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:29,223 INFO L124 PetriNetUnfolderBase]: 726/1449 cut-off events. [2024-06-28 00:08:29,223 INFO L125 PetriNetUnfolderBase]: For 124937/124937 co-relation queries the response was YES. [2024-06-28 00:08:29,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7322 conditions, 1449 events. 726/1449 cut-off events. For 124937/124937 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 9338 event pairs, 128 based on Foata normal form. 2/1445 useless extension candidates. Maximal degree in co-relation 7151. Up to 1064 conditions per place. [2024-06-28 00:08:29,239 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 226 selfloop transitions, 90 changer transitions 0/320 dead transitions. [2024-06-28 00:08:29,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 320 transitions, 3573 flow [2024-06-28 00:08:29,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:08:29,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:08:29,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 164 transitions. [2024-06-28 00:08:29,240 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4659090909090909 [2024-06-28 00:08:29,240 INFO L175 Difference]: Start difference. First operand has 417 places, 306 transitions, 2875 flow. Second operand 11 states and 164 transitions. [2024-06-28 00:08:29,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 320 transitions, 3573 flow [2024-06-28 00:08:29,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 320 transitions, 3353 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-28 00:08:29,763 INFO L231 Difference]: Finished difference. Result has 419 places, 307 transitions, 2879 flow [2024-06-28 00:08:29,764 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2655, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2879, PETRI_PLACES=419, PETRI_TRANSITIONS=307} [2024-06-28 00:08:29,764 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 388 predicate places. [2024-06-28 00:08:29,764 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 307 transitions, 2879 flow [2024-06-28 00:08:29,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:29,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:29,764 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:08:29,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-28 00:08:29,764 INFO L420 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:08:29,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:29,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1523139622, now seen corresponding path program 27 times [2024-06-28 00:08:29,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:29,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792389076] [2024-06-28 00:08:29,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:29,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:29,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:31,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:08:31,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:31,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792389076] [2024-06-28 00:08:31,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792389076] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:31,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:31,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:08:31,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147816839] [2024-06-28 00:08:31,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:31,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:08:31,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:31,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:08:31,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:08:31,875 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:08:31,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 307 transitions, 2879 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:31,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:31,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:08:31,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:32,453 INFO L124 PetriNetUnfolderBase]: 737/1470 cut-off events. [2024-06-28 00:08:32,453 INFO L125 PetriNetUnfolderBase]: For 148344/148344 co-relation queries the response was YES. [2024-06-28 00:08:32,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7799 conditions, 1470 events. 737/1470 cut-off events. For 148344/148344 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 9473 event pairs, 131 based on Foata normal form. 2/1466 useless extension candidates. Maximal degree in co-relation 7627. Up to 1112 conditions per place. [2024-06-28 00:08:32,470 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 227 selfloop transitions, 92 changer transitions 0/323 dead transitions. [2024-06-28 00:08:32,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 323 transitions, 3915 flow [2024-06-28 00:08:32,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:08:32,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:08:32,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 164 transitions. [2024-06-28 00:08:32,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4659090909090909 [2024-06-28 00:08:32,471 INFO L175 Difference]: Start difference. First operand has 419 places, 307 transitions, 2879 flow. Second operand 11 states and 164 transitions. [2024-06-28 00:08:32,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 323 transitions, 3915 flow [2024-06-28 00:08:33,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 323 transitions, 3701 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-28 00:08:33,097 INFO L231 Difference]: Finished difference. Result has 421 places, 309 transitions, 2935 flow [2024-06-28 00:08:33,097 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2665, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2935, PETRI_PLACES=421, PETRI_TRANSITIONS=309} [2024-06-28 00:08:33,098 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 390 predicate places. [2024-06-28 00:08:33,098 INFO L495 AbstractCegarLoop]: Abstraction has has 421 places, 309 transitions, 2935 flow [2024-06-28 00:08:33,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:33,098 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:33,098 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:08:33,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-28 00:08:33,098 INFO L420 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:08:33,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:33,098 INFO L85 PathProgramCache]: Analyzing trace with hash -499725816, now seen corresponding path program 28 times [2024-06-28 00:08:33,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:33,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763690462] [2024-06-28 00:08:33,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:33,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:33,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:34,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:08:34,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:34,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763690462] [2024-06-28 00:08:34,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763690462] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:34,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:34,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:08:34,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420700093] [2024-06-28 00:08:34,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:34,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:08:34,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:34,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:08:34,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:08:34,915 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:08:34,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 309 transitions, 2935 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:34,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:34,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:08:34,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:35,436 INFO L124 PetriNetUnfolderBase]: 748/1491 cut-off events. [2024-06-28 00:08:35,436 INFO L125 PetriNetUnfolderBase]: For 172469/172469 co-relation queries the response was YES. [2024-06-28 00:08:35,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8284 conditions, 1491 events. 748/1491 cut-off events. For 172469/172469 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 9620 event pairs, 136 based on Foata normal form. 2/1487 useless extension candidates. Maximal degree in co-relation 8111. Up to 1139 conditions per place. [2024-06-28 00:08:35,453 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 212 selfloop transitions, 108 changer transitions 0/324 dead transitions. [2024-06-28 00:08:35,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 324 transitions, 3977 flow [2024-06-28 00:08:35,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:08:35,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:08:35,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 159 transitions. [2024-06-28 00:08:35,454 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45170454545454547 [2024-06-28 00:08:35,454 INFO L175 Difference]: Start difference. First operand has 421 places, 309 transitions, 2935 flow. Second operand 11 states and 159 transitions. [2024-06-28 00:08:35,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 324 transitions, 3977 flow [2024-06-28 00:08:36,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 424 places, 324 transitions, 3821 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-28 00:08:36,114 INFO L231 Difference]: Finished difference. Result has 425 places, 311 transitions, 3085 flow [2024-06-28 00:08:36,114 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2779, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3085, PETRI_PLACES=425, PETRI_TRANSITIONS=311} [2024-06-28 00:08:36,115 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 394 predicate places. [2024-06-28 00:08:36,115 INFO L495 AbstractCegarLoop]: Abstraction has has 425 places, 311 transitions, 3085 flow [2024-06-28 00:08:36,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:36,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:36,115 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:08:36,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-28 00:08:36,116 INFO L420 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:08:36,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:36,116 INFO L85 PathProgramCache]: Analyzing trace with hash 471726472, now seen corresponding path program 29 times [2024-06-28 00:08:36,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:36,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87017672] [2024-06-28 00:08:36,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:36,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:36,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:37,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:08:37,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:37,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87017672] [2024-06-28 00:08:37,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87017672] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:37,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:37,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:08:37,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761497214] [2024-06-28 00:08:37,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:37,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:08:37,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:37,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:08:37,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:08:38,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:08:38,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 425 places, 311 transitions, 3085 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:38,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:38,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:08:38,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:38,817 INFO L124 PetriNetUnfolderBase]: 752/1499 cut-off events. [2024-06-28 00:08:38,817 INFO L125 PetriNetUnfolderBase]: For 174550/174550 co-relation queries the response was YES. [2024-06-28 00:08:38,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8481 conditions, 1499 events. 752/1499 cut-off events. For 174550/174550 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 9674 event pairs, 140 based on Foata normal form. 2/1495 useless extension candidates. Maximal degree in co-relation 8306. Up to 1176 conditions per place. [2024-06-28 00:08:38,836 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 228 selfloop transitions, 91 changer transitions 0/323 dead transitions. [2024-06-28 00:08:38,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 323 transitions, 3783 flow [2024-06-28 00:08:38,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:08:38,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:08:38,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 159 transitions. [2024-06-28 00:08:38,837 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45170454545454547 [2024-06-28 00:08:38,837 INFO L175 Difference]: Start difference. First operand has 425 places, 311 transitions, 3085 flow. Second operand 11 states and 159 transitions. [2024-06-28 00:08:38,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 435 places, 323 transitions, 3783 flow [2024-06-28 00:08:39,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 428 places, 323 transitions, 3595 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-06-28 00:08:39,534 INFO L231 Difference]: Finished difference. Result has 429 places, 312 transitions, 3121 flow [2024-06-28 00:08:39,534 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2897, PETRI_DIFFERENCE_MINUEND_PLACES=418, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3121, PETRI_PLACES=429, PETRI_TRANSITIONS=312} [2024-06-28 00:08:39,534 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 398 predicate places. [2024-06-28 00:08:39,534 INFO L495 AbstractCegarLoop]: Abstraction has has 429 places, 312 transitions, 3121 flow [2024-06-28 00:08:39,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:39,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:39,535 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:08:39,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-28 00:08:39,535 INFO L420 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:08:39,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:39,535 INFO L85 PathProgramCache]: Analyzing trace with hash 1528646152, now seen corresponding path program 30 times [2024-06-28 00:08:39,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:39,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587543855] [2024-06-28 00:08:39,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:39,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:39,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:41,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:08:41,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:41,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587543855] [2024-06-28 00:08:41,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587543855] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:41,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:41,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:08:41,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006763451] [2024-06-28 00:08:41,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:41,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:08:41,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:41,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:08:41,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:08:41,748 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:08:41,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 429 places, 312 transitions, 3121 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:41,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:41,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:08:41,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:42,456 INFO L124 PetriNetUnfolderBase]: 749/1494 cut-off events. [2024-06-28 00:08:42,456 INFO L125 PetriNetUnfolderBase]: For 154513/154513 co-relation queries the response was YES. [2024-06-28 00:08:42,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8174 conditions, 1494 events. 749/1494 cut-off events. For 154513/154513 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 9662 event pairs, 135 based on Foata normal form. 2/1490 useless extension candidates. Maximal degree in co-relation 7997. Up to 1157 conditions per place. [2024-06-28 00:08:42,470 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 229 selfloop transitions, 91 changer transitions 0/324 dead transitions. [2024-06-28 00:08:42,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 438 places, 324 transitions, 3787 flow [2024-06-28 00:08:42,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:08:42,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:08:42,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 152 transitions. [2024-06-28 00:08:42,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.475 [2024-06-28 00:08:42,471 INFO L175 Difference]: Start difference. First operand has 429 places, 312 transitions, 3121 flow. Second operand 10 states and 152 transitions. [2024-06-28 00:08:42,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 438 places, 324 transitions, 3787 flow [2024-06-28 00:08:43,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 429 places, 324 transitions, 3543 flow, removed 32 selfloop flow, removed 9 redundant places. [2024-06-28 00:08:43,076 INFO L231 Difference]: Finished difference. Result has 430 places, 312 transitions, 3063 flow [2024-06-28 00:08:43,076 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2877, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3063, PETRI_PLACES=430, PETRI_TRANSITIONS=312} [2024-06-28 00:08:43,076 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 399 predicate places. [2024-06-28 00:08:43,076 INFO L495 AbstractCegarLoop]: Abstraction has has 430 places, 312 transitions, 3063 flow [2024-06-28 00:08:43,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:43,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:43,077 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:08:43,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-06-28 00:08:43,077 INFO L420 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:08:43,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:43,078 INFO L85 PathProgramCache]: Analyzing trace with hash -714864330, now seen corresponding path program 31 times [2024-06-28 00:08:43,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:43,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064577711] [2024-06-28 00:08:43,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:43,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:43,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:45,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:08:45,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:45,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064577711] [2024-06-28 00:08:45,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064577711] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:45,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:45,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:08:45,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796940679] [2024-06-28 00:08:45,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:45,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:08:45,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:45,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:08:45,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:08:45,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 00:08:45,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 312 transitions, 3063 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 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) [2024-06-28 00:08:45,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:45,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 00:08:45,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:45,738 INFO L124 PetriNetUnfolderBase]: 746/1492 cut-off events. [2024-06-28 00:08:45,738 INFO L125 PetriNetUnfolderBase]: For 133530/133530 co-relation queries the response was YES. [2024-06-28 00:08:45,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7733 conditions, 1492 events. 746/1492 cut-off events. For 133530/133530 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 9658 event pairs, 253 based on Foata normal form. 2/1493 useless extension candidates. Maximal degree in co-relation 7556. Up to 1388 conditions per place. [2024-06-28 00:08:45,756 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 300 selfloop transitions, 19 changer transitions 0/323 dead transitions. [2024-06-28 00:08:45,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 323 transitions, 3725 flow [2024-06-28 00:08:45,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:08:45,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:08:45,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-28 00:08:45,757 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-28 00:08:45,757 INFO L175 Difference]: Start difference. First operand has 430 places, 312 transitions, 3063 flow. Second operand 11 states and 136 transitions. [2024-06-28 00:08:45,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 440 places, 323 transitions, 3725 flow [2024-06-28 00:08:46,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 431 places, 323 transitions, 3509 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-28 00:08:46,446 INFO L231 Difference]: Finished difference. Result has 432 places, 312 transitions, 2889 flow [2024-06-28 00:08:46,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2847, PETRI_DIFFERENCE_MINUEND_PLACES=421, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2889, PETRI_PLACES=432, PETRI_TRANSITIONS=312} [2024-06-28 00:08:46,447 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 401 predicate places. [2024-06-28 00:08:46,447 INFO L495 AbstractCegarLoop]: Abstraction has has 432 places, 312 transitions, 2889 flow [2024-06-28 00:08:46,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 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) [2024-06-28 00:08:46,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:46,447 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:08:46,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-06-28 00:08:46,447 INFO L420 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:08:46,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:46,447 INFO L85 PathProgramCache]: Analyzing trace with hash 323909482, now seen corresponding path program 32 times [2024-06-28 00:08:46,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:46,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471048095] [2024-06-28 00:08:46,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:46,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:46,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:48,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:08:48,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:48,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471048095] [2024-06-28 00:08:48,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471048095] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:48,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:48,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:08:48,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42970965] [2024-06-28 00:08:48,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:48,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:08:48,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:48,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:08:48,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:08:48,677 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:08:48,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 312 transitions, 2889 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:48,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:48,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:08:48,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:49,212 INFO L124 PetriNetUnfolderBase]: 750/1497 cut-off events. [2024-06-28 00:08:49,212 INFO L125 PetriNetUnfolderBase]: For 135042/135042 co-relation queries the response was YES. [2024-06-28 00:08:49,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7631 conditions, 1497 events. 750/1497 cut-off events. For 135042/135042 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 9715 event pairs, 132 based on Foata normal form. 2/1493 useless extension candidates. Maximal degree in co-relation 7452. Up to 945 conditions per place. [2024-06-28 00:08:49,231 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 216 selfloop transitions, 108 changer transitions 0/328 dead transitions. [2024-06-28 00:08:49,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 328 transitions, 3911 flow [2024-06-28 00:08:49,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:08:49,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:08:49,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 163 transitions. [2024-06-28 00:08:49,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4630681818181818 [2024-06-28 00:08:49,232 INFO L175 Difference]: Start difference. First operand has 432 places, 312 transitions, 2889 flow. Second operand 11 states and 163 transitions. [2024-06-28 00:08:49,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 442 places, 328 transitions, 3911 flow [2024-06-28 00:08:49,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 328 transitions, 3863 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-28 00:08:49,834 INFO L231 Difference]: Finished difference. Result has 433 places, 313 transitions, 3105 flow [2024-06-28 00:08:49,834 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2841, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3105, PETRI_PLACES=433, PETRI_TRANSITIONS=313} [2024-06-28 00:08:49,835 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 402 predicate places. [2024-06-28 00:08:49,835 INFO L495 AbstractCegarLoop]: Abstraction has has 433 places, 313 transitions, 3105 flow [2024-06-28 00:08:49,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:49,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:49,835 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:08:49,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-06-28 00:08:49,835 INFO L420 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:08:49,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:49,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1446998100, now seen corresponding path program 33 times [2024-06-28 00:08:49,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:49,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625337141] [2024-06-28 00:08:49,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:49,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:49,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:51,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:08:51,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:51,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625337141] [2024-06-28 00:08:51,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625337141] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:51,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:51,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:08:51,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077806403] [2024-06-28 00:08:51,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:51,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:08:51,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:51,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:08:51,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:08:51,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:08:51,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 313 transitions, 3105 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:51,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:51,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:08:51,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:52,198 INFO L124 PetriNetUnfolderBase]: 754/1505 cut-off events. [2024-06-28 00:08:52,198 INFO L125 PetriNetUnfolderBase]: For 138264/138264 co-relation queries the response was YES. [2024-06-28 00:08:52,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7959 conditions, 1505 events. 754/1505 cut-off events. For 138264/138264 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 9758 event pairs, 140 based on Foata normal form. 2/1501 useless extension candidates. Maximal degree in co-relation 7779. Up to 1182 conditions per place. [2024-06-28 00:08:52,217 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 226 selfloop transitions, 95 changer transitions 0/325 dead transitions. [2024-06-28 00:08:52,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 443 places, 325 transitions, 3817 flow [2024-06-28 00:08:52,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:08:52,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:08:52,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 158 transitions. [2024-06-28 00:08:52,218 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44886363636363635 [2024-06-28 00:08:52,218 INFO L175 Difference]: Start difference. First operand has 433 places, 313 transitions, 3105 flow. Second operand 11 states and 158 transitions. [2024-06-28 00:08:52,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 443 places, 325 transitions, 3817 flow [2024-06-28 00:08:52,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 433 places, 325 transitions, 3548 flow, removed 27 selfloop flow, removed 10 redundant places. [2024-06-28 00:08:52,859 INFO L231 Difference]: Finished difference. Result has 434 places, 314 transitions, 3078 flow [2024-06-28 00:08:52,859 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2843, PETRI_DIFFERENCE_MINUEND_PLACES=423, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3078, PETRI_PLACES=434, PETRI_TRANSITIONS=314} [2024-06-28 00:08:52,859 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 403 predicate places. [2024-06-28 00:08:52,859 INFO L495 AbstractCegarLoop]: Abstraction has has 434 places, 314 transitions, 3078 flow [2024-06-28 00:08:52,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:52,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:52,860 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:08:52,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2024-06-28 00:08:52,860 INFO L420 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:08:52,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:52,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1446790710, now seen corresponding path program 34 times [2024-06-28 00:08:52,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:52,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230440622] [2024-06-28 00:08:52,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:52,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:52,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:54,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:08:54,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:54,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230440622] [2024-06-28 00:08:54,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230440622] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:54,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:54,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:08:54,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540433681] [2024-06-28 00:08:54,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:54,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:08:54,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:54,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:08:54,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:08:55,163 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:08:55,163 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 434 places, 314 transitions, 3078 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:55,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:55,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:08:55,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:55,705 INFO L124 PetriNetUnfolderBase]: 758/1513 cut-off events. [2024-06-28 00:08:55,705 INFO L125 PetriNetUnfolderBase]: For 139435/139435 co-relation queries the response was YES. [2024-06-28 00:08:55,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7822 conditions, 1513 events. 758/1513 cut-off events. For 139435/139435 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 9801 event pairs, 140 based on Foata normal form. 2/1509 useless extension candidates. Maximal degree in co-relation 7643. Up to 1176 conditions per place. [2024-06-28 00:08:55,724 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 227 selfloop transitions, 96 changer transitions 0/327 dead transitions. [2024-06-28 00:08:55,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 327 transitions, 3791 flow [2024-06-28 00:08:55,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:08:55,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:08:55,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 160 transitions. [2024-06-28 00:08:55,726 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-28 00:08:55,726 INFO L175 Difference]: Start difference. First operand has 434 places, 314 transitions, 3078 flow. Second operand 11 states and 160 transitions. [2024-06-28 00:08:55,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 327 transitions, 3791 flow [2024-06-28 00:08:56,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 434 places, 327 transitions, 3499 flow, removed 19 selfloop flow, removed 10 redundant places. [2024-06-28 00:08:56,375 INFO L231 Difference]: Finished difference. Result has 435 places, 315 transitions, 3025 flow [2024-06-28 00:08:56,376 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2786, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3025, PETRI_PLACES=435, PETRI_TRANSITIONS=315} [2024-06-28 00:08:56,376 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 404 predicate places. [2024-06-28 00:08:56,376 INFO L495 AbstractCegarLoop]: Abstraction has has 435 places, 315 transitions, 3025 flow [2024-06-28 00:08:56,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:56,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:56,376 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:08:56,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2024-06-28 00:08:56,376 INFO L420 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:08:56,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:56,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1240116382, now seen corresponding path program 35 times [2024-06-28 00:08:56,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:56,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385832899] [2024-06-28 00:08:56,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:56,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:56,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:58,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:08:58,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:58,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385832899] [2024-06-28 00:08:58,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385832899] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:58,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:58,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:08:58,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016279564] [2024-06-28 00:08:58,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:58,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:08:58,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:58,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:08:58,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:08:58,258 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:08:58,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 435 places, 315 transitions, 3025 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:58,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:58,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:08:58,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:58,737 INFO L124 PetriNetUnfolderBase]: 755/1508 cut-off events. [2024-06-28 00:08:58,737 INFO L125 PetriNetUnfolderBase]: For 117620/117620 co-relation queries the response was YES. [2024-06-28 00:08:58,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7285 conditions, 1508 events. 755/1508 cut-off events. For 117620/117620 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 9789 event pairs, 137 based on Foata normal form. 2/1504 useless extension candidates. Maximal degree in co-relation 7106. Up to 1091 conditions per place. [2024-06-28 00:08:58,755 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 220 selfloop transitions, 104 changer transitions 0/328 dead transitions. [2024-06-28 00:08:58,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 445 places, 328 transitions, 3701 flow [2024-06-28 00:08:58,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:08:58,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:08:58,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 160 transitions. [2024-06-28 00:08:58,756 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-28 00:08:58,756 INFO L175 Difference]: Start difference. First operand has 435 places, 315 transitions, 3025 flow. Second operand 11 states and 160 transitions. [2024-06-28 00:08:58,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 445 places, 328 transitions, 3701 flow [2024-06-28 00:08:59,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 328 transitions, 3463 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-28 00:08:59,287 INFO L231 Difference]: Finished difference. Result has 437 places, 315 transitions, 2999 flow [2024-06-28 00:08:59,287 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2787, PETRI_DIFFERENCE_MINUEND_PLACES=426, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2999, PETRI_PLACES=437, PETRI_TRANSITIONS=315} [2024-06-28 00:08:59,288 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 406 predicate places. [2024-06-28 00:08:59,288 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 315 transitions, 2999 flow [2024-06-28 00:08:59,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:59,288 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:59,288 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:08:59,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2024-06-28 00:08:59,288 INFO L420 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:08:59,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:59,289 INFO L85 PathProgramCache]: Analyzing trace with hash -233813210, now seen corresponding path program 8 times [2024-06-28 00:08:59,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:59,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927550733] [2024-06-28 00:08:59,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:59,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:59,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:01,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:09:01,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:01,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927550733] [2024-06-28 00:09:01,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927550733] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:01,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:01,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:09:01,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54711812] [2024-06-28 00:09:01,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:01,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:09:01,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:01,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:09:01,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:09:01,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:09:01,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 315 transitions, 2999 flow. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:01,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:01,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:09:01,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:02,108 INFO L124 PetriNetUnfolderBase]: 767/1536 cut-off events. [2024-06-28 00:09:02,108 INFO L125 PetriNetUnfolderBase]: For 187859/187859 co-relation queries the response was YES. [2024-06-28 00:09:02,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7404 conditions, 1536 events. 767/1536 cut-off events. For 187859/187859 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 9976 event pairs, 145 based on Foata normal form. 8/1538 useless extension candidates. Maximal degree in co-relation 7224. Up to 1175 conditions per place. [2024-06-28 00:09:02,126 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 210 selfloop transitions, 107 changer transitions 9/330 dead transitions. [2024-06-28 00:09:02,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 448 places, 330 transitions, 3737 flow [2024-06-28 00:09:02,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:09:02,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:09:02,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 173 transitions. [2024-06-28 00:09:02,127 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4505208333333333 [2024-06-28 00:09:02,127 INFO L175 Difference]: Start difference. First operand has 437 places, 315 transitions, 2999 flow. Second operand 12 states and 173 transitions. [2024-06-28 00:09:02,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 448 places, 330 transitions, 3737 flow [2024-06-28 00:09:02,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 330 transitions, 3223 flow, removed 15 selfloop flow, removed 13 redundant places. [2024-06-28 00:09:02,768 INFO L231 Difference]: Finished difference. Result has 436 places, 312 transitions, 2685 flow [2024-06-28 00:09:02,768 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2485, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2685, PETRI_PLACES=436, PETRI_TRANSITIONS=312} [2024-06-28 00:09:02,768 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 405 predicate places. [2024-06-28 00:09:02,768 INFO L495 AbstractCegarLoop]: Abstraction has has 436 places, 312 transitions, 2685 flow [2024-06-28 00:09:02,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:02,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:02,769 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:09:02,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2024-06-28 00:09:02,769 INFO L420 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:09:02,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:02,769 INFO L85 PathProgramCache]: Analyzing trace with hash -1474948314, now seen corresponding path program 9 times [2024-06-28 00:09:02,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:02,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721640634] [2024-06-28 00:09:02,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:02,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:02,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:04,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:09:04,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:04,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721640634] [2024-06-28 00:09:04,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721640634] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:04,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:04,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:09:04,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651273355] [2024-06-28 00:09:04,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:04,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:09:04,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:04,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:09:04,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:09:05,121 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:09:05,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 436 places, 312 transitions, 2685 flow. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:05,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:05,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:09:05,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:05,643 INFO L124 PetriNetUnfolderBase]: 762/1531 cut-off events. [2024-06-28 00:09:05,644 INFO L125 PetriNetUnfolderBase]: For 189491/189491 co-relation queries the response was YES. [2024-06-28 00:09:05,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6811 conditions, 1531 events. 762/1531 cut-off events. For 189491/189491 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 9885 event pairs, 147 based on Foata normal form. 8/1533 useless extension candidates. Maximal degree in co-relation 6632. Up to 1162 conditions per place. [2024-06-28 00:09:05,661 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 219 selfloop transitions, 95 changer transitions 9/327 dead transitions. [2024-06-28 00:09:05,661 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 327 transitions, 3417 flow [2024-06-28 00:09:05,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:09:05,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:09:05,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 175 transitions. [2024-06-28 00:09:05,662 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4557291666666667 [2024-06-28 00:09:05,662 INFO L175 Difference]: Start difference. First operand has 436 places, 312 transitions, 2685 flow. Second operand 12 states and 175 transitions. [2024-06-28 00:09:05,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 327 transitions, 3417 flow [2024-06-28 00:09:06,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 433 places, 327 transitions, 3199 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-28 00:09:06,220 INFO L231 Difference]: Finished difference. Result has 434 places, 309 transitions, 2643 flow [2024-06-28 00:09:06,220 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2467, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2643, PETRI_PLACES=434, PETRI_TRANSITIONS=309} [2024-06-28 00:09:06,220 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 403 predicate places. [2024-06-28 00:09:06,220 INFO L495 AbstractCegarLoop]: Abstraction has has 434 places, 309 transitions, 2643 flow [2024-06-28 00:09:06,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:06,220 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:06,221 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:09:06,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2024-06-28 00:09:06,221 INFO L420 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:09:06,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:06,221 INFO L85 PathProgramCache]: Analyzing trace with hash 188030804, now seen corresponding path program 10 times [2024-06-28 00:09:06,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:06,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463293481] [2024-06-28 00:09:06,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:06,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:06,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:07,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:09:07,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:07,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463293481] [2024-06-28 00:09:07,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463293481] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:07,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:07,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:09:07,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052217225] [2024-06-28 00:09:07,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:07,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:09:07,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:07,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:09:07,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:09:08,201 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:09:08,201 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 434 places, 309 transitions, 2643 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-06-28 00:09:08,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:08,201 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:09:08,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:08,744 INFO L124 PetriNetUnfolderBase]: 775/1564 cut-off events. [2024-06-28 00:09:08,744 INFO L125 PetriNetUnfolderBase]: For 253142/253142 co-relation queries the response was YES. [2024-06-28 00:09:08,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8168 conditions, 1564 events. 775/1564 cut-off events. For 253142/253142 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 10137 event pairs, 155 based on Foata normal form. 6/1564 useless extension candidates. Maximal degree in co-relation 7990. Up to 1136 conditions per place. [2024-06-28 00:09:08,763 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 219 selfloop transitions, 99 changer transitions 6/328 dead transitions. [2024-06-28 00:09:08,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 328 transitions, 3721 flow [2024-06-28 00:09:08,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:09:08,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:09:08,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 177 transitions. [2024-06-28 00:09:08,764 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4609375 [2024-06-28 00:09:08,764 INFO L175 Difference]: Start difference. First operand has 434 places, 309 transitions, 2643 flow. Second operand 12 states and 177 transitions. [2024-06-28 00:09:08,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 442 places, 328 transitions, 3721 flow [2024-06-28 00:09:09,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 431 places, 328 transitions, 3523 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-28 00:09:09,518 INFO L231 Difference]: Finished difference. Result has 432 places, 307 transitions, 2638 flow [2024-06-28 00:09:09,519 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2449, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2638, PETRI_PLACES=432, PETRI_TRANSITIONS=307} [2024-06-28 00:09:09,519 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 401 predicate places. [2024-06-28 00:09:09,519 INFO L495 AbstractCegarLoop]: Abstraction has has 432 places, 307 transitions, 2638 flow [2024-06-28 00:09:09,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-06-28 00:09:09,519 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:09,519 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:09:09,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2024-06-28 00:09:09,519 INFO L420 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:09:09,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:09,519 INFO L85 PathProgramCache]: Analyzing trace with hash -1474621884, now seen corresponding path program 11 times [2024-06-28 00:09:09,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:09,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930905850] [2024-06-28 00:09:09,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:09,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:09,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:11,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:09:11,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:11,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930905850] [2024-06-28 00:09:11,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930905850] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:11,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:11,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:09:11,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661257076] [2024-06-28 00:09:11,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:11,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:09:11,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:11,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:09:11,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:09:11,425 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:09:11,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 307 transitions, 2638 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-06-28 00:09:11,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:11,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:09:11,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:12,056 INFO L124 PetriNetUnfolderBase]: 791/1600 cut-off events. [2024-06-28 00:09:12,056 INFO L125 PetriNetUnfolderBase]: For 340064/340064 co-relation queries the response was YES. [2024-06-28 00:09:12,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9599 conditions, 1600 events. 791/1600 cut-off events. For 340064/340064 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 10389 event pairs, 167 based on Foata normal form. 6/1600 useless extension candidates. Maximal degree in co-relation 9422. Up to 1172 conditions per place. [2024-06-28 00:09:12,078 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 222 selfloop transitions, 93 changer transitions 7/326 dead transitions. [2024-06-28 00:09:12,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 326 transitions, 3710 flow [2024-06-28 00:09:12,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:09:12,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:09:12,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 177 transitions. [2024-06-28 00:09:12,078 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4609375 [2024-06-28 00:09:12,079 INFO L175 Difference]: Start difference. First operand has 432 places, 307 transitions, 2638 flow. Second operand 12 states and 177 transitions. [2024-06-28 00:09:12,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 441 places, 326 transitions, 3710 flow [2024-06-28 00:09:13,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 430 places, 326 transitions, 3512 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-28 00:09:13,263 INFO L231 Difference]: Finished difference. Result has 431 places, 304 transitions, 2614 flow [2024-06-28 00:09:13,263 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2444, PETRI_DIFFERENCE_MINUEND_PLACES=419, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2614, PETRI_PLACES=431, PETRI_TRANSITIONS=304} [2024-06-28 00:09:13,264 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 400 predicate places. [2024-06-28 00:09:13,264 INFO L495 AbstractCegarLoop]: Abstraction has has 431 places, 304 transitions, 2614 flow [2024-06-28 00:09:13,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-06-28 00:09:13,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:13,264 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:09:13,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2024-06-28 00:09:13,264 INFO L420 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:09:13,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:13,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1484145084, now seen corresponding path program 12 times [2024-06-28 00:09:13,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:13,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28276578] [2024-06-28 00:09:13,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:13,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:13,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:14,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:09:14,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:14,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28276578] [2024-06-28 00:09:14,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28276578] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:14,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:14,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:09:14,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279611771] [2024-06-28 00:09:14,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:14,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:09:14,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:14,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:09:14,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:09:15,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:09:15,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 431 places, 304 transitions, 2614 flow. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:15,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:15,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:09:15,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:15,641 INFO L124 PetriNetUnfolderBase]: 788/1587 cut-off events. [2024-06-28 00:09:15,641 INFO L125 PetriNetUnfolderBase]: For 361357/361357 co-relation queries the response was YES. [2024-06-28 00:09:15,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9590 conditions, 1587 events. 788/1587 cut-off events. For 361357/361357 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 10310 event pairs, 169 based on Foata normal form. 8/1589 useless extension candidates. Maximal degree in co-relation 9414. Up to 1239 conditions per place. [2024-06-28 00:09:15,659 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 221 selfloop transitions, 85 changer transitions 9/319 dead transitions. [2024-06-28 00:09:15,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 319 transitions, 3330 flow [2024-06-28 00:09:15,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:09:15,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:09:15,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 174 transitions. [2024-06-28 00:09:15,660 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.453125 [2024-06-28 00:09:15,661 INFO L175 Difference]: Start difference. First operand has 431 places, 304 transitions, 2614 flow. Second operand 12 states and 174 transitions. [2024-06-28 00:09:15,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 439 places, 319 transitions, 3330 flow [2024-06-28 00:09:16,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 319 transitions, 3142 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-28 00:09:16,845 INFO L231 Difference]: Finished difference. Result has 428 places, 301 transitions, 2581 flow [2024-06-28 00:09:16,845 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2428, PETRI_DIFFERENCE_MINUEND_PLACES=416, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2581, PETRI_PLACES=428, PETRI_TRANSITIONS=301} [2024-06-28 00:09:16,845 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 397 predicate places. [2024-06-28 00:09:16,846 INFO L495 AbstractCegarLoop]: Abstraction has has 428 places, 301 transitions, 2581 flow [2024-06-28 00:09:16,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:16,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:16,846 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:09:16,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2024-06-28 00:09:16,846 INFO L420 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:09:16,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:16,847 INFO L85 PathProgramCache]: Analyzing trace with hash -243009980, now seen corresponding path program 13 times [2024-06-28 00:09:16,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:16,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897434697] [2024-06-28 00:09:16,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:16,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:16,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:18,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:09:18,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:18,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897434697] [2024-06-28 00:09:18,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897434697] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:18,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:18,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:09:18,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444296248] [2024-06-28 00:09:18,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:18,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:09:18,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:18,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:09:18,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:09:18,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:09:18,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 301 transitions, 2581 flow. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:18,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:18,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:09:18,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:19,198 INFO L124 PetriNetUnfolderBase]: 783/1584 cut-off events. [2024-06-28 00:09:19,198 INFO L125 PetriNetUnfolderBase]: For 352700/352700 co-relation queries the response was YES. [2024-06-28 00:09:19,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9488 conditions, 1584 events. 783/1584 cut-off events. For 352700/352700 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 10335 event pairs, 171 based on Foata normal form. 8/1586 useless extension candidates. Maximal degree in co-relation 9314. Up to 1232 conditions per place. [2024-06-28 00:09:19,218 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 203 selfloop transitions, 100 changer transitions 9/316 dead transitions. [2024-06-28 00:09:19,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 436 places, 316 transitions, 3289 flow [2024-06-28 00:09:19,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:09:19,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:09:19,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 172 transitions. [2024-06-28 00:09:19,219 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4479166666666667 [2024-06-28 00:09:19,219 INFO L175 Difference]: Start difference. First operand has 428 places, 301 transitions, 2581 flow. Second operand 12 states and 172 transitions. [2024-06-28 00:09:19,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 436 places, 316 transitions, 3289 flow [2024-06-28 00:09:20,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 316 transitions, 3115 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-28 00:09:20,329 INFO L231 Difference]: Finished difference. Result has 426 places, 298 transitions, 2592 flow [2024-06-28 00:09:20,329 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2407, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2592, PETRI_PLACES=426, PETRI_TRANSITIONS=298} [2024-06-28 00:09:20,330 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 395 predicate places. [2024-06-28 00:09:20,330 INFO L495 AbstractCegarLoop]: Abstraction has has 426 places, 298 transitions, 2592 flow [2024-06-28 00:09:20,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:20,330 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:20,330 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:09:20,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2024-06-28 00:09:20,331 INFO L420 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:09:20,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:20,331 INFO L85 PathProgramCache]: Analyzing trace with hash -233486780, now seen corresponding path program 14 times [2024-06-28 00:09:20,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:20,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054398546] [2024-06-28 00:09:20,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:20,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:20,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:22,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:09:22,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:22,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054398546] [2024-06-28 00:09:22,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054398546] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:22,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:22,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:09:22,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886827608] [2024-06-28 00:09:22,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:22,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:09:22,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:22,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:09:22,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:09:22,228 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:09:22,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 426 places, 298 transitions, 2592 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-06-28 00:09:22,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:22,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:09:22,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:22,801 INFO L124 PetriNetUnfolderBase]: 796/1617 cut-off events. [2024-06-28 00:09:22,801 INFO L125 PetriNetUnfolderBase]: For 409300/409300 co-relation queries the response was YES. [2024-06-28 00:09:22,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10837 conditions, 1617 events. 796/1617 cut-off events. For 409300/409300 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 10568 event pairs, 179 based on Foata normal form. 6/1617 useless extension candidates. Maximal degree in co-relation 10664. Up to 1212 conditions per place. [2024-06-28 00:09:22,821 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 206 selfloop transitions, 100 changer transitions 7/317 dead transitions. [2024-06-28 00:09:22,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 434 places, 317 transitions, 3636 flow [2024-06-28 00:09:22,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:09:22,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:09:22,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 175 transitions. [2024-06-28 00:09:22,822 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4557291666666667 [2024-06-28 00:09:22,822 INFO L175 Difference]: Start difference. First operand has 426 places, 298 transitions, 2592 flow. Second operand 12 states and 175 transitions. [2024-06-28 00:09:22,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 434 places, 317 transitions, 3636 flow [2024-06-28 00:09:24,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 317 transitions, 3428 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-28 00:09:24,136 INFO L231 Difference]: Finished difference. Result has 424 places, 295 transitions, 2572 flow [2024-06-28 00:09:24,136 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2388, PETRI_DIFFERENCE_MINUEND_PLACES=412, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2572, PETRI_PLACES=424, PETRI_TRANSITIONS=295} [2024-06-28 00:09:24,136 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 393 predicate places. [2024-06-28 00:09:24,136 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 295 transitions, 2572 flow [2024-06-28 00:09:24,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-06-28 00:09:24,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:24,137 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:09:24,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2024-06-28 00:09:24,137 INFO L420 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:09:24,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:24,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1272773722, now seen corresponding path program 15 times [2024-06-28 00:09:24,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:24,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069413712] [2024-06-28 00:09:24,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:24,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:24,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:26,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:09:26,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:26,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069413712] [2024-06-28 00:09:26,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069413712] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:26,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:26,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:09:26,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133044921] [2024-06-28 00:09:26,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:26,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:09:26,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:26,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:09:26,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:09:26,201 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:09:26,201 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 295 transitions, 2572 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-06-28 00:09:26,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:26,201 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:09:26,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:26,933 INFO L124 PetriNetUnfolderBase]: 793/1606 cut-off events. [2024-06-28 00:09:26,933 INFO L125 PetriNetUnfolderBase]: For 428885/428885 co-relation queries the response was YES. [2024-06-28 00:09:26,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10814 conditions, 1606 events. 793/1606 cut-off events. For 428885/428885 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 10477 event pairs, 181 based on Foata normal form. 8/1608 useless extension candidates. Maximal degree in co-relation 10642. Up to 1258 conditions per place. [2024-06-28 00:09:26,953 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 218 selfloop transitions, 79 changer transitions 9/310 dead transitions. [2024-06-28 00:09:26,953 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 432 places, 310 transitions, 3268 flow [2024-06-28 00:09:26,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:09:26,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:09:26,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 176 transitions. [2024-06-28 00:09:26,954 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-28 00:09:26,954 INFO L175 Difference]: Start difference. First operand has 424 places, 295 transitions, 2572 flow. Second operand 12 states and 176 transitions. [2024-06-28 00:09:26,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 432 places, 310 transitions, 3268 flow [2024-06-28 00:09:28,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 310 transitions, 3060 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-28 00:09:28,115 INFO L231 Difference]: Finished difference. Result has 421 places, 292 transitions, 2507 flow [2024-06-28 00:09:28,115 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2366, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2507, PETRI_PLACES=421, PETRI_TRANSITIONS=292} [2024-06-28 00:09:28,116 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 390 predicate places. [2024-06-28 00:09:28,116 INFO L495 AbstractCegarLoop]: Abstraction has has 421 places, 292 transitions, 2507 flow [2024-06-28 00:09:28,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-06-28 00:09:28,116 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:28,116 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:09:28,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2024-06-28 00:09:28,117 INFO L420 AbstractCegarLoop]: === Iteration 184 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:09:28,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:28,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1740645594, now seen corresponding path program 16 times [2024-06-28 00:09:28,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:28,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93116839] [2024-06-28 00:09:28,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:28,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:28,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:30,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:09:30,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:30,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93116839] [2024-06-28 00:09:30,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93116839] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:30,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:30,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:09:30,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347312468] [2024-06-28 00:09:30,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:30,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:09:30,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:30,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:09:30,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:09:30,518 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:09:30,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 292 transitions, 2507 flow. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:30,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:30,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:09:30,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:31,046 INFO L124 PetriNetUnfolderBase]: 788/1601 cut-off events. [2024-06-28 00:09:31,046 INFO L125 PetriNetUnfolderBase]: For 415915/415915 co-relation queries the response was YES. [2024-06-28 00:09:31,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10650 conditions, 1601 events. 788/1601 cut-off events. For 415915/415915 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 10470 event pairs, 183 based on Foata normal form. 8/1603 useless extension candidates. Maximal degree in co-relation 10480. Up to 1251 conditions per place. [2024-06-28 00:09:31,065 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 215 selfloop transitions, 79 changer transitions 9/307 dead transitions. [2024-06-28 00:09:31,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 307 transitions, 3195 flow [2024-06-28 00:09:31,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:09:31,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:09:31,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 174 transitions. [2024-06-28 00:09:31,066 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.453125 [2024-06-28 00:09:31,066 INFO L175 Difference]: Start difference. First operand has 421 places, 292 transitions, 2507 flow. Second operand 12 states and 174 transitions. [2024-06-28 00:09:31,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 307 transitions, 3195 flow [2024-06-28 00:09:32,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 307 transitions, 3033 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-28 00:09:32,456 INFO L231 Difference]: Finished difference. Result has 419 places, 289 transitions, 2486 flow [2024-06-28 00:09:32,456 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2345, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2486, PETRI_PLACES=419, PETRI_TRANSITIONS=289} [2024-06-28 00:09:32,457 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 388 predicate places. [2024-06-28 00:09:32,457 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 289 transitions, 2486 flow [2024-06-28 00:09:32,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:32,457 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:32,457 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:09:32,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2024-06-28 00:09:32,457 INFO L420 AbstractCegarLoop]: === Iteration 185 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:09:32,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:32,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1528861478, now seen corresponding path program 17 times [2024-06-28 00:09:32,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:32,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364095417] [2024-06-28 00:09:32,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:32,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:32,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:34,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:09:34,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:34,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364095417] [2024-06-28 00:09:34,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364095417] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:34,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:34,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:09:34,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508295077] [2024-06-28 00:09:34,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:34,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:09:34,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:34,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:09:34,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:09:34,896 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:09:34,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 289 transitions, 2486 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-06-28 00:09:34,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:34,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:09:34,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:35,681 INFO L124 PetriNetUnfolderBase]: 761/1546 cut-off events. [2024-06-28 00:09:35,681 INFO L125 PetriNetUnfolderBase]: For 327950/327950 co-relation queries the response was YES. [2024-06-28 00:09:35,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9187 conditions, 1546 events. 761/1546 cut-off events. For 327950/327950 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 10043 event pairs, 169 based on Foata normal form. 8/1548 useless extension candidates. Maximal degree in co-relation 9018. Up to 1198 conditions per place. [2024-06-28 00:09:35,699 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 208 selfloop transitions, 83 changer transitions 9/304 dead transitions. [2024-06-28 00:09:35,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 304 transitions, 3168 flow [2024-06-28 00:09:35,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:09:35,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:09:35,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 173 transitions. [2024-06-28 00:09:35,700 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4505208333333333 [2024-06-28 00:09:35,700 INFO L175 Difference]: Start difference. First operand has 419 places, 289 transitions, 2486 flow. Second operand 12 states and 173 transitions. [2024-06-28 00:09:35,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 304 transitions, 3168 flow [2024-06-28 00:09:36,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 304 transitions, 3006 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-28 00:09:36,742 INFO L231 Difference]: Finished difference. Result has 417 places, 286 transitions, 2473 flow [2024-06-28 00:09:36,742 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2324, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2473, PETRI_PLACES=417, PETRI_TRANSITIONS=286} [2024-06-28 00:09:36,742 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 386 predicate places. [2024-06-28 00:09:36,742 INFO L495 AbstractCegarLoop]: Abstraction has has 417 places, 286 transitions, 2473 flow [2024-06-28 00:09:36,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-06-28 00:09:36,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:36,742 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:09:36,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2024-06-28 00:09:36,743 INFO L420 AbstractCegarLoop]: === Iteration 186 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:09:36,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:36,743 INFO L85 PathProgramCache]: Analyzing trace with hash -1033045806, now seen corresponding path program 18 times [2024-06-28 00:09:36,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:36,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297072112] [2024-06-28 00:09:36,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:36,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:36,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:38,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:09:38,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:38,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297072112] [2024-06-28 00:09:38,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297072112] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:38,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:38,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:09:38,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754985337] [2024-06-28 00:09:38,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:38,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:09:38,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:38,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:09:38,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:09:38,586 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:09:38,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 286 transitions, 2473 flow. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:38,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:38,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:09:38,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:39,049 INFO L124 PetriNetUnfolderBase]: 756/1541 cut-off events. [2024-06-28 00:09:39,049 INFO L125 PetriNetUnfolderBase]: For 325015/325015 co-relation queries the response was YES. [2024-06-28 00:09:39,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9138 conditions, 1541 events. 756/1541 cut-off events. For 325015/325015 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 10009 event pairs, 171 based on Foata normal form. 8/1543 useless extension candidates. Maximal degree in co-relation 8970. Up to 1179 conditions per place. [2024-06-28 00:09:39,068 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 199 selfloop transitions, 88 changer transitions 10/301 dead transitions. [2024-06-28 00:09:39,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 423 places, 301 transitions, 3149 flow [2024-06-28 00:09:39,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:09:39,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:09:39,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 165 transitions. [2024-06-28 00:09:39,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46875 [2024-06-28 00:09:39,069 INFO L175 Difference]: Start difference. First operand has 417 places, 286 transitions, 2473 flow. Second operand 11 states and 165 transitions. [2024-06-28 00:09:39,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 423 places, 301 transitions, 3149 flow [2024-06-28 00:09:39,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 301 transitions, 2912 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-28 00:09:39,943 INFO L231 Difference]: Finished difference. Result has 412 places, 282 transitions, 2394 flow [2024-06-28 00:09:39,943 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2240, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2394, PETRI_PLACES=412, PETRI_TRANSITIONS=282} [2024-06-28 00:09:39,943 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 381 predicate places. [2024-06-28 00:09:39,943 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 282 transitions, 2394 flow [2024-06-28 00:09:39,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:39,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:39,944 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:09:39,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2024-06-28 00:09:39,944 INFO L420 AbstractCegarLoop]: === Iteration 187 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:09:39,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:39,944 INFO L85 PathProgramCache]: Analyzing trace with hash -499510490, now seen corresponding path program 19 times [2024-06-28 00:09:39,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:39,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118526788] [2024-06-28 00:09:39,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:39,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:39,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:41,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:09:41,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:41,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118526788] [2024-06-28 00:09:41,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118526788] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:41,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:41,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:09:41,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991132852] [2024-06-28 00:09:41,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:41,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:09:41,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:41,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:09:41,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:09:42,135 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:09:42,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 282 transitions, 2394 flow. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:42,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:42,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:09:42,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:42,620 INFO L124 PetriNetUnfolderBase]: 728/1483 cut-off events. [2024-06-28 00:09:42,620 INFO L125 PetriNetUnfolderBase]: For 241457/241457 co-relation queries the response was YES. [2024-06-28 00:09:42,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7550 conditions, 1483 events. 728/1483 cut-off events. For 241457/241457 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 9591 event pairs, 159 based on Foata normal form. 8/1485 useless extension candidates. Maximal degree in co-relation 7385. Up to 1135 conditions per place. [2024-06-28 00:09:42,636 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 189 selfloop transitions, 95 changer transitions 9/297 dead transitions. [2024-06-28 00:09:42,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 297 transitions, 3058 flow [2024-06-28 00:09:42,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:09:42,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:09:42,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 171 transitions. [2024-06-28 00:09:42,637 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4453125 [2024-06-28 00:09:42,637 INFO L175 Difference]: Start difference. First operand has 412 places, 282 transitions, 2394 flow. Second operand 12 states and 171 transitions. [2024-06-28 00:09:42,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 297 transitions, 3058 flow [2024-06-28 00:09:43,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 297 transitions, 2872 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-28 00:09:43,263 INFO L231 Difference]: Finished difference. Result has 409 places, 279 transitions, 2384 flow [2024-06-28 00:09:43,263 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2210, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2384, PETRI_PLACES=409, PETRI_TRANSITIONS=279} [2024-06-28 00:09:43,263 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 378 predicate places. [2024-06-28 00:09:43,263 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 279 transitions, 2384 flow [2024-06-28 00:09:43,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:43,263 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:43,263 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:09:43,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2024-06-28 00:09:43,264 INFO L420 AbstractCegarLoop]: === Iteration 188 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:09:43,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:43,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1318985118, now seen corresponding path program 20 times [2024-06-28 00:09:43,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:43,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751907831] [2024-06-28 00:09:43,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:43,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:43,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:45,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:09:45,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:45,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751907831] [2024-06-28 00:09:45,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751907831] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:45,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:45,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:09:45,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64586563] [2024-06-28 00:09:45,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:45,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:09:45,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:45,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:09:45,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:09:45,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 00:09:45,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 279 transitions, 2384 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 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) [2024-06-28 00:09:45,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:45,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 00:09:45,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:46,413 INFO L124 PetriNetUnfolderBase]: 734/1512 cut-off events. [2024-06-28 00:09:46,413 INFO L125 PetriNetUnfolderBase]: For 270052/270052 co-relation queries the response was YES. [2024-06-28 00:09:46,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8398 conditions, 1512 events. 734/1512 cut-off events. For 270052/270052 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 9818 event pairs, 279 based on Foata normal form. 6/1517 useless extension candidates. Maximal degree in co-relation 8234. Up to 1276 conditions per place. [2024-06-28 00:09:46,429 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 262 selfloop transitions, 25 changer transitions 9/300 dead transitions. [2024-06-28 00:09:46,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 300 transitions, 3372 flow [2024-06-28 00:09:46,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-28 00:09:46,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-28 00:09:46,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 174 transitions. [2024-06-28 00:09:46,430 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38839285714285715 [2024-06-28 00:09:46,430 INFO L175 Difference]: Start difference. First operand has 409 places, 279 transitions, 2384 flow. Second operand 14 states and 174 transitions. [2024-06-28 00:09:46,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 300 transitions, 3372 flow [2024-06-28 00:09:47,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 300 transitions, 3107 flow, removed 9 selfloop flow, removed 12 redundant places. [2024-06-28 00:09:47,205 INFO L231 Difference]: Finished difference. Result has 407 places, 276 transitions, 2164 flow [2024-06-28 00:09:47,206 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2129, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2164, PETRI_PLACES=407, PETRI_TRANSITIONS=276} [2024-06-28 00:09:47,206 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 376 predicate places. [2024-06-28 00:09:47,206 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 276 transitions, 2164 flow [2024-06-28 00:09:47,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 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) [2024-06-28 00:09:47,206 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:47,206 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:09:47,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2024-06-28 00:09:47,206 INFO L420 AbstractCegarLoop]: === Iteration 189 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:09:47,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:47,207 INFO L85 PathProgramCache]: Analyzing trace with hash -67039184, now seen corresponding path program 21 times [2024-06-28 00:09:47,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:47,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286637405] [2024-06-28 00:09:47,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:47,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:47,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:49,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:09:49,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:49,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286637405] [2024-06-28 00:09:49,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286637405] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:49,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:49,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:09:49,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082531707] [2024-06-28 00:09:49,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:49,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:09:49,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:49,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:09:49,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:09:49,488 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 00:09:49,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 276 transitions, 2164 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 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) [2024-06-28 00:09:49,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:49,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 00:09:49,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:50,192 INFO L124 PetriNetUnfolderBase]: 746/1532 cut-off events. [2024-06-28 00:09:50,192 INFO L125 PetriNetUnfolderBase]: For 340730/340730 co-relation queries the response was YES. [2024-06-28 00:09:50,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9344 conditions, 1532 events. 746/1532 cut-off events. For 340730/340730 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 9908 event pairs, 289 based on Foata normal form. 6/1537 useless extension candidates. Maximal degree in co-relation 9182. Up to 1340 conditions per place. [2024-06-28 00:09:50,209 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 261 selfloop transitions, 25 changer transitions 6/296 dead transitions. [2024-06-28 00:09:50,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 296 transitions, 3134 flow [2024-06-28 00:09:50,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-28 00:09:50,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-28 00:09:50,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 174 transitions. [2024-06-28 00:09:50,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38839285714285715 [2024-06-28 00:09:50,210 INFO L175 Difference]: Start difference. First operand has 407 places, 276 transitions, 2164 flow. Second operand 14 states and 174 transitions. [2024-06-28 00:09:50,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 296 transitions, 3134 flow [2024-06-28 00:09:51,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 296 transitions, 3080 flow, removed 6 selfloop flow, removed 13 redundant places. [2024-06-28 00:09:51,431 INFO L231 Difference]: Finished difference. Result has 404 places, 274 transitions, 2156 flow [2024-06-28 00:09:51,431 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2116, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2156, PETRI_PLACES=404, PETRI_TRANSITIONS=274} [2024-06-28 00:09:51,432 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 373 predicate places. [2024-06-28 00:09:51,432 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 274 transitions, 2156 flow [2024-06-28 00:09:51,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 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) [2024-06-28 00:09:51,432 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:51,432 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:09:51,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2024-06-28 00:09:51,432 INFO L420 AbstractCegarLoop]: === Iteration 190 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:09:51,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:51,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1690209498, now seen corresponding path program 22 times [2024-06-28 00:09:51,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:51,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161852017] [2024-06-28 00:09:51,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:51,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:51,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:53,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:09:53,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:53,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161852017] [2024-06-28 00:09:53,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161852017] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:53,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:53,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:09:53,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375647113] [2024-06-28 00:09:53,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:53,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:09:53,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:53,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:09:53,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:09:53,886 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 00:09:53,886 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 274 transitions, 2156 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 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) [2024-06-28 00:09:53,886 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:53,886 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 00:09:53,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:54,545 INFO L124 PetriNetUnfolderBase]: 722/1480 cut-off events. [2024-06-28 00:09:54,546 INFO L125 PetriNetUnfolderBase]: For 278453/278453 co-relation queries the response was YES. [2024-06-28 00:09:54,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7998 conditions, 1480 events. 722/1480 cut-off events. For 278453/278453 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 9519 event pairs, 281 based on Foata normal form. 8/1487 useless extension candidates. Maximal degree in co-relation 7838. Up to 1346 conditions per place. [2024-06-28 00:09:54,560 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 256 selfloop transitions, 18 changer transitions 12/290 dead transitions. [2024-06-28 00:09:54,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 290 transitions, 2802 flow [2024-06-28 00:09:54,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-28 00:09:54,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-28 00:09:54,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 168 transitions. [2024-06-28 00:09:54,561 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-28 00:09:54,561 INFO L175 Difference]: Start difference. First operand has 404 places, 274 transitions, 2156 flow. Second operand 14 states and 168 transitions. [2024-06-28 00:09:54,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 290 transitions, 2802 flow [2024-06-28 00:09:55,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 290 transitions, 2750 flow, removed 2 selfloop flow, removed 13 redundant places. [2024-06-28 00:09:55,493 INFO L231 Difference]: Finished difference. Result has 403 places, 269 transitions, 2110 flow [2024-06-28 00:09:55,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2104, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2110, PETRI_PLACES=403, PETRI_TRANSITIONS=269} [2024-06-28 00:09:55,494 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 372 predicate places. [2024-06-28 00:09:55,494 INFO L495 AbstractCegarLoop]: Abstraction has has 403 places, 269 transitions, 2110 flow [2024-06-28 00:09:55,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 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) [2024-06-28 00:09:55,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:55,494 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:09:55,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2024-06-28 00:09:55,494 INFO L420 AbstractCegarLoop]: === Iteration 191 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:09:55,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:55,494 INFO L85 PathProgramCache]: Analyzing trace with hash 583436100, now seen corresponding path program 23 times [2024-06-28 00:09:55,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:55,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959642555] [2024-06-28 00:09:55,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:55,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:55,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:57,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:09:57,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:57,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959642555] [2024-06-28 00:09:57,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959642555] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:57,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:57,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:09:57,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792961957] [2024-06-28 00:09:57,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:57,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:09:57,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:57,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:09:57,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:09:57,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 00:09:57,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 269 transitions, 2110 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 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) [2024-06-28 00:09:57,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:57,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 00:09:57,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:58,364 INFO L124 PetriNetUnfolderBase]: 715/1465 cut-off events. [2024-06-28 00:09:58,364 INFO L125 PetriNetUnfolderBase]: For 275853/275853 co-relation queries the response was YES. [2024-06-28 00:09:58,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7907 conditions, 1465 events. 715/1465 cut-off events. For 275853/275853 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 9367 event pairs, 283 based on Foata normal form. 8/1472 useless extension candidates. Maximal degree in co-relation 7748. Up to 1342 conditions per place. [2024-06-28 00:09:58,381 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 255 selfloop transitions, 16 changer transitions 9/284 dead transitions. [2024-06-28 00:09:58,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 284 transitions, 2742 flow [2024-06-28 00:09:58,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:09:58,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:09:58,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 147 transitions. [2024-06-28 00:09:58,382 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3828125 [2024-06-28 00:09:58,382 INFO L175 Difference]: Start difference. First operand has 403 places, 269 transitions, 2110 flow. Second operand 12 states and 147 transitions. [2024-06-28 00:09:58,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 284 transitions, 2742 flow [2024-06-28 00:09:59,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 284 transitions, 2690 flow, removed 8 selfloop flow, removed 14 redundant places. [2024-06-28 00:09:59,212 INFO L231 Difference]: Finished difference. Result has 394 places, 266 transitions, 2078 flow [2024-06-28 00:09:59,212 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2062, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2078, PETRI_PLACES=394, PETRI_TRANSITIONS=266} [2024-06-28 00:09:59,213 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 363 predicate places. [2024-06-28 00:09:59,213 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 266 transitions, 2078 flow [2024-06-28 00:09:59,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 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) [2024-06-28 00:09:59,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:59,213 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:09:59,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2024-06-28 00:09:59,214 INFO L420 AbstractCegarLoop]: === Iteration 192 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:09:59,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:59,214 INFO L85 PathProgramCache]: Analyzing trace with hash 583445400, now seen corresponding path program 24 times [2024-06-28 00:09:59,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:59,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433554929] [2024-06-28 00:09:59,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:59,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:59,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:10:00,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:10:00,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:10:00,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433554929] [2024-06-28 00:10:00,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433554929] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:10:00,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:10:00,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:10:00,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658289446] [2024-06-28 00:10:00,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:10:00,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:10:00,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:10:00,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:10:00,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:10:01,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 00:10:01,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 266 transitions, 2078 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 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) [2024-06-28 00:10:01,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:10:01,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 00:10:01,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:10:01,726 INFO L124 PetriNetUnfolderBase]: 706/1450 cut-off events. [2024-06-28 00:10:01,726 INFO L125 PetriNetUnfolderBase]: For 246043/246043 co-relation queries the response was YES. [2024-06-28 00:10:01,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7724 conditions, 1450 events. 706/1450 cut-off events. For 246043/246043 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 9240 event pairs, 277 based on Foata normal form. 6/1455 useless extension candidates. Maximal degree in co-relation 7568. Up to 1276 conditions per place. [2024-06-28 00:10:01,742 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 257 selfloop transitions, 17 changer transitions 7/285 dead transitions. [2024-06-28 00:10:01,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 285 transitions, 3008 flow [2024-06-28 00:10:01,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 00:10:01,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 00:10:01,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 159 transitions. [2024-06-28 00:10:01,743 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38221153846153844 [2024-06-28 00:10:01,743 INFO L175 Difference]: Start difference. First operand has 394 places, 266 transitions, 2078 flow. Second operand 13 states and 159 transitions. [2024-06-28 00:10:01,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 285 transitions, 3008 flow [2024-06-28 00:10:02,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 285 transitions, 2962 flow, removed 7 selfloop flow, removed 11 redundant places. [2024-06-28 00:10:02,451 INFO L231 Difference]: Finished difference. Result has 393 places, 263 transitions, 2058 flow [2024-06-28 00:10:02,451 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2040, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2058, PETRI_PLACES=393, PETRI_TRANSITIONS=263} [2024-06-28 00:10:02,451 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 362 predicate places. [2024-06-28 00:10:02,451 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 263 transitions, 2058 flow [2024-06-28 00:10:02,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 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) [2024-06-28 00:10:02,452 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:10:02,452 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:10:02,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2024-06-28 00:10:02,452 INFO L420 AbstractCegarLoop]: === Iteration 193 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:10:02,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:10:02,452 INFO L85 PathProgramCache]: Analyzing trace with hash -482887740, now seen corresponding path program 25 times [2024-06-28 00:10:02,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:10:02,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502503223] [2024-06-28 00:10:02,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:10:02,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:10:02,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:10:04,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:10:04,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:10:04,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502503223] [2024-06-28 00:10:04,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502503223] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:10:04,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:10:04,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:10:04,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120276759] [2024-06-28 00:10:04,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:10:04,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:10:04,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:10:04,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:10:04,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:10:04,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 00:10:04,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 263 transitions, 2058 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 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) [2024-06-28 00:10:04,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:10:04,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 00:10:04,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:10:05,081 INFO L124 PetriNetUnfolderBase]: 681/1395 cut-off events. [2024-06-28 00:10:05,082 INFO L125 PetriNetUnfolderBase]: For 192267/192267 co-relation queries the response was YES. [2024-06-28 00:10:05,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6425 conditions, 1395 events. 681/1395 cut-off events. For 192267/192267 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 8868 event pairs, 269 based on Foata normal form. 8/1402 useless extension candidates. Maximal degree in co-relation 6270. Up to 1276 conditions per place. [2024-06-28 00:10:05,096 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 250 selfloop transitions, 15 changer transitions 9/278 dead transitions. [2024-06-28 00:10:05,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 278 transitions, 2672 flow [2024-06-28 00:10:05,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 00:10:05,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 00:10:05,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 154 transitions. [2024-06-28 00:10:05,097 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3701923076923077 [2024-06-28 00:10:05,097 INFO L175 Difference]: Start difference. First operand has 393 places, 263 transitions, 2058 flow. Second operand 13 states and 154 transitions. [2024-06-28 00:10:05,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 278 transitions, 2672 flow [2024-06-28 00:10:05,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 278 transitions, 2619 flow, removed 7 selfloop flow, removed 14 redundant places. [2024-06-28 00:10:05,614 INFO L231 Difference]: Finished difference. Result has 389 places, 260 transitions, 2023 flow [2024-06-28 00:10:05,614 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2009, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2023, PETRI_PLACES=389, PETRI_TRANSITIONS=260} [2024-06-28 00:10:05,615 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 358 predicate places. [2024-06-28 00:10:05,615 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 260 transitions, 2023 flow [2024-06-28 00:10:05,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 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) [2024-06-28 00:10:05,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:10:05,615 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:10:05,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2024-06-28 00:10:05,615 INFO L420 AbstractCegarLoop]: === Iteration 194 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:10:05,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:10:05,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1792074338, now seen corresponding path program 26 times [2024-06-28 00:10:05,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:10:05,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360564113] [2024-06-28 00:10:05,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:10:05,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:10:05,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:10:07,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:10:07,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:10:07,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360564113] [2024-06-28 00:10:07,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360564113] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:10:07,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:10:07,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:10:07,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364678972] [2024-06-28 00:10:07,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:10:07,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:10:07,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:10:07,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:10:07,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:10:07,511 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:10:07,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 260 transitions, 2023 flow. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:07,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:10:07,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:10:07,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:10:07,904 INFO L124 PetriNetUnfolderBase]: 676/1385 cut-off events. [2024-06-28 00:10:07,904 INFO L125 PetriNetUnfolderBase]: For 187178/187178 co-relation queries the response was YES. [2024-06-28 00:10:07,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6314 conditions, 1385 events. 676/1385 cut-off events. For 187178/187178 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 8801 event pairs, 154 based on Foata normal form. 8/1387 useless extension candidates. Maximal degree in co-relation 6162. Up to 1047 conditions per place. [2024-06-28 00:10:07,919 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 183 selfloop transitions, 79 changer transitions 9/275 dead transitions. [2024-06-28 00:10:07,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 275 transitions, 2627 flow [2024-06-28 00:10:07,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:10:07,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:10:07,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 169 transitions. [2024-06-28 00:10:07,920 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4401041666666667 [2024-06-28 00:10:07,920 INFO L175 Difference]: Start difference. First operand has 389 places, 260 transitions, 2023 flow. Second operand 12 states and 169 transitions. [2024-06-28 00:10:07,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 275 transitions, 2627 flow [2024-06-28 00:10:08,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 275 transitions, 2585 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-28 00:10:08,419 INFO L231 Difference]: Finished difference. Result has 384 places, 257 transitions, 2128 flow [2024-06-28 00:10:08,420 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1985, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2128, PETRI_PLACES=384, PETRI_TRANSITIONS=257} [2024-06-28 00:10:08,420 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 353 predicate places. [2024-06-28 00:10:08,420 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 257 transitions, 2128 flow [2024-06-28 00:10:08,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:08,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:10:08,421 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:10:08,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2024-06-28 00:10:08,421 INFO L420 AbstractCegarLoop]: === Iteration 195 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:10:08,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:10:08,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1040455116, now seen corresponding path program 27 times [2024-06-28 00:10:08,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:10:08,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824842462] [2024-06-28 00:10:08,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:10:08,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:10:08,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:10:10,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:10:10,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:10:10,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824842462] [2024-06-28 00:10:10,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824842462] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:10:10,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:10:10,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:10:10,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950215091] [2024-06-28 00:10:10,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:10:10,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:10:10,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:10:10,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:10:10,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:10:10,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:10:10,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 257 transitions, 2128 flow. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:10,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:10:10,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:10:10,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:10:11,213 INFO L124 PetriNetUnfolderBase]: 671/1378 cut-off events. [2024-06-28 00:10:11,213 INFO L125 PetriNetUnfolderBase]: For 184361/184361 co-relation queries the response was YES. [2024-06-28 00:10:11,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6374 conditions, 1378 events. 671/1378 cut-off events. For 184361/184361 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 8774 event pairs, 154 based on Foata normal form. 8/1380 useless extension candidates. Maximal degree in co-relation 6223. Up to 1040 conditions per place. [2024-06-28 00:10:11,227 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 182 selfloop transitions, 77 changer transitions 9/272 dead transitions. [2024-06-28 00:10:11,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 272 transitions, 2722 flow [2024-06-28 00:10:11,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:10:11,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:10:11,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 169 transitions. [2024-06-28 00:10:11,228 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4401041666666667 [2024-06-28 00:10:11,228 INFO L175 Difference]: Start difference. First operand has 384 places, 257 transitions, 2128 flow. Second operand 12 states and 169 transitions. [2024-06-28 00:10:11,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 272 transitions, 2722 flow [2024-06-28 00:10:11,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 272 transitions, 2562 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-28 00:10:11,833 INFO L231 Difference]: Finished difference. Result has 383 places, 254 transitions, 2107 flow [2024-06-28 00:10:11,834 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1968, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2107, PETRI_PLACES=383, PETRI_TRANSITIONS=254} [2024-06-28 00:10:11,834 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 352 predicate places. [2024-06-28 00:10:11,834 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 254 transitions, 2107 flow [2024-06-28 00:10:11,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:11,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:10:11,834 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:10:11,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2024-06-28 00:10:11,834 INFO L420 AbstractCegarLoop]: === Iteration 196 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:10:11,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:10:11,834 INFO L85 PathProgramCache]: Analyzing trace with hash -1234394526, now seen corresponding path program 28 times [2024-06-28 00:10:11,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:10:11,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806921043] [2024-06-28 00:10:11,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:10:11,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:10:11,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:10:13,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:10:13,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:10:13,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806921043] [2024-06-28 00:10:13,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806921043] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:10:13,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:10:13,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:10:13,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294490871] [2024-06-28 00:10:13,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:10:13,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:10:13,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:10:13,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:10:13,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:10:13,960 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:10:13,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 254 transitions, 2107 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-06-28 00:10:13,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:10:13,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:10:13,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:10:14,547 INFO L124 PetriNetUnfolderBase]: 644/1325 cut-off events. [2024-06-28 00:10:14,547 INFO L125 PetriNetUnfolderBase]: For 117549/117549 co-relation queries the response was YES. [2024-06-28 00:10:14,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5138 conditions, 1325 events. 644/1325 cut-off events. For 117549/117549 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 8433 event pairs, 142 based on Foata normal form. 8/1327 useless extension candidates. Maximal degree in co-relation 4987. Up to 987 conditions per place. [2024-06-28 00:10:14,560 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 176 selfloop transitions, 79 changer transitions 9/268 dead transitions. [2024-06-28 00:10:14,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 268 transitions, 2669 flow [2024-06-28 00:10:14,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:10:14,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:10:14,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 166 transitions. [2024-06-28 00:10:14,561 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4322916666666667 [2024-06-28 00:10:14,561 INFO L175 Difference]: Start difference. First operand has 383 places, 254 transitions, 2107 flow. Second operand 12 states and 166 transitions. [2024-06-28 00:10:14,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 268 transitions, 2669 flow [2024-06-28 00:10:14,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 268 transitions, 2509 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-28 00:10:14,890 INFO L231 Difference]: Finished difference. Result has 381 places, 250 transitions, 2068 flow [2024-06-28 00:10:14,890 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1947, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2068, PETRI_PLACES=381, PETRI_TRANSITIONS=250} [2024-06-28 00:10:14,890 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 350 predicate places. [2024-06-28 00:10:14,890 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 250 transitions, 2068 flow [2024-06-28 00:10:14,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-06-28 00:10:14,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:10:14,891 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:10:14,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2024-06-28 00:10:14,891 INFO L420 AbstractCegarLoop]: === Iteration 197 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:10:14,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:10:14,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1155011094, now seen corresponding path program 1 times [2024-06-28 00:10:14,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:10:14,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699128224] [2024-06-28 00:10:14,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:10:14,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:10:14,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:10:16,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:10:16,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:10:16,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699128224] [2024-06-28 00:10:16,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699128224] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:10:16,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:10:16,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:10:16,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896530673] [2024-06-28 00:10:16,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:10:16,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:10:16,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:10:16,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:10:16,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:10:17,078 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:10:17,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 250 transitions, 2068 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-06-28 00:10:17,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:10:17,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:10:17,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:10:17,532 INFO L124 PetriNetUnfolderBase]: 635/1314 cut-off events. [2024-06-28 00:10:17,533 INFO L125 PetriNetUnfolderBase]: For 100016/100016 co-relation queries the response was YES. [2024-06-28 00:10:17,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5049 conditions, 1314 events. 635/1314 cut-off events. For 100016/100016 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 8327 event pairs, 146 based on Foata normal form. 6/1319 useless extension candidates. Maximal degree in co-relation 4899. Up to 1156 conditions per place. [2024-06-28 00:10:17,543 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 221 selfloop transitions, 32 changer transitions 12/269 dead transitions. [2024-06-28 00:10:17,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 269 transitions, 2646 flow [2024-06-28 00:10:17,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:10:17,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:10:17,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 164 transitions. [2024-06-28 00:10:17,544 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4270833333333333 [2024-06-28 00:10:17,544 INFO L175 Difference]: Start difference. First operand has 381 places, 250 transitions, 2068 flow. Second operand 12 states and 164 transitions. [2024-06-28 00:10:17,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 269 transitions, 2646 flow [2024-06-28 00:10:17,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 269 transitions, 2429 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-28 00:10:17,761 INFO L231 Difference]: Finished difference. Result has 377 places, 245 transitions, 1897 flow [2024-06-28 00:10:17,761 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1853, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1897, PETRI_PLACES=377, PETRI_TRANSITIONS=245} [2024-06-28 00:10:17,762 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 346 predicate places. [2024-06-28 00:10:17,762 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 245 transitions, 1897 flow [2024-06-28 00:10:17,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-06-28 00:10:17,762 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:10:17,762 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:10:17,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2024-06-28 00:10:17,762 INFO L420 AbstractCegarLoop]: === Iteration 198 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:10:17,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:10:17,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1208985662, now seen corresponding path program 2 times [2024-06-28 00:10:17,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:10:17,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211615688] [2024-06-28 00:10:17,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:10:17,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:10:17,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:10:19,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:10:19,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:10:19,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211615688] [2024-06-28 00:10:19,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211615688] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:10:19,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:10:19,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:10:19,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507004149] [2024-06-28 00:10:19,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:10:19,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:10:19,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:10:19,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:10:19,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:10:19,867 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:10:19,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 245 transitions, 1897 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-06-28 00:10:19,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:10:19,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:10:19,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:10:20,319 INFO L124 PetriNetUnfolderBase]: 624/1297 cut-off events. [2024-06-28 00:10:20,319 INFO L125 PetriNetUnfolderBase]: For 98292/98292 co-relation queries the response was YES. [2024-06-28 00:10:20,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4789 conditions, 1297 events. 624/1297 cut-off events. For 98292/98292 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 8235 event pairs, 121 based on Foata normal form. 6/1302 useless extension candidates. Maximal degree in co-relation 4641. Up to 978 conditions per place. [2024-06-28 00:10:20,329 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 215 selfloop transitions, 25 changer transitions 23/267 dead transitions. [2024-06-28 00:10:20,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 267 transitions, 2475 flow [2024-06-28 00:10:20,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:10:20,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:10:20,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 169 transitions. [2024-06-28 00:10:20,330 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4401041666666667 [2024-06-28 00:10:20,330 INFO L175 Difference]: Start difference. First operand has 377 places, 245 transitions, 1897 flow. Second operand 12 states and 169 transitions. [2024-06-28 00:10:20,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 267 transitions, 2475 flow [2024-06-28 00:10:20,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 267 transitions, 2405 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-28 00:10:20,593 INFO L231 Difference]: Finished difference. Result has 373 places, 232 transitions, 1803 flow [2024-06-28 00:10:20,593 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1827, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1803, PETRI_PLACES=373, PETRI_TRANSITIONS=232} [2024-06-28 00:10:20,593 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 342 predicate places. [2024-06-28 00:10:20,593 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 232 transitions, 1803 flow [2024-06-28 00:10:20,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-06-28 00:10:20,594 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:10:20,594 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:10:20,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2024-06-28 00:10:20,594 INFO L420 AbstractCegarLoop]: === Iteration 199 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:10:20,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:10:20,595 INFO L85 PathProgramCache]: Analyzing trace with hash 1489915966, now seen corresponding path program 3 times [2024-06-28 00:10:20,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:10:20,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901043138] [2024-06-28 00:10:20,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:10:20,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:10:20,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:10:22,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:10:22,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:10:22,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901043138] [2024-06-28 00:10:22,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901043138] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:10:22,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:10:22,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:10:22,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132683458] [2024-06-28 00:10:22,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:10:22,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:10:22,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:10:22,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:10:22,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:10:22,893 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:10:22,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 232 transitions, 1803 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-06-28 00:10:22,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:10:22,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:10:22,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:10:23,263 INFO L124 PetriNetUnfolderBase]: 578/1211 cut-off events. [2024-06-28 00:10:23,263 INFO L125 PetriNetUnfolderBase]: For 95142/95142 co-relation queries the response was YES. [2024-06-28 00:10:23,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4527 conditions, 1211 events. 578/1211 cut-off events. For 95142/95142 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 7603 event pairs, 124 based on Foata normal form. 6/1216 useless extension candidates. Maximal degree in co-relation 4381. Up to 1032 conditions per place. [2024-06-28 00:10:23,275 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 206 selfloop transitions, 23 changer transitions 19/252 dead transitions. [2024-06-28 00:10:23,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 252 transitions, 2347 flow [2024-06-28 00:10:23,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:10:23,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:10:23,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 163 transitions. [2024-06-28 00:10:23,275 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4244791666666667 [2024-06-28 00:10:23,275 INFO L175 Difference]: Start difference. First operand has 373 places, 232 transitions, 1803 flow. Second operand 12 states and 163 transitions. [2024-06-28 00:10:23,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 252 transitions, 2347 flow [2024-06-28 00:10:23,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 252 transitions, 2265 flow, removed 4 selfloop flow, removed 17 redundant places. [2024-06-28 00:10:23,551 INFO L231 Difference]: Finished difference. Result has 357 places, 222 transitions, 1713 flow [2024-06-28 00:10:23,551 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1721, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1713, PETRI_PLACES=357, PETRI_TRANSITIONS=222} [2024-06-28 00:10:23,552 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 326 predicate places. [2024-06-28 00:10:23,552 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 222 transitions, 1713 flow [2024-06-28 00:10:23,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-06-28 00:10:23,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:10:23,552 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:10:23,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2024-06-28 00:10:23,553 INFO L420 AbstractCegarLoop]: === Iteration 200 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:10:23,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:10:23,553 INFO L85 PathProgramCache]: Analyzing trace with hash 80133622, now seen corresponding path program 4 times [2024-06-28 00:10:23,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:10:23,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224796694] [2024-06-28 00:10:23,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:10:23,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:10:23,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:10:25,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:10:25,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:10:25,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224796694] [2024-06-28 00:10:25,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224796694] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:10:25,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:10:25,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:10:25,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48445118] [2024-06-28 00:10:25,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:10:25,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:10:25,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:10:25,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:10:25,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:10:25,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:10:25,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 222 transitions, 1713 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-06-28 00:10:25,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:10:25,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:10:25,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:10:26,161 INFO L124 PetriNetUnfolderBase]: 553/1164 cut-off events. [2024-06-28 00:10:26,161 INFO L125 PetriNetUnfolderBase]: For 90593/90593 co-relation queries the response was YES. [2024-06-28 00:10:26,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4344 conditions, 1164 events. 553/1164 cut-off events. For 90593/90593 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 7259 event pairs, 113 based on Foata normal form. 6/1169 useless extension candidates. Maximal degree in co-relation 4201. Up to 970 conditions per place. [2024-06-28 00:10:26,173 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 197 selfloop transitions, 14 changer transitions 28/243 dead transitions. [2024-06-28 00:10:26,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 243 transitions, 2241 flow [2024-06-28 00:10:26,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:10:26,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:10:26,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 163 transitions. [2024-06-28 00:10:26,174 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4244791666666667 [2024-06-28 00:10:26,174 INFO L175 Difference]: Start difference. First operand has 357 places, 222 transitions, 1713 flow. Second operand 12 states and 163 transitions. [2024-06-28 00:10:26,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 243 transitions, 2241 flow [2024-06-28 00:10:26,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 243 transitions, 2183 flow, removed 6 selfloop flow, removed 13 redundant places. [2024-06-28 00:10:26,415 INFO L231 Difference]: Finished difference. Result has 345 places, 206 transitions, 1572 flow [2024-06-28 00:10:26,415 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1655, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1572, PETRI_PLACES=345, PETRI_TRANSITIONS=206} [2024-06-28 00:10:26,415 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 314 predicate places. [2024-06-28 00:10:26,416 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 206 transitions, 1572 flow [2024-06-28 00:10:26,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-06-28 00:10:26,416 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:10:26,416 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:10:26,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2024-06-28 00:10:26,416 INFO L420 AbstractCegarLoop]: === Iteration 201 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:10:26,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:10:26,417 INFO L85 PathProgramCache]: Analyzing trace with hash -1382730668, now seen corresponding path program 5 times [2024-06-28 00:10:26,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:10:26,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555884935] [2024-06-28 00:10:26,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:10:26,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:10:26,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:10:28,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:10:28,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:10:28,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555884935] [2024-06-28 00:10:28,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555884935] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:10:28,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:10:28,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:10:28,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023570378] [2024-06-28 00:10:28,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:10:28,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:10:28,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:10:28,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:10:28,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:10:28,510 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:10:28,511 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 206 transitions, 1572 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-06-28 00:10:28,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:10:28,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:10:28,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:10:28,889 INFO L124 PetriNetUnfolderBase]: 513/1084 cut-off events. [2024-06-28 00:10:28,889 INFO L125 PetriNetUnfolderBase]: For 83338/83338 co-relation queries the response was YES. [2024-06-28 00:10:28,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4039 conditions, 1084 events. 513/1084 cut-off events. For 83338/83338 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 6625 event pairs, 74 based on Foata normal form. 6/1089 useless extension candidates. Maximal degree in co-relation 3901. Up to 805 conditions per place. [2024-06-28 00:10:28,899 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 173 selfloop transitions, 7 changer transitions 45/229 dead transitions. [2024-06-28 00:10:28,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 229 transitions, 2076 flow [2024-06-28 00:10:28,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:10:28,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:10:28,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 163 transitions. [2024-06-28 00:10:28,900 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4244791666666667 [2024-06-28 00:10:28,900 INFO L175 Difference]: Start difference. First operand has 345 places, 206 transitions, 1572 flow. Second operand 12 states and 163 transitions. [2024-06-28 00:10:28,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 229 transitions, 2076 flow [2024-06-28 00:10:29,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 229 transitions, 2012 flow, removed 6 selfloop flow, removed 14 redundant places. [2024-06-28 00:10:29,054 INFO L231 Difference]: Finished difference. Result has 324 places, 180 transitions, 1347 flow [2024-06-28 00:10:29,054 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1508, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1347, PETRI_PLACES=324, PETRI_TRANSITIONS=180} [2024-06-28 00:10:29,054 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 293 predicate places. [2024-06-28 00:10:29,054 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 180 transitions, 1347 flow [2024-06-28 00:10:29,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-06-28 00:10:29,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:10:29,055 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:10:29,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2024-06-28 00:10:29,055 INFO L420 AbstractCegarLoop]: === Iteration 202 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:10:29,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:10:29,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1622578872, now seen corresponding path program 6 times [2024-06-28 00:10:29,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:10:29,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969843379] [2024-06-28 00:10:29,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:10:29,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:10:29,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:10:30,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:10:30,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:10:30,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969843379] [2024-06-28 00:10:30,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969843379] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:10:30,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:10:30,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:10:30,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003417196] [2024-06-28 00:10:30,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:10:30,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:10:30,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:10:30,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:10:30,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:10:31,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:10:31,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 180 transitions, 1347 flow. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:31,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:10:31,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:10:31,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:10:31,416 INFO L124 PetriNetUnfolderBase]: 423/892 cut-off events. [2024-06-28 00:10:31,416 INFO L125 PetriNetUnfolderBase]: For 76286/76290 co-relation queries the response was YES. [2024-06-28 00:10:31,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3344 conditions, 892 events. 423/892 cut-off events. For 76286/76290 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 5244 event pairs, 63 based on Foata normal form. 10/901 useless extension candidates. Maximal degree in co-relation 3224. Up to 654 conditions per place. [2024-06-28 00:10:31,424 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 146 selfloop transitions, 32 changer transitions 15/197 dead transitions. [2024-06-28 00:10:31,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 197 transitions, 1771 flow [2024-06-28 00:10:31,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:10:31,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:10:31,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 164 transitions. [2024-06-28 00:10:31,425 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4270833333333333 [2024-06-28 00:10:31,425 INFO L175 Difference]: Start difference. First operand has 324 places, 180 transitions, 1347 flow. Second operand 12 states and 164 transitions. [2024-06-28 00:10:31,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 197 transitions, 1771 flow [2024-06-28 00:10:31,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 197 transitions, 1727 flow, removed 10 selfloop flow, removed 17 redundant places. [2024-06-28 00:10:31,564 INFO L231 Difference]: Finished difference. Result has 289 places, 173 transitions, 1322 flow [2024-06-28 00:10:31,564 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1303, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1322, PETRI_PLACES=289, PETRI_TRANSITIONS=173} [2024-06-28 00:10:31,565 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 258 predicate places. [2024-06-28 00:10:31,565 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 173 transitions, 1322 flow [2024-06-28 00:10:31,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:31,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:10:31,565 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:10:31,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2024-06-28 00:10:31,565 INFO L420 AbstractCegarLoop]: === Iteration 203 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:10:31,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:10:31,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1451876442, now seen corresponding path program 7 times [2024-06-28 00:10:31,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:10:31,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401748811] [2024-06-28 00:10:31,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:10:31,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:10:31,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:10:33,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:10:33,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:10:33,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401748811] [2024-06-28 00:10:33,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401748811] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:10:33,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:10:33,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 00:10:33,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099616795] [2024-06-28 00:10:33,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:10:33,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 00:10:33,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:10:33,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 00:10:33,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 00:10:33,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 00:10:33,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 173 transitions, 1322 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:33,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:10:33,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 00:10:33,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:10:34,510 INFO L124 PetriNetUnfolderBase]: 399/848 cut-off events. [2024-06-28 00:10:34,510 INFO L125 PetriNetUnfolderBase]: For 64615/64615 co-relation queries the response was YES. [2024-06-28 00:10:34,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3205 conditions, 848 events. 399/848 cut-off events. For 64615/64615 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4913 event pairs, 63 based on Foata normal form. 6/853 useless extension candidates. Maximal degree in co-relation 3095. Up to 650 conditions per place. [2024-06-28 00:10:34,517 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 143 selfloop transitions, 31 changer transitions 11/189 dead transitions. [2024-06-28 00:10:34,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 189 transitions, 1728 flow [2024-06-28 00:10:34,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:10:34,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:10:34,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 149 transitions. [2024-06-28 00:10:34,518 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3880208333333333 [2024-06-28 00:10:34,518 INFO L175 Difference]: Start difference. First operand has 289 places, 173 transitions, 1322 flow. Second operand 12 states and 149 transitions. [2024-06-28 00:10:34,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 189 transitions, 1728 flow [2024-06-28 00:10:34,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 189 transitions, 1652 flow, removed 4 selfloop flow, removed 14 redundant places. [2024-06-28 00:10:34,650 INFO L231 Difference]: Finished difference. Result has 281 places, 168 transitions, 1283 flow [2024-06-28 00:10:34,650 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1246, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1283, PETRI_PLACES=281, PETRI_TRANSITIONS=168} [2024-06-28 00:10:34,650 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 250 predicate places. [2024-06-28 00:10:34,650 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 168 transitions, 1283 flow [2024-06-28 00:10:34,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:34,650 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:10:34,650 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:10:34,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2024-06-28 00:10:34,651 INFO L420 AbstractCegarLoop]: === Iteration 204 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:10:34,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:10:34,651 INFO L85 PathProgramCache]: Analyzing trace with hash -781237594, now seen corresponding path program 8 times [2024-06-28 00:10:34,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:10:34,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449064510] [2024-06-28 00:10:34,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:10:34,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:10:34,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:10:36,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:10:36,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:10:36,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449064510] [2024-06-28 00:10:36,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449064510] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:10:36,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:10:36,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 00:10:36,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003808058] [2024-06-28 00:10:36,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:10:36,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 00:10:36,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:10:36,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 00:10:36,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 00:10:37,140 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:10:37,140 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 168 transitions, 1283 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:37,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:10:37,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:10:37,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:10:37,477 INFO L124 PetriNetUnfolderBase]: 383/820 cut-off events. [2024-06-28 00:10:37,477 INFO L125 PetriNetUnfolderBase]: For 60931/60931 co-relation queries the response was YES. [2024-06-28 00:10:37,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3096 conditions, 820 events. 383/820 cut-off events. For 60931/60931 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 4715 event pairs, 61 based on Foata normal form. 6/825 useless extension candidates. Maximal degree in co-relation 2989. Up to 645 conditions per place. [2024-06-28 00:10:37,484 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 143 selfloop transitions, 26 changer transitions 11/184 dead transitions. [2024-06-28 00:10:37,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 184 transitions, 1679 flow [2024-06-28 00:10:37,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:10:37,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:10:37,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 160 transitions. [2024-06-28 00:10:37,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-28 00:10:37,485 INFO L175 Difference]: Start difference. First operand has 281 places, 168 transitions, 1283 flow. Second operand 12 states and 160 transitions. [2024-06-28 00:10:37,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 184 transitions, 1679 flow [2024-06-28 00:10:37,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 184 transitions, 1609 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-06-28 00:10:37,593 INFO L231 Difference]: Finished difference. Result has 275 places, 163 transitions, 1234 flow [2024-06-28 00:10:37,594 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1213, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1234, PETRI_PLACES=275, PETRI_TRANSITIONS=163} [2024-06-28 00:10:37,594 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 244 predicate places. [2024-06-28 00:10:37,594 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 163 transitions, 1234 flow [2024-06-28 00:10:37,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:37,594 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:10:37,594 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:10:37,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2024-06-28 00:10:37,594 INFO L420 AbstractCegarLoop]: === Iteration 205 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:10:37,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:10:37,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1617342596, now seen corresponding path program 9 times [2024-06-28 00:10:37,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:10:37,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428965980] [2024-06-28 00:10:37,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:10:37,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:10:37,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:10:39,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:10:39,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:10:39,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428965980] [2024-06-28 00:10:39,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428965980] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:10:39,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:10:39,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:10:39,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350598980] [2024-06-28 00:10:39,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:10:39,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:10:39,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:10:39,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:10:39,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:10:39,695 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:10:39,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 163 transitions, 1234 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-06-28 00:10:39,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:10:39,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:10:39,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:10:40,271 INFO L124 PetriNetUnfolderBase]: 367/792 cut-off events. [2024-06-28 00:10:40,271 INFO L125 PetriNetUnfolderBase]: For 57307/57309 co-relation queries the response was YES. [2024-06-28 00:10:40,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2981 conditions, 792 events. 367/792 cut-off events. For 57307/57309 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4534 event pairs, 61 based on Foata normal form. 8/799 useless extension candidates. Maximal degree in co-relation 2877. Up to 618 conditions per place. [2024-06-28 00:10:40,278 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 134 selfloop transitions, 23 changer transitions 17/178 dead transitions. [2024-06-28 00:10:40,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 178 transitions, 1616 flow [2024-06-28 00:10:40,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:10:40,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:10:40,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 158 transitions. [2024-06-28 00:10:40,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4114583333333333 [2024-06-28 00:10:40,279 INFO L175 Difference]: Start difference. First operand has 275 places, 163 transitions, 1234 flow. Second operand 12 states and 158 transitions. [2024-06-28 00:10:40,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 178 transitions, 1616 flow [2024-06-28 00:10:40,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 178 transitions, 1556 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-06-28 00:10:40,400 INFO L231 Difference]: Finished difference. Result has 269 places, 155 transitions, 1173 flow [2024-06-28 00:10:40,400 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1174, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1173, PETRI_PLACES=269, PETRI_TRANSITIONS=155} [2024-06-28 00:10:40,400 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 238 predicate places. [2024-06-28 00:10:40,400 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 155 transitions, 1173 flow [2024-06-28 00:10:40,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-06-28 00:10:40,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:10:40,400 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:10:40,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2024-06-28 00:10:40,401 INFO L420 AbstractCegarLoop]: === Iteration 206 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:10:40,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:10:40,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1084263340, now seen corresponding path program 10 times [2024-06-28 00:10:40,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:10:40,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099359123] [2024-06-28 00:10:40,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:10:40,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:10:40,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:10:42,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:10:42,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:10:42,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099359123] [2024-06-28 00:10:42,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099359123] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:10:42,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:10:42,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:10:42,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239768476] [2024-06-28 00:10:42,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:10:42,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:10:42,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:10:42,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:10:42,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:10:42,481 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:10:42,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 155 transitions, 1173 flow. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:42,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:10:42,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:10:42,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:10:42,756 INFO L124 PetriNetUnfolderBase]: 354/765 cut-off events. [2024-06-28 00:10:42,757 INFO L125 PetriNetUnfolderBase]: For 53887/53887 co-relation queries the response was YES. [2024-06-28 00:10:42,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2870 conditions, 765 events. 354/765 cut-off events. For 53887/53887 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 4344 event pairs, 42 based on Foata normal form. 6/770 useless extension candidates. Maximal degree in co-relation 2769. Up to 476 conditions per place. [2024-06-28 00:10:42,763 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 124 selfloop transitions, 24 changer transitions 21/173 dead transitions. [2024-06-28 00:10:42,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 173 transitions, 1551 flow [2024-06-28 00:10:42,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:10:42,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:10:42,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 163 transitions. [2024-06-28 00:10:42,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4244791666666667 [2024-06-28 00:10:42,763 INFO L175 Difference]: Start difference. First operand has 269 places, 155 transitions, 1173 flow. Second operand 12 states and 163 transitions. [2024-06-28 00:10:42,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 173 transitions, 1551 flow [2024-06-28 00:10:42,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 173 transitions, 1479 flow, removed 5 selfloop flow, removed 13 redundant places. [2024-06-28 00:10:42,864 INFO L231 Difference]: Finished difference. Result has 257 places, 144 transitions, 1088 flow [2024-06-28 00:10:42,865 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1101, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1088, PETRI_PLACES=257, PETRI_TRANSITIONS=144} [2024-06-28 00:10:42,865 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 226 predicate places. [2024-06-28 00:10:42,865 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 144 transitions, 1088 flow [2024-06-28 00:10:42,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:42,865 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:10:42,865 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:10:42,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2024-06-28 00:10:42,865 INFO L420 AbstractCegarLoop]: === Iteration 207 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:10:42,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:10:42,866 INFO L85 PathProgramCache]: Analyzing trace with hash -556897772, now seen corresponding path program 11 times [2024-06-28 00:10:42,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:10:42,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453991793] [2024-06-28 00:10:42,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:10:42,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:10:42,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:10:44,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:10:44,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:10:44,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453991793] [2024-06-28 00:10:44,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453991793] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:10:44,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:10:44,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:10:44,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196113238] [2024-06-28 00:10:44,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:10:44,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:10:44,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:10:44,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:10:44,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:10:45,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:10:45,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 144 transitions, 1088 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-06-28 00:10:45,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:10:45,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:10:45,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:10:45,513 INFO L124 PetriNetUnfolderBase]: 320/695 cut-off events. [2024-06-28 00:10:45,514 INFO L125 PetriNetUnfolderBase]: For 49333/49333 co-relation queries the response was YES. [2024-06-28 00:10:45,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2658 conditions, 695 events. 320/695 cut-off events. For 49333/49333 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3833 event pairs, 51 based on Foata normal form. 6/700 useless extension candidates. Maximal degree in co-relation 2561. Up to 548 conditions per place. [2024-06-28 00:10:45,519 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 121 selfloop transitions, 20 changer transitions 14/159 dead transitions. [2024-06-28 00:10:45,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 159 transitions, 1432 flow [2024-06-28 00:10:45,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:10:45,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:10:45,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 156 transitions. [2024-06-28 00:10:45,520 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-28 00:10:45,520 INFO L175 Difference]: Start difference. First operand has 257 places, 144 transitions, 1088 flow. Second operand 12 states and 156 transitions. [2024-06-28 00:10:45,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 159 transitions, 1432 flow [2024-06-28 00:10:45,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 159 transitions, 1336 flow, removed 4 selfloop flow, removed 21 redundant places. [2024-06-28 00:10:45,597 INFO L231 Difference]: Finished difference. Result has 239 places, 138 transitions, 1005 flow [2024-06-28 00:10:45,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=992, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1005, PETRI_PLACES=239, PETRI_TRANSITIONS=138} [2024-06-28 00:10:45,597 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 208 predicate places. [2024-06-28 00:10:45,597 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 138 transitions, 1005 flow [2024-06-28 00:10:45,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-06-28 00:10:45,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:10:45,598 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:10:45,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2024-06-28 00:10:45,598 INFO L420 AbstractCegarLoop]: === Iteration 208 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:10:45,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:10:45,598 INFO L85 PathProgramCache]: Analyzing trace with hash 132243946, now seen corresponding path program 12 times [2024-06-28 00:10:45,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:10:45,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157336871] [2024-06-28 00:10:45,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:10:45,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:10:45,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:10:47,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:10:47,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:10:47,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157336871] [2024-06-28 00:10:47,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157336871] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:10:47,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:10:47,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:10:47,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179900773] [2024-06-28 00:10:47,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:10:47,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:10:47,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:10:47,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:10:47,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:10:47,532 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:10:47,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 138 transitions, 1005 flow. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:47,533 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:10:47,533 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:10:47,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:10:47,808 INFO L124 PetriNetUnfolderBase]: 309/674 cut-off events. [2024-06-28 00:10:47,808 INFO L125 PetriNetUnfolderBase]: For 46098/46098 co-relation queries the response was YES. [2024-06-28 00:10:47,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2529 conditions, 674 events. 309/674 cut-off events. For 46098/46098 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3693 event pairs, 43 based on Foata normal form. 6/679 useless extension candidates. Maximal degree in co-relation 2435. Up to 468 conditions per place. [2024-06-28 00:10:47,813 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 115 selfloop transitions, 19 changer transitions 17/155 dead transitions. [2024-06-28 00:10:47,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 155 transitions, 1345 flow [2024-06-28 00:10:47,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:10:47,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:10:47,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 159 transitions. [2024-06-28 00:10:47,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4140625 [2024-06-28 00:10:47,814 INFO L175 Difference]: Start difference. First operand has 239 places, 138 transitions, 1005 flow. Second operand 12 states and 159 transitions. [2024-06-28 00:10:47,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 155 transitions, 1345 flow [2024-06-28 00:10:47,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 155 transitions, 1295 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-28 00:10:47,881 INFO L231 Difference]: Finished difference. Result has 231 places, 129 transitions, 946 flow [2024-06-28 00:10:47,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=955, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=946, PETRI_PLACES=231, PETRI_TRANSITIONS=129} [2024-06-28 00:10:47,881 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 200 predicate places. [2024-06-28 00:10:47,881 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 129 transitions, 946 flow [2024-06-28 00:10:47,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:47,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:10:47,881 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:10:47,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2024-06-28 00:10:47,882 INFO L420 AbstractCegarLoop]: === Iteration 209 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:10:47,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:10:47,882 INFO L85 PathProgramCache]: Analyzing trace with hash -2046792376, now seen corresponding path program 13 times [2024-06-28 00:10:47,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:10:47,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632514625] [2024-06-28 00:10:47,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:10:47,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:10:47,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:10:49,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:10:49,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:10:49,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632514625] [2024-06-28 00:10:49,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632514625] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:10:49,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:10:49,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 00:10:49,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693371244] [2024-06-28 00:10:49,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:10:49,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 00:10:49,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:10:49,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 00:10:49,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 00:10:50,086 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:10:50,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 129 transitions, 946 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:50,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:10:50,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:10:50,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:10:50,429 INFO L124 PetriNetUnfolderBase]: 283/620 cut-off events. [2024-06-28 00:10:50,430 INFO L125 PetriNetUnfolderBase]: For 41881/41881 co-relation queries the response was YES. [2024-06-28 00:10:50,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2365 conditions, 620 events. 283/620 cut-off events. For 41881/41881 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3313 event pairs, 45 based on Foata normal form. 6/625 useless extension candidates. Maximal degree in co-relation 2275. Up to 494 conditions per place. [2024-06-28 00:10:50,434 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 112 selfloop transitions, 16 changer transitions 12/144 dead transitions. [2024-06-28 00:10:50,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 144 transitions, 1260 flow [2024-06-28 00:10:50,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:10:50,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:10:50,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 155 transitions. [2024-06-28 00:10:50,435 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4036458333333333 [2024-06-28 00:10:50,435 INFO L175 Difference]: Start difference. First operand has 231 places, 129 transitions, 946 flow. Second operand 12 states and 155 transitions. [2024-06-28 00:10:50,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 144 transitions, 1260 flow [2024-06-28 00:10:50,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 144 transitions, 1206 flow, removed 8 selfloop flow, removed 16 redundant places. [2024-06-28 00:10:50,503 INFO L231 Difference]: Finished difference. Result has 217 places, 124 transitions, 903 flow [2024-06-28 00:10:50,503 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=892, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=903, PETRI_PLACES=217, PETRI_TRANSITIONS=124} [2024-06-28 00:10:50,503 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 186 predicate places. [2024-06-28 00:10:50,503 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 124 transitions, 903 flow [2024-06-28 00:10:50,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:50,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:10:50,503 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:10:50,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2024-06-28 00:10:50,503 INFO L420 AbstractCegarLoop]: === Iteration 210 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:10:50,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:10:50,504 INFO L85 PathProgramCache]: Analyzing trace with hash 2020273770, now seen corresponding path program 14 times [2024-06-28 00:10:50,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:10:50,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387090593] [2024-06-28 00:10:50,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:10:50,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:10:50,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:10:52,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:10:52,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:10:52,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387090593] [2024-06-28 00:10:52,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387090593] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:10:52,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:10:52,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:10:52,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360885107] [2024-06-28 00:10:52,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:10:52,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:10:52,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:10:52,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:10:52,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:10:52,560 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:10:52,561 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 124 transitions, 903 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-06-28 00:10:52,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:10:52,561 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:10:52,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:10:52,973 INFO L124 PetriNetUnfolderBase]: 273/600 cut-off events. [2024-06-28 00:10:52,973 INFO L125 PetriNetUnfolderBase]: For 35187/35187 co-relation queries the response was YES. [2024-06-28 00:10:52,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2250 conditions, 600 events. 273/600 cut-off events. For 35187/35187 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3171 event pairs, 45 based on Foata normal form. 6/605 useless extension candidates. Maximal degree in co-relation 2167. Up to 484 conditions per place. [2024-06-28 00:10:52,977 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 109 selfloop transitions, 15 changer transitions 11/139 dead transitions. [2024-06-28 00:10:52,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 139 transitions, 1207 flow [2024-06-28 00:10:52,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:10:52,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:10:52,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 153 transitions. [2024-06-28 00:10:52,978 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3984375 [2024-06-28 00:10:52,978 INFO L175 Difference]: Start difference. First operand has 217 places, 124 transitions, 903 flow. Second operand 12 states and 153 transitions. [2024-06-28 00:10:52,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 139 transitions, 1207 flow [2024-06-28 00:10:53,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 139 transitions, 1167 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-28 00:10:53,033 INFO L231 Difference]: Finished difference. Result has 211 places, 120 transitions, 878 flow [2024-06-28 00:10:53,033 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=863, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=878, PETRI_PLACES=211, PETRI_TRANSITIONS=120} [2024-06-28 00:10:53,033 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 180 predicate places. [2024-06-28 00:10:53,033 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 120 transitions, 878 flow [2024-06-28 00:10:53,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-06-28 00:10:53,034 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:10:53,034 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:10:53,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2024-06-28 00:10:53,034 INFO L420 AbstractCegarLoop]: === Iteration 211 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:10:53,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:10:53,034 INFO L85 PathProgramCache]: Analyzing trace with hash 921162836, now seen corresponding path program 15 times [2024-06-28 00:10:53,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:10:53,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535566166] [2024-06-28 00:10:53,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:10:53,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:10:53,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:10:55,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:10:55,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:10:55,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535566166] [2024-06-28 00:10:55,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535566166] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:10:55,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:10:55,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:10:55,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151932286] [2024-06-28 00:10:55,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:10:55,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:10:55,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:10:55,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:10:55,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:10:55,613 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:10:55,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 120 transitions, 878 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-06-28 00:10:55,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:10:55,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:10:55,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:10:55,973 INFO L124 PetriNetUnfolderBase]: 264/585 cut-off events. [2024-06-28 00:10:55,973 INFO L125 PetriNetUnfolderBase]: For 32505/32505 co-relation queries the response was YES. [2024-06-28 00:10:55,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2185 conditions, 585 events. 264/585 cut-off events. For 32505/32505 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3062 event pairs, 43 based on Foata normal form. 6/590 useless extension candidates. Maximal degree in co-relation 2105. Up to 456 conditions per place. [2024-06-28 00:10:55,977 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 99 selfloop transitions, 2 changer transitions 31/136 dead transitions. [2024-06-28 00:10:55,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 136 transitions, 1178 flow [2024-06-28 00:10:55,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:10:55,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:10:55,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-28 00:10:55,978 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-28 00:10:55,978 INFO L175 Difference]: Start difference. First operand has 211 places, 120 transitions, 878 flow. Second operand 11 states and 144 transitions. [2024-06-28 00:10:55,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 136 transitions, 1178 flow [2024-06-28 00:10:56,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 136 transitions, 1142 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-28 00:10:56,020 INFO L231 Difference]: Finished difference. Result has 206 places, 104 transitions, 749 flow [2024-06-28 00:10:56,020 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=842, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=749, PETRI_PLACES=206, PETRI_TRANSITIONS=104} [2024-06-28 00:10:56,020 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 175 predicate places. [2024-06-28 00:10:56,020 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 104 transitions, 749 flow [2024-06-28 00:10:56,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-06-28 00:10:56,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:10:56,021 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:10:56,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2024-06-28 00:10:56,021 INFO L420 AbstractCegarLoop]: === Iteration 212 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:10:56,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:10:56,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1369474650, now seen corresponding path program 16 times [2024-06-28 00:10:56,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:10:56,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432272491] [2024-06-28 00:10:56,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:10:56,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:10:56,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:10:57,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:10:57,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:10:57,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432272491] [2024-06-28 00:10:57,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432272491] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:10:57,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:10:57,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 00:10:57,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185535027] [2024-06-28 00:10:57,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:10:57,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 00:10:57,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:10:57,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 00:10:57,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-28 00:10:58,181 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:10:58,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 104 transitions, 749 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:58,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:10:58,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:10:58,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:10:58,474 INFO L124 PetriNetUnfolderBase]: 237/512 cut-off events. [2024-06-28 00:10:58,475 INFO L125 PetriNetUnfolderBase]: For 30708/30708 co-relation queries the response was YES. [2024-06-28 00:10:58,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1931 conditions, 512 events. 237/512 cut-off events. For 30708/30708 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 2611 event pairs, 43 based on Foata normal form. 6/517 useless extension candidates. Maximal degree in co-relation 1853. Up to 344 conditions per place. [2024-06-28 00:10:58,478 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 68 selfloop transitions, 34 changer transitions 11/117 dead transitions. [2024-06-28 00:10:58,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 117 transitions, 1003 flow [2024-06-28 00:10:58,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:10:58,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:10:58,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 157 transitions. [2024-06-28 00:10:58,479 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4088541666666667 [2024-06-28 00:10:58,479 INFO L175 Difference]: Start difference. First operand has 206 places, 104 transitions, 749 flow. Second operand 12 states and 157 transitions. [2024-06-28 00:10:58,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 117 transitions, 1003 flow [2024-06-28 00:10:58,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 117 transitions, 973 flow, removed 11 selfloop flow, removed 15 redundant places. [2024-06-28 00:10:58,516 INFO L231 Difference]: Finished difference. Result has 181 places, 100 transitions, 770 flow [2024-06-28 00:10:58,516 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=719, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=770, PETRI_PLACES=181, PETRI_TRANSITIONS=100} [2024-06-28 00:10:58,516 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 150 predicate places. [2024-06-28 00:10:58,516 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 100 transitions, 770 flow [2024-06-28 00:10:58,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:58,516 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:10:58,516 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:10:58,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2024-06-28 00:10:58,517 INFO L420 AbstractCegarLoop]: === Iteration 213 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:10:58,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:10:58,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1597375800, now seen corresponding path program 17 times [2024-06-28 00:10:58,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:10:58,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241859741] [2024-06-28 00:10:58,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:10:58,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:10:58,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:11:00,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:11:00,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:11:00,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241859741] [2024-06-28 00:11:00,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241859741] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:11:00,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:11:00,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:11:00,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642402382] [2024-06-28 00:11:00,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:11:00,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:11:00,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:11:00,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:11:00,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:11:00,595 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:11:00,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 100 transitions, 770 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-06-28 00:11:00,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:11:00,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:11:00,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:11:01,041 INFO L124 PetriNetUnfolderBase]: 229/494 cut-off events. [2024-06-28 00:11:01,042 INFO L125 PetriNetUnfolderBase]: For 22938/22938 co-relation queries the response was YES. [2024-06-28 00:11:01,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1874 conditions, 494 events. 229/494 cut-off events. For 22938/22938 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2455 event pairs, 43 based on Foata normal form. 6/499 useless extension candidates. Maximal degree in co-relation 1806. Up to 334 conditions per place. [2024-06-28 00:11:01,045 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 68 selfloop transitions, 31 changer transitions 10/113 dead transitions. [2024-06-28 00:11:01,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 113 transitions, 1016 flow [2024-06-28 00:11:01,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:11:01,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:11:01,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 157 transitions. [2024-06-28 00:11:01,046 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4088541666666667 [2024-06-28 00:11:01,046 INFO L175 Difference]: Start difference. First operand has 181 places, 100 transitions, 770 flow. Second operand 12 states and 157 transitions. [2024-06-28 00:11:01,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 113 transitions, 1016 flow [2024-06-28 00:11:01,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 113 transitions, 940 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-28 00:11:01,076 INFO L231 Difference]: Finished difference. Result has 175 places, 97 transitions, 743 flow [2024-06-28 00:11:01,076 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=694, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=743, PETRI_PLACES=175, PETRI_TRANSITIONS=97} [2024-06-28 00:11:01,077 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 144 predicate places. [2024-06-28 00:11:01,077 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 97 transitions, 743 flow [2024-06-28 00:11:01,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-06-28 00:11:01,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:11:01,077 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:11:01,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2024-06-28 00:11:01,077 INFO L420 AbstractCegarLoop]: === Iteration 214 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:11:01,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:11:01,077 INFO L85 PathProgramCache]: Analyzing trace with hash 1916444036, now seen corresponding path program 18 times [2024-06-28 00:11:01,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:11:01,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391149683] [2024-06-28 00:11:01,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:11:01,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:11:01,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:11:03,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:11:03,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:11:03,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391149683] [2024-06-28 00:11:03,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391149683] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:11:03,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:11:03,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 00:11:03,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145931830] [2024-06-28 00:11:03,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:11:03,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 00:11:03,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:11:03,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 00:11:03,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-28 00:11:03,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:11:03,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 97 transitions, 743 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:03,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:11:03,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:11:03,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:11:03,520 INFO L124 PetriNetUnfolderBase]: 222/481 cut-off events. [2024-06-28 00:11:03,520 INFO L125 PetriNetUnfolderBase]: For 20806/20806 co-relation queries the response was YES. [2024-06-28 00:11:03,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1811 conditions, 481 events. 222/481 cut-off events. For 20806/20806 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2388 event pairs, 43 based on Foata normal form. 6/486 useless extension candidates. Maximal degree in co-relation 1746. Up to 324 conditions per place. [2024-06-28 00:11:03,523 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 63 selfloop transitions, 32 changer transitions 11/110 dead transitions. [2024-06-28 00:11:03,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 110 transitions, 983 flow [2024-06-28 00:11:03,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:11:03,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:11:03,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 157 transitions. [2024-06-28 00:11:03,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4088541666666667 [2024-06-28 00:11:03,524 INFO L175 Difference]: Start difference. First operand has 175 places, 97 transitions, 743 flow. Second operand 12 states and 157 transitions. [2024-06-28 00:11:03,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 110 transitions, 983 flow [2024-06-28 00:11:03,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 110 transitions, 915 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-28 00:11:03,555 INFO L231 Difference]: Finished difference. Result has 171 places, 93 transitions, 718 flow [2024-06-28 00:11:03,555 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=675, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=718, PETRI_PLACES=171, PETRI_TRANSITIONS=93} [2024-06-28 00:11:03,555 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 140 predicate places. [2024-06-28 00:11:03,555 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 93 transitions, 718 flow [2024-06-28 00:11:03,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:03,556 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:11:03,556 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:11:03,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2024-06-28 00:11:03,556 INFO L420 AbstractCegarLoop]: === Iteration 215 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:11:03,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:11:03,556 INFO L85 PathProgramCache]: Analyzing trace with hash 986693192, now seen corresponding path program 19 times [2024-06-28 00:11:03,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:11:03,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010013075] [2024-06-28 00:11:03,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:11:03,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:11:03,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:11:05,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:11:05,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:11:05,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010013075] [2024-06-28 00:11:05,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010013075] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:11:05,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:11:05,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:11:05,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578865557] [2024-06-28 00:11:05,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:11:05,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:11:05,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:11:05,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:11:05,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:11:05,867 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:11:05,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 93 transitions, 718 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-06-28 00:11:05,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:11:05,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:11:05,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:11:06,330 INFO L124 PetriNetUnfolderBase]: 214/463 cut-off events. [2024-06-28 00:11:06,330 INFO L125 PetriNetUnfolderBase]: For 19436/19436 co-relation queries the response was YES. [2024-06-28 00:11:06,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1751 conditions, 463 events. 214/463 cut-off events. For 19436/19436 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2258 event pairs, 43 based on Foata normal form. 6/468 useless extension candidates. Maximal degree in co-relation 1688. Up to 314 conditions per place. [2024-06-28 00:11:06,333 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 65 selfloop transitions, 27 changer transitions 10/106 dead transitions. [2024-06-28 00:11:06,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 106 transitions, 950 flow [2024-06-28 00:11:06,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:11:06,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:11:06,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 148 transitions. [2024-06-28 00:11:06,333 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42045454545454547 [2024-06-28 00:11:06,333 INFO L175 Difference]: Start difference. First operand has 171 places, 93 transitions, 718 flow. Second operand 11 states and 148 transitions. [2024-06-28 00:11:06,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 106 transitions, 950 flow [2024-06-28 00:11:06,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 106 transitions, 878 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-28 00:11:06,358 INFO L231 Difference]: Finished difference. Result has 164 places, 90 transitions, 688 flow [2024-06-28 00:11:06,359 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=646, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=688, PETRI_PLACES=164, PETRI_TRANSITIONS=90} [2024-06-28 00:11:06,359 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 133 predicate places. [2024-06-28 00:11:06,359 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 90 transitions, 688 flow [2024-06-28 00:11:06,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-06-28 00:11:06,359 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:11:06,359 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:11:06,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2024-06-28 00:11:06,360 INFO L420 AbstractCegarLoop]: === Iteration 216 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:11:06,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:11:06,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1731980512, now seen corresponding path program 20 times [2024-06-28 00:11:06,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:11:06,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875563267] [2024-06-28 00:11:06,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:11:06,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:11:06,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:11:08,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:11:08,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:11:08,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875563267] [2024-06-28 00:11:08,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875563267] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:11:08,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:11:08,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:11:08,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272439796] [2024-06-28 00:11:08,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:11:08,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:11:08,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:11:08,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:11:08,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:11:08,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:11:08,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 90 transitions, 688 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-06-28 00:11:08,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:11:08,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:11:08,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:11:08,840 INFO L124 PetriNetUnfolderBase]: 207/450 cut-off events. [2024-06-28 00:11:08,840 INFO L125 PetriNetUnfolderBase]: For 17464/17464 co-relation queries the response was YES. [2024-06-28 00:11:08,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1685 conditions, 450 events. 207/450 cut-off events. For 17464/17464 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2157 event pairs, 41 based on Foata normal form. 6/455 useless extension candidates. Maximal degree in co-relation 1625. Up to 296 conditions per place. [2024-06-28 00:11:08,844 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 61 selfloop transitions, 26 changer transitions 13/104 dead transitions. [2024-06-28 00:11:08,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 104 transitions, 918 flow [2024-06-28 00:11:08,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:11:08,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:11:08,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 157 transitions. [2024-06-28 00:11:08,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4088541666666667 [2024-06-28 00:11:08,845 INFO L175 Difference]: Start difference. First operand has 164 places, 90 transitions, 688 flow. Second operand 12 states and 157 transitions. [2024-06-28 00:11:08,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 104 transitions, 918 flow [2024-06-28 00:11:08,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 104 transitions, 858 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-28 00:11:08,879 INFO L231 Difference]: Finished difference. Result has 161 places, 86 transitions, 656 flow [2024-06-28 00:11:08,879 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=628, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=656, PETRI_PLACES=161, PETRI_TRANSITIONS=86} [2024-06-28 00:11:08,879 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 130 predicate places. [2024-06-28 00:11:08,879 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 86 transitions, 656 flow [2024-06-28 00:11:08,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-06-28 00:11:08,880 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:11:08,880 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:11:08,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2024-06-28 00:11:08,880 INFO L420 AbstractCegarLoop]: === Iteration 217 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:11:08,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:11:08,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1875022616, now seen corresponding path program 21 times [2024-06-28 00:11:08,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:11:08,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724887827] [2024-06-28 00:11:08,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:11:08,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:11:08,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:11:11,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:11:11,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:11:11,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724887827] [2024-06-28 00:11:11,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724887827] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:11:11,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:11:11,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 00:11:11,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103332182] [2024-06-28 00:11:11,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:11:11,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 00:11:11,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:11:11,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 00:11:11,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 00:11:11,359 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:11:11,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 86 transitions, 656 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:11,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:11:11,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:11:11,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:11:11,677 INFO L124 PetriNetUnfolderBase]: 196/429 cut-off events. [2024-06-28 00:11:11,677 INFO L125 PetriNetUnfolderBase]: For 16267/16271 co-relation queries the response was YES. [2024-06-28 00:11:11,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1608 conditions, 429 events. 196/429 cut-off events. For 16267/16271 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2042 event pairs, 35 based on Foata normal form. 10/438 useless extension candidates. Maximal degree in co-relation 1550. Up to 256 conditions per place. [2024-06-28 00:11:11,680 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 59 selfloop transitions, 25 changer transitions 13/101 dead transitions. [2024-06-28 00:11:11,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 101 transitions, 882 flow [2024-06-28 00:11:11,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:11:11,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:11:11,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 159 transitions. [2024-06-28 00:11:11,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4140625 [2024-06-28 00:11:11,681 INFO L175 Difference]: Start difference. First operand has 161 places, 86 transitions, 656 flow. Second operand 12 states and 159 transitions. [2024-06-28 00:11:11,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 101 transitions, 882 flow [2024-06-28 00:11:11,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 101 transitions, 822 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-28 00:11:11,701 INFO L231 Difference]: Finished difference. Result has 155 places, 81 transitions, 612 flow [2024-06-28 00:11:11,701 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=596, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=612, PETRI_PLACES=155, PETRI_TRANSITIONS=81} [2024-06-28 00:11:11,702 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 124 predicate places. [2024-06-28 00:11:11,702 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 81 transitions, 612 flow [2024-06-28 00:11:11,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:11,702 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:11:11,702 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:11:11,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2024-06-28 00:11:11,702 INFO L420 AbstractCegarLoop]: === Iteration 218 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:11:11,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:11:11,702 INFO L85 PathProgramCache]: Analyzing trace with hash 152011108, now seen corresponding path program 22 times [2024-06-28 00:11:11,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:11:11,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840574107] [2024-06-28 00:11:11,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:11:11,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:11:11,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:11:13,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:11:13,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:11:13,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840574107] [2024-06-28 00:11:13,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840574107] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:11:13,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:11:13,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:11:13,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807637236] [2024-06-28 00:11:13,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:11:13,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:11:13,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:11:13,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:11:13,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:11:14,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:11:14,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 81 transitions, 612 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-06-28 00:11:14,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:11:14,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:11:14,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:11:14,462 INFO L124 PetriNetUnfolderBase]: 181/398 cut-off events. [2024-06-28 00:11:14,462 INFO L125 PetriNetUnfolderBase]: For 14334/14334 co-relation queries the response was YES. [2024-06-28 00:11:14,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1499 conditions, 398 events. 181/398 cut-off events. For 14334/14334 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 1829 event pairs, 35 based on Foata normal form. 6/403 useless extension candidates. Maximal degree in co-relation 1444. Up to 252 conditions per place. [2024-06-28 00:11:14,465 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 55 selfloop transitions, 21 changer transitions 15/95 dead transitions. [2024-06-28 00:11:14,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 95 transitions, 824 flow [2024-06-28 00:11:14,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:11:14,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:11:14,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-28 00:11:14,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41761363636363635 [2024-06-28 00:11:14,465 INFO L175 Difference]: Start difference. First operand has 155 places, 81 transitions, 612 flow. Second operand 11 states and 147 transitions. [2024-06-28 00:11:14,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 95 transitions, 824 flow [2024-06-28 00:11:14,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 95 transitions, 759 flow, removed 3 selfloop flow, removed 14 redundant places. [2024-06-28 00:11:14,484 INFO L231 Difference]: Finished difference. Result has 147 places, 75 transitions, 551 flow [2024-06-28 00:11:14,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=547, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=551, PETRI_PLACES=147, PETRI_TRANSITIONS=75} [2024-06-28 00:11:14,484 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 116 predicate places. [2024-06-28 00:11:14,484 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 75 transitions, 551 flow [2024-06-28 00:11:14,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-06-28 00:11:14,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:11:14,485 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:11:14,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2024-06-28 00:11:14,485 INFO L420 AbstractCegarLoop]: === Iteration 219 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:11:14,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:11:14,485 INFO L85 PathProgramCache]: Analyzing trace with hash -26716310, now seen corresponding path program 23 times [2024-06-28 00:11:14,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:11:14,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156902289] [2024-06-28 00:11:14,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:11:14,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:11:14,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:11:16,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:11:16,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:11:16,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156902289] [2024-06-28 00:11:16,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156902289] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:11:16,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:11:16,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:11:16,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240386979] [2024-06-28 00:11:16,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:11:16,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:11:16,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:11:16,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:11:16,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:11:16,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:11:16,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 75 transitions, 551 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-06-28 00:11:16,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:11:16,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:11:16,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:11:16,947 INFO L124 PetriNetUnfolderBase]: 168/369 cut-off events. [2024-06-28 00:11:16,948 INFO L125 PetriNetUnfolderBase]: For 13198/13198 co-relation queries the response was YES. [2024-06-28 00:11:16,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1384 conditions, 369 events. 168/369 cut-off events. For 13198/13198 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1651 event pairs, 29 based on Foata normal form. 6/374 useless extension candidates. Maximal degree in co-relation 1331. Up to 206 conditions per place. [2024-06-28 00:11:16,950 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 46 selfloop transitions, 28 changer transitions 12/90 dead transitions. [2024-06-28 00:11:16,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 90 transitions, 755 flow [2024-06-28 00:11:16,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:11:16,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:11:16,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 159 transitions. [2024-06-28 00:11:16,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4140625 [2024-06-28 00:11:16,950 INFO L175 Difference]: Start difference. First operand has 147 places, 75 transitions, 551 flow. Second operand 12 states and 159 transitions. [2024-06-28 00:11:16,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 90 transitions, 755 flow [2024-06-28 00:11:16,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 90 transitions, 682 flow, removed 5 selfloop flow, removed 13 redundant places. [2024-06-28 00:11:16,965 INFO L231 Difference]: Finished difference. Result has 137 places, 71 transitions, 512 flow [2024-06-28 00:11:16,965 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=478, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=512, PETRI_PLACES=137, PETRI_TRANSITIONS=71} [2024-06-28 00:11:16,966 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 106 predicate places. [2024-06-28 00:11:16,966 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 71 transitions, 512 flow [2024-06-28 00:11:16,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-06-28 00:11:16,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:11:16,966 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:11:16,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2024-06-28 00:11:16,966 INFO L420 AbstractCegarLoop]: === Iteration 220 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:11:16,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:11:16,966 INFO L85 PathProgramCache]: Analyzing trace with hash -22074680, now seen corresponding path program 24 times [2024-06-28 00:11:16,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:11:16,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102331796] [2024-06-28 00:11:16,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:11:16,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:11:16,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:11:18,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:11:18,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:11:18,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102331796] [2024-06-28 00:11:18,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102331796] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:11:18,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:11:18,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:11:18,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762658399] [2024-06-28 00:11:18,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:11:18,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:11:18,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:11:18,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:11:18,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:11:19,215 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:11:19,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 71 transitions, 512 flow. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:19,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:11:19,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:11:19,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:11:19,559 INFO L124 PetriNetUnfolderBase]: 154/343 cut-off events. [2024-06-28 00:11:19,559 INFO L125 PetriNetUnfolderBase]: For 10950/10950 co-relation queries the response was YES. [2024-06-28 00:11:19,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1289 conditions, 343 events. 154/343 cut-off events. For 10950/10950 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1486 event pairs, 31 based on Foata normal form. 6/348 useless extension candidates. Maximal degree in co-relation 1240. Up to 216 conditions per place. [2024-06-28 00:11:19,561 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 44 selfloop transitions, 26 changer transitions 10/84 dead transitions. [2024-06-28 00:11:19,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 84 transitions, 700 flow [2024-06-28 00:11:19,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:11:19,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:11:19,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 154 transitions. [2024-06-28 00:11:19,561 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4010416666666667 [2024-06-28 00:11:19,562 INFO L175 Difference]: Start difference. First operand has 137 places, 71 transitions, 512 flow. Second operand 12 states and 154 transitions. [2024-06-28 00:11:19,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 84 transitions, 700 flow [2024-06-28 00:11:19,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 84 transitions, 636 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-28 00:11:19,572 INFO L231 Difference]: Finished difference. Result has 132 places, 68 transitions, 489 flow [2024-06-28 00:11:19,572 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=448, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=489, PETRI_PLACES=132, PETRI_TRANSITIONS=68} [2024-06-28 00:11:19,573 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 101 predicate places. [2024-06-28 00:11:19,573 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 68 transitions, 489 flow [2024-06-28 00:11:19,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:19,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:11:19,573 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:11:19,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2024-06-28 00:11:19,574 INFO L420 AbstractCegarLoop]: === Iteration 221 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:11:19,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:11:19,574 INFO L85 PathProgramCache]: Analyzing trace with hash -22247660, now seen corresponding path program 25 times [2024-06-28 00:11:19,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:11:19,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302910182] [2024-06-28 00:11:19,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:11:19,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:11:19,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:11:21,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:11:21,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:11:21,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302910182] [2024-06-28 00:11:21,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302910182] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:11:21,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:11:21,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 00:11:21,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884443218] [2024-06-28 00:11:21,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:11:21,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 00:11:21,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:11:21,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 00:11:21,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 00:11:21,797 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:11:21,797 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 68 transitions, 489 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:21,797 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:11:21,797 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:11:21,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:11:22,221 INFO L124 PetriNetUnfolderBase]: 147/330 cut-off events. [2024-06-28 00:11:22,222 INFO L125 PetriNetUnfolderBase]: For 9952/9952 co-relation queries the response was YES. [2024-06-28 00:11:22,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1229 conditions, 330 events. 147/330 cut-off events. For 9952/9952 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1412 event pairs, 29 based on Foata normal form. 6/335 useless extension candidates. Maximal degree in co-relation 1182. Up to 198 conditions per place. [2024-06-28 00:11:22,224 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 40 selfloop transitions, 23 changer transitions 15/82 dead transitions. [2024-06-28 00:11:22,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 82 transitions, 675 flow [2024-06-28 00:11:22,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:11:22,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:11:22,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 154 transitions. [2024-06-28 00:11:22,225 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4010416666666667 [2024-06-28 00:11:22,225 INFO L175 Difference]: Start difference. First operand has 132 places, 68 transitions, 489 flow. Second operand 12 states and 154 transitions. [2024-06-28 00:11:22,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 82 transitions, 675 flow [2024-06-28 00:11:22,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 82 transitions, 617 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-28 00:11:22,234 INFO L231 Difference]: Finished difference. Result has 128 places, 63 transitions, 451 flow [2024-06-28 00:11:22,234 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=431, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=451, PETRI_PLACES=128, PETRI_TRANSITIONS=63} [2024-06-28 00:11:22,234 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 97 predicate places. [2024-06-28 00:11:22,234 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 63 transitions, 451 flow [2024-06-28 00:11:22,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:22,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:11:22,235 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:11:22,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220 [2024-06-28 00:11:22,235 INFO L420 AbstractCegarLoop]: === Iteration 222 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:11:22,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:11:22,235 INFO L85 PathProgramCache]: Analyzing trace with hash -137538830, now seen corresponding path program 26 times [2024-06-28 00:11:22,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:11:22,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477055400] [2024-06-28 00:11:22,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:11:22,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:11:22,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:11:24,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:11:24,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:11:24,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477055400] [2024-06-28 00:11:24,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477055400] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:11:24,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:11:24,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:11:24,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348664167] [2024-06-28 00:11:24,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:11:24,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:11:24,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:11:24,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:11:24,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:11:24,286 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:11:24,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 63 transitions, 451 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-06-28 00:11:24,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:11:24,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:11:24,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:11:24,601 INFO L124 PetriNetUnfolderBase]: 135/306 cut-off events. [2024-06-28 00:11:24,601 INFO L125 PetriNetUnfolderBase]: For 9008/9008 co-relation queries the response was YES. [2024-06-28 00:11:24,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1141 conditions, 306 events. 135/306 cut-off events. For 9008/9008 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1268 event pairs, 14 based on Foata normal form. 6/311 useless extension candidates. Maximal degree in co-relation 1096. Up to 100 conditions per place. [2024-06-28 00:11:24,603 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 29 selfloop transitions, 29 changer transitions 17/79 dead transitions. [2024-06-28 00:11:24,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 79 transitions, 635 flow [2024-06-28 00:11:24,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:11:24,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:11:24,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 154 transitions. [2024-06-28 00:11:24,603 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4010416666666667 [2024-06-28 00:11:24,603 INFO L175 Difference]: Start difference. First operand has 128 places, 63 transitions, 451 flow. Second operand 12 states and 154 transitions. [2024-06-28 00:11:24,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 79 transitions, 635 flow [2024-06-28 00:11:24,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 79 transitions, 569 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-28 00:11:24,611 INFO L231 Difference]: Finished difference. Result has 120 places, 56 transitions, 407 flow [2024-06-28 00:11:24,611 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=385, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=407, PETRI_PLACES=120, PETRI_TRANSITIONS=56} [2024-06-28 00:11:24,612 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 89 predicate places. [2024-06-28 00:11:24,612 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 56 transitions, 407 flow [2024-06-28 00:11:24,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-06-28 00:11:24,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:11:24,612 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:11:24,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221 [2024-06-28 00:11:24,612 INFO L420 AbstractCegarLoop]: === Iteration 223 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:11:24,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:11:24,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1694798996, now seen corresponding path program 27 times [2024-06-28 00:11:24,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:11:24,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701148396] [2024-06-28 00:11:24,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:11:24,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:11:24,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:11:26,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:11:26,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:11:26,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701148396] [2024-06-28 00:11:26,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701148396] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:11:26,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:11:26,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:11:26,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252952803] [2024-06-28 00:11:26,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:11:26,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:11:26,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:11:26,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:11:26,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:11:27,023 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:11:27,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 56 transitions, 407 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-06-28 00:11:27,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:11:27,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:11:27,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:11:27,371 INFO L124 PetriNetUnfolderBase]: 115/262 cut-off events. [2024-06-28 00:11:27,371 INFO L125 PetriNetUnfolderBase]: For 7608/7608 co-relation queries the response was YES. [2024-06-28 00:11:27,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1028 conditions, 262 events. 115/262 cut-off events. For 7608/7608 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1039 event pairs, 23 based on Foata normal form. 6/267 useless extension candidates. Maximal degree in co-relation 986. Up to 154 conditions per place. [2024-06-28 00:11:27,373 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 36 selfloop transitions, 19 changer transitions 10/69 dead transitions. [2024-06-28 00:11:27,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 69 transitions, 565 flow [2024-06-28 00:11:27,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:11:27,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:11:27,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 151 transitions. [2024-06-28 00:11:27,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3932291666666667 [2024-06-28 00:11:27,373 INFO L175 Difference]: Start difference. First operand has 120 places, 56 transitions, 407 flow. Second operand 12 states and 151 transitions. [2024-06-28 00:11:27,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 69 transitions, 565 flow [2024-06-28 00:11:27,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 69 transitions, 444 flow, removed 3 selfloop flow, removed 21 redundant places. [2024-06-28 00:11:27,380 INFO L231 Difference]: Finished difference. Result has 104 places, 53 transitions, 313 flow [2024-06-28 00:11:27,380 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=313, PETRI_PLACES=104, PETRI_TRANSITIONS=53} [2024-06-28 00:11:27,380 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 73 predicate places. [2024-06-28 00:11:27,380 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 53 transitions, 313 flow [2024-06-28 00:11:27,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-06-28 00:11:27,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:11:27,380 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:11:27,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable222 [2024-06-28 00:11:27,380 INFO L420 AbstractCegarLoop]: === Iteration 224 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:11:27,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:11:27,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1732460900, now seen corresponding path program 28 times [2024-06-28 00:11:27,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:11:27,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479642591] [2024-06-28 00:11:27,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:11:27,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:11:27,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:11:29,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:11:29,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:11:29,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479642591] [2024-06-28 00:11:29,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479642591] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:11:29,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:11:29,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:11:29,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538018466] [2024-06-28 00:11:29,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:11:29,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:11:29,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:11:29,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:11:29,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:11:29,748 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:11:29,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 53 transitions, 313 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-06-28 00:11:29,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:11:29,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:11:29,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:11:30,081 INFO L124 PetriNetUnfolderBase]: 108/249 cut-off events. [2024-06-28 00:11:30,081 INFO L125 PetriNetUnfolderBase]: For 6610/6614 co-relation queries the response was YES. [2024-06-28 00:11:30,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 898 conditions, 249 events. 108/249 cut-off events. For 6610/6614 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 955 event pairs, 21 based on Foata normal form. 10/258 useless extension candidates. Maximal degree in co-relation 858. Up to 130 conditions per place. [2024-06-28 00:11:30,083 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 36 selfloop transitions, 16 changer transitions 11/67 dead transitions. [2024-06-28 00:11:30,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 67 transitions, 469 flow [2024-06-28 00:11:30,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:11:30,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:11:30,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-28 00:11:30,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-28 00:11:30,084 INFO L175 Difference]: Start difference. First operand has 104 places, 53 transitions, 313 flow. Second operand 11 states and 143 transitions. [2024-06-28 00:11:30,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 67 transitions, 469 flow [2024-06-28 00:11:30,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 67 transitions, 425 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-28 00:11:30,088 INFO L231 Difference]: Finished difference. Result has 99 places, 48 transitions, 278 flow [2024-06-28 00:11:30,088 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=278, PETRI_PLACES=99, PETRI_TRANSITIONS=48} [2024-06-28 00:11:30,088 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 68 predicate places. [2024-06-28 00:11:30,089 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 48 transitions, 278 flow [2024-06-28 00:11:30,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-06-28 00:11:30,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:11:30,089 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:11:30,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable223 [2024-06-28 00:11:30,089 INFO L420 AbstractCegarLoop]: === Iteration 225 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:11:30,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:11:30,089 INFO L85 PathProgramCache]: Analyzing trace with hash -446820156, now seen corresponding path program 29 times [2024-06-28 00:11:30,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:11:30,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621632658] [2024-06-28 00:11:30,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:11:30,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:11:30,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:11:32,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:11:32,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:11:32,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621632658] [2024-06-28 00:11:32,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621632658] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:11:32,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:11:32,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 00:11:32,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388339275] [2024-06-28 00:11:32,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:11:32,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 00:11:32,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:11:32,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 00:11:32,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-28 00:11:32,466 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:11:32,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 48 transitions, 278 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:32,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:11:32,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:11:32,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:11:32,763 INFO L124 PetriNetUnfolderBase]: 96/221 cut-off events. [2024-06-28 00:11:32,763 INFO L125 PetriNetUnfolderBase]: For 5816/5816 co-relation queries the response was YES. [2024-06-28 00:11:32,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 809 conditions, 221 events. 96/221 cut-off events. For 5816/5816 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 792 event pairs, 21 based on Foata normal form. 6/226 useless extension candidates. Maximal degree in co-relation 771. Up to 126 conditions per place. [2024-06-28 00:11:32,764 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 30 selfloop transitions, 16 changer transitions 11/61 dead transitions. [2024-06-28 00:11:32,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 61 transitions, 420 flow [2024-06-28 00:11:32,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:11:32,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:11:32,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 151 transitions. [2024-06-28 00:11:32,765 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3932291666666667 [2024-06-28 00:11:32,765 INFO L175 Difference]: Start difference. First operand has 99 places, 48 transitions, 278 flow. Second operand 12 states and 151 transitions. [2024-06-28 00:11:32,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 61 transitions, 420 flow [2024-06-28 00:11:32,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 61 transitions, 378 flow, removed 5 selfloop flow, removed 13 redundant places. [2024-06-28 00:11:32,768 INFO L231 Difference]: Finished difference. Result has 92 places, 44 transitions, 251 flow [2024-06-28 00:11:32,768 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=251, PETRI_PLACES=92, PETRI_TRANSITIONS=44} [2024-06-28 00:11:32,769 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 61 predicate places. [2024-06-28 00:11:32,769 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 44 transitions, 251 flow [2024-06-28 00:11:32,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:32,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:11:32,769 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:11:32,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable224 [2024-06-28 00:11:32,769 INFO L420 AbstractCegarLoop]: === Iteration 226 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:11:32,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:11:32,769 INFO L85 PathProgramCache]: Analyzing trace with hash 351647304, now seen corresponding path program 30 times [2024-06-28 00:11:32,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:11:32,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803077188] [2024-06-28 00:11:32,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:11:32,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:11:32,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:11:34,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:11:34,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:11:34,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803077188] [2024-06-28 00:11:34,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803077188] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:11:34,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:11:34,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:11:34,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951998709] [2024-06-28 00:11:34,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:11:34,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:11:34,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:11:34,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:11:34,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:11:34,845 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:11:34,846 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 44 transitions, 251 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-06-28 00:11:34,846 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:11:34,846 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:11:34,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:11:35,196 INFO L124 PetriNetUnfolderBase]: 88/203 cut-off events. [2024-06-28 00:11:35,196 INFO L125 PetriNetUnfolderBase]: For 4402/4402 co-relation queries the response was YES. [2024-06-28 00:11:35,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 730 conditions, 203 events. 88/203 cut-off events. For 4402/4402 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 687 event pairs, 21 based on Foata normal form. 6/208 useless extension candidates. Maximal degree in co-relation 696. Up to 116 conditions per place. [2024-06-28 00:11:35,197 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 29 selfloop transitions, 14 changer transitions 10/57 dead transitions. [2024-06-28 00:11:35,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 57 transitions, 385 flow [2024-06-28 00:11:35,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:11:35,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:11:35,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 151 transitions. [2024-06-28 00:11:35,198 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3932291666666667 [2024-06-28 00:11:35,198 INFO L175 Difference]: Start difference. First operand has 92 places, 44 transitions, 251 flow. Second operand 12 states and 151 transitions. [2024-06-28 00:11:35,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 57 transitions, 385 flow [2024-06-28 00:11:35,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 57 transitions, 345 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-28 00:11:35,202 INFO L231 Difference]: Finished difference. Result has 86 places, 41 transitions, 228 flow [2024-06-28 00:11:35,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=228, PETRI_PLACES=86, PETRI_TRANSITIONS=41} [2024-06-28 00:11:35,202 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 55 predicate places. [2024-06-28 00:11:35,202 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 41 transitions, 228 flow [2024-06-28 00:11:35,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-06-28 00:11:35,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:11:35,202 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:11:35,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225 [2024-06-28 00:11:35,202 INFO L420 AbstractCegarLoop]: === Iteration 227 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:11:35,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:11:35,203 INFO L85 PathProgramCache]: Analyzing trace with hash 351474324, now seen corresponding path program 31 times [2024-06-28 00:11:35,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:11:35,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542175399] [2024-06-28 00:11:35,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:11:35,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:11:35,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:11:37,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:11:37,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:11:37,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542175399] [2024-06-28 00:11:37,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542175399] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:11:37,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:11:37,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:11:37,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682950216] [2024-06-28 00:11:37,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:11:37,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:11:37,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:11:37,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:11:37,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:11:37,303 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:11:37,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 41 transitions, 228 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-06-28 00:11:37,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:11:37,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:11:37,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:11:37,561 INFO L124 PetriNetUnfolderBase]: 81/190 cut-off events. [2024-06-28 00:11:37,561 INFO L125 PetriNetUnfolderBase]: For 3490/3490 co-relation queries the response was YES. [2024-06-28 00:11:37,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 669 conditions, 190 events. 81/190 cut-off events. For 3490/3490 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 626 event pairs, 19 based on Foata normal form. 6/195 useless extension candidates. Maximal degree in co-relation 638. Up to 98 conditions per place. [2024-06-28 00:11:37,562 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 26 selfloop transitions, 11 changer transitions 14/55 dead transitions. [2024-06-28 00:11:37,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 55 transitions, 360 flow [2024-06-28 00:11:37,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:11:37,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:11:37,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 151 transitions. [2024-06-28 00:11:37,563 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3932291666666667 [2024-06-28 00:11:37,563 INFO L175 Difference]: Start difference. First operand has 86 places, 41 transitions, 228 flow. Second operand 12 states and 151 transitions. [2024-06-28 00:11:37,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 55 transitions, 360 flow [2024-06-28 00:11:37,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 55 transitions, 326 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-28 00:11:37,566 INFO L231 Difference]: Finished difference. Result has 82 places, 36 transitions, 195 flow [2024-06-28 00:11:37,566 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=195, PETRI_PLACES=82, PETRI_TRANSITIONS=36} [2024-06-28 00:11:37,567 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 51 predicate places. [2024-06-28 00:11:37,567 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 36 transitions, 195 flow [2024-06-28 00:11:37,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-06-28 00:11:37,567 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:11:37,567 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:11:37,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable226 [2024-06-28 00:11:37,567 INFO L420 AbstractCegarLoop]: === Iteration 228 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:11:37,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:11:37,568 INFO L85 PathProgramCache]: Analyzing trace with hash 621305048, now seen corresponding path program 32 times [2024-06-28 00:11:37,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:11:37,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063736407] [2024-06-28 00:11:37,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:11:37,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:11:37,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:11:39,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:11:39,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:11:39,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063736407] [2024-06-28 00:11:39,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063736407] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:11:39,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:11:39,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:11:39,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490701854] [2024-06-28 00:11:39,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:11:39,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:11:39,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:11:39,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:11:39,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:11:39,871 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-28 00:11:39,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 36 transitions, 195 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 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) [2024-06-28 00:11:39,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:11:39,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-28 00:11:39,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:11:40,272 INFO L124 PetriNetUnfolderBase]: 69/164 cut-off events. [2024-06-28 00:11:40,272 INFO L125 PetriNetUnfolderBase]: For 2926/2926 co-relation queries the response was YES. [2024-06-28 00:11:40,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 581 conditions, 164 events. 69/164 cut-off events. For 2926/2926 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 498 event pairs, 19 based on Foata normal form. 6/169 useless extension candidates. Maximal degree in co-relation 552. Up to 100 conditions per place. [2024-06-28 00:11:40,273 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 23 selfloop transitions, 6 changer transitions 16/49 dead transitions. [2024-06-28 00:11:40,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 49 transitions, 313 flow [2024-06-28 00:11:40,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 00:11:40,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 00:11:40,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 143 transitions. [2024-06-28 00:11:40,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-28 00:11:40,274 INFO L175 Difference]: Start difference. First operand has 82 places, 36 transitions, 195 flow. Second operand 13 states and 143 transitions. [2024-06-28 00:11:40,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 49 transitions, 313 flow [2024-06-28 00:11:40,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 49 transitions, 281 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-28 00:11:40,277 INFO L231 Difference]: Finished difference. Result has 75 places, 30 transitions, 150 flow [2024-06-28 00:11:40,277 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=150, PETRI_PLACES=75, PETRI_TRANSITIONS=30} [2024-06-28 00:11:40,277 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 44 predicate places. [2024-06-28 00:11:40,277 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 30 transitions, 150 flow [2024-06-28 00:11:40,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 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) [2024-06-28 00:11:40,277 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:11:40,277 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:11:40,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable227 [2024-06-28 00:11:40,277 INFO L420 AbstractCegarLoop]: === Iteration 229 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:11:40,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:11:40,278 INFO L85 PathProgramCache]: Analyzing trace with hash 381801270, now seen corresponding path program 33 times [2024-06-28 00:11:40,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:11:40,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630608735] [2024-06-28 00:11:40,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:11:40,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:11:40,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:11:42,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:11:42,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:11:42,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630608735] [2024-06-28 00:11:42,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630608735] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:11:42,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:11:42,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:11:42,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524510686] [2024-06-28 00:11:42,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:11:42,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:11:42,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:11:42,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:11:42,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:11:42,359 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:11:42,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 30 transitions, 150 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-06-28 00:11:42,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:11:42,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:11:42,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:11:42,682 INFO L124 PetriNetUnfolderBase]: 59/138 cut-off events. [2024-06-28 00:11:42,683 INFO L125 PetriNetUnfolderBase]: For 1962/1966 co-relation queries the response was YES. [2024-06-28 00:11:42,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 476 conditions, 138 events. 59/138 cut-off events. For 1962/1966 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 382 event pairs, 15 based on Foata normal form. 10/147 useless extension candidates. Maximal degree in co-relation 451. Up to 64 conditions per place. [2024-06-28 00:11:42,683 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 21 selfloop transitions, 10 changer transitions 9/44 dead transitions. [2024-06-28 00:11:42,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 44 transitions, 260 flow [2024-06-28 00:11:42,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:11:42,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:11:42,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 148 transitions. [2024-06-28 00:11:42,684 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2024-06-28 00:11:42,684 INFO L175 Difference]: Start difference. First operand has 75 places, 30 transitions, 150 flow. Second operand 12 states and 148 transitions. [2024-06-28 00:11:42,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 44 transitions, 260 flow [2024-06-28 00:11:42,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 44 transitions, 236 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-28 00:11:42,686 INFO L231 Difference]: Finished difference. Result has 64 places, 27 transitions, 135 flow [2024-06-28 00:11:42,686 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=135, PETRI_PLACES=64, PETRI_TRANSITIONS=27} [2024-06-28 00:11:42,686 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 33 predicate places. [2024-06-28 00:11:42,686 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 27 transitions, 135 flow [2024-06-28 00:11:42,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-06-28 00:11:42,686 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:11:42,686 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:11:42,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable228 [2024-06-28 00:11:42,686 INFO L420 AbstractCegarLoop]: === Iteration 230 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:11:42,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:11:42,687 INFO L85 PathProgramCache]: Analyzing trace with hash -638138250, now seen corresponding path program 34 times [2024-06-28 00:11:42,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:11:42,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518012250] [2024-06-28 00:11:42,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:11:42,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:11:42,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:11:44,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:11:44,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:11:44,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518012250] [2024-06-28 00:11:44,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518012250] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:11:44,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:11:44,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:11:44,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629518330] [2024-06-28 00:11:44,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:11:44,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:11:44,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:11:44,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:11:44,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:11:45,225 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:11:45,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 27 transitions, 135 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-06-28 00:11:45,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:11:45,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:11:45,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:11:45,638 INFO L124 PetriNetUnfolderBase]: 49/120 cut-off events. [2024-06-28 00:11:45,638 INFO L125 PetriNetUnfolderBase]: For 1186/1186 co-relation queries the response was YES. [2024-06-28 00:11:45,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 409 conditions, 120 events. 49/120 cut-off events. For 1186/1186 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 290 event pairs, 17 based on Foata normal form. 6/125 useless extension candidates. Maximal degree in co-relation 388. Up to 60 conditions per place. [2024-06-28 00:11:45,639 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 17 selfloop transitions, 7 changer transitions 12/40 dead transitions. [2024-06-28 00:11:45,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 40 transitions, 235 flow [2024-06-28 00:11:45,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:11:45,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:11:45,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 145 transitions. [2024-06-28 00:11:45,640 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3776041666666667 [2024-06-28 00:11:45,640 INFO L175 Difference]: Start difference. First operand has 64 places, 27 transitions, 135 flow. Second operand 12 states and 145 transitions. [2024-06-28 00:11:45,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 40 transitions, 235 flow [2024-06-28 00:11:45,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 40 transitions, 209 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-28 00:11:45,641 INFO L231 Difference]: Finished difference. Result has 60 places, 23 transitions, 108 flow [2024-06-28 00:11:45,641 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=108, PETRI_PLACES=60, PETRI_TRANSITIONS=23} [2024-06-28 00:11:45,641 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 29 predicate places. [2024-06-28 00:11:45,641 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 23 transitions, 108 flow [2024-06-28 00:11:45,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-06-28 00:11:45,642 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:11:45,642 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:11:45,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229 [2024-06-28 00:11:45,642 INFO L420 AbstractCegarLoop]: === Iteration 231 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:11:45,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:11:45,642 INFO L85 PathProgramCache]: Analyzing trace with hash 211098840, now seen corresponding path program 35 times [2024-06-28 00:11:45,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:11:45,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836437213] [2024-06-28 00:11:45,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:11:45,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:11:45,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:11:47,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:11:47,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:11:47,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836437213] [2024-06-28 00:11:47,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836437213] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:11:47,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:11:47,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:11:47,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144303273] [2024-06-28 00:11:47,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:11:47,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:11:47,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:11:47,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:11:47,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:11:47,879 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-28 00:11:47,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 23 transitions, 108 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-06-28 00:11:47,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:11:47,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-28 00:11:47,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:11:48,088 INFO L124 PetriNetUnfolderBase]: 26/71 cut-off events. [2024-06-28 00:11:48,088 INFO L125 PetriNetUnfolderBase]: For 448/448 co-relation queries the response was YES. [2024-06-28 00:11:48,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 199 conditions, 71 events. 26/71 cut-off events. For 448/448 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 107 event pairs, 0 based on Foata normal form. 6/76 useless extension candidates. Maximal degree in co-relation 180. Up to 24 conditions per place. [2024-06-28 00:11:48,088 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 0 selfloop transitions, 0 changer transitions 33/33 dead transitions. [2024-06-28 00:11:48,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 33 transitions, 162 flow [2024-06-28 00:11:48,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:11:48,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:11:48,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 138 transitions. [2024-06-28 00:11:48,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-28 00:11:48,089 INFO L175 Difference]: Start difference. First operand has 60 places, 23 transitions, 108 flow. Second operand 12 states and 138 transitions. [2024-06-28 00:11:48,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 33 transitions, 162 flow [2024-06-28 00:11:48,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 33 transitions, 130 flow, removed 1 selfloop flow, removed 16 redundant places. [2024-06-28 00:11:48,089 INFO L231 Difference]: Finished difference. Result has 47 places, 0 transitions, 0 flow [2024-06-28 00:11:48,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=0, PETRI_PLACES=47, PETRI_TRANSITIONS=0} [2024-06-28 00:11:48,090 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 16 predicate places. [2024-06-28 00:11:48,090 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 0 transitions, 0 flow [2024-06-28 00:11:48,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-06-28 00:11:48,092 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-28 00:11:48,093 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-28 00:11:48,093 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-28 00:11:48,093 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-28 00:11:48,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230 [2024-06-28 00:11:48,094 INFO L445 BasicCegarLoop]: Path program histogram: [35, 35, 35, 28, 21, 15, 15, 10, 7, 6, 5, 5, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:11:48,096 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-28 00:11:48,097 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-28 00:11:48,100 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-28 00:11:48,100 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-28 00:11:48,101 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.06 12:11:48 BasicIcfg [2024-06-28 00:11:48,101 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-28 00:11:48,102 INFO L158 Benchmark]: Toolchain (without parser) took 614473.78ms. Allocated memory was 153.1MB in the beginning and 1.6GB in the end (delta: 1.4GB). Free memory was 89.3MB in the beginning and 1.3GB in the end (delta: -1.2GB). Peak memory consumption was 239.4MB. Max. memory is 16.1GB. [2024-06-28 00:11:48,102 INFO L158 Benchmark]: Witness Parser took 0.21ms. Allocated memory is still 153.1MB. Free memory is still 111.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 00:11:48,102 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 153.1MB. Free memory is still 108.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 00:11:48,102 INFO L158 Benchmark]: CACSL2BoogieTranslator took 785.87ms. Allocated memory was 153.1MB in the beginning and 226.5MB in the end (delta: 73.4MB). Free memory was 88.9MB in the beginning and 193.9MB in the end (delta: -105.0MB). Peak memory consumption was 41.2MB. Max. memory is 16.1GB. [2024-06-28 00:11:48,103 INFO L158 Benchmark]: Boogie Procedure Inliner took 72.65ms. Allocated memory is still 226.5MB. Free memory was 193.9MB in the beginning and 189.7MB in the end (delta: 4.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-28 00:11:48,103 INFO L158 Benchmark]: Boogie Preprocessor took 69.22ms. Allocated memory is still 226.5MB. Free memory was 189.7MB in the beginning and 186.4MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-28 00:11:48,103 INFO L158 Benchmark]: RCFGBuilder took 843.14ms. Allocated memory is still 226.5MB. Free memory was 186.4MB in the beginning and 123.7MB in the end (delta: 62.7MB). Peak memory consumption was 62.9MB. Max. memory is 16.1GB. [2024-06-28 00:11:48,103 INFO L158 Benchmark]: TraceAbstraction took 612695.97ms. Allocated memory was 226.5MB in the beginning and 1.6GB in the end (delta: 1.4GB). Free memory was 123.7MB in the beginning and 1.3GB in the end (delta: -1.2GB). Peak memory consumption was 198.3MB. Max. memory is 16.1GB. [2024-06-28 00:11:48,104 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.21ms. Allocated memory is still 153.1MB. Free memory is still 111.6MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.16ms. Allocated memory is still 153.1MB. Free memory is still 108.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 785.87ms. Allocated memory was 153.1MB in the beginning and 226.5MB in the end (delta: 73.4MB). Free memory was 88.9MB in the beginning and 193.9MB in the end (delta: -105.0MB). Peak memory consumption was 41.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 72.65ms. Allocated memory is still 226.5MB. Free memory was 193.9MB in the beginning and 189.7MB in the end (delta: 4.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 69.22ms. Allocated memory is still 226.5MB. Free memory was 189.7MB in the beginning and 186.4MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 843.14ms. Allocated memory is still 226.5MB. Free memory was 186.4MB in the beginning and 123.7MB in the end (delta: 62.7MB). Peak memory consumption was 62.9MB. Max. memory is 16.1GB. * TraceAbstraction took 612695.97ms. Allocated memory was 226.5MB in the beginning and 1.6GB in the end (delta: 1.4GB). Free memory was 123.7MB in the beginning and 1.3GB in the end (delta: -1.2GB). Peak memory consumption was 198.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 818]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 819]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 52 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 612.6s, OverallIterations: 231, TraceHistogramMax: 1, PathProgramHistogramMax: 35, EmptinessCheckTime: 0.0s, AutomataDifference: 202.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 14306 SdHoareTripleChecker+Valid, 73.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 11738 mSDsluCounter, 7446 SdHoareTripleChecker+Invalid, 64.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6418 mSDsCounter, 3448 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 95052 IncrementalHoareTripleChecker+Invalid, 98500 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3448 mSolverCounterUnsat, 1028 mSDtfsCounter, 95052 mSolverCounterSat, 0.4s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2612 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 2580 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4156 ImplicationChecksByTransitivity, 114.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3121occurred in iteration=169, InterpolantAutomatonStates: 2457, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 3.8s SatisfiabilityAnalysisTime, 404.1s InterpolantComputationTime, 4081 NumberOfCodeBlocks, 4081 NumberOfCodeBlocksAsserted, 231 NumberOfCheckSat, 3850 ConstructedInterpolants, 0 QuantifiedInterpolants, 212481 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 231 InterpolantComputations, 231 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-28 00:11:48,261 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE